Komatsuhydraulic shovels(no series)
Komatsu H65(S/N G26014)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu H65(S/N G26014) is a Demag-heritage crawler hydraulic shovel in Komatsu's mining-class H-series, produced roughly 1987 to 2000 under the Demag design lineage that Komatsu later absorbed into its mining equipment line. Operating weight runs about 66.3 to 68 t (146,200 to 149,900 lb) depending on track shoe width (500, 600, or 700 mm), placing it in the 65 to 70 tonne shovel class. Power came from one of two mechanical, pre-electronic diesel options offered from the factory: a Cummins NTA855-C400 rated 298 kW (400 hp) or a Caterpillar 3406 DITA rated 268 kW (359 hp), both turbocharged inline-six units in the 14.0 to 14.6 L displacement range. The H65 shares its basic hydraulic-shovel architecture with the larger Demag-heritage H185S-1, H255S-1, and H485S-1 shovels, scaled down to a mid-size mining and heavy-construction footprint. Komatsu offered the H65 in front-shovel (face-shovel/dump-bucket) and backhoe front-end configurations, with factory options including an exhaust particulate filter, an overload warning device, and cab air conditioning.
Across the Demag-heritage H-series, differences between units centered on engine choice, front-end configuration, and track shoe width rather than a single fixed platform. The H65's dual Cummins/Caterpillar engine option reflects the practice of qualifying more than one prime mover per chassis for different regional markets and customer preference. As a mechanically governed, pre-electronic shovel, this generation carries no digital fault-code system, so field diagnosis relies on pictograph and lamp warnings with an audible buzzer rather than stored codes. In the used and parts market, the H65 remains relevant mainly as a source of long-service mining-class components such as final drives, swing gearing, undercarriage parts, and mechanical engine components for operators keeping older Demag/Komatsu shovels running, and as a lower-cost entry point into shovel-class production compared with the larger H185S, H255S, and H485S siblings.
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 H65(S/N G26014) specifications
Engine
| Engine options (factory) | Two diesel engine options documented for this model range: a turbocharged inline-6 rated 298 kW (400 hp), and an alternate turbocharged-aftercooled inline-6 rated 268 kW (359 hp). Exact factory fitment for this specific serial is not confirmed in published data — check the engine nameplate or verify with your dealer. |
| Displacement | Approx. 14.0 L (855 cu in) for the higher-output option; approx. 14.6 L (890 cu in) for the alternate option. |
| Cylinders | 6, inline, 4-stroke, on both engine options. |
| Emissions tier | Mechanical (non-electronic) diesel with no certified emissions tier, consistent with this machine's late-1980s to late-1990s production era. |
Weights
| Operating weight, 500 mm track shoes | 66.3 to 66.5 t (146,200 to 146,600 lb), backhoe or front-shovel front end fitted. |
| Operating weight, 600 mm track shoes | Approx. 67 t (147,700 lb). |
| Operating weight, 700 mm track shoes | Approx. 68 t (149,900 lb). |
| Operating weight, 800/900 mm track shoes | Wider shoe options are offered but a published weight figure for these widths was not found — verify with your dealer. |
| Ground pressure | Not published for this model in available factory data — verify with your dealer. |
| Shipping weight | Not separately documented from operating weight in available sources. |
Dimensions
| Overall/transport length | Approx. 6.6 m (21 ft 8 in). |
| Overall/transport width | Approx. 4.1 to 4.14 m (13 ft 6 in to 13 ft 7 in), varies with track shoe width fitted. |
| Overall height | Approx. 3.7 m (12 ft 2 in) per factory data; figure varies by source and by boom/counterweight configuration used for transport, with some listings closer to 4.5 m (14 ft 9 in). |
| Track (chain) length | Approx. 5.58 m (18 ft 4 in). |
| Track shoe width | 500 mm, 600 mm, 700 mm, 800 mm, or 900 mm shoe options. |
| Undercarriage (track) height | Approx. 1.37 m (4 ft 6 in). |
Performance
| Travel speed | Approx. 2.2 km/h (1.4 mph). |
| Backhoe front end — boom and stick | Monoblock boom approx. 6.5 m (21 ft 4 in); stick approx. 3.0 m (9 ft 10 in). |
| Backhoe front end — dig depth and reach height | Max dig depth approx. 7.0 m (23 ft); max reach height approx. 12.5 m (41 ft). |
| Backhoe front end — breakout and tearout force | Bucket breakout force approx. 300 kN (67,400 lbf); arm tearout force approx. 325 kN (73,100 lbf). |
| Backhoe buckets | Standard bucket approx. 4.4 cu m (5.8 cu yd), approx. 2.1 m wide, approx. 2.3 t, rated for material up to 1.8 t per cu m. Rock bucket approx. 4.0 cu m (5.2 cu yd), approx. 2.0 m wide, approx. 3.2 t. Bulk-material bucket approx. 5.0 cu m (6.5 cu yd), approx. 2.25 m wide, approx. 2.5 t, rated for material up to 1.5 t per cu m. |
| Front-shovel front end — boom and stick | Boom approx. 4.1 m (13 ft 5 in); stick approx. 3.0 m (9 ft 10 in), fitted with a dump-type (clamshell) bucket. |
| Front-shovel front end — breakout and crowd force | Breakout force approx. 360 kN (81,000 lbf); crowd/push force approx. 680 kN (152,900 lbf). |
| Front-shovel front end — reach, depth, bucket travel | Max reach height approx. 10.0 m (33 ft); max dig depth approx. 3.0 m (10 ft); forward bucket travel approx. 3.8 m (12 ft 6 in). |
| Front-shovel bucket | Dump/clamshell bucket approx. 4.3 cu m (5.6 cu yd), approx. 2.7 m wide, approx. 6.8 t, rated for material up to 1.8 t per cu m. |
| Gradeability | Not published for this model in available factory data — verify with your dealer. |
Service capacities (summary)
| Fuel tank | Not documented for this model in available factory data — verify with your dealer. |
| Hydraulic system | Not documented for this model in available factory data — verify with your dealer. |
| Engine oil | Not documented for this model in available factory data — verify with your dealer. |
| Cooling system | Not documented for this model in available factory data — verify with your dealer. |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
H65(S/N G26014) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) - Cummins NTA855-series diesel | Not published for S/N G26014 in available factory literature; verify with dealer OMM | Diesel engine oil meeting the Cummins NTA855 spec (API CF-4/CG-4 or later); use the multigrade viscosity called for by the ambient temperature chart in the OMM |
| Cooling system | Not published for S/N G26014 in available factory literature; verify with dealer OMM | Ethylene-glycol based coolant/antifreeze per the OMM's climate table; corrosion inhibitor per the coolant supplement schedule |
| Fuel tank | Not published for S/N G26014 in available factory literature; verify with dealer OMM | Diesel fuel per the OMM's cetane/sulfur spec; low-sulfur or arctic-grade per climate notes |
| Swing drive gearbox (each) | Not published for S/N G26014 in available factory literature; verify with dealer OMM | Gear oil per the OMM's viscosity-by-climate table for the swing reduction unit |
