Komatsuhydraulic excavatorsmall ( - pc90)
Komatsu PC28UU-2(S/N 7001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu PC28UU-2 (S/N 7001-UP) is a 2.7-2.8 tonne (6,000 lb class) zero-tail-swing mini excavator built in Japan through the 1990s, sized for tight-access site work where a conventional-swing machine won't fit. Power comes from a Yanmar-built 3-cylinder diesel, documented across sources as 3D84N-2FA or 3D84, roughly 24 hp (17.7-18.1 kW), mechanically governed with no engine control module. Operating weight sits at 2,740 kg (6,042 lb) in the one standard configuration documented for this serial range, offered with a canopy or an enclosed cab upper structure and a pin-on digging bucket as standard; a dealer-fit hydraulic thumb was a factory option. This dash-2 model followed the earlier PC28UU/PC28UU-1 (1984-1995), which ran a different, lower-power engine on its own separate serial series; the S/N 7001-UP block covers this generation's initial production run, ahead of a documented running change at S/N 10801.
Within this same S/N 7001-UP family, Komatsu made a running change at S/N 10801 that added a 2-speed travel motor and revised the bucket to a slightly different width and capacity spec, same model, later parts-book volume, not a new machine. A related PC28UU-2E carries a two-piece offset boom under a distinct model number and higher serials in the same numeric series; treat it as a separate variant, not a running change of this one. No direct successor model is documented in Komatsu's catalog; the line effectively ends with these dash-2/dash-2E variants, and Komatsu's modern compact-excavator range arrived over a decade later as a different design generation rather than a straight replacement. In today's used and parts market this machine's appeal is mechanical simplicity: no ECM, no emissions aftertreatment, and a short parts list that keeps repair and rebuild costs low, though buyers need to match the exact serial block (7001-10800 vs 10801-up) since running gear, bucket fit, and some wiring don't cross over cleanly between them.
Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.
Komatsu PC28UU-2(S/N 7001-UP) specifications
Engine
| Engine model | Komatsu 3-cylinder diesel, factory spec sheets list it as "3D84"; parts/rebuild-kit references for this machine cross this engine family with "3D82AE-3D" used across the same-era PC25R/PC27R/PC28UU/PC30FR mini-excavator line. Treat as one engine family, code varies by document. |
| Gross/net power | Approx. 17.7 kW (24 PS) net at 2,300 rpm per the factory catalog line; also listed as 24.3 HP (18.1 kW) at 2,450 rpm (flywheel/gross rating) in dealer spec sheets. Figures are close and represent net vs gross rating, not a different engine. |
| Displacement | Approx. 1.33-1.4 L (81-85 cu in) — value varies slightly by source/engine code |
| Cylinders | 3, vertical in-line, water-cooled, naturally aspirated diesel |
| Emissions tier | None — predates emissions-tier/Stage regulation; this is a 1990s Japan-domestic mini excavator built before Tier 1 rules took effect |
Weights
| Operating weight | 2,740 kg (6,042 lb) — single standard configuration documented; no long-undercarriage or wide-track variant found for this model |
| Max ground pressure | 0.28 kg/cm2 (4.0 psi) |
| Transport weight | Not documented separately from operating weight for this model |
Dimensions
| Transport length | 3,940 mm (12'11") |
| Transport width | 1,520 mm (5'0") |
| Transport height | 2,400 mm (7'10") |
| Tail swing radius | 760 mm (2'6") — zero-tail-swing design, upper structure width 1,480 mm |
| Track shoe width | Standard rubber shoe approx. 300 mm (11.8 in); aftermarket track suppliers also list a 250 mm width for this model, so shoe width varies by configuration |
| Ground clearance | Approx. 300 mm (11.8 in) — single-source figure, verify with dealer if critical |
| Undercarriage length | Not documented for this exact model |
Performance
| Max dig depth | 2,800 mm (9'2") |
| Max reach at ground level | 4,340 mm (14'3") |
| Max dump height | 3,540 mm (11'7") |
| Max digging/cutting height | 4,910 mm (16'1") |
| Swing speed | 10.0 rpm |
| Travel speed | 2.3-2.4 km/h (1.4-1.5 mph) |
| Gradeability | 30 degrees (approx. 58% grade) |
| Drawbar pull | Not documented for this model |
Forces
| Bucket digging force | 21.0 kN (4,720 lbf / 2,140 kgf) |
| Arm/stick digging force | Approx. 15.2 kN (3,420 lbf) on the standard stick — single-source figure; no long-stick option documented for this model |
Service capacities (summary)
| Fuel tank | 35 L (9.2 US gal) |
| Hydraulic system (total) | 34 L (9.0 US gal) |
| Engine oil | Approx. 7.3 L (1.9 US gal) machine refill; engine sump-only figure for this engine family runs smaller (around 3.6 L total / 1.2 L effective on oil-and-filter change) — use the machine-level figure for a full service |
| Cooling system | 3.9 L (1.0 US gal) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
PC28UU-2(S/N 7001-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | 5.7-7.3 L (1.5-1.9 US gal) - refill sources disagree on this figure; fill to dipstick mark, not to a fixed count | API CD/CE-class diesel engine oil. SAE 15W-40 for temperate to warm conditions, SAE 10W-30 for wide ambient range, drop to straight SAE 10W for cold starts near or below freezing. No model-specific branded oil name confirmed for this exact serial block; grade is per typical Komatsu compact-excavator practice of this era. |
| Cooling system | 3.85-3.9 L (1.0 US gal) | Corrosion-inhibited ethylene-glycol antifreeze/coolant, pre-mixed for year-round use with freeze protection down to roughly -20C (-4F). Use a genuine or equivalent ethylene-glycol coolant; do not mix coolant types. |
| Fuel tank | 35 L (9.2 US gal) | No. 2 diesel fuel; switch to a winter-blend or No. 1 diesel below freezing to prevent fuel waxing/gelling. Keep the tank filled at the end of each shift to limit condensation. |
| Hydraulic system total (dry fill, incl. cylinders and lines) | approx. 54 L (14.3 US gal) | Anti-wear hydraulic oil, ISO VG46 equivalent for general/warm-weather use. Switch to a lighter ISO VG32 or SAE 5W-10W grade below about 5C (41F) to protect the pump on cold start-up. |
| Hydraulic tank (refill/service capacity) | 34 L (9.0 US gal) | Same anti-wear hydraulic oil as the system fill above; top off to the sight gauge on the tank, not to a fixed liter count. |
| Final drive (each) | approx. 0.3-0.6 L (0.1-0.16 US gal) per side - exact per-side split not clearly documented for this serial range; verify against the drain/level plug | SAE 30 monograde gear/engine oil or a GL-4/GL-5 gear oil equivalent, per typical Komatsu spec for this compact-excavator class. |
| Swing drive | approx. 0.6-0.9 L (0.16-0.24 US gal) | Same gear oil type as the final drives (SAE 30 monograde or GL-4/GL-5 equivalent). |
| Grease (spec only) | service-point application, not a sump fill | Komatsu Genuine lithium-based EP chassis grease (G2-LI type), NLGI 2. Use a molybdenum-fortified grease at high-load bucket and linkage pins if called out on the grease chart. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu PC28UU-2(S/N 7001-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the PC28UU-2(S/N 7001-UP) beyond the schedule
Predictive maintenance & fluid analysis
This machine's 3D84N-2FA diesel is mechanically governed with no ECM, so oil sampling and coolant testing are the only early-warning tools for ring, bearing, or head wear. Track relief-valve pressure at the test port over time, a slow drift signals pump or valve wear before digging force drops off. The offset-boom cab-protection potentiometers give their leading indicator: a rough instead of smooth sweep predicts a Code 31/34 lockout. Watch charging voltage at each service; a slow fade points to a ground strap or fusible link, not the alternator.
Corrective & common repairs
The most common repair here isn't hydraulic, it's the offset-boom cab-protection wiring. A corroded or fouled potentiometer connector under the seat or on the boom trips a Code 31/34 lockout, killing boom-up, stick-in, and left swing; clean and re-crimp before condemning any valve or pump. A charge lamp that won't clear, even after an alternator swap, usually traces to a blown fusible link or corroded ground strap. Stalling under load points to fuel contamination or a clogged water separator; a clicking no-start points to battery terminals or the starter solenoid.
Overhaul & rebuild points
High-hour units on this platform show internal bypass in the swing motor and travel motors, weak swing rotation under load, or one track running slower than its mate, confirmed by comparing pressure at both travel-motor test ports. Relief-valve drift is the usual cause of fading digging force once filters and oil are ruled out. At rebuild, renew final-drive and swing-drive gear oil, check boom/arm/bucket pin-and-bushing play, and re-torque the swing bearing. This mechanically governed 3D84N-2FA has no self-diagnostic for injector or valve wear, so both are calendar items.
