Komatsuhydraulic shovels(no series)
Komatsu H255S-1(S/N G06171)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu H255S-1 (S/N G06171) is a large hydraulic mining face shovel in the roughly 240-tonne operating class, built on Demag hydraulic-shovel engineering. It runs a Cummins K1500E, a V12 turbocharged diesel on the K38 platform, rated around 900 kW (1,207 hp) at 1,800 rpm - exact rating varies by configuration. Operating weight sits at approximately 240,000 kg (about 529,000 lb) depending on front attachment and counterweight setup, with a bucket in the roughly 14 m3 (18 yd3) class. The model dates to the Demag/Mannesmann-Komatsu hydraulic-shovel joint venture formed in 1996 and continued after Komatsu's full acquisition of the operation in 1999. It follows earlier Demag H-series shovels developed from the 1970s onward and is offered as a dedicated shovel (face-loading) front, with standard and reinforced dipper options for different dig conditions.
Across this era, Komatsu progressively folded the Demag-heritage H-series letter-and-number badges into its own PC-series naming - PC3000, PC4000, PC5500, and later PC8000 - as the German-engineered chassis picked up Komatsu's electronics and support network. This serial range documents under both the H255S-1 and PC3000-1 designations, placing it right at that badge transition; the core structure, undercarriage, and hydraulic architecture carried over largely unchanged, with running changes concentrated in engine emissions tier and monitoring electronics layered onto the same K38 engine platform. In the used and parts market, this matters because these shovels routinely run tens of thousands of hours across multiple rebuild cycles, and structural and hydraulic components interchange broadly across the H255S/PC3000-era serial range - though engine and control-system parts should always be checked against the specific serial's build spec before ordering.
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 H255S-1(S/N G06171) specifications
Engine
| Model | Cummins K1500E (K38 platform), V12 diesel, turbocharged |
| Power (as installed) | approx. 900 kW (1207 hp) net at 1800 rpm per equipment spec databases |
| Power (engine family range) | K38/K1500E family spans roughly 690 to 1082 kW (925 to 1450 hp) across mining/genset ratings; exact installed rating varies by configuration |
| Displacement | 38 L (2288 cu in) |
| Cylinders | 12, V-configuration |
| Emissions tier | Not published for this mining-shovel application - verify with dealer |
Weights
| Operating weight | approx. 240,000 kg (529,100 lb / approx. 240 t) in standard front-shovel configuration |
| Shipping weight | Not published for this model - large mining shovels of this class ship disassembled in sections; verify with dealer |
| Ground pressure | approx. 221 kPa (32 psi) |
Dimensions
| Transport length (shovel front) | approx. 13.35 m (43 ft 10 in) |
| Width across tracks | approx. 5.60 m (18 ft 5 in) |
| Overall height (upper structure/cab) | approx. 7.93 m (26 ft) |
| Track length on ground | approx. 6.00 m (19 ft 8 in) |
| Track gauge | approx. 4.80 m (15 ft 9 in) |
| Tail swing radius | approx. 6.48 m (21 ft 3 in) |
| Ground clearance | approx. 0.89 m (35.2 in) |
| Track shoe width | 800 mm (31.5 in) standard |
Performance
| Max digging depth | approx. 3.7 m (12 ft 2 in) |
| Max cutting height | approx. 14.5 m (47 ft 7 in) |
| Max dumping height | approx. 9.4 m (30 ft 10 in) |
| Max dig/dump reach | approx. 13.4 m (44 ft) |
| Travel speed | approx. 2.4 km/h (1.5 mph) |
| Swing speed | approx. 4.6 rpm |
| Bucket capacity (heaped, standard front shovel) | approx. 14.1 m3 (18.4 yd3); varies by bucket and configuration |
Service capacities (summary)
| Fuel tank | approx. 3,700 L (977 gal) |
| Hydraulic system | approx. 2,900 L (766 gal) |
| Engine oil | Not published in reviewed sources - refer to Cummins K38/K1500E service literature |
| Cooling system | Not published in reviewed sources - refer to the OEM shop manual for this range |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
H255S-1(S/N G06171) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (incl. filter) | approx. 135 L (35.7 US gal) | API CI-4/CH-4 diesel engine oil for the Cummins K1500E V12; 15W-40 for normal ambient range, drop to 10W-30 in sustained sub-zero cold-start conditions per standard mining-shovel practice |
| Cooling system | approx. 118 L (31.2 US gal) | heavy-duty extended-life ethylene-glycol antifreeze/coolant, 50/50 mix for standard climates, richer glycol ratio for extreme cold |
| Fuel tank | 3,700-4,500 L (977-1,189 US gal) - figure varies by source/configuration, verify against the machine dataplate | ultra-low-sulfur diesel fuel meeting Cummins mining-engine fuel spec |
| Hydraulic system and tank | 2,900-4,400 L (766-1,162 US gal) - figure varies by source/configuration, verify against the machine dataplate | anti-wear mining-grade hydraulic oil, ISO VG 46 for normal ambient, ISO VG 68 for hot climates/high-load duty, lower-viscosity arctic-grade hydraulic oil for sustained cold |
| Final drives (each, left and right) | not documented for this exact serial range - verify with your dealer | EP gear oil, GL-5, viscosity selected by ambient temperature per standard final-drive practice |
| Swing drive gearbox | not documented for this exact serial range - verify with your dealer | EP gear oil, GL-5 |
| Grease (all pins, bushings, slew ring) | spec only - no fill volume applicable | lithium-complex EP2 multipurpose grease; low-temperature EP grease for cold climates |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu H255S-1(S/N G06171) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the H255S-1(S/N G06171) beyond the schedule
Predictive Maintenance & Fluid Analysis
Run engine, hydraulic, and final-drive oil through scheduled sampling tied to the 250h and 1000h service points. The K1500E's PT-mechanical fuel system and V12 bearing sets show wear-metal trends well before a hard failure develops. Watch hydraulic oil cleanliness closely - this shovel's large-volume tank can mask contamination for a long stretch between changes. Pair oil-trend data with pump and motor teardown findings to set a realistic overhaul window for this serial's actual duty cycle.
Corrective & Common Repairs
Hydraulic hose failures and cylinder rod-seal leaks are the most common complaints, driven by constant boom and stick cycling under load. Swing gear backlash and travel motor case-drain flow show up next on higher-hour units. On the K38-platform engine, injector and PT pump adjustment drift surfaces as rough idle or power loss before a full teardown is warranted. Undercarriage pin and bushing play, checked with a pry bar, remains the most frequent structural repair driver on this class of shovel.
Overhaul & Rebuild Points
Main hydraulic pumps, swing motors, and travel motors are the primary exchange components on this shovel class, typically pulled on condition rather than a fixed hour trigger. Boom and stick cylinders need reseal and bore inspection once rod weeping or drift appears. Undercarriage rebuild - pins, bushings, and track shoes - tracks on its own wear curve separate from the hydraulic system and is usually the single largest overhaul cost on a high-hour H255S-1/PC3000-1 unit.
