Komatsuhydraulic excavatorsmall ( - pc90)
Komatsu PC110R-1(S/N 2265000001-Up)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu PC110R-1 is a 10.5-11.2 tonne (23,300-24,700 lb) class hydraulic crawler excavator built around a swing-offset boom and Komatsu's reduced tail-swing "R" body, designed to dig close to walls, curbs, and other obstacles a standard-radius machine cannot approach. Power comes from a turbocharged Komatsu S4D106-1FB four-cylinder diesel rated at roughly 71.8 kW (96.3 hp) gross and 69.3 kW (92.9 hp) net, meeting EU Stage II emissions with no exhaust aftertreatment. Komatsu built the PC110R-1 line from around 1999 into the 2000s under a shared 2265-prefixed serial block, with the S/N 2265000001-Up range covering the earliest production; the model shares its engine-generation design with the wheeled PW110R-1 sister machine. Buyers could spec 500 mm or 600 mm track shoes, a single-piece monoboom or the two-piece offset boom, a choice of dipper-arm lengths, a dozer blade, and optional cab air conditioning.
Komatsu carried the PC110R-1 name across several serial-number production breaks -- later blocks starting around S/N 2265000306 and S/N 2265010001 -- picking up running changes such as expanded air-conditioning provisions and revised operator's-manual content rather than a new model number, and KOMTRAX telematics became standard partway through the run. There was no direct "-2" successor carrying the PC110R name forward; once the line left Komatsu's European catalog, the company's own product materials pointed buyers toward the reduced-swing PC88MR-11, a lighter machine, as the nearest continuing model. In the used and parts market the PC110R-1 still earns its keep on utility, municipal, and residential-grade jobs where its short-swing footprint fits where a standard excavator cannot; demand centers on S4D106 engine wear items, center-swivel-joint and swing counterbalance-valve seals, offset-boom cylinder and pivot hardware, and undercarriage wear components, several of which cross over with sibling Komatsu machines from the same design generation.
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 PC110R-1(S/N 2265000001-Up) specifications
Engine
| Engine model | Komatsu S4D106-1FB, turbocharged direct-injection 4-cylinder diesel, low-emissions design |
| Gross power (ISO 14396) | 71.8 kW / 96.3 HP at 2,000 rpm |
| Net power | 69.3 kW / 92.9 HP |
| Max torque (80/1269/EC) | 400 Nm (295 lb-ft) at 1,500 rpm |
| Displacement | 4.412 L / 4,412 cm³ (269.2 cu in) |
| Cylinders | 4, inline |
| Emissions tier | EU Stage II |
Weights
| Operating weight, 500 mm shoes, monoboom | 10,560 kg (23,280 lb) |
| Operating weight, 500 mm shoes, two-piece (offset) boom | 10,980 kg (24,206 lb) |
| Operating weight, 600 mm shoes, monoboom | 10,800 kg (23,810 lb) |
| Operating weight, 600 mm shoes, two-piece (offset) boom | 11,220 kg (24,736 lb) |
| Ground pressure | Not documented for this configuration in available factory literature; verify with a dealer |
Dimensions
| Transport length | 6.48 m (21 ft 3 in), monoboom with 2,000 mm arm |
| Transport width (track gauge, 500 mm shoes) | 2.40 m (7 ft 10 in) |
| Transport height | 2.79 m (9 ft 2 in) |
| Track shoe width | 500 mm (19.7 in) standard steel shoes; 600 mm (23.6 in) optional |
| Tail swing radius / ground clearance / undercarriage length | Not documented for this exact configuration in available factory literature; verify with a dealer |
Performance
| Max digging depth | 4.25 m (13 ft 11 in) with 2,000 mm standard arm; ranges 4.10 m (13 ft 5 in) short arm (1,850 mm) to 4.56 m (14 ft 11 in) long arm (2,300 mm) |
| Max digging reach | 6.35 m (20 ft 10 in) with standard arm; ranges 6.25 m (20 ft 6 in) short arm to 6.53 m (21 ft 5 in) long arm |
| Max dump height / max cutting height | Not documented for this exact configuration in available factory literature; verify with a dealer |
| Swing speed | 9 rpm |
| Travel speed | 4.1 km/h (2.5 mph) high range; 2.8 km/h (1.7 mph) low range |
| Gradeability | 70%, limited by engine lubrication at incline |
| Drawbar pull (max traction force) | 81.4 kN / 8,300 kgf (18,300 lbf) |
Forces
| Bucket digging (breakout) force | 73.5 kN / 7,500 kgf (16,530 lbf), per ISO 6015 |
| Arm (stick) digging force, standard 2,000 mm arm | 42.35 kN / 4,319 kgf (9,522 lbf), per ISO 6015; force is somewhat higher with the short arm and lower with the long arm, exact figures for those lengths not published |
Service capacities (summary)
| Fuel tank | 150 L (39.6 US gal) |
| Hydraulic system/tank | 84 L (22.2 US gal) |
| Engine oil | 12.5 L (3.3 US gal) |
| Cooling system | 18 L (4.8 US gal) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
PC110R-1(S/N 2265000001-Up) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | 12.5 L (3.3 US gal), first fill and drain-refill the same | Diesel engine oil, API CD, SAE 15W-30 as factory fill. Climate chart calls for SAE 10W below roughly -20C, SAE 30 in temperate range, SAE 40 in hot climates, or multigrade SAE 15W-30 / SAE 5W-30 across a wide temperature band. Start with SAE 10W, 15W-30 or 5W-30 whenever cold-starting below 0C. |
| Cooling system | 18 L (4.8 US gal) | Permanent ethylene-glycol antifreeze with corrosion and anti-foam inhibitors, mixed 50/50 with soft/drinking water, rated to about -36C. Do not use methanol-, ethanol- or propanol-based antifreeze, and do not mix antifreeze brands. |
| Fuel tank | 150 L (39.6 US gal) | Diesel fuel, ASTM D975 No. 2 above about -10C; switch to winter-grade ASTM D975 No. 1 below -10C. |
| Hydraulic system total / hydraulic tank | Total system (first fill, incl. cylinders and lines): 160 L (42.3 US gal). Tank service-fill quantity for routine changes: 84 L (22.2 US gal) | Hydraulic oil, API CD, SAE 10W as factory fill; SAE 5W-30 for colder climates. A factory-homologated HEES-type synthetic biodegradable hydraulic oil is offered as an alternate fill for environmentally sensitive sites, but it cannot be mixed with mineral hydraulic oil and is not usable in the engine, transmission, or brakes. |
| Final drive / travel reduction gear (each side) | 2 L (0.53 US gal) per side, first fill and change | Gear oil, API GL5, SAE 85W-90, used across nearly the full ambient temperature range per the factory chart. |
| Swing drive / swing reduction gear | 3.5 L (0.92 US gal), first fill and change | Gear oil, API GL5, SAE 85W-90. |
| Pilot/servo circuit | No separate reservoir or listed capacity; drawn from the main hydraulic tank | Same hydraulic oil as the main system, protected by its own dedicated servo-control filter cartridge with a scheduled element change. |