Seasonal & environment servicing
Below freezing, run this small three-cylinder diesel's full glow-plug preheat cycle every start, skipping it, or one dead plug in the bank, causes a hard cold start even with good compression. Switch to a lighter hydraulic oil grade and a winter-blend diesel to prevent pump cavitation and fuel waxing. Keep the tank topped off at shift's end to limit condensation. In wet or muddy ground, check rubber track tension more often, a loose track accelerates roller and idler wear faster than dry-ground use.
PC28UU-2(S/N 7001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| YM171051-92760 | Wrench,Fuel Filter? Water Separator | Fuel system service | Check fitment → |
| YM129100-55650 | Element,Fuel Filter | Fuel system service | Check fitment → |
| YM129100-55621 | Fuel Filter Ass'Y | Fuel system service | Check fitment → |
| 20T-98-71410 | Plate? Caution,Fuel Filter | Fuel system service | Check fitment → |
| 07000-02080 | O-Ring,Hydraulic Oil Filter | Hydraulic service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
PC28UU-2(S/N 7001-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| Code 34 | Offset-boom potentiometer or its wiring circuit is out of range in the cab-protection (offset-boom interlock) system; the controller cuts pilot signal to boom-up, stick-in, and left swing to stop the bucket from striking the cab. | Corroded or gel-fouled pin connector at the offset potentiometer (a known weak point on this platform), or low/erratic reference voltage from a weak charging system. | Disconnect and clean the offset-potentiometer connector and re-crimp the pins, verify charging voltage holds steady with the engine running, and replace the potentiometer if it will not sweep smoothly through its full range. |
| Code 31 | Boom-position potentiometer signal in the same cab-protection interlock is missing or out of range. | Broken or corroded wiring/connector at the boom potentiometer mounted under the curved cover on the boom, or a failed potentiometer itself. | Open and clean the boom potentiometer connector, confirm it sweeps a clean reference voltage through full travel, and check charging-system output before condemning the sensor. |
| Cab-protection lockout lamp (flashing indicator, no boom raise/stick-in/left swing) | Any one of the three offset-boom interlock potentiometers (boom, stick/arm, offset) has faulted, so the controller flashes a warning lamp in the cab and locks out boom raise, stick-in, and left offset until cleared. | Same failure modes as the numbered potentiometer codes: broken wiring, a fouled connector, a bad potentiometer, or on some units a failed add-on interlock controller. | Use the cab-mounted override/cancel switch to move the boom to a safe position, then read the two-digit code on the small interlock display console if fitted, before opening connectors to chase the faulted sensor. |
| Charge (battery) warning lamp | Charge warning lamp stays on or lights at running speed, showing the alternator is not feeding the battery. | Blown fusible link in the alternator output circuit, a failed alternator or regulator, or a loose/missing ground strap. | Compare alternator output voltage at the output terminal against battery voltage, inspect the fusible link and main ground strap, and only replace the alternator once wiring and grounds check out. |
| Engine oil pressure warning lamp | Engine oil pressure has dropped below the safe minimum for this mechanically governed diesel. | Low oil level, a failed oil pressure sender/switch, or worn oil pump or bearings. | Stop the engine immediately, check oil level and condition, then test the sender/switch before further teardown. |
| Engine coolant temperature warning lamp | Engine coolant temperature has climbed above the safe operating range. | Low coolant level, a clogged radiator, a stuck thermostat, or a slipping or broken fan belt. | Idle the engine to cool down, check coolant level and radiator fins for debris, and inspect the fan belt and thermostat. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
PC28UU-2(S/N 7001-UP) attachments & work tools
Buckets
Factory digging bucket for this serial range runs about 320 mm (12.6 in) wide, roughly 0.03 m3 struck / 0.05 m3 heaped, on 35 mm pins. Field-fit widths for this 2.7-2.8 t class span roughly 200-900 mm (8-36 in) across dirt-tooth, rock-tooth (HD), smooth-edge grading, skeleton, and root-rake styles. Most machines in this range run pin-on buckets rather than a factory quick-coupler mount.
Hydraulic hammers
This carrier sits below Komatsu's own genuine breaker line, which starts at a larger carrier class, so no factory hammer is cataloged for it. The practical hammer class for this 2.7-2.8 t excavator is an aftermarket breaker built for 2-3.5 t carriers, roughly 50-100 kg operating weight, sized to the machine's small pump flow and pressure.
Quick couplers
Komatsu's genuine quick-hitch range is built around its larger construction-class excavators and does not list this mini class. The common fit is an aftermarket manual pin-grabber coupler sized for 2-3 t mini excavators using 35 mm pins; hydraulic couplers exist for this weight class but need an added auxiliary circuit and are less common on a machine this size.
Thumbs/grapples
A hydraulic thumb, pedal-controlled from the cab, is a documented dealer-fitted option on this exact machine, pivoting off the same stick pin as the bucket. Grapple and multi-tool attachments sized for the 2.7-2.8 t class are supplied by aftermarket attachment dealers for this platform, sharing the bucket end's pin and hose interface.
Rippers
A single ripper tooth or point, mounted in place of a bucket tooth or on a bucket-end bracket, is offered as an aftermarket attachment for this machine. A dedicated multi-shank ripper beam is not documented for this size class; limited stick and boom breakout force keep this to light scarifying work.
Hydraulic-kit notes
The factory circuit on this machine is sized for one pedal-controlled auxiliary line, enough for a thumb. Small engine and pump output on this class limit flow, so high-flow tools such as augers are not a standard fit and generally need an aftermarket high-flow pump/valve kit; confirm circuit pressure and flow with an attachment supplier before fitting any powered tool.
All PC28UU-2(S/N 7001-UP) assemblies by section
Every catalogued assembly group for the Komatsu PC28UU-2(S/N 7001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
3d82ae-3d Engine S/N 00101-Up
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Air Cleaner And Mounting
| YM***41 | Buffle | 1 |
| YM***10 | Support | 1 |
| YM***10 | Cap | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Air Intake Manifold And Connection
| YM***81 | Pipe | 1 |
| YM***52 | Screw | 4 |
| YM***00 | Heater,Intake Air | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Alternator (40a)
| YM***50 | Brush Ass'Y | 1 |
| YM***00 | Retainer,Bearing | 1 |
| YM***70 | Diode Ass'Y | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Alternator And Mounting (40a)
| YM***02 | Nut | 1 |
| YM***30 | Plate,Adjust | 1 |
| YM***10 | Spacer | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Camshaft And Tappet
| YM***01 | Gear Ass'Y,Camshaft | 1 |
| YM***00 | Rod,Push | 6 |
| YM***50 | Bearing, Thrust | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Crankshaft
| YM***00 | Gear,Crank | 1 |
| YM***80 | Parallel Pin | 1 |
| YM***50 | Pulley,Crank | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Cylinder Block
| YM***00 | Gauge, Oil Level | 1 |
| YM***30 | Thrust Metal Ass'Y (Std) | 2 |
| YM***20 | Plug,Drain(Without Oil Cooler Type) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Cylinder Head
| YM***80 | Retainer, Spring | 6 |
| YM***00 | Guide,Valve? Exhaust | 6 |
| YM***00 | Plug | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Cylinder Head Cover
| YM***20 | Cover, Breather | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***00 | Clip,Breather Hose | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Exhaust Manifold And Muffler
| YM***00 | Muffler | 1 |
| YM***62 | Bolt | 2 |
| YM***02 | Stud | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Flywheel And Flywheel Housing
| YM***50 | Oil Seal Case, Assembly | 1 |
| YM***80 | Seal? Rear | 1 |
| YM***02 | Screw | 6 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Front Cover
| YM***02 | Bolt Plated | 2 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***52 | Bolt | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Fuel Filter And Piping
| YM***70 | Union | 1 |
| YM***40 | Lever | 1 |
| YM***00 | O-Ring (Kit) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Fuel Injection Pump (Governor) (1/2)
| YM***40 | Lever,Control | 1 |
| YM***30 | Spacer,Lever Shaft | 1 |
| YM***02 | Nut | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Fuel Injection Pump (Governor) (2/2)
| YM***01 | Weight Assembly., Governor | 1 |
| YM***50 | Angleich Ass'Y | 1 |
| YM***00 | Washer,Spring | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Fuel Injection Pump (Pump) (1/2)
| YM***50 | Kit, Shim | 1 |
| YM***10 | Plate? Caution | 1 |
| YM***50 | Cover,Side | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Fuel Injection Pump (Pump) (2/2)
| YM***70 | Retainer, Spring | 3 |
| YM***00 | Plunger W/Barrel | 3 |
| YM***02 | Screw | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Fuel Injection Pump And Piping
| YM***20 | Retainer, Pipe | 1 |
| YM***60 | O-Ring,Fuel Injection Pump | 1 |
| YM***20 | Pipe,Injection? No.2 | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Fuel Nozzle And Spill Pipe
| YM***20 | Spring | 1 |
| YM***00 | Fuel Nozzle Ass'Y | 3 |
| YM***50 | Nozzle, Assembly | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Gasket Kit