Seasonal & Environment Servicing
In cold climates, use block heating and verify coolant concentration before start-up to protect the K1500E V12, and confirm winter-blended fuel to avoid gelling in the PT fuel system. In hot, dusty pit sites, clean radiator and hydraulic oil cooler cores more often than the standard interval and shorten air filter inspection cycles. Wet-season operations need more frequent undercarriage cleanout and pin/bushing lubrication checks to keep abrasive slurry out of wear points.
H255S-1(S/N G06171) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 693 587 | Fuel Filter Cartridge With Separator | Fuel system service | Check fitment → |
| 694 402 | Element, Generator Set Air Conditioning Equipment Pilot Oil Pump | Air intake service | Check fitment → |
| 768 440 73 | Lube Oil Filter (Diesel Engine) | Lubrication service | Check fitment → |
| 899 366 40 | Harness - Oil Filter | Lubrication service | Check fitment → |
| 694 400 | Element, Return Oil Filter - Oil Tank | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
H255S-1(S/N G06171) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| 111 | ECM critical internal failure | Internal control-module fault (memory or processor error) inside the engine electronic control on the Cummins K1500E (K38-platform) engine | Cycle key off/on; if code returns, connect a Cummins reader at the engine ECM and plan for control-module replacement |
| 122 | Boost (intake manifold) pressure sensor circuit reading above normal / shorted high | Damaged sensor wiring, corroded connector, or failed boost-pressure sensor on the turbocharged V12 | Inspect sensor harness and connector for damage or corrosion; test sensor signal against spec and replace if out of range |
| 143 | Engine oil pressure low (moderate severity) | Low oil level, dirty filter, worn oil pump, or degraded oil viscosity from heat/contamination | Stop and check oil level and filter condition first; verify sender/sensor wiring before condemning the oil pump |
| 415 | Engine oil pressure critical low | Same root causes as the moderate low-pressure warning but at a level that risks bearing/engine damage; may follow an unaddressed 143 event | Shut engine down immediately, do not restart until oil level, filter, and pressure sender are checked and pressure is confirmed at spec |
| 234 | Engine overspeed | Governor/fuel-control malfunction, sudden loss of load, or a faulty speed/timing sensor sending an erratic signal | Reduce throttle and inspect governor and speed-sensor wiring; check for mechanical binding in the linkage before returning to service |
| 441 | System/battery voltage low | Weak or failing battery, loose or corroded charging-circuit connections, or alternator output below spec | Load-test the battery, check charging-circuit connections for corrosion, and verify alternator output |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
H255S-1(S/N G06171) attachments & work tools
Face-shovel bucket (dipper)
Standard front on this class of Demag-heritage mining shovel is a shovel-front crowd bucket, typically around 14-18 m3 (18-24 yd3) for this size range, though exact capacity for this specific serial is not documented and varies by wear-package selection. Bucket is pinned directly to the stick/crowd arm; there is no quick-coupler on a shovel this size.
Backhoe (dipper-stick) front option
Machines in this Demag/Komatsu large-shovel range are commonly offered from the factory as either a shovel front or a backhoe front, with the backhoe bucket usually sized somewhat larger than the shovel bucket on the same base machine. No source ties this specific serial to a backhoe conversion, so treat backhoe availability as a class-level option to verify with your dealer.
Ground engaging tools (GET)
Bucket lip is fitted with bolt-on or weld-on tooth/adapter systems in standard, long-reach, tiger, and rock-chisel profiles sized for this shovel class, plus matching cutting edges and side-cutter/lip-shroud protection. Tip and edge hardness is graded for high-abrasion rock and ore work rather than light digging.
Wear-protection packages
Bucket and front-end wear parts are offered in graduated protection tiers (standard, heavy-duty, and extreme) selected to match ore/rock abrasiveness and density at the mine site. Liners, lip shrouds, and side guards are the main upgrade path rather than a different bucket body.
Mounting and coupling system
Front tool attaches by pin-on connection at the stick/arm and bucket linkage; mining shovels in this weight class do not use a hydraulic quick-coupler. Changing buckets or converting front configuration is a shop-level pin-and-linkage job, not a field quick-swap.
Secondary/auxiliary tools
No factory hydraulic-breaker, thumb, or grapple kit is documented for this shovel class; these machines are built and equipped as dedicated single-purpose loading tools. Any auxiliary hydraulic circuit for a secondary tool would be a special-order arrangement, not a standard catalog option.
All H255S-1(S/N G06171) assemblies by section
Every catalogued assembly group for the Komatsu H255S-1(S/N G06171). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
* = Variations From Page:
Komatsu : H255s-1(S/N G06171) : * = Variations From Page : : Accumulator
| 00***98 | Test Socket | 2 |
| 15***40 | Test - Screw Coupling | 4 |
| 25***40 | Suction Line Dn 60 Bulk Ware, State Length Required | 2 |
Komatsu : H255s-1(S/N G06171) : * = Variations From Page : : Backhoe Tooth
| 65***40 | Shroud | 2 |
| 65***40 | Shroud | 2 |
| 66***40 | Tooth Adapter | 3 |
Komatsu : H255s-1(S/N G06171) : * = Variations From Page : : Diaphragm-Type Accumulator
| 00***98 | Test Socket | 2 |
| 15***40 | Test - Screw Coupling | 4 |
| 25***40 | Suction Line Dn 60 Bulk Ware, State Length Required | 2 |
Komatsu : H255s-1(S/N G06171) : * = Variations From Page : : Grease
| 27***40 | Grease T3 Hs -40/-10? C / 50 Kg | 1 |
| 32***40 | Grease T2 Hs -20/+10? C /50 Kg | 1 |
| 50***98 | Adhesive Lubrication Spray | 1 |
Air Conditioning System, Heater
Komatsu : H255s-1(S/N G06171) : Air Conditioning System, Heater : -Air Conditioning Unit
| 63***40 | Air Conditioning Unit Assembly. Fig-Nos. 02-49 | 1 |
| 69***73 | Housing | 2 |
| 69***73 | D.C.-Motor 24 | 3 |
Komatsu : H255s-1(S/N G06171) : Air Conditioning System, Heater : -Compressor
| 65***40 | Compressor | 1 |
| 76***73 | Feather Key | 1 |
| 76***73 | Valve Plate With Seal | 1 |
Komatsu : H255s-1(S/N G06171) : Air Conditioning System, Heater : -Heater
| 46***40 | Heat Exchanger | 1 |
| 51***40 | Heater Consist. Of Fig-Nos: 02-08 | 1 |
| 69***73 | Tab 4-Pole | 1 |
Komatsu : H255s-1(S/N G06171) : Air Conditioning System, Heater : Air Conditioning System Arr.
| 00***98 | Hose Clip | 1 |
| 16***40 | Profiled Joint Ca. 6000 Lg. Bulk Ware, State Length Required | 0 |
| 30***99 | Screw | 10 |
Komatsu : H255s-1(S/N G06171) : Air Conditioning System, Heater : Cab Heater Arr.