| Grease (spec only) | No fixed volume specified; lubricated to fill at each grease point. Swing ball-bearing ring/pinion housing is checked to roughly half the ring-tooth height on a dipstick, about 100 mm | NLGI 2 lithium EP grease with molybdenum disulfide (MoS2) for boom, arm, bucket and equipment pin articulations. NLGI 2 lithium EP grease (no MoS2) for the track-tensioner cylinder. NLGI 2 calcium-based grease for the swing ball-bearing ring and pinion housing. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu PC110R-1(S/N 2265000001-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 PC110R-1(S/N 2265000001-Up) beyond the schedule
Predictive Maintenance & Fluid Analysis
Sample engine oil at every 500-hour drain on the S4D106 diesel; rising soot or fuel dilution flags injector wear or turbo shaft-seal weep before smoke or power loss appears. Watch the center swivel (rotary manifold) for internal bypass -- weak or uneven travel with normal digging power signals worn seals, not a pump fault. Check hydraulic oil cleanliness at each 2000-hour change; contamination accelerates offset-boom cylinder and pivot-pin wear. Inspect the frame below the cab where it meets the boom foot for early crack lines at every service.
Corrective & Common Repairs
Sluggish or one-sided swing with normal digging function usually traces to dirt plugging the small orifice in the swing counterbalance/safety valve, or a stuck shuttle valve -- check before condemning the swing motor or pump. Weak, uneven travel with good digging power points to the center swivel joint bypassing oil internally through worn seals. Corroded connectors, a weak battery, or a bad ground cause most starting and gauge-sender complaints on this mechanically governed engine. Offset-boom cylinder pivot pins develop play if greasing intervals slip; replace them before they score the bore.
Overhaul & Rebuild Points
The known rebuild point on this platform is the main frame's narrow section below the cab and fuel tank where it meets the boom foot; a stress crack there calls for a lengthwise reinforcing weld with proper preheat, not a quick cap pass, or it recracks nearby. Plan swing reduction-gear and center-swivel-joint reseal work alongside pump or valve overhauls once hours climb. On the S4D106 diesel, turbo shaft-seal weep and injector wear are the typical overhaul-driving faults. Undercarriage rollers, idlers, and sprockets wear steadily and drive most rebuild budgets.
Seasonal & Environment Servicing
Cold weather hits this mechanically governed diesel through the electrics first: check battery, connections, and coolant freeze protection before winter, since a weak battery or corroded ground is the usual no-start complaint. In hot or dusty conditions, clean the radiator and oil cooler fins more often than the standard 500-hour interval; the tight engine bay overheats quickly once fins clog. Mud and wet trenches pack grit into the swing-offset boom pivots and boom-foot frame section faster than a standard-swing machine, so grease those points and inspect the swivel joint often.
PC110R-1(S/N 2265000001-Up) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| YM129470-55610 | Body, Fuel Filter | Fuel system service | Check fitment → |
| YM120324-55760 | Element, Fuel Oil | Fuel system service | Check fitment → |
| YM119005-35100 | Oil Filter Ass'Y | Lubrication service | Check fitment → |
| 21D-60-11170 | Oil Filter, Assembly | Lubrication service | Check fitment → |
| 226-60-11120 | Intake Oil Filter | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
PC110R-1(S/N 2265000001-Up) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| Generator warning lamp (charge lamp) | Battery-charging circuit indicator; lit with the key at start position, should go out once engine speed rises above idle | Alternator not charging, slack or broken fan/alternator belt, loose or corroded battery and alternator wiring, discharged battery | Check belt tension and wiring/terminal condition, test alternator output; if the lamp stays lit during operation, stop the engine to avoid running the battery flat and inspect the charging circuit |
| Engine oil pressure warning lamp | Engine lubrication pressure has dropped below the safe minimum | Low oil level, clogged oil filter, wrong oil viscosity for ambient temperature, worn oil pump or bearings | Stop the engine immediately, check and top up oil level, replace the oil filter; if the lamp stays on with correct oil level, check the oil pressure sender and oil pump before restarting |
| Air cleaner clogging warning lamp | Intake air filter restriction has reached the trip point of the air-filter restriction switch | Dust-loaded or damaged air filter element, blocked intake ducting | Stop the engine, inspect and clean or replace the filter element, check ducting for damage, confirm the lamp clears after restart |
| Pre-heating (glow) indicator lamp | Shows the intake-air preheating circuit is energized for cold-start assist; a normal-operation indicator, not itself a fault | Standard cold-ambient start sequence; stays lit through the preheat cycle before cranking | Wait for the lamp to go out before cranking; if it fails to light in cold weather or stays on abnormally long, check the preheating relay and glow element circuit |
| Engine coolant temperature gauge - red (overheat) range | Coolant temperature has risen out of the normal 80-85 degC (176-185 degF) band into the overheat range, with buzzer | Low coolant level from a leak, slack fan belt, clogged or damaged radiator fins, faulty thermostat, or a faulty gauge/sender | Idle or stop the engine to cool down, check coolant level and look for leaks, check belt tension and clean radiator fins; replace the thermostat or sender if the fault repeats with coolant level correct |
| Fuel level gauge - red (low fuel) range | Fuel remaining in the tank has dropped into the low-level warning band | Tank running low in normal use, or a gauge/sender fault if the reading is inaccurate | Refuel promptly to avoid drawing air into the fuel system; if the tank runs dry and air enters the supply circuit, bleed the fuel system before restarting |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
PC110R-1(S/N 2265000001-Up) attachments & work tools
Buckets
General-purpose (GD) buckets for this excavator run about 0.09-0.4 m³ (0.12-0.52 cu yd) heaped, in widths from roughly 300 mm to 1,000 mm (12-39 in). Wider light-duty buckets are also offered: a ditch-cleaning bucket near 1,800 mm (71 in) and a ditch-digging bucket near 2,100 mm (83 in) at about 45°. HD and rock buckets use the same width bracket with heavier plate and tooth packages; exact capacity and width depend on the profile chosen. Bucket breakout force is factory-rated near 42 kN (about 9,400 lbf). Both pin-on and quick-coupler mount buckets are used on this class.