| YM***60 | O-Ring,Fuel Injection Pump | 1 |
| YM***00 | Gasket Kit | 1 |
| YM***40 | O-Ring,Drain Plug | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Lubricating Oil Filter
| YM***50 | Nut | 1 |
| YM***02 | Bolt Plated | 3 |
| YM***00 | Valve,Relief | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Lubricating Oil Pump And Piping
| YM***50 | Oil Pressure Transmitter | 1 |
| YM***00 | Oil Pump Ass'Y | 1 |
| YM***02 | Seal,Ring (Kit) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Oil Pan
| YM***40 | Plug,Drain | 1 |
| YM***52 | Screw | 22 |
| YM***40 | Plug,Drain | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Piston And Connecting Rod
| YM***00 | Connecting Rod, Assembly | 3 |
| YM***80 | Piston, Assembly | 3 |
| YM***00 | Screw | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Rocker Arm
| YM***02 | Screw | 6 |
| YM***80 | Spring | 3 |
| YM***40 | Rocker Shaft | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Starting Motor And Mounting
| YM***52 | Bolt Plated | 2 |
| (Y***0) | Starting Motor Ass'Y,(See Fig.A6210-B0a2a) | 1 |
| (Y***0) | Starting Motor Ass'Y,(See Fig.A6210-B0a2) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Starting Motor(#00101-09680)
| YM***20 | Pinion,Pinion | 1 |
| YM***80 | Catch | 1 |
| YM***70 | Nut | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Timer? Safety Relay And Glow Relay
| YM***20 | Timer,Solenoid | 1 |
| YM***10 | Relay,Stop Solenoid | 1 |
| YM***00 | Relay, Safety | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Tool
| YM***60 | Wrench,Fuel Filter? Water Separator | 1 |
| YM***50 | Screw Driver | 1 |
| YM***20 | Flex Horn (Option.) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Water Pump And Cooling Fan
| YM***02 | Bolt Plated | 2 |
| YM***02 | Screw | 4 |
| YM***20 | O-Ring,(Not Shown) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d82ae-3d Engine S/N 00101-Up : Water Separator
| YM***00 | Gasket | 2 |
| YM***00 | O-Ring (Kit) | 1 |
| YM***50 | Plug,Air | 2 |
3d84n-2fa Engine S/N 17493-Up
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Air Cleaner And Mounting
| YM***41 | Buffle | 1 |
| YM***10 | Cap | 1 |
| YM***30 | Pan,Dust | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Air Intake Manifold And Connection
| YM***01 | Heater,Intake Air | 1 |
| YM***00 | Manifold,Air Intake | 1 |
| YM***52 | Screw | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Alternator (40a)
| YM***50 | Brush Ass'Y | 1 |
| YM***00 | Retainer,Bearing | 1 |
| YM***70 | Diode Ass'Y | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Alternator And Mounting (40a)
| YM***02 | Nut | 1 |
| YM***10 | Spacer | 1 |
| YM***50 | Bolt | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Camshaft And Tappet
| YM***80 | Camshaft Ass'Y | 1 |
| YM***01 | Gear Ass'Y,Camshaft | 1 |
| YM***50 | Bearing, Thrust | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Crankshaft
| YM***00 | Gear,Crank | 1 |
| YM***80 | Parallel Pin | 1 |
| YM***00 | Crankshaft Ass'Y | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Cylinder Block
| YM***20 | Plug,Drain(Without Oil Cooler Type) | 1 |
| YM***20 | Screw | 8 |
| YM***00 | Plug | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Cylinder Head
| YM***80 | Retainer, Spring | 6 |
| YM***40 | Seal,Valve? Exhaust (Kit) | 3 |
| YM***10 | Valve,Exhaust | 3 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Cylinder Head Cover
| YM***20 | Cover, Breather | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***00 | Clip,Breather Hose | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Engine Stop Motor And Mounting
| 01***16 | Bolt, Mount Solenoid Valve | 1 |
| 08***14 | Clip,(Without Cab) | 1 |
| YM***80 | Ring,Snap | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Exhaust Manifold And Muffler
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***65 | Bolt,R.H | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Flywheel And Flywheel Housing
| YM***02 | Screw | 6 |
| YM***02 | Screw | 4 |
| YM***80 | Parallel Pin | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Front Cover And Gear
| YM***60 | O-Ring,Fuel Injection Pump | 1 |
| YM***90 | Front Cover Ass'Y | 1 |
| YM***10 | Washer,Seal | 3 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Fuel Filter And Piping
| 08***02 | Conduit | 1 |
| YM***70 | Union | 1 |
| YM***00 | O-Ring (Kit) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Fuel Injection Pump (Governor) (1/2)
| YM***02 | Lever Ass'Y,Stop | 1 |
| YM***10 | Pin,Stop Lever | 1 |
| YM***00 | O-Ring (Kit) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Fuel Injection Pump (Governor) (2/2)
| YM***01 | Weight Assembly., Governor | 1 |
| YM***90 | Shaft,Governor Lever | 1 |
| YM***50 | Angleich Ass'Y | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Fuel Injection Pump (Pump) (1/2)
| YM***90 | Injection Pump Ass'Y | 1 |
| YM***50 | Kit, Shim | 1 |
| YM***10 | Plate? Caution | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Fuel Injection Pump (Pump) (2/2)
| YM***70 | Retainer, Spring | 3 |
| YM***00 | Plunger Ass'Y | 3 |
| YM***02 | Screw | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Fuel Injection Pump And Piping
| YM***20 | Retainer, Pipe | 1 |
| YM***30 | Bolt | 2 |
| YM***02 | Nut | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Fuel Nozzle And Spill Pipe
| YM***20 | Spring | 1 |
| YM***00 | Fuel Injection Nozzle, Assembly | 1 |
| YM***80 | Seat,Nozzle (Kit) | 3 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Gasket Kit
| YM***60 | O-Ring,Fuel Injection Pump | 1 |
| YM***20 | Gasket,Water Pump | 1 |
| YM***40 | O-Ring,Drain Plug | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Lubricating Oil Filter
| YM***50 | Nut | 1 |
| YM***02 | Bolt Plated | 3 |
| YM***00 | Valve,Relief | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Lubricating Oil Pump And Piping
| YM***50 | Oil Pressure Transmitter | 1 |
| YM***41 | Gasket (Kit) | 1 |
| YM***20 | Bolt,Joint (Cylinder Head Side) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Oil Pan
| YM***02 | Screw | 4 |
| YM***40 | O-Ring,Drain Plug | 1 |
| YM***52 | Screw | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : P.P.C. Pump And Mounting
| YM***20 | Pump Ass'Y,Hydraulic | 1 |
| YM***81 | Gasket (Kit) | 1 |
| YM***50 | Bracket | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Piston And Connecting Rod
| YM***20 | Piston Ass'Y | 3 |
| YM***00 | Screw | 2 |
| YM***00 | Crank Pin Metal A. (Std) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Rocker Arm
| YM***02 | Screw | 6 |
| YM***80 | Spring | 3 |
| YM***50 | Rocker Arm Ass'Y | 6 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Safety Relay
| YM***00 | Relay, Safety | 1 |
| YM***00 | Relay, Safety | 3 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Starting Motor (1.8kw)
| YM***40 | Bolt,Through | 2 |
| YM***50 | Pinion Ass'Y,Pinion | 1 |
| YM***00 | Cover,Rear | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Starting Motor And Mounting (1.8kw)
| YM***52 | Bolt Plated | 2 |
| YM***02 | Nut,Rock | 1 |
| YM***00 | Washer,Spring | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Water Pump And Cooling Fan
| 21***10 | V-Belt,(For Pc28ug) | 1 |
| 21***20 | Pulley,(For Pc28ug) | 1 |
| YM***20 | Gasket,Water Pump | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : 3d84n-2fa Engine S/N 17493-Up : Water Separator
| YM***00 | Gasket | 2 |
| YM***00 | O-Ring (Kit) | 1 |
| YM***50 | Plug,Air | 2 |
Cooling System
Komatsu : Pc28uu-2(S/N 7001-Up) : Cooling System : Fan Guard
| 01***14 | Bolt,(W/Joy Stick Str.)(W/O Heater) | 2 |
| 20***20 | Net,Wire | 1 |
| 21***90 | Net,Wire | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Cooling System : Radiator? Oil Cooler And Piping(#10801-)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***14 | Bolt | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Cooling System : Radiator? Oil Cooler And Piping(#7001-8985)
| 01***16 | Bolt (With Air Heater & Conditioner) | 6 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 9 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Cooling System : Radiator? Oil Cooler And Piping(#8986-10800)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***14 | Bolt,(W/Joy Stick Str.)(W/O Heater) | 2 |
Electrical System
Komatsu : Pc28uu-2(S/N 7001-Up) : Electrical System : Battery
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 6 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 5 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Electrical System : Electrical Wiring
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
| 01***12 | Bolt,(With Speedometer) | 6 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Electrical System : Electrical Wiring (For 4 System Spec.)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
| 01***12 | Bolt,(With Speedometer) | 6 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Electrical System : Electrical Wiring (For 4 System Spec.) (For 2 Speed Travl)(#10801-)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***12 | Bolt,(With Speedometer) | 6 |
Engine Related Parts
Komatsu : Pc28uu-2(S/N 7001-Up) : Engine Related Parts : Damper(#10801-)
| 01***25 | Bolt,Without Revolution Sensor | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Engine Related Parts : Damper(#7001-10800)
| 01***25 | Bolt,Without Revolution Sensor | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 3 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Engine Related Parts : Engine Mount (1/2)(#10801-)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 8 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Engine Related Parts : Engine Mount (1/2)(#7001-10800)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 8 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Engine Related Parts : Engine Mount (2/2)(#10801-)