| 25***40 | Hose Fittings 90? | 1 |
| 25***40 | Moulding Material Bulk Ware, State Length Required | 0 |
| 26***40 | Hose Coupling, Heater | 2 |
Komatsu : H255s-1(S/N G06171) : Air Conditioning System, Heater : Compr. Drive, Air Conditioning
| 03***99 | V-Belt - Set | 1 |
| 25***40 | Solenoid Clutch | 1 |
| 30***99 | Screw | 4 |
Annex
Komatsu : H255s-1(S/N G06171) : Annex : Backhoe Equipment
Komatsu : H255s-1(S/N G06171) : Annex : Colour Basic Machine :
Komatsu : H255s-1(S/N G06171) : Annex : Display Schematic :
Komatsu : H255s-1(S/N G06171) : Annex : Electric Schematics :
Komatsu : H255s-1(S/N G06171) : Annex : Hydraulic Schematics :
Komatsu : H255s-1(S/N G06171) : Annex : Tools And Accessories
Backhoe Equipment
Komatsu : H255s-1(S/N G06171) : Backhoe Equipment
Komatsu : H255s-1(S/N G06171) : Backhoe Equipment : Backhoe 14 Cbm
| 65***40 | Shroud | 2 |
| 65***40 | Shroud | 2 |
| 66***40 | Tooth Adapter | 3 |
Komatsu : H255s-1(S/N G06171) : Backhoe Equipment : Backhoe Boom 8,15 M
| 17***40 | Union | 1 |
| 30***99 | Bolt | 1 |
| 30***99 | Bolt Pin Lock From S/No: 06 120 | 16 |
Komatsu : H255s-1(S/N G06171) : Backhoe Equipment : Backhoe Cylinder
| 00***98 | Grease Nipple | 3 |
| 25***40 | Piston Guide Ring | 5 |
| 25***40 | O-Ring | 1 |
Komatsu : H255s-1(S/N G06171) : Backhoe Equipment : Backhoe Stick 4,25 M
| 30***99 | Bolt | 6 |
| 30***99 | Bolt Pin Lock From S/No: 06 120 | 20 |
| 34***99 | Washer Pin Lock From S/No: 06 120 | 20 |
Komatsu : H255s-1(S/N G06171) : Backhoe Equipment : Boom Cylinder
| 00***98 | Grease Nipple | 3 |
| 25***40 | Piston Guide Ring | 5 |
| 25***40 | O-Ring | 1 |
Komatsu : H255s-1(S/N G06171) : Backhoe Equipment : Pipes Backhoe Cylinder
| 00***98 | Seal Ring | 1 |
| 30***99 | Bolt | 8 |
| 31***99 | Bolt | 4 |
Komatsu : H255s-1(S/N G06171) : Backhoe Equipment : Pipes Boom Cylinder
| 30***99 | Screw | 8 |
| 31***99 | Bolt (Standard) | 8 |
| 33***99 | Nut | 8 |
Komatsu : H255s-1(S/N G06171) : Backhoe Equipment : Pipes Stick Cylinder
| 00***98 | Flange Seal | 1 |
| 30***99 | Bolt (Standard) | 4 |
| 30***99 | Bolt To Fig-Nos. 03, 04 + 05 | 4 |
Komatsu : H255s-1(S/N G06171) : Backhoe Equipment : Stick Cylinder
| 00***98 | Grease Nipple | 3 |
| 25***40 | Sealing Element | 1 |
| 27***40 | Support Ring | 2 |
Komatsu : H255s-1(S/N G06171) : Backhoe Equipment : Wishbone And Rod
| 00***98 | Grease Nipple | 5 |
| 21***40 | Bolt Lock | 6 |
| 33***99 | Pin, Up To 06 119 | 2 |
Drive
Komatsu : H255s-1(S/N G06171) : Drive
Komatsu : H255s-1(S/N G06171) : Drive : --Cold Start System
| 30***99 | Screw | 4 |
| 69***03 | Valve | 1 |
| 69***04 | Union | 1 |
Komatsu : H255s-1(S/N G06171) : Drive : -Air Cleaner
| 30***99 | Bolt | 20 |
| 30***99 | Lock Washer | 22 |
| 33***99 | Nut | 22 |
Komatsu : H255s-1(S/N G06171) : Drive : -Coupling
| 30***99 | Bolt | 10 |
| 30***99 | Screw | 26 |
| 34***99 | Dowel Sleeve | 24 |
Komatsu : H255s-1(S/N G06171) : Drive : -Diesel Engine
| 51***40 | Generator 24 V / 100 A | 1 |
| 65***40 | Diesel Engine Assembly | 1 |
| 65***40 | Hose Assembly. Dn 08 X 1550 | 1 |
Komatsu : H255s-1(S/N G06171) : Drive : -Main Pump
| 17***40 | Screw Plug | 2 |
| 17***40 | Union | 3 |
| 18***40 | O-Ring | 2 |
Komatsu : H255s-1(S/N G06171) : Drive : -Mounting
| 26***40 | Rail (Cold Weather Design) | 2 |
| 30***99 | Bolt | 4 |
| 30***99 | Bolt | 4 |
Komatsu : H255s-1(S/N G06171) : Drive : -Pump (Fan)
| 17***40 | Plug | 2 |
| 20***40 | Screw Plug | 2 |
| 27***40 | Plug | 2 |
Komatsu : H255s-1(S/N G06171) : Drive : -Pump Distributor Gear
| 00***98 | O-Ring | 2 |
| 08***54 | O-Ring | 2 |
| 08***21 | O-Ring | 2 |
Komatsu : H255s-1(S/N G06171) : Drive : -Radiator
| 00***98 | Screw | 6 |
| 34***99 | Washer | 6 |
| 34***99 | Lock Washer | 12 |
Komatsu : H255s-1(S/N G06171) : Drive : Air Intake Lines
| 22***40 | Suction Hose | 4 |
| 30***99 | Screw | 1 |
| 50***98 | Nut | 1 |
Komatsu : H255s-1(S/N G06171) : Drive : Alternator Mounting
| 00***98 | Bolt | 1 |
| 50***98 | Bolt | 1 |
| 50***40 | Bushing | 1 |
Komatsu : H255s-1(S/N G06171) : Drive : Coolant Water Lines
| 25***40 | Radiator Hose Dn 55x300 Lg. Bulk Ware, State Length Required | 0 |
| 30***99 | Bolt 25 mm Lg | 8 |
| 30***99 | Bolt | 2 |
Komatsu : H255s-1(S/N G06171) : Drive : Cooling Distrib. Gear (Pump)
| 37***99 | Union | 1 |
| 37***99 | Socket With O-Ring | 1 |
| 37***99 | Hose Fittings | 1 |
Komatsu : H255s-1(S/N G06171) : Drive : Cooling Distributor Gear (Oilcooler 55?)
