Komatsumotor grader(no series)
Komatsu GD625A-1(S/N 50001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu GD625A-1 (S/N 50001-UP) is a mechanically governed motor grader in Komatsu's mid-size A-1 grading class, built around the 6D125-1 six-cylinder diesel producing a net 116 kW (155.6 HP) at 2200 rpm through a mechanical inline injection pump and governor, with no electronic engine control. Operating weight runs roughly 13,700 to 14,190 kg (30,200 to 31,280 lb) depending on configuration. The base machine carries a 285 L (75.3 US gal) fuel tank, a drawbar-mounted 360-degree circle with a moldboard blade around 3.7 m (12.1 ft) long and 645 mm (25.4 in) high, and a choice of a rear-mounted ripper or scarifier that are mutually exclusive, plus an optional mid-frame V-type scarifier and an optional blade-float hydraulic accumulator circuit. Within the same family line, later production runs carry the GD625A-1A, GD625A-1B, and GD625A-1C designations, reported to use the same 6D125-1 engine.
Across the A-1 through -1C production runs, the core 6D125-1 powertrain stayed consistent per available documentation; differences trace mainly to serial-range production changes and regional spec packages rather than a documented engine or driveline redesign. A confirmed successor model is not clearly documented; Komatsu's later GD6xx-series graders are the closest parts and service analogue. In the used and parts market, the GD625A-1's value is its mechanical simplicity: no ECM means fewer electronic failure points, and diagnostics rely on physical inspection and OMM procedure rather than a scan tool. Buyers should weigh tandem final-drive chain wear, circle drive condition, and turbocharger health closely, since these are the class's known high-wear points, while the widely used 6D125-1 engine keeps parts and rebuild support relatively accessible.
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 GD625A-1(S/N 50001-UP) specifications
Engine
| Engine model | Komatsu 6D125 diesel, 6-cylinder |
| Displacement | 11.05 L (674.4 cu in) |
| Net power | 116 kW (155.6 HP) @ 2200 rpm |
| Emissions tier | Not documented for this serial range (pre-emissions-tier era grader) - verify with your dealer |
Weights
| Standard operating weight | approx. 13,700 kg (30,200 lb); one source lists 14,190 kg (31,280 lb) - varies by configuration/source |
| Shipping weight | Not separately documented for this serial range |
| Ground pressure | Not published for this serial range |
Dimensions
| Overall length | 8.50 m (27 ft 9 in) |
| Width over tires | 2.41 m (7 ft 9 in) |
| Height to cab top | 3.28 to 3.32 m (10 ft 8 in to 10 ft 11 in) - varies by source |
| Wheelbase | 6.00 m (19 ft 8 in) |
| Tandem axle wheelbase | 1.55 m (5 ft 1 in) |
| Rear axle ground clearance | 0.37 m (1 ft 2 in) |
| Moldboard (blade) width | 3.69 m (12 ft 1 in) |
| Moldboard height | 64.5 cm (25.4 in) |
| Blade base length | 2.62 m (8 ft 7 in) |
| Tire size | 13.00-24, 10PR |
Performance
| Forward gears | 6 forward |
| Maximum forward travel speed | 45 km/h (28 mph) |
| Maximum reverse travel speed | 54.9 km/h (34.1 mph) |
| Turning radius | 6.71 m (22 ft) |
| Articulation angle | 26 degrees |
Service capacities (summary)
| Fuel tank | 285 L (75.3 gal) |
| Hydraulic system | Not documented in available spec sources - verify with your dealer or shop manual |
| Engine oil | Not documented in available spec sources - verify with your dealer or shop manual |
| Cooling system | Not documented in available spec sources - verify with your dealer or shop manual |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
GD625A-1(S/N 50001-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | Not published in accessible factory literature for this serial range — verify with dealer or O&M manual fluid chart | Komatsu Genuine Diesel Engine Oil (EO). SAE 15W-40 for normal ambient use; SAE 10W-30 approved for cold-climate starts. Match viscosity grade to ambient temperature per the O&M manual's oil-viscosity chart. |