| 01***60 | Bolt,(For Japan And Sweden) | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Engine Related Parts : Engine Mount (2/2)(#7001-10800)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***12 | Bolt,(With Speedometer) | 1 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Engine Related Parts : Fuel Control Lever
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 2 |
| 01***35 | Bolt, Stopper | 1 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
Fuel Tank And Related Parts
Komatsu : Pc28uu-2(S/N 7001-Up) : Fuel Tank And Related Parts : Fuel Tank And Piping
| 01***65 | Bolt,R.H | 1 |
| 01***10 | Screw | 5 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
Guard
Komatsu : Pc28uu-2(S/N 7001-Up) : Guard : Counter Weight
| 01***85 | Bolt,(For Perforated Mask) | 3 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 3 |
| 01***60 | Flat Washer - M20 (Hardened) | 3 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Guard : Front Cover
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 10 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Guard : Hood (1/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***60 | Bolt, Mount Tube To Switch Pump | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Guard : Hood (2/2)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 7 |
Hydraulic System
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Actuator Line (For Double Arm)
| 01***50 | Bolt | 3 |
| 01***50 | Bolt (Kit) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Actuator Line (For Power Tilt Mechanical Angle)
| 01***50 | Bolt | 3 |
| 01***50 | Bolt (Kit) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Actuator Line (For Slide Arm)
| 01***50 | Bolt | 3 |
| 01***50 | Bolt (Kit) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Attachment Line (For Breaker And 1-Actuater Attachment)
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
| 08***34 | Band,(For Ktta38 Engine) (Op) | 4 |
| 20***00 | Valve Ass'Y,3-Way | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Delivery Line(#10801-)
| 21***10 | Hose | 1 |
| 21***20 | Hose | 1 |
| 21***30 | Hose | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Delivery Line(#7001-10800)
| 01***35 | Bolt | 4 |
| 01***23 | Washer,(With Auto Emergency Steering) | 4 |
| 07***21 | O-Ring,Water Piping | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Hydraulic Control Valve And Related Parts
| 01***20 | Bolt,(With Auto Emergency Steering) | 1 |
| 01***30 | Bolt,(For Mechanical Governor) | 5 |
| 01***23 | Washer,(For Shipping) | 6 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Hydraulic Control Valve And Related Parts (For Power Tilt Mechanical Angle)
| 01***20 | Bolt,(With Auto Emergency Steering) | 1 |
| 01***30 | Bolt,(For Mechanical Governor) | 5 |
| 01***23 | Washer,(For Shipping) | 6 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Hydraulic Tank
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 8 |
| 07***85 | O-Ring,(Without Fuel Level Gauge) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Hydraulic Tank (For 2 Speed Travel)(#10801-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 8 |
| 07***85 | O-Ring,(Without Fuel Level Gauge) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Main Pump And Related Parts(#10801-)
| 01***25 | Bolt,Without Revolution Sensor | 8 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 8 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Main Pump And Related Parts(#7001-10800)
| 01***25 | Bolt,Without Revolution Sensor | 8 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 8 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : P.P.C. Line (1/4) : Unit_01_of_02
| 01***00 | Bolt, Mount Back-Up Alarm | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***23 | O-Ring,(Crusher?Other Att.For Ppc Con | 9 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : P.P.C. Line (1/4) : Unit_02_of_02
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : P.P.C. Line (1/4) (For 2 Speed Travel)(#10801-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***00 | Bolt, Mount Back-Up Alarm | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : P.P.C. Line (1/4) (For 4 System Spec.)
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***00 | Bolt, Mount Back-Up Alarm | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : P.P.C. Line (2/4)
| 01***20 | Bolt,(With Auto Emergency Steering) | 8 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : P.P.C. Line (3/4)
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 07***18 | O-Ring,(See Fig.1601-29?1602-17) | 10 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : P.P.C. Line (4/4) (For 4 System Spec.)(#13185-)
| 01***25 | Bolt,(Rear Attachment Less) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 12 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : P.P.C. Line (4/4) (For 4 System Spec.)(#7001-13184)
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 8 |
| 08***36 | Band,(For 2nd Travel Speed) (Op) | 12 |
| 20***70 | Sheet | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : P.P.C. Line (4/4) (For Multple Pattern)(#13185-)
| 01***25 | Bolt,(Rear Attachment Less) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 12 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : P.P.C. Line (4/4) (For Multple Pattern)(#7001-13184)
| 07***23 | O-Ring,(Crusher?Other Att.For Ppc Con | 8 |
| 08***36 | Band,(For 2nd Travel Speed) (Op) | 12 |
| 20***70 | Sheet | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : P.P.C. Line (4/4) (Jis Pattern)(#13185-)
| 01***25 | Bolt,(Rear Attachment Less) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 12 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : P.P.C. Line (4/4) (Jis Pattern)(#7798-13184)
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 8 |
| 08***36 | Band,(For 2nd Travel Speed) (Op) | 12 |
| 20***70 | Sheet | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : P.P.C. Line (4/4) (Komatsu Pattern)(#13185-)
| 01***25 | Bolt,(Rear Attachment Less) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 12 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : P.P.C. Line (4/4) (Komatsu Pattern)(#7001-13184)
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 8 |
| 08***36 | Band,(For 2nd Travel Speed) (Op) | 12 |
| 20***70 | Sheet | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : P.P.C. Line (Elbow) (For Multple Pattern)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 07***23 | O-Ring,(Crusher?Other Att.For Ppc Con | 16 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Return Line (For Breaker And 1-Actuater Attachment)(#7001-8985)
| 01***60 | Bolt, Mount Tube To Switch Pump | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Return Line (For Breaker And 1-Actuater Attachment)(#8986-)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Return Line(#7001-8985) : Unit_02_of_02
| 01***60 | Bolt, Mount Tube To Switch Pump | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Return Line(#7001-8985) : Unit_01_of_02
| 01***60 | Bolt, Mount Tube To Switch Pump | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Return Line(#8986-) : Unit_02_of_02
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Return Line(#8986-) : Unit_01_of_02
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Suction Line(#10801-)
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 07***13 | Hose | 1 |
| 07***19 | Clamp, Hose | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Suction Line(#7001-10800)
| 01***35 | Bolt | 4 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***23 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Hydraulic System : Suction Valve (For Slide Arm And Long Arm)
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 1 |
| 70***00 | Valve Ass'Y,Suction | 1 |
Main/Revolving Frame And Related Parts
Komatsu : Pc28uu-2(S/N 7001-Up) : Main/Revolving Frame And Related Parts : Lubricating Line(#10801-)
| 07***00 | Fitting, Grease - Upper Hinge Pin | 2 |
| 20***20 | Adapter | 1 |
| 21***11 | Nipple | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Main/Revolving Frame And Related Parts : Lubricating Line(#7001-10800)
| 07***00 | Fitting, Grease - Upper Hinge Pin | 2 |
| 07***11 | Sleeve,(For Kt1150 Engine) | 4 |
| 07***10 | Nut,(For Kt1150 Engine) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Main/Revolving Frame And Related Parts : Revolving Frame (1/2)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Main/Revolving Frame And Related Parts : Revolving Frame (1/2) (For Power Tilt Mechanical Angle)
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Main/Revolving Frame And Related Parts : Revolving Frame (2/2) : Unit_02_of_02
| 01***16 | Bolt - Starting Motor Ground Cable | 2 |
| 21***20 | Plate | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Main/Revolving Frame And Related Parts : Revolving Frame (2/2) : Unit_01_of_02
| 01***20 | Bolt | 2 |
| 01***30 | Bolt | 4 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
Marks And Plates
Komatsu : Pc28uu-2(S/N 7001-Up) : Marks And Plates : Marks And Plates (For Power Tilt Mechanical Angle)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***35 | Plate? Name,(Limited Supply) (English) | 1 |
| 09***00 | Plate? Safety,Radiator Cap | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Marks And Plates : Marks And Plates (Jis Pattern) (For 4 Four System Spec.)(#7798-)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***35 | Plate? Name,(Limited Supply) (English) | 1 |
| 09***00 | Plate? Safety,Radiator Cap | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Marks And Plates : Marks And Plates (Jis Pattern)(#7798-)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***35 | Plate? Name,(Limited Supply) (English) | 1 |