| 00***98 | Union | 8 |
| 37***99 | Union | 4 |
| 37***99 | Union | 1 |
Komatsu : H255s-1(S/N G06171) : Drive : Drive Assembly
| 08***40 | Quick Disconnect Coupling | 1 |
| 08***40 | Protection Cap | 1 |
| 31***99 | Washer | 12 |
Komatsu : H255s-1(S/N G06171) : Drive : Drive Assembly, Mounting
| 30***99 | Bolt (Standard) | 4 |
| 30***99 | Bolt (Standard) | 6 |
| 30***99 | Bolt | 2 |
Komatsu : H255s-1(S/N G06171) : Drive : Engine : Cummins-Diesel
Komatsu : H255s-1(S/N G06171) : Drive : Exhaust System
| 23***40 | Half Clamp | 4 |
| 23***40 | Half Clamp | 4 |
| 28***40 | Holding Strap | 4 |
Komatsu : H255s-1(S/N G06171) : Drive : Fan Cage
| 00***98 | Bolt | 1 |
| 30***99 | Lock Washer | 2 |
| 30***99 | Bolt | 1 |
Komatsu : H255s-1(S/N G06171) : Drive : Fan Drive
Komatsu : H255s-1(S/N G06171) : Drive : Fuel Lines
| 00***98 | Union | 1 |
| 30***99 | Screw | 6 |
| 31***99 | Screw | 12 |
Komatsu : H255s-1(S/N G06171) : Drive : Fuel Tank
| 08***40 | Quick Disconnect Coupling | 1 |
| 08***40 | Protection Cap | 1 |
| 17***40 | Screw Plug | 1 |
Komatsu : H255s-1(S/N G06171) : Drive : Installation - Air Cleaner
| 33***99 | Nut Standard | 12 |
| 37***99 | Twin Nipple | 2 |
| 50***98 | Bolt | 12 |
Komatsu : H255s-1(S/N G06171) : Drive : Output :
Komatsu : H255s-1(S/N G06171) : Drive : Pump Mounting
| 30***99 | Bolt | 2 |
| 30***99 | Bolt | 4 |
| 30***99 | Bolt | 24 |
Komatsu : H255s-1(S/N G06171) : Drive : Radiator Arr.
| 16***40 | Profiled Joint Ca. 6000 Lg. Bulk Ware, State Length Required | 0 |
| 30***99 | Bolt | 40 |
| 30***99 | Screw | 38 |
Komatsu : H255s-1(S/N G06171) : Drive : Serial-No. :
Komatsu : H255s-1(S/N G06171) : Drive : Series :
Komatsu : H255s-1(S/N G06171) : Drive : Type :
Electric
Komatsu : H255s-1(S/N G06171) : Electric
Komatsu : H255s-1(S/N G06171) : Electric : Batteries With Cables
| 00***79 | Plug | 1 |
| 00***79 | Plug | 1 |
| 00***79 | Rear Holder 2-Poles | 2 |
Komatsu : H255s-1(S/N G06171) : Electric : Cables Control And Filterplate
Komatsu : H255s-1(S/N G06171) : Electric : Cables Engine, Cu, Ktta
| 00***98 | Clamp 15/15 | 0 |
| 00***79 | Plug | 1 |
| 00***79 | Plug | 1 |
Komatsu : H255s-1(S/N G06171) : Electric : Cables Oil Tank And Switch
| 00***98 | Clamp 15/15 | 0 |
| 00***79 | Plug | 1 |
| 00***79 | Plug | 1 |
Komatsu : H255s-1(S/N G06171) : Electric : Electric Equipment
| 00***79 | Clip | 0 |
| 00***79 | Plug | 2 |
| 00***79 | Plug | 2 |
Komatsu : H255s-1(S/N G06171) : Electric : Electric, Cab Support
| 00***98 | Clamp 15/15 | 10 |
| 00***79 | Plug | 1 |
| 00***79 | Plug | 1 |
Komatsu : H255s-1(S/N G06171) : Electric : Horn, Illumination
| 25***40 | Compressor-Single Ton-Horn Consist. Of Fig.-No: 03-05 | 1 |
| 27***40 | Compressor-Two Ton-Horn Consist. Of Fig.-No: 05-08 | 1 |
| 30***99 | Bolt 20 mm Lg | 4 |
Komatsu : H255s-1(S/N G06171) : Electric : Main Switch Box X2
| 05***40 | Socket 2-Polig | 1 |
| 26***40 | Pulsing Relay (Movement Signal) | 1 |
| 27***40 | Cable Channel Ca. 1400 Lg. Bulk Ware, State Length Required | 2 |
Komatsu : H255s-1(S/N G06171) : Electric : Standard Lighting Equipment
| 00***98 | Clamp 15/15 | 0 |
| 05***40 | Plug To Fig-No: 17 | 8 |
| 05***40 | Socket 2-Polig | 8 |
Fire Extinguishing Equipment
Komatsu : H255s-1(S/N G06171) : Fire Extinguishing Equipment : Fuel Lock-Up Valve
| 30***99 | Bolt | 2 |
| 32***40 | Socket (11-Pol.) | 1 |
| 32***40 | Spring Retainer | 1 |
General View
Komatsu : H255s-1(S/N G06171) : General View
Komatsu : H255s-1(S/N G06171) : General View : General View Equipment Backhoe Equipment
Komatsu : H255s-1(S/N G06171) : General View : General View Shovel Backhoe Equipment
Komatsu : H255s-1(S/N G06171) : General View : General View Superstructure
Komatsu : H255s-1(S/N G06171) : General View : General View Undercarriage
Komatsu : H255s-1(S/N G06171) : General View : Machine-Maintenance Parts
| 26***40 | Drive Belt, Fan - Radiator | 1 |
| 50***98 | Adhesive Lubrication Spray | 0 |
| 69***87 | Fuel Filter Cartridge With Separator | 2 |
Hydraulic
Komatsu : H255s-1(S/N G06171) : Hydraulic : --Pressure Relief Valve
| 10***65 | O-Ring | 1 |
| 32***40 | Pressure Relief Valve, Assembly. Without Pressure Adjustment | 1 |
| 50***98 | O-Ring | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : -Aeration Filter
| 33***99 | Nut | 1 |
| 44***40 | Aeration Filter, Assembly | 1 |
| 69***89 | Socket Housing | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : -Anti Cavitation Valve
| 00***98 | O-Ring | 1 |
| 13***40 | O-Ring | 1 |
| 46***40 | Anticavitation Valve Assembly | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : -Anticavitation Valve
| 25***40 | Anticavitation Valve Assembly. Ng 20 | 1 |
| 36***99 | O-Ring | 2 |
| 50***98 | O-Ring | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : -Control Block
| 25***40 | Valve Disk | 4 |
| 25***40 | Compression Spring | 4 |
| 28***40 | O-Ring | 4 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : -Fan Motor
| 31***99 | Screw | 2 |
| 31***99 | Screw | 4 |
| 34***99 | Shim Washer 85x105x0,3 | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : -Filter
| 59***40 | Hydraulic. Filter, Assembly | 1 |
| 60***40 | Plug | 1 |
| 60***40 | Seal | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : -H.P. Filter
| 59***40 | Hydraulic. Filter Assembly | 1 |
| 60***40 | Plug | 1 |
| 60***40 | Seal | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : -Hp-Filter
| 31***99 | Screw | 4 |
| 34***99 | Lock Washer | 4 |
| 50***98 | O-Ring | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : -Non-Return Valve
| 00***98 | O-Ring | 2 |
| 25***40 | Valve Disk | 1 |
| 25***40 | Compression Spring | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : -Pressure Relief Valve