| Cooling system | Not published in accessible factory literature for this serial range — verify with dealer or O&M manual fluid chart | Komatsu Super Coolant (AF-NAC), factory pre-mixed, year-round type. Do not mix coolant types; keep concentration within the factory-specified range for freeze/boil protection. |
| Fuel tank | 285 L (75.3 US gal) | ASTM D975 No. 2-D diesel fuel for normal ambient; No. 1-D diesel recommended in cold climates to prevent gelling. |
| Transmission / powertrain case | Not published in accessible factory literature for this serial range — verify with dealer or O&M manual fluid chart | Komatsu Genuine Powertrain Oil (TO), viscosity grade selected per ambient temperature range shown in the O&M manual's lubricant chart. |
| Tandem/final drive cases (each side) | Not published in accessible factory literature for this serial range — verify with dealer or O&M manual fluid chart | Komatsu Genuine Powertrain Oil (TO), same specification family as the transmission case on this grader series; confirm grade against the O&M manual chart. |
| Hydraulic system and tank | Not published in accessible factory literature for this serial range — verify with dealer or O&M manual fluid chart | Komatsu Genuine Hydraulic Oil (HO). Grade selected by ambient temperature — heavier viscosity (e.g. HO46-HM class) for warm climates, lighter viscosity (e.g. HO32-HM class) for cold climates, per the O&M manual chart. |
| Grease (chassis pins, bushings, circle, wheel bearings) | Spec only — no fill volume applicable | Komatsu Genuine Grease G2-LI, lithium EP multipurpose grease (NLGI No. 2 equivalent). Rated service range roughly -20 C to 120 C (-4 F to 248 F); single grease covers all chassis grease points on this machine. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu GD625A-1(S/N 50001-UP) 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 GD625A-1(S/N 50001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
With no ECM or scan-tool diagnostics on the 6D125-1's mechanical injection, oil analysis is the main early-warning tool. Sample engine oil, Komatsu Genuine Powertrain Oil from the transmission and tandem final drives, and hydraulic oil at each interval change to track metal particulate from chain, gear, and circle wear before it reaches failure. Check Super Coolant AF-NAC condition for inhibitor depletion. Watch hydraulic oil cleanliness closely, since circle drift and blade-float accumulator faults on this grader usually start as contamination, not component failure.
Corrective & Common Repairs
Common corrective work centers on the circle drive, drawbar, and hydraulic drift points. Worn circle wear plates and shims cause blade chatter and slop; the drawbar ball-and-socket joint wears and needs shimming or replacement. Blade-float accumulator circuit leaks show up as blade drift when the float function is engaged. On the 6D125-1, turbo dust ingestion is a known issue in dry, dusty sites and calls for turbocharger cleaning or rebuild. Mechanical governor and injection pump linkage also need periodic adjustment as they lose calibration with use.
Overhaul & Rebuild Points
The tandem case final-drive chains and sprockets are the highest-wear driveline components on this class of grader and are the main rebuild item at high hours. Circle gear and mesh teeth wear with age and need inspection at overhaul. Turbocharger cores on the 6D125-1 typically need rebuild before a full engine overhaul, especially after chronic dust ingestion. At major engine overhaul, expect injector, liner, and bearing replacement; transmission clutch packs and hydraulic pump and motor wear also become overhaul-stage items past mid-life hours.
Seasonal & Environment Servicing
Switch engine oil grade seasonally: 15W-40 Komatsu Genuine Diesel Engine Oil for normal conditions, 10W-30 in cold climates for cold-start protection. Check Super Coolant AF-NAC freeze protection before winter. In wet or humid sites, drain the fuel water separator more often than the standard interval. In dry, dusty terrain, service the air cleaner element more frequently to protect the turbocharger from dust ingestion. Shorten grease intervals on circle, drawbar, and blade-lift pins when working in mud or heavy moisture to prevent grease washout.