Hydraulic hammers
This machine sits in the roughly 10-13 t carrier bracket. The compact-class breaker line built for that bracket runs about 700-900 kg (1,540-1,980 lb) breaker weight, using a combined hydraulic/nitrogen-gas impact system that needs no external accumulator. Third-party breaker makers size their medium-duty hammers to the same 10-13 t carrier class. Match breaker weight, hydraulic flow, and relief pressure to the carrier's auxiliary circuit before fitting - carrier weight alone does not size the tool correctly.
Quick couplers
Both mechanical and hydraulic quick couplers fit this excavator class. Fully-hydraulic, automatic symmetric couplers are also offered for this weight range - the coupler makes the hydraulic connection to a powered tool from inside the cab, without manually swapping hose ends. Coupler capacity classes are rated across a wide machine-weight band, so match the coupler to the boom-end pin size and rated working load, not just operating weight.
Thumbs/grapples
Hydraulic clamp-style thumbs, pivoting off the arm, are used on this class for pipe, rock, and debris handling; mechanical (manually-indexed) thumbs are the lower-cost alternative where hydraulic circuit capacity is tight. Powered grapples (rock, demolition, sorting/rotating types) sized for roughly the 2-15 t excavator bracket fit this machine. Thumb and grapple pin diameter and linkage geometry are specific to this machine's arm/bucket set, not interchangeable across all excavator sizes.
Rippers
Single- or multi-shank ripper attachments, either boom/arm-mounted or bolt-on tooth style, sized for the sub-15 t excavator bracket are used on this class to scarify compacted ground, frost, or soft rock ahead of digging. No dedicated factory ripper attachment is documented for this specific model; ripper attachments fitted to this class come from the aftermarket attachment sector, sized to the machine's arm/boom-end connection.
Hydraulic-kit notes
Auxiliary hydraulic flow and pressure on this excavator are adjustable at the valve/circuit level, which is what lets breakers, thumbs, and other powered tools run off the same base machine. Combined main-pump flow for the boom/arm/bucket/travel circuit is roughly in the 150-180 l/min (40-48 gpm) range, figures vary by source/configuration; hydraulic tank capacity is about 84 L (22 gal). Any powered attachment must have its flow and relief-pressure setting matched to this circuit - running a tool outside its rated window risks damage to the tool or the machine's hydraulic system.
All PC110R-1(S/N 2265000001-Up) assemblies by section
Every catalogued assembly group for the Komatsu PC110R-1(S/N 2265000001-Up). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Control System And Revolving Frame
Komatsu : Pc110r-1(S/N 2265000001-Up) : Control System And Revolving Frame : Fuel Control Lever
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Control System And Revolving Frame : Hydraulic Piping (2nd Boom Ppc Valve Line)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 14***10 | Pedal Cap | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Control System And Revolving Frame : Hydraulic Piping (Arm And Swing Ppc Valve Line) (1/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***20 | Screw | 4 |
| 21***80 | Union | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Control System And Revolving Frame : Hydraulic Piping (Arm And Swing Ppc Valve Line) (2/2)
| 21***20 | Union | 2 |
| 21***60 | O-Ring | 4 |
| 21***50 | Hose | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Control System And Revolving Frame : Hydraulic Piping (Blade Valve Line)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 21***30 | Nut | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Control System And Revolving Frame : Hydraulic Piping (Boom And Bucket Ppc Valve Line) (1/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***20 | Screw | 4 |
| 21***80 | Union | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Control System And Revolving Frame : Hydraulic Piping (Boom And Bucket Ppc Valve Line) (2/2)
| 21***10 | Union Tee | 1 |
| 21***60 | O-Ring | 3 |
| 21***40 | Hose | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Control System And Revolving Frame : Hydraulic Piping (Boom Swing Ppc Valve Line)
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Control System And Revolving Frame : Hydraulic Piping (Travel Ppc Line) (1/2)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 21***30 | Elbow | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Control System And Revolving Frame : Hydraulic Piping (Travel Ppc Line) (2/2)
| 21***80 | Union | 2 |
| 21***70 | Union | 1 |
| 21***50 | O-Ring | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Control System And Revolving Frame : Revolving Frame
| 01***80 | Bolt | 4 |
| 21***10 | Washer | 8 |
| 22***10 | Frame, Revolving | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Control System And Revolving Frame : Servocontrol System Starting Lever
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 21***30 | Switch | 1 |
| 21***20 | Nut | 1 |
Engine
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Air Intake Manifold
| YM***00 | Heather Air | 1 |
| YM***02 | Screw | 9 |
| YM***41 | Pipe | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Camshaft And Driving Gear
| YM***50 | Bearing, Thrust | 1 |
| YM***00 | Gear,Injection Pump Drive | 1 |
| YM***00 | Gear | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Cooling Water System
| YM***40 | Tube | 1 |
| YM***02 | Screw | 2 |
| YM***10 | Protector | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Crankshaft And Piston
| YM***00 | Connecting Rod, Assembly | 4 |
| YM***00 | Assembly, Piston (+0.25 mm) | 4 |