| 09***00 | Plate? Safety,Radiator Cap | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Marks And Plates : Marks And Plates (Komatsu Pattern)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***35 | Plate? Name,(Limited Supply) (English) | 1 |
| 09***00 | Plate? Safety,Radiator Cap | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Marks And Plates : Marks And Plates (Komatsu Pattern) (For Four System Spec.)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***35 | Plate? Name,(Limited Supply) (English) | 1 |
| 09***00 | Plate? Safety,Radiator Cap | 1 |
Operator'S Compartment And Control System
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Ashtray
| 01***08 | Screw | 3 |
| 20***80 | Ashtray | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Attachment Control Pedal (For Breaker And 1-Actuater Attachment)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***05 | Nut,L.H. (For Trimming Dozer) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Blade Control Lever And Linkage (For Power Tilt Mechanical Angle)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***35 | Bolt | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Canopy
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Floor Frame (For Breaker And 1-Actuater Attachment)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 5 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Floor Frame (For Cab)
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 5 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Floor Frame (For Canopy)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 5 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Floor Mat (For Breaker And 1-Actuater Attachment)
| 20***40 | Cap | 1 |
| 21***20 | Mat,Floor | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Floor Mat (For Cab)
| 20***40 | Cap | 1 |
| 21***20 | Mat,Floor | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Floor Mat (For Cab) (For 2 Speed Travel)(#10801-)
| 21***20 | Mat,Floor | 1 |
| 21***80 | Mat,Floor (For 3-Spool Valve) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Floor Mat (For Canopy)
| 21***60 | Mat,Floor | 1 |
| 21***63 | Mat,Floor | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Floor Mat (For Canopy) (For 2 Speed Travel)(#10801-)
| 21***70 | Mat,Floor (For 3-Spool Valve) | 1 |
| 21***52 | Mat,Floor | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Floor Mat (For Multple Pattern)
| 04***10 | Rivet | 3 |
| 20***70 | Plate? Operating,Multiple Pattern | 1 |
| 20***80 | Nut | 3 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Floor Mat (For Power Tilt Mechanical Angle)
| 21***60 | Mat,Floor | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Handrail
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Heater
| 01***20 | Bolt,(Forwarded Individually Parts) | 4 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 1 |
| 07***59 | Clamp,See Fig. K4010-05a0 | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Main Control (Travel) (1/2)
| 01***16 | Bolt (With Air Heater & Conditioner) | 1 |
| 01***06 | Nut,L.H. Thread (For Russian) | 2 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Main Control (Travel) (2/2)
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***25 | Screw | 2 |
| 01***05 | Nut,L.H. (For Trimming Dozer) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Main Control (Work Equipment)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***40 | Bolt, Mount Master Brake Cylinder | 4 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Main Control(Work Equipment) (For Power Tilt Mechanical Angle)
| 01***40 | Bolt, Mount Master Brake Cylinder | 4 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 1 |
| 01***10 | Bolt - Relay And Flasher Mounting | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Monitor Panel (Inner Parts)
| 78***10 | Bulb? 1.4w | 3 |
| 78***20 | Bulb? 2w | 2 |
| 78***50 | Socket | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Monitor Panel (Inner Parts) (For 4 System Spec.)
| 78***10 | Bulb? 1.4w | 4 |
| 78***20 | Bulb? 2w | 1 |
| 78***50 | Socket | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Monitor Panel And Wiring (For 4 System Spec.)
| 01***10 | Bolt - Relay And Flasher Mounting | 8 |
| 01***16 | Bolt, Mount Solenoid Valve | 3 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Monitor Panel And Wiring (For Cab)
| 01***10 | Bolt - Relay And Flasher Mounting | 8 |
| 01***16 | Bolt, Mount Solenoid Valve | 3 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Monitor Panel And Wiring (For Canopy)
| 01***10 | Bolt - Relay And Flasher Mounting | 8 |
| 01***16 | Bolt, Mount Solenoid Valve | 3 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Cab 1/2) (1/7)
| 01***08 | Screw | 6 |
| 20***70 | Packing | 6 |
| 20***31 | Stopper | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Cab 2/2) (2/7)
| 01***08 | Screw | 3 |
| 20***70 | Packing | 3 |
| 20***31 | Stopper | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Door) (4/7)
| 01***25 | Bolt,Without Revolution Sensor | 4 |
| 01***08 | Screw, Terminal | 1 |
| 01***12 | Screw,(With Articulate Indicator) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Electrical) (5/7)
| 01***10 | Screw,(Without Radio) | 1 |
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 2 |
| 01***16 | Screw, Mount Parking Lights | 3 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Guard) (6/7)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 21***60 | Clip | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Mount) (7/7)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 7 |
| 01***50 | Bolt | 3 |
| 01***55 | Bolt | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Roof) (3/7)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***08 | Screw, Terminal | 2 |
| 01***16 | Screw | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Operator'S Seat
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
| 01***25 | Bolt - Relay Mounting | 2 |
| 21***00 | Seat Ass'Y | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Radio
| 01***14 | Screw,(With Joy Stick Steering) | 2 |
| 01***12 | Screw,Sems | 4 |
| 01***12 | Screw | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Operator'S Compartment And Control System : Window Washer
| 01***16 | Screw | 2 |
| 07***13 | Gasket | 1 |
| 08***01 | Clip,(With Cab) | 6 |
Service Kit And Component Parts
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Arm Cylinder (Inner Parts)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***22 | Nut,(North America Spec.) | 1 |
| 01***32 | Washer, (Without Emergency Steering) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Blade Cylinder (Inner Parts)
| 01***22 | Nut,(North America Spec.) | 1 |
| 07***80 | O-Ring,Hydraulic Oil Filter | 1 |
| 07***75 | O-Ring,Cylinder Head | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Blade Tilt Cylinder (Inner Parts) (For Power Tilt Mechanical Angle)
| 01***24 | Nut,Bearing | 1 |
| 04***25 | Ring,Snap (Kit) | 4 |
| 07***80 | O-Ring,Hydraulic Oil Filter | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Boom Cylinder (Inner Parts)(#10801-)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***22 | Nut,(North America Spec.) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Boom Cylinder (Inner Parts)(#7001-10800)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***22 | Nut,(North America Spec.) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Bucket Cylinder (Inner Parts)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***22 | Nut,(North America Spec.) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Bucket Cylinder (Inner Parts) (For Double Arm)
| 01***16 | Bolt (With Air Heater & Conditioner) | 1 |
| 01***15 | Nut,(For Slag Handling) | 1 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : E.P.C. Valve (Inner Parts)
| 20***50 | Solenoid Ass'Y | 2 |
| 20***60 | Solenoid Ass'Y | 2 |
| 21***00 | Valve Ass'Y,E.P.C | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Main Pump (1/3) (Except Japan) (Inner Parts)(#7001-10800)
| 01***32 | Washer, (Without Emergency Steering) | 4 |
| 04***20 | Pin,Dowel (Welded) | 4 |
| 04***15 | Ring, Snap | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Main Pump (1/4) (Except Japan) (Inner Parts)(#10801-)
| 01***32 | Washer, (Without Emergency Steering) | 4 |
| 04***20 | Pin,Dowel (Welded) | 4 |
| 04***15 | Ring, Snap | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Main Pump (2/3) (Except Japan) (Inner Parts)(#7001-10800)
| 01***23 | Washer,(For Shipping) | 4 |
| 04***20 | Pin,Dowel (Welded) | 4 |
| 70***60 | Seal,Ring | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Main Pump (2/4) (Except Japan) (Inner Parts)(#10801-)
| 01***23 | Washer,(For Shipping) | 8 |
| 01***32 | Washer, (Without Emergency Steering) | 4 |
| 04***20 | Pin,Dowel (Welded) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Main Pump (3/3) (Except Japan) (Inner Parts)(#7001-10800)
| 01***23 | Washer,(For Shipping) | 8 |
| 01***32 | Washer, (Without Emergency Steering) | 4 |
| 07***21 | O-Ring,Water Piping | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Main Pump (3/4) (Except Japan) (Inner Parts)(#10801-)
| 01***23 | Washer,(For Shipping) | 4 |
| 70***60 | Seal,Ring | 1 |
| 70***60 | Seal, Ring | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Main Pump (4/4) (Except Japan) (Inner Parts)(#10801-)
| 01***32 | Washer, (Without Emergency Steering) | 4 |
| 04***20 | Pin,Dowel (Welded) | 2 |
| 70***60 | Seal, Ring | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Offset Cylinder (Inner Parts)
| 01***25 | Bolt,Without Revolution Sensor | 1 |
| 01***19 | Nut | 1 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : P.P.C. Valve (Offset) (Inner Parts)(#13185-)
| 01***25 | Bolt, Seal Cover Mounting | 2 |