GD625A-1(S/N 50001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 07000-02080 | O-Ring,Hydraulic Oil Filter | Hydraulic service | Check fitment → |
| ND090438-0420 | Shim? 1.9mm,Element Holder | Scheduled service item | Check fitment → |
| 23B-950-2170 | Filter | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
GD625A-1(S/N 50001-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| Engine oil pressure warning lamp (red, oil-can symbol) | Engine lubrication pressure has dropped below the safe minimum | Low oil level, clogged oil filter, worn oil pump, or a faulty pressure switch/sender | Stop the engine immediately, check oil level and filter condition before restarting |
| Coolant temperature warning lamp (red, thermometer symbol) | Engine coolant temperature has exceeded the safe operating range | Low coolant level, clogged radiator or screen, loose/broken fan belt, or a faulty thermostat | Reduce load and idle the engine down, check coolant level and radiator screen once safe; do not remove the radiator cap while hot |
| Charge warning lamp (red, battery symbol) | Alternator is not charging the battery circuit | Loose or broken alternator belt, faulty alternator, or a wiring/connector fault | Check belt tension and wiring connections, have the alternator tested if the lamp stays on with the engine running |
| Air cleaner restriction indicator | Intake air filter restriction has reached the service limit | Clogged or saturated air filter element | Clean or replace the filter element and reset the restriction indicator |
| Parking brake warning lamp (red) | Parking brake is applied | Brake lever left engaged, or a parking brake switch/circuit fault | Confirm parking brake lever position before attempting to move the machine; check the switch if the lamp stays on with the brake released |
| Torque converter oil temperature warning lamp (red) | Torque converter oil temperature has exceeded the safe operating range | Low torque converter oil level, clogged oil cooler, or prolonged high-load/stall operation | Reduce load and let the engine idle to cool the oil, then check torque converter oil level and cooler condition |
| Brake (accumulator) oil pressure warning lamp (red) | Hydraulic brake accumulator pressure has dropped below the safe minimum | Low hydraulic oil level, charging pump fault, or loss of accumulator pre-charge | Stop the machine in a safe location, do not continue operating until pressure is restored, check hydraulic oil level first |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
GD625A-1(S/N 50001-UP) attachments & work tools
Moldboard blade
Standard moldboard runs roughly 3.7 m (12.1 ft) long by approximately 610-660 mm (24-26 in) high, fabricated high-tensile steel with bolt-on replaceable cutting edges and end bits. Bolt-on end-of-blade extensions are a common option on this size class for added reach in ditching and windrow work.
Circle and drawbar
Blade mounts to a drawbar-mounted circle giving 360-degree rotation, with hydraulic blade lift, tilt, and side-shift. Drawbar is an A-shaped, press-formed and welded box structure typical of this grader class, giving the moldboard its full range of grading, banking, and ditching positions.
Rear-mounted scarifier
Rear-frame scarifier attaches behind the tandem for surface ripping ahead of grading; shank holders accept replaceable points and give a working width close to the machine's rear track width. Shares the rear mounting/pusher-plate provision used by the rear ripper, so only one of the two is typically fitted at a time.
Mid-mounted V-scarifier
An optional mid-frame V-type scarifier mounts between the front axle and cab, giving a narrower working width than the rear unit and letting operators scarify directly in the blade's path. Shank spacing and point pattern are set by the holder bar, common to this grader class.
Rear ripper
A rear-mounted ripper assembly (mutually exclusive with the rear scarifier on the same mount) carries adjustable-spacing shank holders for penetration into compacted or frost-affected ground, with maximum ripping depth in the class-typical 400-450 mm (about 1.3-1.5 ft) range. Shares the same rear hitch/pusher plate as the scarifier.
Front-frame attachment provision
Front frame carries kit provision for a single-function front attachment (for example a front blade or dozer-type blade), consistent with this grader size class; the GD625A-1 itself is documented mainly with its standard center-mounted moldboard, so front-attachment fitment should be verified with a dealer for this exact serial range.
Snow equipment
Aftermarket snow wings and front snow blades are offered by attachment specialists sized to fit Komatsu/Galion-pattern graders in this class, bolting to the front frame or moldboard for winter road maintenance work; these are third-party fitments rather than a factory-cataloged Komatsu option for this serial range.