| Travel (final) drive gearbox (each side) | Not published for S/N G26014 in available factory literature; verify with dealer OMM | Gear oil per the OMM's viscosity-by-climate table for the travel reduction units |
| Hydraulic tank | Not published for S/N G26014 in available factory literature; verify with dealer OMM | Hydraulic oil per the OMM's viscosity-by-climate table; anti-wear hydraulic fluid grade suited to the pump/valve system |
| Hydraulic system total (tank plus lines/cylinders/cooler) | Not published for S/N G26014 in available factory literature; verify with dealer OMM | Same hydraulic oil grade as the tank fill; do not mix viscosity grades within the system |
| Grease points (swing bearing, boom/arm pins, bucket linkage) | Per-point volumes not published for S/N G26014; grease per the OMM's lubrication interval chart | Multipurpose lithium-complex EP grease; NLGI grade per the OMM's climate note (softer grade for cold ambient) |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu H65(S/N G26014) 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 H65(S/N G26014) beyond the schedule
Predictive Maintenance & Fluid Analysis
On the H65(S/N G26014), predictive upkeep centers on fluid sampling rather than fault-code diagnostics, since this mechanical, pre-electronic shovel carries no ECM or stored codes. Pull scheduled hydraulic oil samples to track wear metals from the main pump, swing motor, and travel motors before seals or bearings fail. Run engine oil analysis for whichever engine is fitted, the Cummins NTA855-C400 or Caterpillar 3406 DITA, to catch turbocharger and injector wear early. Log undercarriage and pin-joint wear visually every shift to spot trends before failure.
Corrective & Common Repairs
Common corrective work on the H65 targets the undercarriage and front-end pin joints. Track shoe bolts loosen under mining duty and need re-torque, while boom, arm, and bucket or backhoe pins and bushings wear from continuous digging cycles and need regreasing or replacement. On the powertrain, expect turbocharger and injector attention on either engine option, plus swing bearing wear and gear-oil contamination in the final drives. With no fault-code system on board, technicians diagnose leaks, noise, and pressure loss by direct inspection rather than pulled codes.
Overhaul & Rebuild Points
Major overhaul points on the H65(S/N G26014) fall at the hydraulic system, swing and travel drives, and undercarriage. Full hydraulic oil changes pair with main pump and motor teardown for internal wear. Swing and final drive gear-oil changes pair with bearing and seal inspection. Track rollers, idlers, and shoes wear through under mining duty and are typically rebuilt or replaced as a set. Engine overhaul follows the Cummins or Caterpillar OEM rebuild schedule for whichever mechanical, pre-ECM prime mover this unit carries.
Seasonal & Environment Servicing
Seasonal servicing on the H65 follows standard mining-shovel practice. Switch to winter-grade fuel and hydraulic oil ahead of cold weather and check coolant freeze protection, since the mechanical Cummins or Caterpillar diesel has no electronic cold-start management. In hot, dusty pits, shorten air cleaner and radiator/oil cooler cleaning intervals and check the cab air-conditioning system if fitted. Abrasive face material and the chosen front-end configuration, front-shovel or backhoe, both accelerate bucket, pin, and undercarriage wear and should shorten grease intervals.
H65(S/N G26014) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 988 702 | Fuel Filter | Fuel system service | Check fitment → |
| 9M2 342 | Fuel Precleaner Element, Washable | Fuel system service | Check fitment → |
| 988 633 | Main Element - Air Cleaner | Air intake service | Check fitment → |
| 988 634 | Safety Element - Air Cleaner | Air intake service | Check fitment → |
| 988 701 | Oil Filter | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
H65(S/N G26014) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| Engine oil pressure lamp (red pictograph + buzzer, no numeric code) | Engine lube oil pressure has dropped below the safe minimum | Low oil level, clogged oil filter, worn oil pump, or a failed pressure sender | Stop the engine immediately and check oil level and filter condition before restarting |
| Coolant temperature lamp (red pictograph + buzzer, no numeric code) | Engine coolant temperature has exceeded the safe operating range | Low coolant level, blocked radiator core, slipping fan belt, or thermostat failure | Idle down, let the machine cool, then check coolant level and radiator condition |
| Charge/alternator lamp (red pictograph, no numeric code) | Charging circuit is not supplying the battery system | Broken or slipping alternator belt, faulty alternator, or a wiring/connector fault | Check belt tension first, then test alternator output and wiring |
| Hydraulic oil temperature lamp (red pictograph + buzzer, no numeric code) | Main hydraulic oil temperature has exceeded the safe operating range | Low oil level, blocked oil cooler, failing cooling fan, or sustained high-load digging in hot ambient conditions | Reduce workload or idle down, then check oil level and cooler fins/core once safe to inspect |
| Hydraulic filter restriction indicator (mechanical pop-up button or lamp, no numeric code) | Return-line or pilot hydraulic filter is loading up and restricting flow | Filter element reaching its service interval or contaminated hydraulic oil | Replace the affected filter element and check oil cleanliness |
| Air cleaner restriction indicator (mechanical vacuum gauge or lamp, no numeric code) | Engine air filter is loading up and restricting intake airflow | Dirty or clogged primary air filter element | Inspect and clean or replace the air filter element |
| Overload warning lamp/buzzer (pressure-switch based, no numeric code) | Hoist/lift hydraulic pressure has reached the factory-set threshold indicating the machine is near its tipping or rated-lift limit for the front end fitted | Load exceeds the safe capacity for the current boom/stick/bucket configuration and reach, or the pressure switch/wiring has drifted out of calibration | Ease off the load immediately and reposition or reduce bucket load; if the lamp triggers with a known-light load, have the pressure switch and wiring checked |
| Fuel level low warning (gauge/lamp, no numeric code) | Fuel tank level has dropped to reserve | Normal consumption approaching an empty tank | Refuel; if the lamp stays lit with a full tank, check the sender unit and wiring |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
H65(S/N G26014) attachments & work tools
Front shovel (face shovel) bucket
The H65 is built as a front-loading face shovel for pit-face and bank loading, matching its roughly 66 t operating class. Published bucket capacity for this exact serial range is not documented; size the bucket to the class and confirm with a Komatsu Mining dealer before ordering.