| 10***65 | O-Ring | 1 |
| 32***40 | Pressure Relief Valve, Assembly. Without Pressure Adjustment | 1 |
| 50***98 | O-Ring | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : -Pressure Valve
| 00***98 | O-Ring | 2 |
| 32***40 | Valve, Pre-Controlled Assembly. 125 Bar | 0 |
| 35***40 | Pressure Valve For Bullclam Bucket Equipment | 0 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : -Return Oil Filter
| 10***65 | O-Ring | 1 |
| 33***99 | Nut | 2 |
| 33***99 | Nut | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : -Throttle Check Valve
| 18***40 | O-Ring | 1 |
| 31***99 | Bolt | 4 |
| 33***99 | Nut | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : -Valve
| 08***40 | Pressure Relief Valve (10 Bar) | 1 |
| 76***73 | Spring | 1 |
| 99***83 | Gasket Kit Fig.-Nos : 02,04 And 06 | 0 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : -Valve Block
| 15***40 | Test - Screw Coupling | 1 |
| 25***40 | Screw Plug | 2 |
| 31***99 | Plug | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Control Lines - Control Block Control And Filterplate (Be)
| 00***98 | Union | 19 |
| 37***99 | Socket With O-Ring | 3 |
| 51***98 | Hose Assembly. Dn 12x12500 | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Control Lines Pilot Control Plate To Pilot Oil Units (Be)
| 00***98 | Union | 2 |
| 30***99 | Bolt | 4 |
| 37***99 | Union | 4 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Control Slew Gear
| 15***40 | Test - Screw Coupling | 2 |
| 37***99 | Socket | 1 |
| 37***99 | Union | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Control- And Filterplate
| 18***40 | Connection Plate | 4 |
| 30***99 | Bolt | 4 |
| 30***99 | Screw To Valve Y11d+Y120 | 2 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Control- And Filterplate Piping
| 00***98 | Test Socket | 3 |
| 00***98 | Test Socket | 1 |
| 00***98 | Union | 4 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Hose Lines Manifold-Boom
| 31***99 | Socket Head Cap Screw | 88 |
| 31***99 | Screw | 24 |
| 33***99 | Nut | 12 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Lines Oil Cooler 55?
Komatsu : H255s-1(S/N G06171) : Hydraulic : Lines Rotary Joint (St,T,L)
| 00***98 | Union | 1 |
| 37***99 | Pipe Connection | 1 |
| 37***99 | Screwed Socket | 2 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Load Sensing (T1, M3)
| 21***99 | Pipe ? 10x270 Lg. Bulk Ware, State Length Required | 0 |
| 37***99 | Thrust Collar | 3 |
| 37***99 | Union Nut | 3 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Main Oil Tank
| 00***98 | Union | 2 |
| 00***98 | Union | 1 |
| 08***40 | Protection Cap | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Main Pumps Control (X1)
| 37***99 | Socket | 2 |
| 37***99 | Union | 1 |
| 37***99 | Hose Fittings | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Main Pumps Control (X2)
| 00***98 | Socket | 1 |
| 37***99 | Screwed Socket | 2 |
| 50***98 | Union | 2 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Manifold (Be)
| 00***98 | Union | 1 |
| 15***40 | Test - Screw Coupling | 11 |
| 21***99 | Pipe ? 10x270 Lg. Bulk Ware, State Length Required | 0 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Oil Cooler - Fan Drive
| 00***98 | Pipe Clamp | 7 |
| 00***98 | Union | 4 |
| 30***99 | Bolt | 8 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Oil Cooler System 55?
| 17***40 | Screw Plug | 4 |
| 25***40 | Hv-Washer | 0 |
| 30***99 | Bolt (Standard) | 0 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Pilot Control Plate (Tle)
| 18***40 | Connection Plate | 6 |
| 30***99 | Screw To Valve Y11d+Y120 | 4 |
| 30***99 | Bolt 25 mm Lg | 2 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Pipes - Pilot Control Plate(Be)
| 00***98 | Test Coupling | 1 |
| 00***98 | Union | 1 |
| 21***99 | Pipe ? 12 Ca 300mm Bulk Ware, State Length Required | 0 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Preesure Lines - Main Pumps/ Hd-Filter
| 31***99 | Socket Head Cap Screw | 36 |
| 31***99 | Screw | 12 |
| 35***40 | Flange Seal | 9 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Pressure Lines - Control Blocks/ Rotary Joint
| 31***99 | Socket Head Cap Screw | 16 |
| 31***99 | Bolt (Standard) | 16 |
| 31***99 | Bolt (Standard) | 16 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Pressure Lines - Gear Oil Pump
| 00***98 | Union | 1 |
| 37***99 | Socket | 1 |
| 37***99 | Screwed Socket | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Pressure Lines - Pilot Oil Pump
| 00***98 | Half Flange | 2 |
| 00***98 | Union | 1 |
| 31***99 | Bolt | 4 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Pressure Lines - Fan Motor, Fan Pump
| 00***98 | Half Flange | 2 |
| 31***99 | Bolt | 4 |
| 32***40 | Flange Seal | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Pressure Lines - Slew Gear
| 31***99 | Socket Head Cap Screw | 8 |
| 31***99 | Bolt (Standard) | 16 |
| 31***99 | Bolt (Standard) | 8 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Pressure Lines Control Blocks Manifold
| 31***99 | Bolt (Standard) | 128 |
| 35***40 | Flange Seal | 32 |
| 50***98 | Flange | 32 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Pumps Lube Lines
| 00***98 | Half Flange | 2 |
| 31***99 | Bolt | 4 |
| 35***40 | Flange Seal | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Return Lines - Control Block
| 00***98 | Half Flange | 20 |
| 00***98 | Flange Seal | 10 |
| 08***40 | Quick Disconnect Coupling | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Return Lines - Fan Motor Fan Pump
| 00***98 | Union | 1 |
| 37***99 | Union | 1 |
| 37***99 | Pipe Connection | 4 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Return Lines - Manifold (Be)