| YM***80 | Gear, Ring | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Cylinder Block
| YM***00 | Screw | 18 |
| YM***20 | Screw | 10 |
| YM***40 | Bearing, Thrust (+0.25 mm) | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Cylinder Head
| 22***00 | Motor, Assembly | 1 |
| 72***00 | Head,Assembly | 1 |
| YM***00 | Lifter | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Engine Stop Device
| YM***00 | Pin, Cotter | 2 |
| YM***02 | Nut | 1 |
| YM***20 | Joint | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Exhaust Manifold And Silencer
| YM***80 | Packing | 1 |
| YM***22 | Screw | 6 |
| YM***00 | Muffler | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Feed Pump
| YM***40 | Gasket | 4 |
| YM***60 | O-Ring | 2 |
| YM***00 | Screw | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Flywheel - Lubricating Oil Sump
| YM***10 | Oil Sump | 1 |
| YM***80 | Parallel Pin | 2 |
| YM***52 | Screw | 10 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Fuel Injection Line
| YM***40 | Injection Pipe N. 4 | 1 |
| YM***02 | Bolt Plated | 1 |
| YM***20 | Spring | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Fuel Injection Pump
| YM***00 | Segment | 4 |
| YM***40 | Gasket | 2 |
| YM***30 | Shim, 0.400 mm | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Fuel Line
| YM***02 | Screw | 1 |
| YM***10 | Banjo Fitting | 1 |
| YM***80 | Screw | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Gasket Set
| YM***80 | Packing | 1 |
| YM***10 | O-Ring | 1 |
| YM***40 | O-Ring,Drain Plug | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Gear Housing
| YM***02 | Bolt Plated | 7 |
| YM***10 | O-Ring | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Generator
| YM***20 | Timer,Solenoid | 1 |
| YM***40 | Distance Piece | 1 |
| YM***40 | Screw | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Governor
| YM***00 | Gasket | 1 |
| YM***40 | Screw | 5 |
| YM***00 | Screw | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Lubricating Oil System (1/2)
| YM***02 | Bolt Plated | 4 |
| YM***00 | Oil Filter Ass'Y | 1 |
| YM***00 | Gauge, Oil Level | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Lubricating Oil System (2/2)
| YM***81 | Retainer | 1 |
| YM***50 | Oil Pressure Transmitter | 1 |
| YM***00 | Retainer | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Starter Motor
| YM***20 | Shift Lever Ass'Y | 1 |
| YM***10 | Housing | 1 |
| YM***60 | Cover, Rear | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine : Turbocharger
| YM***02 | Nut | 4 |
| YM***22 | Stud | 4 |
| YM***90 | Packing | 1 |
Engine Related Parts And Electrical System
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine Related Parts And Electrical System : Air Cleaner And Mounting
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine Related Parts And Electrical System : Battery
| 01***20 | Bolt,(With Auto Emergency Steering) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine Related Parts And Electrical System : Dashboard, R.H.
| 20***30 | Starting Switch,Starting | 1 |
| 21***60 | Switch, Switch | 2 |
| 21***10 | Bulb | 9 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine Related Parts And Electrical System : Electrical System (Engine Line)
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Bolt | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine Related Parts And Electrical System : Electrical System (Fuse And Line)
| 01***16 | Screw | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 21***10 | Connector | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine Related Parts And Electrical System : Electrical System (Light And Service Line) (1/2)
| 01***14 | Bolt | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***23 | Washer,(With Auto Emergency Steering) | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine Related Parts And Electrical System : Electrical System (Light And Service Line) (2/2)
| 01***20 | Bolt,(Without Maintenance Monitor) | 2 |
| 01***23 | Washer,(With Auto Emergency Steering) | 2 |
| 21***20 | Electrical Socket | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine Related Parts And Electrical System : Engine Mounting Parts
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 16 |
| 01***40 | Bolt | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 16 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine Related Parts And Electrical System : Fuel Piping
| 01***25 | Bolt,Without Revolution Sensor | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
| 21***81 | Cock | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine Related Parts And Electrical System : Fuel Tank
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 6 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine Related Parts And Electrical System : Left Dashboard
| 21***30 | Screw | 5 |
| 21***30 | Screw | 3 |
| 21***10 | Screw | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine Related Parts And Electrical System : Muffler And Piping
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine Related Parts And Electrical System : Power Take Off
| 01***35 | Screw | 8 |
| 01***40 | Bolt,See Fig. K4010-64a0 | 12 |
| 21***80 | Washer,Spring | 12 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine Related Parts And Electrical System : Radiator
| 01***20 | Bolt,(Without Maintenance Monitor) | 4 |
| 01***60 | Bolt, Tube To Oil Cooler | 2 |
| 01***40 | Screw | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Engine Related Parts And Electrical System : Self Fuel Supply Pump
| 01***14 | Bolt | 4 |
| 01***23 | Washer,(With Auto Emergency Steering) | 4 |
| 21***80 | Filter | 1 |
Guard And Operator'S Cab
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Cabin (1/6)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***25 | Bolt,See Fig. K4010-65a0 | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Cabin (2/6)