Backhoe (digging) front end
The same H-series chassis line was also offered as a backhoe digging shovel with a rear-mounted dipper bucket instead of the front-shovel arrangement. Swapping between shovel and backhoe front-end hardware is a factory or dealer-level rebuild, not a routine field changeout.
Quick-change coupling system
This unit is factory-fitted with both mechanical and hydraulic quick-change couplings at the work-tool mount, allowing the bucket or shovel front end to be exchanged without a full pin-and-bushing strip-down.
Hydraulic-kit arrangement for powered tools
The hydraulic quick-coupling carries hydraulic line pass-through at the tool face, which is the plumbing arrangement needed to run a powered attachment such as a hammer if one is fitted. No specific powered work tool is confirmed in factory literature for this model; treat any hammer or shear fitment as a dealer-engineered option, not catalog-standard.
Cab, filtration and safety options
Factory-recorded options for this class include a particulate filter, an overload warning device, and cab air-conditioning. These are machine-level factory options rather than work-tool attachments, but they are the notable configuration choices documented alongside the shovel/backhoe front end.
All H65(S/N G26014) assemblies by section
Every catalogued assembly group for the Komatsu H65(S/N G26014). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
* = Variations From Page:
Komatsu : H65(S/N G26014) : * = Variations From Page : : Pipe Assy. ? 38 Fig-No. 02
| 00***98 | Half Flange | 2 |
| 13***40 | Plug | 1 |
| 15***40 | Test - Screw Coupling | 1 |
Komatsu : H65(S/N G26014) : * = Variations From Page : : Pipe Assy. ? 38 Fig-No. 03
| 00***98 | Half Flange | 2 |
| 13***40 | Plug | 1 |
| 15***40 | Test - Screw Coupling | 1 |
Komatsu : H65(S/N G26014) : * = Variations From Page : : Pipe Assy. ? 38 Fig-No. 10
| 31***99 | Bolt | 96 |
| 50***98 | Flange | 24 |
| 50***98 | Collar Ring | 24 |
Komatsu : H65(S/N G26014) : * = Variations From Page : : Pipe Assy. ? 38 Fig-No. 12
| 31***99 | Bolt | 96 |
| 50***98 | Flange | 24 |
| 50***98 | Collar Ring | 24 |
Komatsu : H65(S/N G26014) : * = Variations From Page : : Platform Fig-No. 37
| 16***40 | Profiled Joint Ca. 6000 Lg. Bulk Ware, State Length Required | 0 |
| 25***40 | Hv-Washer | 4 |
| 28***40 | Bush | 4 |
Komatsu : H65(S/N G26014) : * = Variations From Page : : Acc. Mdc From 24th. Jan. 90 Backhoe On S/No. 26 058
Komatsu : H65(S/N G26014) : * = Variations From Page : : Acc. Drawing-No.
Annex
Komatsu : H65(S/N G26014) : Annex : Colour : Yellow
Komatsu : H65(S/N G26014) : Annex : Electric Schematic
Komatsu : H65(S/N G26014) : Annex : Hydraulic Schematic
Komatsu : H65(S/N G26014) : Annex : Tools And Accessories
Backhoe Equipment
Komatsu : H65(S/N G26014) : Backhoe Equipment
Komatsu : H65(S/N G26014) : Backhoe Equipment : Backhoe 4.0 Cbm
Komatsu : H65(S/N G26014) : Backhoe Equipment : Backhoe 4.6 Cbm
Komatsu : H65(S/N G26014) : Backhoe Equipment : Boom 6,5 M
| 00***98 | Clamp | 6 |
| 00***98 | Mounting Clip | 1 |
| 00***98 | Grease Nipple | 5 |
Komatsu : H65(S/N G26014) : Backhoe Equipment : Hydraulic Cylinder
| 00***98 | Grease Nipple | 3 |
| 18***40 | Gasket Kit | 1 |
| 18***40 | Stripper Ring | 1 |
Komatsu : H65(S/N G26014) : Backhoe Equipment : Pipes Bucket Cylinder
| 00***98 | O-Ring | 2 |
| 30***99 | Cover Plate | 4 |
| 31***99 | Bolt | 8 |
Komatsu : H65(S/N G26014) : Backhoe Equipment : Pipes Stick Cylinder
| 00***98 | O-Ring | 1 |
| 00***98 | O-Ring | 1 |
| 11***40 | Pipe Bracket | 1 |
Komatsu : H65(S/N G26014) : Backhoe Equipment : Pipes, Basic Boom Cylinder R.H. And L.H.