| 00***98 | Union | 2 |
| 37***99 | Union | 4 |
| 37***99 | Socket | 16 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Return Lines Slew Gear
| 00***98 | Union | 1 |
| 37***99 | Socket | 1 |
| 37***99 | Screwed Socket | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Suction Lines
| 00***98 | Half Flange | 2 |
| 00***98 | Half Flange | 2 |
| 00***98 | Flange Seal | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Suction Tank
| 08***40 | Quick Disconnect Coupling | 1 |
| 08***40 | Protection Cap | 1 |
| 17***40 | Screw Plug | 2 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Support, Control Unit
| 15***40 | Test - Screw Coupling | 3 |
| 30***99 | Srew | 8 |
| 30***99 | Bolt | 3 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Tank Lines - Pilot Control Plate
| 00***98 | Union | 1 |
| 00***98 | Union | 1 |
| 51***98 | Hose Assembly. Dn 12x13500 | 1 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Tank Lines - Contr.-Filter Plate
| 00***98 | Union | 2 |
| 37***99 | Union | 2 |
| 37***99 | Screwed Socket | 2 |
Komatsu : H255s-1(S/N G06171) : Hydraulic : Valve Control Block (Be)
| 00***98 | Union | 3 |
| 31***99 | Bolt | 48 |
| 37***99 | Union | 1 |
Lubrication- And Refueling Equipment
Komatsu : H255s-1(S/N G06171) : Lubrication- And Refueling Equipment
Komatsu : H255s-1(S/N G06171) : Lubrication- And Refueling Equipment : --Lube Pump
| 00***98 | O-Ring To Fig-Nos. 61,62 | 2 |
| 69***14 | Pin | 1 |
| 69***16 | Bush With Thread | 1 |
Komatsu : H255s-1(S/N G06171) : Lubrication- And Refueling Equipment : -Lube Pump Sation
| 00***98 | Union | 1 |
| 19***73 | Union Nut | 1 |
| 20***40 | Coupling Sleeve Nw 12.5 | 1 |
Komatsu : H255s-1(S/N G06171) : Lubrication- And Refueling Equipment : -Metering Valve
| 26***40 | Metering Valve, Assembly | 1 |
| 26***40 | Metering Valve, Assembly | 1 |
| 27***40 | Metering Valve, Assembly | 1 |
Komatsu : H255s-1(S/N G06171) : Lubrication- And Refueling Equipment : -Pressure Filter
| 63***40 | Pressure Filter | 1 |
| 76***73 | Element (Greasing) | 1 |
| 76***73 | Repair Kit Consist. Of Fig-Nos. 03-05 | 0 |
Komatsu : H255s-1(S/N G06171) : Lubrication- And Refueling Equipment : Boom - Central Lubrication (Be)
| 00***98 | Pipe Clamp | 5 |
| 00***98 | Clamp 12/15 | 2 |
| 00***98 | Clamp 15/15 | 2 |
Komatsu : H255s-1(S/N G06171) : Lubrication- And Refueling Equipment : Electr. Parts
| 00***79 | Plug | 1 |
| 00***79 | Plug | 1 |
| 00***79 | Plug | 1 |
Komatsu : H255s-1(S/N G06171) : Lubrication- And Refueling Equipment : Gear Greasing By Pinion
| 21***99 | Pipe ? 12 Ca 300mm Bulk Ware, State Length Required | 0 |
| 30***99 | Bolt | 5 |
| 32***99 | Bolt | 4 |
Komatsu : H255s-1(S/N G06171) : Lubrication- And Refueling Equipment : Greases
| 27***40 | Grease T3 Hs -40/-10? C / 50 Kg | 1 |
| 32***40 | Grease T2 Hs -20/+10? C /50 Kg | 1 |
| 50***98 | Adhesive Lubrication Spray | 1 |
Komatsu : H255s-1(S/N G06171) : Lubrication- And Refueling Equipment : Lube Distributor Slew Ring
| 21***99 | Pipe ? 12 Ca 300mm Bulk Ware, State Length Required | 1 |
| 30***99 | Bolt | 4 |
| 30***99 | Screw | 14 |
Komatsu : H255s-1(S/N G06171) : Lubrication- And Refueling Equipment : Lube Pump Arr. With Hydr. Drive
| 00***98 | Union | 2 |
| 20***40 | Coupler Plug Nw 12.5 | 2 |
| 20***40 | Protection Cap | 2 |
Komatsu : H255s-1(S/N G06171) : Lubrication- And Refueling Equipment : Refueling Equipment With Supporting Beam
| 00***98 | Union | 1 |
| 08***40 | Rubber Hood Retainer | 2 |
| 25***40 | Circuit Element | 1 |
Komatsu : H255s-1(S/N G06171) : Lubrication- And Refueling Equipment : Stick 4,25m-Central Lubrication (Be)
| 00***98 | Test Coupling | 1 |
| 00***98 | Clamp 15/15 | 20 |
| 00***98 | Clamp 22/15 | 10 |
Operator'S Cab
Komatsu : H255s-1(S/N G06171) : Operator'S Cab : --Air Suspension
| 76***73 | Level Control, Assembly | 1 |
| 76***73 | Suspension, Upper Section | 1 |
| 76***73 | Cap | 1 |
Komatsu : H255s-1(S/N G06171) : Operator'S Cab : -Operator'S Seat
| 76***73 | Tilt Adjustment Arr | 1 |
| 76***73 | Safety Belt Assembly., Retractor | 1 |
| 76***73 | Seat Plate Assembly | 1 |
Komatsu : H255s-1(S/N G06171) : Operator'S Cab : -Pilot Oil Unit
| 51***40 | Pilot Oil Unit Consist. Of Fig-Nos: 02-37 | 1 |
| 69***73 | Housing Consist. Of Fig-Nos: 03-10 | 1 |
| 69***73 | Housing | 1 |
Komatsu : H255s-1(S/N G06171) : Operator'S Cab : -Sliding Window
| 49***40 | Sliding Window, Assembly, L.H | 1 |
| 51***98 | Screw | 16 |
| 51***98 | Screw | 2 |
Komatsu : H255s-1(S/N G06171) : Operator'S Cab : Add. Parts Protection Roof For Air Conditioning System
| 30***99 | Bolt | 8 |
| 39***40 | Hinge, Assembly. Concist. Of Fig. No 28, 29 30, 31, 32, 33 | 2 |
| 51***98 | Resilient Sleeve 17/30x50 | 8 |
Komatsu : H255s-1(S/N G06171) : Operator'S Cab : Cab Support
Komatsu : H255s-1(S/N G06171) : Operator'S Cab : Colour :
Komatsu : H255s-1(S/N G06171) : Operator'S Cab : Front Protection Motor Operated
| 11***99 | Cable Clamp | 14 |
| 18***40 | Plug | 1 |
| 30***99 | Clevis | 2 |
Komatsu : H255s-1(S/N G06171) : Operator'S Cab : Glazing
| 08***40 | Clamping Section 2800 Lg. (To Fig-Nos. 02,04) Bulk Ware, State Length Required | 0 |
| 08***40 | Filler Section 3000 Lg. Bulk Ware, State Length Required | 0 |
| 30***40 | Rear Window 803x458 | 1 |
Komatsu : H255s-1(S/N G06171) : Operator'S Cab : Operation Panel Etm
| 05***40 | Tab To Fig-No: 43 1,5 - 2,5 | 2 |
| 05***40 | Grommet | 8 |
| 05***40 | Grommet | 1 |
Komatsu : H255s-1(S/N G06171) : Operator'S Cab : Operator'S Cab
| 00***98 | Es-Pin | 2 |
| 00***98 | Es-Pin | 1 |
| 05***40 | Socket 2-Polig | 1 |
Komatsu : H255s-1(S/N G06171) : Operator'S Cab : Operator'S Cab Arr.