| 01***04 | Nut,(For Air Conditioner Less) | 4 |
| 01***08 | Washer,(For Fixed Type Ripper) | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Cabin (3/6)
| 01***25 | Bolt,(For Automatic) | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 10 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 9 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Cabin (4/6)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 4 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Cabin (5/6)
| 21***40 | Ring, Snap | 8 |
| 21***30 | Spacer | 16 |
| 21***10 | Roof Hatch, Assembly | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Cabin (6/6)
| 21***10 | Screw | 4 |
| 21***20 | Screw | 4 |
| 21***40 | Screw | 16 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Control Valve Side Cover
| 01***20 | Bolt,(With Auto Emergency Steering) | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***40 | Screw | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Electrical System (Operator'S Cab)
| 01***30 | Bolt | 1 |
| 01***14 | Screw | 3 |
| 01***04 | Nut,(For Air Conditioner Less) | 3 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Engine Side Cover
| 01***20 | Bolt,(With Auto Emergency Steering) | 15 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 10 |
| 01***40 | Screw | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Floor Plate (1/2)
| 01***25 | Bolt,Without Revolution Sensor | 10 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***10 | Bolt (Itl) | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Floor Plate (2/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 8 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Heating System (1/2)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Heating System (2/2)
| 21***60 | Hose-Clamp | 1 |
| 21***60 | Hose-Clamp | 5 |
| 21***10 | Air Intake | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Operator'S Cab (Equipment)
| 01***05 | Nut,(For Air Conditioner Less), Nut | 2 |
| 01***23 | Washer,(With Auto Emergency Steering) | 2 |
| 21***20 | Screw | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Operator'S Seat
| 01***14 | Screw | 4 |
| 01***80 | Screw | 2 |
| 21***60 | Washer,Spring | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Revolving Frame Under Cover
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 22 |
| 01***32 | Washer,(With Auto Emergency Steering) | 22 |
| 21***60 | Gasket | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Sound-Proofing
| 21***30 | Screw | 4 |
| 21***20 | Rabbet | 29 |
| 21***30 | Sheet | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Guard And Operator'S Cab : Top And Front Guard (Cab)
| 01***55 | Bolt, Mount Tube To Switch Pump | 2 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 4 |
| 01***65 | Bolt, Mount Radiator To Frame (Bottom) | 2 |
Mark Plate
Komatsu : Pc110r-1(S/N 2265000001-Up) : Mark Plate : Mark Plate
| 22***00 | Kit, Basic Sticker | 1 |
| 22***10 | Mark Plate, Hammer - Rotating And Cutting Shovel | 1 |
| 22***20 | Plate, Operating, Raising Capacity (For 1-Piece B | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Mark Plate : Tools
| 21***70 | Wrench | 1 |
| 21***40 | Wrench, Strainer | 1 |
| 21***80 | Grease Pump | 1 |
Swing Circle And Final Drive
Komatsu : Pc110r-1(S/N 2265000001-Up) : Swing Circle And Final Drive : Swing Circle
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***10 | Bolt (Op) | 40 |
| 01***30 | Bolt | 40 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Swing Circle And Final Drive : Swing Machinery (1/2)
| 22***00 | Swing Machinery, Assembly | 1 |
| 22***80 | Ring, Snap | 1 |
| 22***90 | Spacer | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Swing Circle And Final Drive : Swing Machinery (2/2)
| 22***10 | Shaft | 1 |
| 22***20 | Spacer | 1 |
| 22***30 | Ring | 1 |
Under Carriage
Komatsu : Pc110r-1(S/N 2265000001-Up) : Under Carriage : Carrier Roller
| 22***20 | Plug | 1 |
| 22***00 | Carrier Roller, Assembly | 2 |
| 22***10 | Roller | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Under Carriage : Front Idler
| 22***00 | Idler, Assembly | 2 |
| 22***10 | Support | 1 |
| 22***20 | Plug | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Under Carriage : Recoil Spring
| 22***10 | Piston | 1 |
| 22***20 | Bolt | 4 |
| 22***30 | Spring Washer | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Under Carriage : Sprocket
| 01***45 | Bolt,(For Travel Motor) (Not Show) | 24 |
| 01***60 | Screw | 40 |
| 21***30 | Washer | 64 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Under Carriage : Track Frame
| 01***20 | Bolt,(With Auto Emergency Steering) | 8 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 10 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 8 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Under Carriage : Track Roller
| 01***90 | Bolt | 48 |
| 21***40 | Spring Washer | 48 |
| 22***00 | Track Roller, Assembly | 12 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Under Carriage : Track Shoe (L=500 Mm)
| 22***00 | Track Shoe, Assembly | 2 |
| 22***10 | Shoe | 38 |
| 22***20 | Bolt | 152 |
Work Equipment
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : 1st Boom
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 1 |
| 21***20 | Bushing | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : 2nd Boom
| 01***30 | Bolt,(Not Used With Emergency Str.) | 1 |
| 01***10 | Bolt,(Noise Suppression Spec.) | 2 |
| 01***40 | Screw | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : 2nd Boom Cylinder, L.H.
| 01***25 | Screw | 8 |
| 21***10 | Screw | 6 |
| 21***80 | Nut | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : 2nd Boom Cylinder, R.H.