| 70***70 | Pilot Valve,(See Fig.Y1670-21a0) | 1 |
| 70***40 | Shim - 0.012 In. (0.30 mm) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : P.P.C. Valve (Offset) (Inner Parts)(#7001-13184)
| 20***51 | Valve Ass'Y,Offset Control | 1 |
| NY***16 | Pin,Split | 2 |
| NY***00 | Shim? 0.2mm | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Select Valve (For Multple Pattern)
| 01***25 | Bolt,(For Automatic) | 2 |
| 01***16 | Bolt (Op) | 18 |
| 01***23 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Service Kit
| 07***60 | O-Ring,(For Pc750?800?1800) (A2610) | 1 |
| 07***65 | O-Ring,Injection Pump Case | 1 |
| 07***70 | O-Ring,(For Intake Air Cover) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Slide Arm Cylinder (Inner Parts) (For Slide Arm)
| 01***18 | Nut | 1 |
| 07***48 | O-Ring,(F4350-64a0 -21 ) | 1 |
| 07***45 | O-Ring,(F4350-60a0 -9 ) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Swivel Joint (Inner Parts)
| 01***25 | Bolt | 4 |
| 04***20 | Ring, Retaining | 1 |
| 07***60 | O-Ring,(For Pc750?800?1800) (A2610) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Swivel Joint (Inner Parts) (For 2 Speed Travel)(#10801-)
| 01***25 | Bolt | 4 |
| 04***20 | Ring, Retaining | 1 |
| 07***55 | O-Ring,(F4350-62a1 -14 ) | 8 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Swivel Joint (Inner Parts) (For Power Tilt Mechanical Angle)
| 01***25 | Bolt | 4 |
| 04***20 | Ring, Retaining | 1 |
| 07***60 | O-Ring,(For Pc750?800?1800) (A2610) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Travel Motor (1/2) (Inner Parts)
| 04***16 | Pin | 1 |
| 04***12 | Pin,Spring (See Fig.0201) | 1 |
| 04***12 | Ring,Split, Ring-Snap | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Travel Motor (1/3) (Inner Parts) (For 2 Speed Travel)(#10801-)
| 06***04 | Bearing,Ball | 1 |
| 20***06 | Travel Motor Ass'Y | 2 |
| 20***70 | Shaft | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Travel Motor (2/2) (Inner Parts)
| 04***20 | Spring Pin | 7 |
| 04***12 | Ring, Snap (4) | 3 |
| 04***15 | Ring, Snap | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Travel Motor (2/3) (Inner Parts) (For 2 Speed Travel)(#10801-)
| 01***25 | Bolt,See Fig. K4010-65a0 | 7 |
| 20***30 | Pin | 1 |
| 20***00 | Body 1 Kit | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Service Kit And Component Parts : Travel Motor (3/3) (Inner Parts) (For 2 Speed Travel)(#10801-)
| 10***30 | O-Ring | 1 |
| 17***11 | Ring,Floating Seal | 1 |
| 20***30 | Gear,S2 | 1 |
Swing Circle And Related Parts
Komatsu : Pc28uu-2(S/N 7001-Up) : Swing Circle And Related Parts : Swing Circle
| 01***55 | Bolt, Mount Lh Bracket | 12 |
| 01***60 | Bolt, Tube To Oil Cooler | 16 |
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Swing Circle And Related Parts : Swing Machinery (Inner Parts)(#13185-)
| 01***80 | Capscrew | 2 |
| 01***32 | Washer, (Without Emergency Steering) | 7 |
| 04***18 | Ring, Snap | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Swing Circle And Related Parts : Swing Machinery (Inner Parts)(#7001-13184)
| 01***50 | Bolt,(With Service Valve R.H.) | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
| 07***55 | O-Ring,Front Accessory Drive | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Swing Circle And Related Parts : Swing Machinery And Motor(#13185-)
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 6 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 6 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Swing Circle And Related Parts : Swing Machinery And Motor(#7001-13184)
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Swing Circle And Related Parts : Swivel Joint And Related Parts
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
| 07***11 | Plug, Plug,(Without Bypass Hose) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Swing Circle And Related Parts : Swivel Joint And Related Parts (For 2 Speed Travel)(#10801-)
| 01***40 | Bolt,(With Air Conditioner) | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
| 20***60 | Elbow | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Swing Circle And Related Parts : Swivel Joint And Related Parts (For Power Tilt Mechanical Angle)
| 01***60 | Bolt,(For Japan And Sweden) | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
| 07***11 | Plug, Plug,(Without Bypass Hose) | 2 |
Travel And Lower Piping
Komatsu : Pc28uu-2(S/N 7001-Up) : Travel And Lower Piping : Final Drive
| 01***30 | Bolt,(Not Used With Emergency Str.) | 16 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 16 |
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Travel And Lower Piping : Final Drive (For 2 Speed Travel)(#10801-)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 16 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 16 |
| 07***11 | O-Ring,(Tm8202-009) | 6 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Travel And Lower Piping : Lower Piping
| 17***60 | Grommet | 1 |
| 20***90 | Hose | 1 |
| 21***10 | Hose | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Travel And Lower Piping : Lower Piping (For 2 Speed Travel)(#10801-)
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
| 17***60 | Grommet | 1 |
| 20***90 | Hose | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Travel And Lower Piping : Sprocket
| 01***30 | Bolt,(Not Used With Emergency Str.) | 18 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 18 |
| 20***10 | Sprocket | 2 |
Under Carriage
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Carrier Roller (For Rubber Shoe)(#7001-10800)
| 01***85 | Bolt,(For Perforated Mask) | 2 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 2 |
| 04***12 | Ring, Snap (4) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Carrier Roller (For Steel Shoe)(#7001-10800)
| 01***85 | Bolt,(For Perforated Mask) | 2 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 2 |
| 04***12 | Ring, Snap (4) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Carrier Roller(#10801-)
| 01***85 | Bolt,(For Perforated Mask) | 2 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 2 |
| 04***12 | Ring, Snap (4) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Front Idler
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***60 | Bolt, Tube To Oil Cooler | 8 |
| 01***45 | Capscrew - M10 X 1.25 | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Front Idler (For Steel Shoe)(#7001-10800)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***60 | Bolt, Tube To Oil Cooler | 8 |
| 01***45 | Capscrew - M10 X 1.25 | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Idler Cushion (For Rubber Shoe)(#7001-10800)
| 01***26 | Nut | 2 |
| 04***40 | Pin,Cotter (Kit) | 2 |
| 20***10 | Rod | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Idler Cushion (For Steel Shoe)(#7001-10800)
| 01***26 | Nut | 2 |
| 04***40 | Pin,Cotter (Kit) | 2 |
| 20***10 | Rod | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Idler Cushion(#10801-)
| 01***26 | Nut | 2 |
| 04***40 | Pin,Cotter (Kit) | 2 |
| 20***11 | Rod | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Rubber Shoe (Road Liner) (Width 300mm)
| 20***80 | Pin? Regular,Regular | 78 |
| 20***90 | Pin? Master,Master | 2 |
| 20***10 | Bushing | 80 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Track Frame
| 21***10 | Frame,Track | 1 |
| 21***10 | Frame,Track | 1 |
| 21***12 | Frame,Track | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Track Frame Cover
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***85 | Bolt,(For 2nd Travel Speed) (Op) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Track Guard (For Steel Shoe)
| 01***30 | Bolt-Hex, Bolt,(With Center Guard) | 12 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 12 |
| 20***13 | Guard,L.H. Paint (1) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Track Roller (For Rubber Shoe)(#7001-10800)
| 01***30 | Bolt-Hex, Bolt,(With Center Guard) | 16 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 16 |
| 07***21 | O-Ring,Water Piping | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Track Roller (For Steel Shoe)(#7001-10800)
| 01***30 | Bolt-Hex, Bolt,(With Center Guard) | 16 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 16 |
| 07***21 | O-Ring,Water Piping | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Track Roller(#10801-)
| 01***30 | Bolt-Hex, Bolt,(With Center Guard) | 16 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 16 |
| 07***21 | O-Ring,Water Piping | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Track Shoe (Rubber Shoe)
| 20***10 | Shoe,Rubber | 2 |
| 20***16 | Shoe,Rubber | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Under Carriage : Track Shoe (Steel Shoe)
| 20***90 | Pin,Master | 1 |
| 20***10 | Bushing | 2 |
| 20***61 | Track Shoe Ass'Y | 1 |
Work Equipment
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Arm (For Double Arm)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***20 | Bolt | 2 |
| 01***30 | Bolt | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Arm (For Breaker And 1-Actuater Attachment)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***20 | Bolt | 2 |
| 01***30 | Bolt | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Arm (Hydraulic Piping) (For Double Arm)
| 01***35 | Bolt, Cover | 2 |
| 01***11 | Nut,(Not Shown) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Arm (Long)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***20 | Bolt | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Arm Cylinder
| 21***22 | Cylinder Ass'Y,Arm (Uu) (See Fig.Y1620-11a0) | 1 |
| (2***2) | Cylinder Group,Arm (Uu) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Arm Potentiometer (For Breaker Arm)
| 01***20 | Bolt,(For Mono Lever Steering) | 3 |