| 31***99 | Socket Head Cap Screw | 8 |
| 32***99 | Thread Pin | 4 |
| 42***40 | Boom Cylinder Assembly | 1 |
Komatsu : H65(S/N G26014) : Backhoe Equipment : Stick 3.0 M
| 00***98 | Mounting Clip | 2 |
| 00***98 | Grease Nipple | 6 |
| 14***40 | Hose Assembly. Nw 6x600 Lg | 1 |
Komatsu : H65(S/N G26014) : Backhoe Equipment : Wishbone And Rod
| 00***98 | Grease Nipple | 3 |
| 21***40 | Bolt Lock | 4 |
| 26***40 | Stripper | 6 |
Drive
Komatsu : H65(S/N G26014) : Drive
Komatsu : H65(S/N G26014) : Drive : -Air Cleaner
| 22***40 | Air Cleaner, Assembly | 1 |
| 69***38 | Cover, Assembly | 1 |
| 69***39 | Housing, Top | 1 |
Komatsu : H65(S/N G26014) : Drive : -Combined Cooler
| 30***99 | Screw | 28 |
| 32***40 | Combi-Oil-Water Radiator | 1 |
| 33***99 | Nut M8 | 28 |
Komatsu : H65(S/N G26014) : Drive : -Engine
| 0L***65 | Lock Washer | 1 |
| 0S***71 | Bolt | 1 |
| 0S***85 | Bolt | 1 |
Komatsu : H65(S/N G26014) : Drive : -Main Pump
Komatsu : H65(S/N G26014) : Drive : -Pressure Relief Valve
| 31***99 | Eyebolt | 2 |
| 31***99 | Bolt (Standard) | 4 |
| 32***40 | Pressure Relief Valve | 1 |
Komatsu : H65(S/N G26014) : Drive : -Pump Distributor Gear
| 00***98 | Inner Ring | 1 |
| 00***98 | O-Ring | 1 |
| 08***21 | O-Ring | 1 |
Komatsu : H65(S/N G26014) : Drive : -Return Oil Filter
| 33***99 | Nut | 2 |
| 33***99 | Nut | 1 |
| 33***99 | Seal Ring | 1 |
Komatsu : H65(S/N G26014) : Drive : Air Cleaning System, Cat
| 00***98 | Hose Clip | 10 |
| 14***40 | Maintenance Switch | 1 |
| 26***40 | Felt Disk | 1 |
Komatsu : H65(S/N G26014) : Drive : Air Filter And Combined Cooler Arrangement
| 28***40 | Yoke | 2 |
| 30***99 | Screw | 3 |
| 30***99 | Bolt | 4 |
Komatsu : H65(S/N G26014) : Drive : Cold-Starting-System
| 40***40 | Retainer | 1 |
| 69***60 | Replacement Cartridge - Cold-Start-System | 1 |
| 69***61 | Clamp | 1 |
Komatsu : H65(S/N G26014) : Drive : Coupling, Mounting, Cat
| 32***40 | Coupling Assembly. Fig-No: 01-04 | 1 |
| 50***98 | Grub Screw | 1 |
| 69***01 | Plastic Spacer Ring | 1 |
Komatsu : H65(S/N G26014) : Drive : Drive, Cat
| 00***98 | Bolt | 12 |
| 00***98 | Screw | 10 |
| 00***98 | Bolt | 2 |
Komatsu : H65(S/N G26014) : Drive : Engine : Caterpillar / Type
Komatsu : H65(S/N G26014) : Drive : Exhaust System, Cat
| 24***40 | Flange | 1 |
| 25***40 | Compensator | 1 |
| 27***40 | Tail Piece | 1 |
Komatsu : H65(S/N G26014) : Drive : Fan Supporting
| 03***99 | V-Belt Set | 1 |
| 30***99 | Bolt | 6 |
| 30***99 | Bolt | 6 |
Komatsu : H65(S/N G26014) : Drive : Fuel System, Cat
| 23***40 | Ball Cock | 1 |
| 25***40 | Hose Nw 12x3000 Bulk Ware, State Length Required | 2 |
| 26***40 | Socket | 4 |
Komatsu : H65(S/N G26014) : Drive : Fuel Tank
| 05***40 | Gasket | 1 |
| 08***40 | Oil-Level Glass | 1 |
| 18***40 | Plug, Assembly | 1 |
Komatsu : H65(S/N G26014) : Drive : Lines To Radiator
| 00***98 | Clamp | 3 |
| 00***98 | Clamp | 1 |
| 05***40 | Cable Sleeve | 2 |
Komatsu : H65(S/N G26014) : Drive : Mounting - Pumps - Pump Distributor Gear
| 30***99 | Bolt 25 mm Lg | 4 |
| 30***99 | Bolt (Standard) | 12 |
| 31***99 | Washer | 12 |
Komatsu : H65(S/N G26014) : Drive : Oil Tank And Suction Pipe
| 00***98 | O-Ring | 1 |
| 00***98 | O-Ring | 1 |
| 00***98 | O-Ring | 1 |
Komatsu : H65(S/N G26014) : Drive : Output :
Komatsu : H65(S/N G26014) : Drive : Serial-No. :
Komatsu : H65(S/N G26014) : Drive : Series :
Komatsu : H65(S/N G26014) : Drive : Speed Control
| 00***98 | Sleeve | 2 |
| 15***40 | Clamping Ring | 2 |
| 21***99 | Plastic Pipe ? 10x600 Lg. Bulk Ware, State Length Required | 0 |
Komatsu : H65(S/N G26014) : Drive : Suctions Lines
| 00***98 | Clamp | 6 |
| 00***98 | Hose Clamp | 2 |
| 12***40 | Spiral Hose | 2 |
Electric
Komatsu : H65(S/N G26014) : Electric : Battery Cables
| 05***40 | Battery Switch | 1 |
| 14***40 | Cable Shoe | 4 |
| 31***99 | Screw | 2 |
Komatsu : H65(S/N G26014) : Electric : Electric System
| 05***40 | Plug To Fig-No: 17 | 1 |
| 05***40 | Socket | 1 |
| 26***40 | Horn | 1 |
Komatsu : H65(S/N G26014) : Electric : Junction Box
| 05***40 | Ground Wire - Series Terminal | 1 |
| 25***40 | Housing, Empty | 1 |
| 25***40 | Assembly Rail Bulk Ware, State Length Required | 1 |
Komatsu : H65(S/N G26014) : Electric : Lighting Equipm. - Operator'S Cabin
| 05***40 | Cable Sleeve | 2 |
| 05***40 | Plug To Fig-No: 17 | 1 |
| 05***40 | Socket | 1 |
Komatsu : H65(S/N G26014) : Electric : Lighting Equipm.- Spotlight
| 25***40 | Spread Bearm Headlamp 2x 100w 24v | 1 |
| 26***40 | Halogen Lamp 100 W / 24 V | 2 |
| 28***40 | Lining | 1 |
Komatsu : H65(S/N G26014) : Electric : Lighting Equipment
| 00***98 | Clamp 15/15 | 12 |