| 01***25 | Screw | 8 |
| 21***10 | Screw | 6 |
| 21***80 | Nut | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Arm Cylinder
| 01***25 | Screw | 8 |
| 01***25 | Bolt,See Fig. K4010-65a0 | 1 |
| 21***10 | Screw | 6 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Arm, L=1850 Mm
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 20***40 | Spacer? 1.0mm | 4 |
| 21***10 | Bushing | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Arm, L=2000 Mm
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 20***40 | Spacer? 1.0mm | 4 |
| 21***10 | Bushing | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Arm, L=2300 Mm
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 20***40 | Spacer? 1.0mm | 4 |
| 21***10 | Bushing | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Blade
| 01***50 | Bolt,(With Service Valve R.H.) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Blade Cylinder
| 01***30 | Screw | 8 |
| 21***10 | Screw | 12 |
| 21***10 | Bushing | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Boom
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 01***40 | Screw | 1 |
| 20***40 | Spacer? 1.0mm | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Boom Cylinder
| 01***25 | Screw | 8 |
| 21***10 | Screw | 12 |
| 21***70 | O-Ring | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Boom Swing Cylinder
| 01***25 | Screw | 8 |
| 21***10 | Screw | 12 |
| 21***40 | Bushing | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Bucket
| 22***10 | Bucket, L=300 mm | 1 |
| 22***20 | Bucket, L=400 mm | 1 |
| 22***30 | Bucket, L=500 mm | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Bucket Cylinder
| 01***25 | Screw | 8 |
| 21***10 | Screw | 12 |
| 21***40 | Bushing | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Bucket Link
| 20***40 | Spacer? 1.0mm | 10 |
| 21***20 | Bushing | 2 |
| 21***10 | Bushing | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Hydraulic Piping (Attachment Line)
| 21***10 | Union | 2 |
| 21***00 | Union | 1 |
| 21***80 | O-Ring | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Hydraulic Piping (Attachment Line) (Arm Side)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 21***60 | O-Ring | 7 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Hydraulic Piping (Attachment Line) (Boom Side)
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 01***45 | Bolt, Bracket Mounting | 1 |
| 21***90 | O-Ring | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Hydraulic Piping (Attachment Line) (For 2-Piece Boom) (Boom Side)
| 21***80 | O-Ring | 3 |
| 21***90 | O-Ring | 3 |
| 22***90 | Hose | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Hydraulic Piping (Blade Line) (Lower)
| 21***70 | O-Ring | 2 |
| 21***10 | O-Ring ` | 2 |
| 21***70 | O-Ring | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Hydraulic Piping Hammer
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***50 | Screw | 4 |
| 01***25 | Bolt, Seal Cover Mounting | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment : Swing Bracket
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 3 |
| 01***40 | Bolt,(With Center Guard) | 4 |
Work Equipment Control System
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Control Valve (1/7)
| 01***30 | Screw | 34 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 34 |
| 57***20 | O-Ring | 17 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Control Valve (2/7)
| 07***20 | O-Ring,Cover? Transfer Case | 8 |
| 07***10 | O-Ring,Plate | 7 |
| 07***12 | O-Ring, Divider Valve Mounting | 3 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Control Valve (3/7)
| 07***20 | O-Ring,Cover? Transfer Case | 1 |
| 07***10 | O-Ring,Plate | 1 |
| 07***34 | O-Ring,(For Front Attachment) | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Control Valve (4/7)
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 07***07 | O-Ring - (K10) | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Control Valve (5/7)
| 07***09 | O-Ring,(For Dual Tilt Dozer) | 1 |
| 07***16 | O-Ring,Suction And Relief Valve | 1 |
| 07***09 | Ring,Back-Up (Kit) | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Control Valve (6/7)
| 07***07 | O-Ring - (K10) | 2 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 1 |
| 07***34 | O-Ring,(For Without Brake Assistor) | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Control Valve (7/7)
| 01***30 | Screw | 4 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 4 |
| 07***20 | O-Ring,Cover? Transfer Case | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Control Valve (For 2-Piece Boom)
| 01***30 | Screw | 4 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 4 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Control Valve (Safety Valve)
| 72***00 | Safety Valve | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Final Drive
| 22***00 | Final Drive, Assembly | 2 |
| 22***10 | Screw | 10 |
| 22***20 | Cap Valve | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (2nd Boom Cylinder Line) : Unit_01_of_02
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 01***35 | Bolt, Mount Bracket To Floor | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (2nd Boom Cylinder Line) : Unit_02_of_02
| 01***35 | Bolt, Stopper | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (2nd Boom Cylinder Line) (Safety Valve)
| 01***30 | Bolt,(Water Separator Spec.) | 2 |
| 21***30 | Hose-Clamp | 2 |
| 21***70 | O-Ring | 5 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Arm Cylinder Line)
| 01***60 | Bolt,(For Japan And Sweden) | 3 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 4 |
| 01***35 | Bolt, Mount Bracket To Floor | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Arm Cylinder Line) (For 2-Piece Boom)
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 21***20 | O-Ring | 1 |
| 21***60 | O-Ring | 5 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Arm Cylinder Line) (Safety Valve)
| 01***80 | Bolt,(For Long Lever Control) | 4 |
| 01***30 | Screw | 8 |
| 21***60 | Hose-Clamp | 20 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Blade Line) (Upper)
| 21***70 | O-Ring | 2 |
| 21***30 | O-Ring | 1 |
| 21***70 | O-Ring | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Boom Cylinder Line)
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 4 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 8 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Boom Cylinder Line) (Safety Valve)
| 01***25 | Screw | 8 |
| 01***00 | Screw | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Boom Cylinder Line) (With 2-Piece Boom)
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 4 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 4 |
| 21***20 | O-Ring | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Boom Swing Line)
| 21***60 | Hose-Clamp | 1 |
| 21***70 | O-Ring | 1 |
| 21***30 | O-Ring | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Bucket Cylinder Line)
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 1 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 4 |
| 01***35 | Bolt, Mount Bracket To Floor | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Bucket Cylinder Line) (For 2-Piece Boom)
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 8 |
| 01***35 | Bolt, Mount Bracket To Floor | 4 |