| 01***30 | Bolt,(With Body Positioner) | 2 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Arm(#10801-)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***20 | Bolt | 2 |
| 01***30 | Bolt | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Arm(#7001-10800)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***20 | Bolt | 2 |
| 01***30 | Bolt | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Blade
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***75 | Fitting,Grease (Without Lub. Piping) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Blade Cylinder And Cover
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***16 | Bolt - Starting Motor Ground Cable | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Blade Tilt Cylinder (For Power Tilt Mechanical Angle)
| 20***21 | Tilt Cylinder Ass'Y,(Uu) (See Fig.Y1621-11a0) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Boom (1/3) (For Double Arm)
| 07***75 | Fitting,Grease (Without Lub. Piping) | 2 |
| 07***40 | Seal,Dust (Kit) | 2 |
| 07***55 | Seal,(Y1620-11a0a-3) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Boom (1/4) (For Breaker And 1-Actuater Attachment)
| 07***75 | Fitting,Grease (Without Lub. Piping) | 2 |
| 07***40 | Seal,Dust (Kit) | 2 |
| 07***55 | Seal,(Y1620-11a0a-3) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Boom (1/4) (For Slide Arm)
| 07***75 | Fitting,Grease (Without Lub. Piping) | 2 |
| 07***40 | Seal,Dust (Kit) | 2 |
| 07***55 | Seal,(Y1620-11a0a-3) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Boom (1/4)(#10801-)
| 07***75 | Fitting,Grease (Without Lub. Piping) | 2 |
| 07***40 | Seal,Dust (Kit) | 2 |
| 07***55 | Seal,(Y1620-11a0a-3) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Boom (1/4)(#7001-10800)
| 07***75 | Fitting,Grease (Without Lub. Piping) | 2 |
| 07***40 | Seal,Dust (Kit) | 2 |
| 07***55 | Seal,(Y1620-11a0a-3) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Boom (2/3) (Hydraulic Piping) (For Double Arm)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt - Relay Mounting | 6 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Boom (2/4) (Hydraulic Piping)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt - Relay Mounting | 6 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Boom (2/4) (Hydraulic Piping) (For Breaker)
| 01***25 | Bolt - Relay Mounting | 2 |
| 01***45 | Bolt | 2 |
| 07***20 | Hose | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Boom (2/4) (Hydraulic Piping) (For Slide Arm)
| 01***25 | Bolt - Relay Mounting | 6 |
| 01***50 | Screw | 3 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Boom (3/4) (Double Arm Related Parts) (For Double Arm)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***10 | Screw | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Boom (3/4) (Work Lamp And Slide Arm Related Parts)(For Slide Arm)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Boom (3/4) (Work Lamp)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 1 |
| 20***10 | Bracket | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Boom (4/4) (Pin And Rod)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 17 |
| 01***20 | Bolt | 2 |
| 01***30 | Bolt | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Boom (For Attachment Line) (For Breaker And 1-Actuater Attachment)
| 01***25 | Bolt - Relay Mounting | 2 |
| 01***45 | Bolt | 2 |
| 07***20 | Hose | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Boom Cylinder And Cover
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 20***10 | Guide | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Breaker (Chisel Mounting Parts)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***05 | Bolt, Mount Tube | 1 |
| 01***18 | Nut | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Breaker (Inner Parts)
| 07***00 | Fitting, Grease - Upper Hinge Pin | 1 |
| 07***04 | Bushing | 2 |
| 07***35 | Seal,Dust (Kit) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Breaker Accessary
| 20***60 | Chisel | 1 |
| 21***81 | Dummy Chisel | 1 |
| 21***90 | Link,(Dummy Link) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Breaker Arm
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Breaker Arm (Hydraulic Piping)
| 01***35 | Bolt,(For Fix Position) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 10***60 | Nipple | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket Cylinder
| 21***31 | Cylinder Ass'Y,(Uu) (See Fig.Y1620-41a0) | 1 |
| (2***1) | Cylinder Group,Bucket (Uu) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket Cylinder (For Double Arm)
| 21***31 | Cylinder Ass'Y,(Uu) (See Fig.Y1620-41a5) | 1 |
| (2***1) | Cylinder Group,(See Fig.Y1620-21a0) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket Link
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 04***12 | Lock,(With Rain Cap) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket Link (For Breaker Arm)
| 01***85 | Bolt, Mount Tubes To Switch And Work Pumps | 2 |
| 01***10 | Nut,(Without Air Conditioner) | 4 |
| 07***75 | Fitting,Grease (Without Lub. Piping) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket Link (For Double Arm)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 20***20 | Bushing | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket Pin
| 01***85 | Bolt, Mount Tubes To Switch And Work Pumps | 2 |
| 01***10 | Nut,(Without Air Conditioner) | 4 |
| 14***21 | O-Ring (Kit) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket Pin (For Double Arm)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 20***70 | Pin,(Bucket) | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket? 0.02m3 (Mini 0.04m3) Width 350mm (For Double Arm)
| 20***20 | Tooth (Welded) | 3 |
| 21***60 | Edge,Side (Welded) | 2 |
| 21***10 | Bucket | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket? 0.03m3 (Mini 0.05m3) Width 320mm(#10801-)
| 20***60 | Adapter (Welded) | 3 |
| 20***70 | Tooth | 3 |
| 20***81 | Pin | 3 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket? 0.03m3 (Mini 0.05m3) Width 320mm(#7001-10800)
| 01***15 | Nut | 6 |
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 6 |
| 09***14 | Nut | 6 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket? 0.04m3 (Mini 0.07m3) Width 420mm(#10801-)
| 20***60 | Adapter (Welded) | 3 |
| 20***70 | Tooth | 3 |
| 20***81 | Pin | 3 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket? 0.04m3 (Mini 0.07m3) Width 420mm(#7001-10800)
| 01***15 | Nut | 6 |
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 6 |
| 09***14 | Nut | 6 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket? 0.07m3 (Mini 0.11m3) Width 500mm(#10801-)
| 20***51 | Lip (Welded) | 1 |
| 20***60 | Adapter (Welded) | 4 |
| 20***70 | Tooth | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket? 0.07m3 (Mini 0.11m3) Width 500mm(#7001-10800)
| 01***15 | Nut | 6 |
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 8 |
| 09***14 | Nut | 8 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket? 0.08m3 (Mini 0.12m3) Width 600mm(#10801-)
| 20***60 | Adapter (Welded) | 4 |
| 20***70 | Tooth | 4 |
| 20***81 | Pin | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Bucket? 0.08m3 (Mini 0.12m3) Width 600mm(#7001-10800)
| 01***15 | Nut | 6 |
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 8 |
| 09***14 | Nut | 8 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Double Arm
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 20***20 | Bushing | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Hitch (For Double Arm)
| 01***85 | Bolt, Mount Tubes To Switch And Work Pumps | 3 |
| 01***10 | Nut,(Without Air Conditioner) | 6 |
| 20***70 | Pin | 3 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Hydraulic Piping (Blade Cylinder Line) (For Power Tilt Mechanicalangle)
| 17***10 | Grommet | 2 |
| 20***90 | Hose | 1 |
| 21***10 | Hose | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Offset Cylinder
| 21***41 | Cylinder Ass'Y,(See Fig.Y1620-21a0) | 1 |
| (2***1) | Cylinder Group | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Power Tilt Mechanical Angle Blade (1/2)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Power Tilt Mechanical Angle Blade (2/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 3 |
| 01***16 | Bolt - Starting Motor Ground Cable | 2 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Reinforced Bucket? 0.07m3 (Mini 0.11m3) Width 500mm(#10801-)
| 20***51 | Lip (Welded) | 1 |
| 20***60 | Adapter (Welded) | 4 |
| 20***70 | Tooth | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Reinforced Bucket? 0.07m3 (Mini 0.11m3) Width 500mm(#7001-10800)
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 8 |
| 09***14 | Nut | 8 |
| 10***11 | Tooth (Op) | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Slide Arm (1st) (1/2)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***20 | Bolt | 2 |
| 01***30 | Bolt | 4 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Slide Arm (2nd) (2/2)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 16 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Slide Arm (Hydraulic Piping)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
Komatsu : Pc28uu-2(S/N 7001-Up) : Work Equipment : Slide Arm Cylinder (For Slide Arm)
| 21***61 | Cylinder Ass'Y,(See Fig.Y1625-11a0) | 1 |
PC28UU-2(S/N 7001-UP) serial number reference
The nameplate is riveted to the frame on the right-hand side of the machine, typically near the base of the operator's seat/lower frame or on the swing-frame post beneath the cab or canopy, with the serial often re-stamped into the frame casting itself. This compact excavator line does not use a 3-character alpha PIN prefix system — the plate reads the model name followed by a plain numeric serial (7001 and up). Read the number as the production-sequence marker (the 10801 point marks a documented running change), not as a coded plant/year prefix.