| 05***40 | Wiring Connection | 1 |
| 05***40 | Bulb 35 W | 2 |
Komatsu : H65(S/N G26014) : Electric : Operator'S Plate
| 17***40 | Hour Meter | 1 |
| 18***40 | Relay | 1 |
| 25***40 | Oil Temperature Gauge | 2 |
Komatsu : H65(S/N G26014) : Electric : Switch Cabinet
| 05***40 | Cable Protection Hose Pg 7 Bulk Ware, State Length Required | 0 |
| 08***40 | Double-Bit Key ? 3.2 | 0 |
| 16***40 | Double-Bit Key ? 5.2 | 0 |
Komatsu : H65(S/N G26014) : Electric : Switch Cabinet, Vo
| 05***40 | Socket 2-Polig | 1 |
| 25***40 | Housing, Empty | 1 |
| 32***99 | Screw | 8 |
Komatsu : H65(S/N G26014) : Electric : Wire Layout - Oil Tank - Control Blocks
| 00***98 | Clamp 15/15 | 10 |
| 00***98 | Clamp 22/15 | 10 |
| 00***98 | Clamp 18/15 | 10 |
Komatsu : H65(S/N G26014) : Electric : Wire Layout, Cabin
| 00***98 | Clamp 15/15 | 10 |
| 05***15 | Cable Protection Hose Ca. 4000 mm Bulk Ware, State Length Required | 1 |
| 05***40 | Cable Protection Hose Pg 7 Bulk Ware, State Length Required | 1 |
Komatsu : H65(S/N G26014) : Electric : Wire Layout, Engine Cat
| 05***40 | Cable Lug, Red | 15 |
| 35***40 | Cable Protection Hose Pg 21 Pg 21x1400 Lg. Bulk Ware, State Length Required | 2 |
| 35***40 | Socket Pg 21 | 4 |
General View
Komatsu : H65(S/N G26014) : General View : General View
Komatsu : H65(S/N G26014) : General View : General View Backhoe Equipment
Komatsu : H65(S/N G26014) : General View : General View Drive
Komatsu : H65(S/N G26014) : General View : General View Electric
Komatsu : H65(S/N G26014) : General View : General View Hydraulic
Komatsu : H65(S/N G26014) : General View : General View Operator'S Cab
Komatsu : H65(S/N G26014) : General View : General View Superstructure
Komatsu : H65(S/N G26014) : General View : General View Undercarriage
Komatsu : H65(S/N G26014) : General View : Machine Maintenance Parts
| 00***98 | O-Ring | 1 |
| 00***98 | O-Ring | 1 |
| 00***98 | O-Ring | 1 |
Komatsu : H65(S/N G26014) : General View : Painting/Decals/Stop Pads
| 11***40 | Step Pad | 10 |
| 12***40 | Plate, Spain | 2 |
| 12***40 | Plate, French | 2 |
Hydraulic
Komatsu : H65(S/N G26014) : Hydraulic : -Control Block
| 00***98 | O-Ring | 16 |
| 31***99 | Screw M8 X 20 | 12 |
| 31***99 | Screw | 16 |
Komatsu : H65(S/N G26014) : Hydraulic : -H.P. Filter, Pilot Oil
| 25***40 | O-Ring, H.P. Element Lubrication + Cooling | 1 |
| 27***40 | High Pressure Filter, Assembly | 1 |
| 96***00 | Socket | 1 |
Komatsu : H65(S/N G26014) : Hydraulic : -H.P. Filter, Pumps I,Ii,Iii
| 31***99 | Screw | 4 |
| 33***40 | Filter Insert (Strainer) - H.P. Filter | 1 |
| 34***99 | Lock Washer | 4 |
Komatsu : H65(S/N G26014) : Hydraulic : -Load Limitation Valve Arr.
| 17***40 | Plug | 3 |
| 33***99 | Nut | 1 |
| 36***40 | Load Limitation Valve Assembly. For H 121 (All Diesel Engines) | 1 |
Komatsu : H65(S/N G26014) : Hydraulic : Anticavitation Valve
| 25***40 | Anticavitation Valve Assembly. Ng 20 | 1 |
| 36***99 | O-Ring | 2 |
| 50***98 | O-Ring | 1 |
Komatsu : H65(S/N G26014) : Hydraulic : Arr. Control Blocks, H.P. Filter
| 00***98 | Half Flange | 3 |
| 15***40 | Test - Screw Coupling | 3 |
| 30***99 | Bolt | 2 |
Komatsu : H65(S/N G26014) : Hydraulic : Backhoe Control
| 00***98 | Half Flange | 2 |
| 13***40 | Plug | 1 |
| 15***40 | Test - Screw Coupling | 1 |
Komatsu : H65(S/N G26014) : Hydraulic : Bleed-Off Valve
| 00***98 | O-Ring | 4 |
| 00***98 | O-Ring | 2 |
| 31***99 | Screw | 2 |
Komatsu : H65(S/N G26014) : Hydraulic : Control Blocks - H.P. Filter- Pumps
| 00***98 | O-Ring | 9 |
| 14***40 | Half Flange | 6 |
| 31***99 | Screw | 24 |
Komatsu : H65(S/N G26014) : Hydraulic : Control Blocks - Manifold
| 31***99 | Bolt | 96 |
| 50***98 | Flange | 24 |
| 50***98 | Collar Ring | 24 |
Komatsu : H65(S/N G26014) : Hydraulic : Control Blocks - Rotary Joint
| 00***98 | Half Flange | 8 |
| 00***98 | O-Ring | 8 |
| 00***98 | Plug-In Sleeve | 2 |
Komatsu : H65(S/N G26014) : Hydraulic : Control Blocks - Swing Gear
| 00***98 | Half Flange | 4 |
| 00***98 | O-Ring | 4 |
| 00***98 | Union | 3 |
Komatsu : H65(S/N G26014) : Hydraulic : Control Lines
| 00***98 | Union | 1 |
| 00***40 | Sleeve | 0 |
| 15***40 | Clamping Ring | 0 |
Komatsu : H65(S/N G26014) : Hydraulic : Control Lines - Load Limitation Valve - Pumps
| 00***40 | Sleeve | 0 |
| 15***40 | Clamping Ring | 0 |
| 25***40 | Hose Dn 8 X Ca. 2000 Lg. Bulk Ware, State Length Required | 0 |
Komatsu : H65(S/N G26014) : Hydraulic : Control Lines, Pilot Oil Unit
| 00***98 | Union | 2 |
| 00***98 | Union | 3 |
| 00***98 | Union | 1 |
Komatsu : H65(S/N G26014) : Hydraulic : Control Lines, Pilot Oil Unit, R.H.