| 08***40 | Mirror | 2 |
| 14***40 | Sealing 20x4 Bulk Ware, State Length Required | 0 |
| 16***40 | Profiled Joint Ca. 6000 Lg. Bulk Ware, State Length Required | 1 |
Komatsu : H255s-1(S/N G06171) : Operator'S Cab : Operator'S Stand
| 00***79 | Plug | 1 |
| 00***79 | Rear Holder 2-Poles | 1 |
| 00***79 | Pin | 2 |
Komatsu : H255s-1(S/N G06171) : Operator'S Cab : Protection Roof
| 30***99 | Bolt | 8 |
| 50***98 | Bolt | 8 |
| 51***98 | Resilient Sleeve 17/30x50 | 8 |
Komatsu : H255s-1(S/N G06171) : Operator'S Cab : Windscreen Washing Assy.
| 19***40 | Diaphragm Pump | 1 |
| 19***40 | Water Reservoir | 1 |
| 19***40 | Non-Return Valve | 1 |
Slew Gear
Komatsu : H255s-1(S/N G06171) : Slew Gear : --Brake
| 31***99 | Plug | 3 |
| 33***99 | Seal Ring | 5 |
| 34***99 | Circlip | 1 |
Komatsu : H255s-1(S/N G06171) : Slew Gear : --Pressure Connecting Stage
| 34***99 | Washer | 1 |
| 50***98 | O-Ring | 1 |
| 51***98 | O-Ring | 1 |
Komatsu : H255s-1(S/N G06171) : Slew Gear : -Hydr. Motor
| 31***99 | Screw | 14 |
| 31***99 | Bolt | 8 |
| 34***99 | Shim Ring | 1 |
Komatsu : H255s-1(S/N G06171) : Slew Gear : -Slew Gear
| 21***99 | Precision Tubing 18x1,5, Lg 0,13 M Bulk Ware, State Length Required | 0 |
| 21***99 | Precision Tubing 35x2 Bulk Ware, State Length Required | 0 |
| 31***99 | Screw Plug | 1 |
Komatsu : H255s-1(S/N G06171) : Slew Gear : -Turnable Brake Valve
| 00***98 | O-Ring | 2 |
| 25***40 | Valve Disk | 4 |
| 25***40 | Compression Spring | 4 |
Komatsu : H255s-1(S/N G06171) : Slew Gear : Slew Gear Arr.
| 30***99 | Bolt | 8 |
| 31***99 | Washer | 8 |
| 31***99 | Washer | 24 |
Komatsu : H255s-1(S/N G06171) : Slew Gear : Slew Ring Protection
| 30***99 | Srew | 26 |
| 50***40 | Cover | 6 |
| 51***98 | Resilient Sleeve 13/25x50 | 26 |
Komatsu : H255s-1(S/N G06171) : Slew Gear : Slew Ring Arr.
| 18***40 | Bolt (Standard) | 88 |
| 25***40 | Hv-Washer | 96 |
| 30***40 | Test Bolt (Standard) | 8 |
Superstructure
Komatsu : H255s-1(S/N G06171) : Superstructure : Covering, Engine Housing
| 08***40 | Silent Block | 1 |
| 16***40 | Flex. Header Ca. 1400 Lg. Bulk Ware, State Length Required | 0 |
| 30***99 | Screw | 4 |
Komatsu : H255s-1(S/N G06171) : Superstructure : Fire Wall
| 30***99 | Cover Plate | 10 |
| 30***99 | Bolt | 8 |
| 33***99 | Nut | 8 |
Komatsu : H255s-1(S/N G06171) : Superstructure : Pin, Boom - Counterweight
| 30***99 | Bolt (Standard) | 12 |
| 48***40 | Pin | 2 |
| 48***40 | Pin | 2 |
Komatsu : H255s-1(S/N G06171) : Superstructure : Platforms
| 30***99 | Bolt | 4 |
| 30***99 | Bolt | 6 |
| 30***99 | Screw | 3 |
Komatsu : H255s-1(S/N G06171) : Superstructure : Rails
| 30***99 | Lock Washer | 2 |
| 30***99 | Screw | 2 |
| 30***99 | Bolt | 193 |
Komatsu : H255s-1(S/N G06171) : Superstructure : Telescopic Steps Arr. And Ladders
| 30***99 | Bolt | 4 |
| 33***99 | Nut M8 | 4 |
| 33***99 | Nut | 2 |
Undercarriage
Komatsu : H255s-1(S/N G06171) : Undercarriage
Komatsu : H255s-1(S/N G06171) : Undercarriage : --Brake
| 31***99 | Plug | 7 |
| 33***99 | Seal Ring | 7 |
| 34***99 | Circlip | 1 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : --Pressure Relief Valve
| 10***65 | O-Ring | 1 |
| 32***40 | Pressure Relief Valve, Assembly. Without Pressure Adjustment | 1 |
| 50***98 | O-Ring | 1 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : -Brake Valve
| 10***64 | O-Ring | 2 |
| 25***40 | Valve Disk | 2 |
| 25***40 | Compression Spring | 2 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : -Gear
| 00***98 | O-Ring | 1 |
| 08***11 | Chord Ca. 2,36 M Bulk Ware, State Length Required | 0 |
| 31***99 | Plug | 1 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : -Idler Assy.