| Prefix | Identifies | Notes |
|---|---|---|
| 7001 | PC28UU-2 (JPN), initial production block, S/N 7001-10800 | Zero-tail-swing compact excavator, canopy or cab upper structure. Fitted with a Yanmar-built 3D84N-2FA 3-cylinder diesel in the ~24 hp class. Factory parts book for this range is issued as a separate volume from the 10801-up book, and running gear (undercarriage rollers, travel motor internals, bucket width) differs from the later block. Confirm exact build year with your dealer — units in this block generally trace to the early-to-mid 1990s. |
| 10801 | PC28UU-2 (JPN), later production block, S/N 10801-UP | Same base machine and Yanmar 3D84N-2FA engine as the 7001 block. Factory parts book splits at this serial for a running change: travel motor internals changed for 2-speed travel, and bucket width specs were revised. Not a separate model — same PC28UU-2(S/N 7001-UP) family, later parts-book volume. A related PC28UU-2E carries a two-piece offset boom and runs in higher serial territory above this block; it is a distinct model designation — do not merge its data into this range, and confirm the boundary with your dealer if working near that serial territory. |
Frequently asked questions
What engine does the Komatsu PC28UU-2 (S/N 7001-UP) use?
A Yanmar-built 3-cylinder, water-cooled, naturally aspirated diesel, documented across factory and dealer sources as 3D84N-2FA or 3D84, displacing roughly 1.33-1.4 L and rated near 24 hp (17.7-18.1 kW). It's mechanically governed with no engine control module, so it sets no engine fault codes, only analog warning lamps for oil pressure, coolant temperature, and charging.
What's the operating weight of the PC28UU-2 (S/N 7001-UP)?
2,740 kg (6,042 lb) in the single standard configuration documented for this serial range, a 2.7-2.8 tonne zero-tail-swing mini excavator. No long-undercarriage or wide-track version is documented separately for this model.
What replaced the Komatsu PC28UU-2 (S/N 7001-UP)?
Nothing replaced it as a clean model-for-model swap. Within the same serial family, S/N 10801-up carries a running change (2-speed travel motor, revised bucket width/capacity) but stays the same model. A related PC28UU-2E offset-boom variant uses a distinct model number and higher serials. No later Komatsu compact excavator is documented as its direct catalog successor; confirm any specific replacement with your dealer.
What PC28UU-2(S/N 7001-UP) owners discuss
Owners report the boom and arm suddenly lose lift power with a fault code on the monitor. What's really going on?
This is one of the more repeated complaints for this machine: boom and arm won't raise or curl while swing and bucket functions keep working normally, with a numbered fault showing on the display. In most cases the cause traces back to the boom/arm pressure-sensing potentiometer or its wiring into the controller mounted under the seat, not the hydraulic pump or main valve. Before condemning any hydraulic component, check the harness connectors and fuses near the controller for corrosion or a loose pin — that alone clears a large share of these faults. Because an unexpected loss of boom control is a safety issue, have your dealer verify pilot pressure and run a full controller diagnostic before replacing hydraulic parts.
Is weak digging or curl-down force ('no down pressure') a common gripe, and what usually causes it?
Yes, reduced digging force or a boom/arm that won't push down with authority comes up regularly on this size machine. The usual suspects, in order of likelihood, are low hydraulic fluid or a clogged suction/return filter, a main relief valve that has drifted out of spec or is sticking, and general pump wear on higher-hour units. Field advice is to work from simple to complex: confirm fluid level and filter condition first, then check relief valve pressure at the test port, and only suspect the pump itself if pressure still reads low with everything else in spec.
What starting and stalling quirks show up with this machine's Yanmar-built diesel (3D84N-2FA / 3D84 family)?
Owners describe two recurring patterns: stalling under load with a hard time restarting, and intermittent no-start with only a clicking sound from the starter circuit. Stalling under load is most often traced to contaminated fuel or a clogging fuel/water separator rather than an engine fault. The clicking no-start is usually a weak battery connection or a failing starter solenoid rather than the starter motor itself. In cold weather, this small three-cylinder diesel needs its glow plug preheat cycle run in full — skipping or shortening it, or one dead glow plug in the bank, is enough to cause a hard cold start even though the engine cranks fine.
What electrical or charging complaints turn up in the field?
A charge light that stays lit — sometimes even after the alternator itself has already been replaced — is a known headache. The pattern reported is good voltage at the alternator's output terminal but low voltage reaching the battery, which points to a blown fusible link, a corroded ground strap, or a loose connector in the charging circuit rather than the alternator. A slipping or loose fan belt can mimic the same symptom. Working through wiring and grounds with a meter before swapping more electrical parts saves needless part-chasing.
What undercarriage and rubber-track wear patterns are typical for a machine this size?
Rubber tracks in this weight class show wear as torn or chunked lugs, visibly shallowed tread, or a track that runs loose and tends to walk on the rollers. A track that looks loose isn't always worn out — low track grease/tension adjustment is a common and cheaper cause, so check tension before assuming the track itself is done. Persistent looseness accelerates roller and idler wear, so owners who keep tension in spec generally get longer life out of the whole undercarriage, not just the tracks.
How do you tell a worn swing motor or dragging brake from an undercarriage or final-drive problem?
Weak or hesitant swing rotation under load, especially if it worsens gradually, points to internal wear (bypass) inside the swing motor, a swing relief valve that's drifted out of adjustment, or a swing brake that isn't releasing fully due to low pilot pressure or contaminated brake oil. For travel, one track running noticeably slower than the other is commonly blamed on the travel motor, but check track tension and roller condition first since a tight or worn undercarriage can load down a good motor and mimic this symptom. If tracks and rollers check out, compare hydraulic pressure at both travel motor test ports under load — equal pressure with unequal speed confirms a motor-side problem on the slow side. Because a dragging or partially-releasing swing brake is a safety concern around bystanders, have your dealer verify brake release pressure before returning the machine to work.
What should you check before buying a used PC28UU-2 in the S/N 7001-up range?
Confirm the machine you're looking at is actually this generation and serial range — running gear, controller, and wiring differ enough from the earlier PC28UU/PC28UU-1 and the later PC28UU-2E that parts and troubleshooting steps don't carry over cleanly. Beyond that, walk through: fluid and filter service history (engine oil, hydraulic oil, coolant, air/fuel filters); hour meter reading versus visible wear on pedals, seat, and controls; a full hydraulic function test under load (boom and arm lift and curl, bucket, swing) checking for the pressure and control-fault issues described above; swing action for smooth, precise starts and stops with no brake drag; undercarriage and rubber-track condition and tension; charging system behavior (does the warning light clear and stay off); and any stored fault codes on the monitor. A machine with a thin service history and unexplained fault codes is a bigger risk on this size of excavator than the hour meter alone suggests.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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