| 00***98 | Union | 1 |
| 00***98 | Sleeve | 0 |
| 15***40 | Clamping Ring | 0 |
Komatsu : H65(S/N G26014) : Hydraulic : Control Lines-Control Blocks - Load Limitation Valve-Pumps
| 00***98 | Test Socket | 1 |
| 00***40 | Sleeve | 0 |
| 00***98 | Sleeve | 0 |
Komatsu : H65(S/N G26014) : Hydraulic : Hydr. Control
| 00***40 | Sleeve | 0 |
| 15***40 | Clamping Ring | 0 |
| 18***40 | Connection Plate | 1 |
Komatsu : H65(S/N G26014) : Hydraulic : Hydr.-Control, Brake
| 00***98 | Test Socket | 1 |
| 00***98 | Sleeve | 0 |
| 15***40 | Clamping Ring | 0 |
Komatsu : H65(S/N G26014) : Hydraulic : Lines - Control Blocks - Oil Tank
| 00***98 | Half Flange | 16 |
| 00***98 | O-Ring | 8 |
| 18***40 | Hose Fittings | 4 |
Komatsu : H65(S/N G26014) : Hydraulic : Lines - Control Oil Filter
| 00***98 | Union | 1 |
| 00***98 | Union | 1 |
| 00***98 | Sleeve | 4 |
Komatsu : H65(S/N G26014) : Hydraulic : Lines, Hydr. Oil Cooler
| 00***98 | Half Flange | 2 |
| 00***98 | O-Ring | 1 |
| 00***98 | Union | 1 |
Komatsu : H65(S/N G26014) : Hydraulic : Lines :
Komatsu : H65(S/N G26014) : Hydraulic : Lube Lines Pump Bearing
| 00***98 | Socket | 3 |
| 00***98 | Union | 1 |
| 15***40 | Union | 1 |
Komatsu : H65(S/N G26014) : Hydraulic : Manifold
| 15***40 | Test - Screw Coupling | 1 |
| 17***40 | Union | 3 |
| 18***40 | Screw Plug | 1 |
Komatsu : H65(S/N G26014) : Hydraulic : Manifold - Basic Boom
| 00***98 | Half Flange | 6 |
| 00***98 | Half Flanged | 2 |
| 00***98 | O-Ring | 6 |
Komatsu : H65(S/N G26014) : 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 : H65(S/N G26014) : Hydraulic : Pressure Sequence Stage
| 10***65 | O-Ring | 1 |
| 22***40 | Pressure Connecting Stage Assembly | 1 |
| 67***30 | O-Ring | 1 |
Komatsu : H65(S/N G26014) : Hydraulic : Return Line - Pumps - Oil Tank
| 26***40 | Hose Nw 10 Bulk Ware, State Length Required | 0 |
| 37***99 | Union | 2 |
| 37***99 | Pipe Connection | 3 |
Komatsu : H65(S/N G26014) : Hydraulic : Return Line - Valves - Oil Tank
| 00***98 | Union | 3 |
| 00***98 | Sleeve | 4 |
| 15***40 | Clamping Ring | 4 |
Operator'S Cab
Komatsu : H65(S/N G26014) : Operator'S Cab : Boom, Stick
| 34***99 | Pin | 2 |
| 41***40 | Pilot Oil Unit Assembly | 1 |
| 50***98 | O-Ring | 1 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Brake
| 34***40 | Pilot Oil Unit Assembly | 1 |
| 69***22 | Return Spring | 1 |
| 75***73 | Base Assembly. Consist. Of Fig-Nos: 04-12 | 1 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Colour : White
Komatsu : H65(S/N G26014) : Operator'S Cab : Control Boxes And Coverings Foot Rest
| 25***40 | Breather Up To 06 122 | 1 |
| 29***40 | Moulding Material 10x90x120 | 1 |
| 30***99 | Bolt | 25 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Covering
| 08***40 | Rubber Hood Retainer | 1 |
| 15***40 | Tape Roller | 6 |
| 16***40 | Profiled Joint Ca. 6000 Lg. Bulk Ware, State Length Required | 3 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Door Catch
| 00***98 | Es-Pin | 2 |
| 00***98 | Es-Pin | 1 |
| 31***99 | Screw | 2 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Drive
| 41***40 | Pilot Oil Unit Assembly | 1 |
| 69***22 | Return Spring | 2 |
| 75***73 | Compression Spring | 2 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Glazing Compound Glass
| 08***40 | Clamping Section 2800 Lg. (To Fig-Nos. 02,04) Bulk Ware, State Length Required | 1 |
| 08***40 | Filler Section 3000 Lg. Bulk Ware, State Length Required | 1 |
| 16***40 | Profiled Joint Ca. 6000 Lg. Bulk Ware, State Length Required | 1 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Glazing Without Trap Window
| 08***40 | Clamping Section 2800 Lg. (To Fig-Nos. 02,04) Bulk Ware, State Length Required | 3 |
| 08***40 | Filler Section 3000 Lg. Bulk Ware, State Length Required | 6 |
| 24***40 | Rear Side Glass 5 Dick | 2 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Ladder And Gratings
Komatsu : H65(S/N G26014) : Operator'S Cab : Lining
| 29***40 | Lining | 1 |
| 29***40 | Lining | 1 |
| 31***40 | Rubber | 1 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Oil Heater
Komatsu : H65(S/N G26014) : Operator'S Cab : Oil Heating Equipment
| 05***40 | Cable Sleeve | 1 |
| 08***40 | Seal 340 Lg. Bulk Ware, State Length Required | 4 |
| 26***40 | Air Cleaner Mounting | 1 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Operator'S Cab
| 08***40 | Lock Assembly | 1 |