| 21***60 | O-Ring | 5 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Bucket Cylinder Line) (Safety Valve)
| 21***60 | O-Ring | 2 |
| 21***70 | O-Ring | 1 |
| 21***70 | O-Ring | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Bucket Cylinder Line) (Safety Valve) (Rotating And C
| 21***60 | O-Ring | 2 |
| 21***70 | O-Ring | 1 |
| 21***70 | O-Ring | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Delivery Line)
| 01***45 | Screw | 4 |
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 3 |
| 01***35 | Screw | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Drain Line) (1/2)
| 21***30 | Union | 1 |
| 21***70 | Elbow | 1 |
| 21***30 | Union Tee | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Drain Line) (2/2)
| 20***11 | Union | 2 |
| 21***30 | Union | 1 |
| 21***30 | Union Tee | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Load Sensing)
| 21***10 | O-Ring | 4 |
| 21***60 | O-Ring | 2 |
| 21***20 | Protection | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Oil Cooler And Return Line)
| 21***60 | Union | 1 |
| 21***40 | Elbow | 1 |
| 21***30 | Elbow | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Overload Sensor Line)
| 01***40 | Screw | 2 |
| 21***00 | Elbow | 2 |
| 21***10 | Union Tee | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Ppc Valve Delivery Line)
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***20 | Screw | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Ppc Valve Return Line)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Suction Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 4 |
| 01***35 | Screw | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Swing Motor Line)
| 01***30 | Screw | 8 |
| 01***40 | Bolt,(Tm8072-123) | 12 |
| 21***90 | Union | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Travel Line) (1/2)
| 21***90 | Union | 1 |
| 21***40 | Elbow | 1 |
| 21***20 | O-Ring | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Piping (Travel Line) (2/2)
| 21***40 | Elbow | 1 |
| 21***60 | Union | 1 |
| 21***60 | O-Ring | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Pump (1/9)
| 04***18 | Bolt, Eye | 1 |
| 07***12 | Plug,Magnetic | 1 |
| 70***21 | Pump, Assembly | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Pump (2/9)
| 04***25 | Ring,(W/Emergency Steering) (1m?1d) | 1 |
| 70***60 | Snap Ring | 1 |
| 70***60 | Spacer | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Pump (3/9)
| (****1) | Seat | 1 |
| (****0) | Cylinder Block | 1 |
| (****0) | Piston Sub Ass'Y | 9 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Pump (4/9)
| (****0) | O-Ring | 1 |
| (****0) | O-Ring | 1 |
| (7***1) | Pump, Assembly | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Pump (5/9)
| 07***09 | O-Ring | 2 |
| 70***90 | Pc Valve, Assembly | 1 |
| 70***20 | O-Ring | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Pump (6/9)
| 70***20 | Valve Ass'Y,Ls | 1 |
| 70***10 | O-Ring | 1 |
| 70***80 | Gasket | 3 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Pump (7/9)
| 70***13 | Plug Sub Ass'Y | 1 |
| 70***10 | O-Ring | 1 |
| 70***80 | Gasket | 3 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Pump (8/9)
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 2 |
| 01***65 | Screw | 2 |
| 01***25 | Screw | 3 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Pump (9/9)
| 70***50 | Gear Pump, Assembly | 1 |
| (****2) | Plate,Side | 2 |
| (****1) | O-Ring | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Hydraulic Tank
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 8 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Ppc Valve (For Travel) (1/2)
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***45 | Screw | 4 |
| 01***16 | Screw (Without Radio) (1) | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Ppc Valve (For Travel) (2/2)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***55 | Screw | 2 |
| 01***12 | Screw | 2 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Ppc Valve (Work Equipment)
| 01***20 | Bolt,(Without Air Con. Or Heater) | 4 |
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
| 07***20 | O-Ring,(0202-007) | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Ppc Valve For Blade, Boom Swing, 2-Piece Boom
| 01***25 | Bolt, Seal Cover Mounting | 2 |
| 01***25 | Screw | 2 |
| 70***30 | Ppc Valve, Assembly | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Ppc Valve, L.H.
| 01***30 | Bolt,(With Body Positioner) | 1 |
| 01***08 | Nut (Op) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Ppc Valve, R.H.
| 01***30 | Bolt,(With Body Positioner) | 1 |
| 01***08 | Nut (Op) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Servocontrol Feed Unit
| 01***16 | Screw | 2 |
| 01***25 | Screw | 2 |
| 01***40 | Screw | 4 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Swivel Joint
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 21***30 | Spring Washer | 2 |
| 21***40 | Fitting | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Swivel Joint (Mounting Parts)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 3 |
| 01***40 | Bolt,(With Service Valve R.H.) | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 7 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Travel Motor (1/2)
| 22***10 | Base Plate, Assembly | 1 |
| 22***70 | Cylinder Block Kit | 1 |
| 22***80 | Kit, Swash Plate | 1 |
Komatsu : Pc110r-1(S/N 2265000001-Up) : Work Equipment Control System : Travel Motor (2/2)
| 22***20 | Braking Valve Kit | 1 |
| 22***30 | Plunger Kit | 1 |
| 22***40 | Orifice Kit | 1 |
PC110R-1(S/N 2265000001-Up) serial number reference
The PIN/serial plate on this crawler excavator is a riveted tag on the front of the upper frame, right-hand side facing the direction of travel, and the same number is also stamped directly into the frame between the two hydraulic arm/boom-foot mounts under a small KOMATSU-marked cover plate. Unlike Cat-style letter PIN prefixes, Komatsu reads this as one continuous number: the leading four digits (2265) identify the PC110R-1 crawler model/production block, and the remaining six digits are the sequential unit number within that block.
| Prefix | Identifies | Notes |
|---|---|---|
| 2265 | PC110R-1 crawler midi excavator, swing-offset-boom configuration (designed to dig close to walls and obstructions) | Factory serial numbers for this crawler model run in the 2265-prefixed block, with this parts-book edition starting at 2265000001-Up. Later editions within the same 2265 block start at 2265000306-Up, 2265010001-Up, and 2265010170-Up; these mark running/engineering-change breakpoints in ongoing production, not a different machine or configuration. Engine fitted is the Komatsu S4D106-1FB diesel (a Komatsu-designated, Yanmar 4TNV106-based direct-injection block), turbocharged, rated around 71.8 kW (96-97 hp) at 2,000 rpm - the S-prefix on this engine code denotes the turbocharged family. General production window cited for the PC110R-1 line is roughly 1999-2012; exact start/end tied to this specific 2265000001-Up block is not independently confirmed - confirm with dealer. The wheeled sister model (PW110R-1) uses a separate serial block starting with 2260, not part of this crawler family. |
Frequently asked questions
What engine does the Komatsu PC110R-1 use?