| 30***99 | Screw | 8 |
| 31***40 | Axle Stirrup | 4 |
| 31***99 | Washer | 8 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : -Motor
| 08***74 | Component Sealing Applies To Fig-No. 40, 58, 131 | 0 |
| 17***40 | Union | 1 |
| 17***40 | Union | 1 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : -Rotary Joint
| 16***40 | Screw Plug | 4 |
| 20***40 | Screw Plug | 3 |
| 30***99 | Bolt | 4 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : -Tensioner
| 25***40 | Test-Screw Coupling | 1 |
| 25***40 | Seal Ring | 1 |
| 32***40 | Rod Guide Ring | 7 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : -Top Roller
| 30***99 | Bolt Standard | 4 |
| 31***99 | Plug | 1 |
| 31***40 | Scheibe | 4 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : -Track Roller
| 30***99 | Bolt | 8 |
| 32***40 | Plug | 1 |
| 32***40 | Plug | 1 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : -Valve Block
| 08***40 | Ball Cock Nw 13 | 1 |
| 21***99 | Pipe ? 20x75 Bulk Ware, State Length Required | 1 |
| 21***99 | Pipe, Assembly. ? 15x60 Bulk Ware, State Length Required | 1 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : Carbody
| 30***40 | Pin (Standard) | 8 |
| 30***99 | Screw | 64 |
| 30***99 | Bolt (Standard) | 8 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : Hydraulic :
Komatsu : H255s-1(S/N G06171) : Undercarriage : Pipes - Brake
| 37***99 | Socket | 1 |
| 37***99 | Socket | 2 |
| 37***99 | Socket | 2 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : Pressure Lines, Travelling Motor-Rotary Joint
| 15***40 | Test - Screw Coupling | 2 |
| 30***99 | Bolt | 4 |
| 30***99 | Screw | 8 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : Track Adjusting
| 00***98 | Test Socket | 2 |
| 15***40 | Test - Screw Coupling | 4 |
| 25***40 | Suction Line Dn 60 Bulk Ware, State Length Required | 2 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : Track Group
| 33***99 | Nut (Standard) | 184 |
| 34***99 | Washer | 368 |
| 44***40 | Bolt | 184 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : Track Group-Drive Sprocket
| 25***40 | Hv-Washer | 108 |
| 30***99 | Bolt | 16 |
| 30***99 | Bolt (Standard) | 60 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : Track Group-Idler Protection
| 30***99 | Bolt 200lg. (Standard) | 62 |
| 30***99 | Bolt | 10 |
| 30***99 | Bolt 20mm Lenght | 4 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : Travelling Gear Brake Valve Arr.
| 15***40 | Test - Screw Coupling | 1 |
| 30***99 | Bolt | 4 |
| 31***99 | Washer | 4 |
Komatsu : H255s-1(S/N G06171) : Undercarriage : Travelling Motor - Leakage Line
| 37***99 | Union | 3 |
| 37***99 | Union | 1 |
| 37***99 | Union | 2 |
Frequently asked questions
What engine powers the Komatsu H255S-1 (S/N G06171)?
A Cummins K1500E, a V12 turbocharged diesel on the K38 platform, rated at roughly 900 kW (1,207 hp) at 1,800 rpm. Exact output can vary by configuration and build date - confirm against the specific serial's engine data plate.
What is the operating weight of the Komatsu H255S-1 (S/N G06171)?
Approximately 240,000 kg (about 529,000 lb) in standard mining-shovel configuration. Front attachment and counterweight options can shift this figure, so treat it as a class-typical range rather than an exact number.
What replaced the Komatsu H255S-1?
Komatsu folded the Demag-heritage H-series naming into its own PC-series lineup. This serial range's own factory documentation carries both the H255S-1 and PC3000-1 designations, and later production continued under the PC3000 series badge.
What H255S-1(S/N G06171) owners discuss
What engine is actually in the H255S-1 (S/N G06171), and how does it behave day to day?
This shovel carries the Cummins K1500E, the V12 turbocharged member of the K38 family, rated in the neighborhood of 1260 hp (940 kW) at 1800 rpm - figures move around a bit depending on the specific rating and altitude derate applied to the unit. Owners of this K38/K1500E generation describe it as a mechanically simple, PT (Pressure-Time) fuel system engine on earlier builds, with no common rail and minimal electronics in the fuel path, which is why it stays field-rebuildable at remote mine sites. Later production runs add Cummins electronic monitoring on top of the same base engine. Expect a long, slow warm-up cycle before working the machine hard, and expect the engine to run happiest under steady load rather than light-load idling for long stretches, which tends to glaze cylinders and foul injectors over time.
What hydraulic system quirks show up on this class of shovel?
With a reservoir in the multi-thousand-liter range feeding boom, stick, bucket, swing and travel circuits, the recurring theme in the field is contamination control, not exotic component failure. Leaks at hose ends, flange fittings and cylinder seals are the most common nuisance, especially on the stick and bucket cylinders that see the highest cycle counts. Overheating usually traces back to a dirty cooler core or a marginal cooling fan drive rather than the pumps themselves. Slow or jerky digging motions after a cold start are normal until oil temperature comes up; if it persists once warm, that points to air in the system or a filter close to bypass, not a pump problem.
What undercarriage and structural wear patterns should an owner expect?
This shovel class uses large-diameter rollers, idlers and sprockets with hardened track link pin bores, which is exactly the design that keeps track pad wear manageable on a 200+ tonne class machine - but the pads themselves still wear steadily and get measured with a depth gauge at scheduled intervals rather than eyeballed. Boom, stick and bucket pin/bushing joints are the other wear point operators watch closest: field practice on machines this size is to check pin and bushing play with a pry bar and record movement at every service interval, and to treat uneven wear or bore-surface scoring as the early warning sign before a joint starts knocking. Because a cracked pin or an egged-out boom bore is a structural safety issue on a shovel this size, have your dealer verify any pin, bushing, or boom-eye wear finding before returning the machine to service.
What electrical or sensor issues come up on this machine?
Reports split by build era. Earlier mechanical-fuel-system units run with comparatively few electronic sensors, so electrical complaints tend to be basic - battery and charging faults, wiring chafe at hinge points, and gauge sender issues rather than control-module faults. Units fitted with Cummins' electronic engine monitoring add pressure and temperature sensor inputs that feed the cab display; when those act up, the usual culprits are a loose or corroded connector at the sensor rather than the sensor or the module itself. Either way, chase wiring and connectors first before swapping expensive components.
Are there any known quirks specific to this engine/shovel pairing worth knowing before operating it?
The K1500E's rated output holds up to altitudes around 2400 m (8000 ft) before derating, which matters if the machine has moved between mine sites at different elevations - a shovel that felt strong at low elevation can feel notably softer up high, and that is normal engine behavior, not a fault. On the shovel side, this is a face-shovel front, not a backhoe front, so digging geometry and loading technique differ from a standard mass excavator; operators moving from a smaller hydraulic excavator onto this machine typically need a break-in period to relearn bucket fill technique before productivity normalizes.
What should a buyer check before purchasing this specific used H255S-1 (S/N G06171)?
Pull the hour meter history and service records first - on a shovel this size, gaps in documented 500-hour and 1000-hour service intervals (filter changes, gear oil sampling on swing and travel, track tensioning accumulator checks) are a bigger red flag than the hour total itself. Have a qualified inspector check pin and bushing play at every major joint, inspect boom/stick/bucket structure and welds for cracking, and check track pad wear with a depth gauge rather than by eye. Get an oil and coolant sample analysis on the engine and confirm which fuel system generation the K1500E on this unit actually has, since maintenance approach differs between the mechanical PT version and the electronically monitored version. Because a shovel of this weight class carries real structural and hydraulic-accumulator safety risk if a wear item is missed, have your dealer verify the full pre-purchase inspection before finalizing the deal.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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