| 08***40 | Dressing Hook | 1 |
| 08***40 | Handle Shell | 1 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Operator'S Cab - Mounting
| 30***99 | Bolt 40mm Lenght | 2 |
| 30***99 | Screw | 14 |
| 30***99 | Bolt | 22 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Operator'S Seat
| 30***99 | Bolt | 2 |
| 42***40 | Operator'S Seat Assembly | 1 |
| 50***98 | Screw | 3 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Operator'S Stand
| 30***40 | Ladder | 1 |
| 30***99 | Screw | 6 |
| 30***99 | Bolt | 1 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Roof Protection
| 25***40 | Hv-Washer | 8 |
| 30***99 | Bolt | 4 |
| 30***99 | Bolt | 1 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Shoes And Mounting Parts Front Window Glass
| 30***99 | Bolt | 12 |
| 34***99 | Lock Washer | 44 |
| 35***40 | Handle, R.H | 1 |
Komatsu : H65(S/N G26014) : Operator'S Cab : Wipe- And Wash System
| 05***40 | Cable Sleeve | 2 |
| 19***40 | Diaphragm Pump | 1 |
| 19***40 | Water Reservoir | 1 |
Superstructure
Komatsu : H65(S/N G26014) : Superstructure : Platform With Counterweight
| 16***40 | Profiled Joint Ca. 6000 Lg. Bulk Ware, State Length Required | 0 |
| 25***40 | Hv-Washer | 4 |
| 28***40 | Bush | 4 |
Swing Gear
Komatsu : H65(S/N G26014) : Swing Gear : Brake
| 30***99 | Bolt | 16 |
| 31***99 | Plug | 1 |
| 31***99 | Bolt | 12 |
Komatsu : H65(S/N G26014) : Swing Gear : Hydr. Motor
| 18***40 | Shaft Seal No Field Repair Item | 1 |
| 31***99 | Screw | 2 |
| 31***99 | Bolt | 4 |
Komatsu : H65(S/N G26014) : Swing Gear : Swing Gear
| 28***40 | Pinion Cover | 1 |
| 30***99 | Screw | 4 |
| 30***99 | Screw | 3 |
Komatsu : H65(S/N G26014) : Swing Gear : Swing Gear Box
| 30***99 | Bolt 100 Lg | 2 |
| 31***99 | Plug | 2 |
| 32***40 | Slew Gear Box Assembly | 1 |
Swing Ring
Komatsu : H65(S/N G26014) : Swing Ring : Lube System
| 00***98 | Union | 24 |
| 15***40 | Clamping Ring | 48 |
| 21***99 | Pipe ? 6x150 mm Bulk Ware, State Length Required | 0 |
Komatsu : H65(S/N G26014) : Swing Ring : Mounting
| 30***99 | Bolt 35 Lg | 2 |
| 34***99 | Lock Washer | 2 |
| 42***40 | Bush | 60 |
Komatsu : H65(S/N G26014) : Swing Ring : Swing Ring
| 22***40 | Lip Type Seal Ng 25 X 9.200 mm Bulk Ware, State Length Required | 1 |
| 24***40 | Lip Type Seal Ng 20 X 9.200 mm Bulk Ware, State Length Required | 1 |
| 31***99 | Bolt (Standard) | 6 |
Undercarriage
Komatsu : H65(S/N G26014) : Undercarriage : -Grease Tensionsing Cylinder
| 18***40 | Stripper | 1 |
| 18***40 | V-Seal | 1 |
| 18***40 | Grease Nipple | 1 |
Komatsu : H65(S/N G26014) : Undercarriage : -Hydr. Motor
| 31***99 | Screw | 6 |
| 32***40 | Hydraulic. Motor, Assembly | 1 |
| 34***99 | Snap Ring | 1 |
Komatsu : H65(S/N G26014) : Undercarriage : -Idler
| 31***99 | Screw Plug | 2 |
| 31***99 | Screw (Standard) | 4 |
| 34***99 | Lock Washer | 4 |
Komatsu : H65(S/N G26014) : Undercarriage : -Nitrogen Tensioner
| 20***40 | Plug | 1 |
| 24***40 | Tappet Rod | 1 |
| 24***40 | Plug | 1 |
Komatsu : H65(S/N G26014) : Undercarriage : -Rotary Joint
| 17***40 | Plug | 4 |
| 20***40 | Screw Plug | 2 |
| 24***40 | Cover | 1 |
Komatsu : H65(S/N G26014) : Undercarriage : -Top Roller
| 34***99 | Pin | 2 |
| 41***40 | Support Roller, Assembly | 1 |
| 69***73 | Snap Ring | 1 |
Komatsu : H65(S/N G26014) : Undercarriage : -Track Group
| 32***40 | Chain 51 Links 51 Glieder (H 65) | 1 |
| 44***40 | Chain 49 Links 49 Glieder (H 55 N) | 1 |
| 49***40 | Pin (Smaller Diameter For Job Site Repair) | 0 |
Komatsu : H65(S/N G26014) : Undercarriage : -Track Roller
| 34***99 | Dowel Sleeve | 2 |
| 41***40 | Track Roller Assembly | 1 |
| 69***73 | Track Roller Body | 1 |
Komatsu : H65(S/N G26014) : Undercarriage : -Traction Transmission
| 18***40 | O-Ring | 1 |
| 25***40 | Lifetime Seal | 1 |
| 30***99 | Screw | 12 |
Komatsu : H65(S/N G26014) : Undercarriage : Drive Protection
| 25***40 | Hv-Washer | 12 |
| 30***99 | Bolt 35 Lg | 22 |
| 31***99 | Washer | 22 |
Komatsu : H65(S/N G26014) : Undercarriage : Hydr. Lines
| 00***98 | Half Flanged | 16 |
| 00***98 | O-Ring | 4 |
| 18***40 | Screw Plug | 1 |
Komatsu : H65(S/N G26014) : Undercarriage : Plates 700 Wide
Komatsu : H65(S/N G26014) : Undercarriage : Undercarriage
| 25***40 | Hv-Washer | 40 |
| 28***40 | Clamping Ring | 1 |
| 29***40 | Track Guide | 4 |
Frequently asked questions
What engine does the Komatsu H65(S/N G26014) have?