The PC110R-1 (S/N 2265000001-Up) runs a turbocharged Komatsu S4D106-1FB four-cylinder diesel rated at about 71.8 kW (96.3 hp) gross and 69.3 kW (92.9 hp) net at 2,000 rpm, displacing 4.412 L, and meeting EU Stage II emissions with no exhaust aftertreatment.
What is the operating weight of the Komatsu PC110R-1?
Operating weight ranges from about 10,560 kg (23,280 lb) on the base 500 mm-shoe monoboom configuration up to about 11,220 kg (24,740 lb) on the 600 mm-shoe, two-piece offset-boom configuration. Exact figure varies by shoe width, boom type, and attachments fitted.
What replaced the Komatsu PC110R-1?
Komatsu never issued a direct PC110R-2 successor. Once the line left the European catalog, Komatsu's own product materials pointed buyers to the reduced-tail-swing PC88MR-11 as the nearest continuing model, though that machine sits in a lighter weight class; for the same 10-11 tonne bracket, later short-radius Komatsu excavators cover the same close-quarters niche.
What PC110R-1(S/N 2265000001-Up) owners discuss
What's the most talked-about structural problem on this machine?
A crack where the main frame narrows below the cab and fuel tank to meet the boom foot pivot, sometimes called the frame's "Y" section. Owners describe it showing up on machines worked hard, especially with sustained digging loads through the boom foot. The usual fix is a reinforcing plate welded in, but technique matters: run the weld lengthwise rather than straight across the joint, leave the plate ends open or curved rather than fully sealed, and use proper preheat so the heat-affected zone doesn't set up a new crack next to the old one. A rushed patch without preheat or the right filler tends to crack again in the same spot. Have your dealer or a certified structural welder inspect and sign off on any frame crack repair before the machine goes back to work.
How does the reduced-swing-radius body hold up in daily use, and what's the tradeoff?
The compact counterweight and tail overhang that let this configuration work close to walls, fences, and curbs also mean less room around the boom foot and center section. That tighter package is why the frame joint noted above takes concentrated stress and why owners are told to have it checked at every undercarriage service, not just when a crack is visible. Otherwise the swing-offset upper works as expected for utility and residential-grade digging where a standard-swing machine can't get close enough to the obstacle.
What hydraulic behaviors show up as these machines age?
Weak or one-sided travel with normal digging function usually traces back to the center swivel joint (rotary manifold) seals leaking internally and bypassing oil instead of driving the travel motors. Sluggish or weak swing with everything else working normally often comes down to dirt plugging the small damping orifice in the swing counterbalance or safety valve, or a stuck/broken shuttle valve in that same valve body. Neither is unique to this model - it's typical wear on a machine of this age and hour range - but it's the first place to look before assuming a pump or motor is bad.
What wear pattern should I expect on the undercarriage and boom linkage?
Undercarriage is the first thing to show hours on a midi machine run near its digging capacity: track rollers, carrier rollers, idlers, and sprockets wear steadily and final drive travel motors can start weeping seals with age. On the swing-offset boom, the offset cylinder and its pivot pins are a wear point that needs regular greasing; skipped intervals show up as play or slop in the offset joint before anything else on the machine. Track shoe width on this model runs around 500 mm (about 19.7 in) as commonly specced, so measure actual shoe and pin wear against that baseline rather than assuming a single width across every unit.
Are there known quirks with this engine across the production run?
This machine carries a Komatsu S4D106 family turbocharged 4-cylinder diesel rated about 70-72 kW (95-96 hp) gross. It's mechanically governed with no aftertreatment, so none of the DPF/regen headaches that show up on later Tier 4 machines apply here. Because production for this model ran over a decade, the exact engine revision can vary by serial range - confirm the engine tag on the specific unit before ordering injection or turbo parts rather than assuming by model year alone. Typical age-related complaints on this engine are turbo shaft-seal weep and injector wear, both normal wear items rather than a design flaw.
What electrical or sensor issues come up on machines this age?
Because this generation is mechanically governed rather than electronically injected, electrical gremlins tend to be basic sender and starting-circuit faults rather than ECM trouble codes: corroded wiring harness connectors, a weak battery or bad ground causing intermittent starting, and flaky gauge readings from a failing coolant temperature or fuel level sender. Clean and re-seat connectors and check grounds before chasing a sensor as the root cause. Komatsu's KOMTRAX telematics became standard equipment partway through this model's production run - pull a report if the specific unit has it, but don't assume an early-serial machine is equipped.
What should I check before buying a used PC110R-1 in this serial range?
Inspect the frame joint below the cab and fuel tank where it meets the boom foot for cracks or prior repair welds - this is the known weak point on this platform and should be checked with the machine on level ground and the boom cycled through full range. Check the center swivel joint and offset boom cylinder for leaks, and cycle the offset function fully to feel for play in the pivot pins. Walk the undercarriage for even wear across rollers, idlers, and sprockets, and confirm track shoe width and remaining pad life. Start the engine cold and watch for excess smoke, listen for turbo whine or rattle, and check oil for contamination. Ask for service records and, if the unit has KOMTRAX, pull the report to cross-check reported hours and fault history. Confirm the engine tag matches the parts and service literature for that specific serial before budgeting for major repairs. Have a qualified technician verify the frame and any structural welds before you finalize the purchase.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Serial-range & configuration variants
This page covers the Komatsu PC110R-1(S/N 2265000001-Up). Related factory variants of the same model family:
PC110R-1(S/N 2265000306-Up)PC110R-1(S/N 2265010001-Up)
Need a specific PC110R-1(S/N 2265000001-Up) part?
Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.