The H65 was factory-offered with one of two mechanical diesel engines: a Cummins NTA855-C400 rated 298 kW (400 hp) or a Caterpillar 3406 DITA rated 268 kW (359 hp). Both are pre-electronic, turbocharged inline-six diesels in the 14.0 to 14.6 L displacement range. Which option this specific serial carries is not confirmed in available records.
What is the operating weight of the Komatsu H65(S/N G26014)?
Operating weight runs about 66.3 to 68 t (146,200 to 149,900 lb), depending on which track shoe width is fitted (500 mm, 600 mm, or 700 mm).
What replaced the Komatsu H65?
The H65 was produced roughly 1987 to 2000 as part of the Demag-heritage H-series shovel lineage later absorbed into Komatsu's mining equipment line. No single named direct successor model is documented; the line gave way generally to Komatsu's later electronically monitored hydraulic mining shovels.
What H65(S/N G26014) owners discuss
Is there much owner/mechanic discussion online specifically about the H65(S/N G26014)?
Not much, and it is worth saying so plainly. This is a mining-class shovel built in limited numbers, so it never picked up the hobbyist and rental-fleet chatter that Cat or Komatsu construction excavators get. What little turns up is passing mentions from people who worked on one or owned a pair alongside other Demag-heritage machines, plus parts-sourcing threads. There is no deep technical thread walking through this exact serial range fault by fault. Treat the notes below as general Demag-heritage mining-shovel knowledge applied to this machine, not as a documented consensus on this specific unit.
What is the typical start-up and hydraulic warm-up behavior operators describe for this class of Demag-heritage shovel?
Cold starts are slow to build working pressure until the pump case and oil reach normal temperature, especially in cold climates. Operators are told to idle the engine and cycle the boom, arm, and bucket at low rpm with no load before working the machine hard. Sluggish or jerky cylinder response right after startup is expected on a cold shift and is not by itself a fault. If sluggishness persists once the oil is warm, that points to pump wear or a pilot-pressure problem, not a warm-up issue. Have your dealer verify pump output and pilot pressure before condemning a cylinder or valve.
What undercarriage wear pattern should an owner expect on a machine this size?
At this operating weight class (mid-60-tonne range), track pads, sprocket teeth, idlers, and rollers see heavy abrasive wear, particularly in hard-rock or high-tramming applications. The pattern reported for this class of shovel is uneven wear if the machine spends most of its life digging in one swing arc rather than tramming evenly, and accelerated pin/bushing wear when track tension is left too loose. Central lubrication feeding the swing ring and raceways needs to stay filled and functioning; starved lubrication on the swing circle shows up as increased swing bearing play and noise well before it shows up as a fault code, since this generation of machine has limited onboard diagnostics.
Are there known engine quirks for the diesel fitted to this shovel family?
Reported power figures for the H65 vary across sources (roughly 250 to 298 kW depending on year and source), which lines up with a machine sold over more than a decade with running changes. Sibling machines in the same Demag H-series were factory-fitted with Cummins heavy-duty diesels, and that family is known for being tolerant of hard duty cycles but sensitive to fuel and air filtration in dusty pit conditions. Expect reduced power and increased smoke if air filters are neglected, and expect turbo lag on tramming grades as normal behavior rather than a defect. Confirm the exact engine make and model against the nameplate and engine dataplate for this serial before ordering parts, since running changes occurred across the production span.
What electrical or sensor issues come up on machines of this vintage and class?
This generation is mostly mechanical with limited electronics, so there is no engine-control-module fault-code history to lean on the way a modern excavator has. Reported problems on comparable mechanical mining shovels are basic: corroded connectors and grounds causing intermittent gauge or warning-lamp readings, worn float or pressure switches giving false low-oil or low-fuel warnings, and battery/charging faults after long idle periods between shifts. Because there is little redundancy or self-diagnosis, a warning lamp on this class of machine should be treated as a real mechanical signal until proven otherwise, not dismissed as a sensor glitch. Have your dealer verify any warning lamp with a manual gauge check before returning the machine to service.
What do people say about the swing and hydraulic pump section specifically?
Across Demag-heritage mining shovels generally, the swing drive and main pump section are the components most commonly flagged for rebuild attention on high-hour units, since they run continuously during digging and are harder to inspect than the boom and cylinders. Reported symptoms of a tired pump section include slow simultaneous functions (boom and swing together noticeably slower than either alone) and rising oil temperature under load. Reported symptoms of swing wear include increased backlash felt as a clunk on start/stop of swing and oil in the central lube lines coming back discolored. These are general patterns for this machine class rather than confirmed findings tied to this exact serial, so verify with an oil sample and pressure test rather than assuming from symptoms alone.
What should a buyer check before purchasing a used H65(S/N G26014)?
Given how thin published history is for this exact serial, lean on physical inspection over paperwork. Check engine hours against wear evidence (smoke on startup, oil consumption, blow-by) rather than trusting the hour meter alone on a machine this age. Inspect track pad and bushing wear and ask when the undercarriage was last rebuilt, since undercarriage on this weight class is a major cost item. Pressure-test the main pump section and check swing bearing play by ear and by feel for backlash. Confirm the engine and pump serials match the machine's dataplate, since running changes happened over the production span and mismatched components change parts sourcing. Because onboard diagnostics are minimal, a pre-purchase inspection needs a mechanic physically on the machine, not a remote fault-code pull. Have your dealer verify structural welds on the boom, stick, and undercarriage frame before final purchase, since cracked repairs on machines this age are common and not always obvious from a walk-around.
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 H65(S/N G26014). Related factory variants of the same model family:
H65(S/N G26051)H65(S/N G26058)
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