Blade float / hydraulic circuit option
Hydraulic piping for a blade accumulator line with blade float function is documented for this grader family, letting the moldboard follow ground contour with reduced down-pressure. Availability as factory-fit vs. field-installed kit varies by configuration/series.
All GD625A-1(S/N 50001-UP) assemblies by section
Every catalogued assembly group for the Komatsu GD625A-1(S/N 50001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
6d125-1y Engine S/N 10276-Up
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Air Cleaner And Mounting
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 6 |
| 01***16 | Washer,Radio Controlled Slag Handling | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Air Cleaner And Mounting (High Altitude Spec.)
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Air Compressor (Inner Parts)(#10276-40172)
| 61***10 | Air Compressor Ass'Y,(See Fig.0711) | 1 |
| DK***20 | Connecting Rod A | 1 |
| DK***00 | Spring,Delivery Valve | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Air Compressor (Inner Parts)(#40173-)
| 61***11 | Air Compressor Ass'Y,(See Fig.0711a) | 1 |
| DK***20 | Connecting Rod A | 1 |
| DK***90 | Washer,Air Compressor | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Air Compressor And Piping
| 07***12 | Gasket,(Without Air Compressor Type) (K2) | 4 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 8 |
| 07***16 | Gasket,Air Compressor Piping | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Air Compressor Gasket Kit(#24453-)
| 07***25 | O-Ring,Injection Pump Mounting | 1 |
| 07***12 | Gasket,(Without Air Compressor Type) (K2) | 4 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 8 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Air Intake Manifold And Connection
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 14 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 5 |
| 01***60 | Bolt, Mount Tube To Switch Pump | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Air Intake Manifold And Connection (High Altitude Spec.)
| 01***10 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 14 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 5 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Alternator (35a) (With Hardening Pulley) (Inner Parts)
| 60***20 | Alternator A. (35a),(With Hardening Pulley) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
| KD***80 | Collar | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Alternator (50a) (Inner Parts)
| 60***30 | Alternator A. (50a),(With Non Hardening Pulley) | 1 |
| SD***X0 | Pulley,Non Hardening | 1 |
| SD***X0 | Coil Assembly | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Alternator (50a) (With Hardening Pulley) (Inner Parts)
| 60***60 | Alternator A. (50a),(With Hardening Pulley) | 1 |
| SD***X0 | Coil Assembly | 1 |
| SD***X0 | Washer | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Alternator And Mounting (35a) (With Hardening Pulley)
| 01***90 | Bolt, Fan Mounting | 1 |
| 01***30 | Bolt | 1 |
| 01***23 | Washer,(A)(W/After Cooler)(S6d155-4b) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Alternator And Mounting (50a)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***30 | Bolt | 1 |
| 01***23 | Washer,(A)(W/After Cooler)(S6d155-4b) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Camshaft
| 01***22 | Bolt | 2 |
| 04***25 | Key, Plain Woodruff | 1 |
| 04***12 | Ring,Snap (For Ripper) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Cooling Fan And Mounting
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 22 |
| 01***40 | Bolt, Mount Master Brake Cylinder | 2 |
| 01***95 | Bolt,(For 2nd Travel Speed) (Op) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Cooling Fan And Mounting (Suction Fan)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 16 |
| 01***40 | Bolt, Mount Master Brake Cylinder | 2 |
| 01***50 | Bolt,(With Service Valve R.H.) | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Corrosion Resistor And Piping
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 5 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 1 |
| 02***25 | Bolt,(Cold Weather Spec.) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Crankshaft
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 6 |
| 01***30 | Screw | 1 |
| 01***35 | Screw | 5 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Cylinder Block
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***12 | Bolt,(Without Air Compressor Type) | 2 |
| 01***16 | Washer,Radio Controlled Slag Handling | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Cylinder Block Cover
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***00 | Bolt, Mount Back-Up Alarm | 2 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Cylinder Block Gasket Kit
| 07***20 | O-Ring,Relief Valve | 1 |
| 07***15 | O-Ring,(For Low Speed) (D40pf) | 1 |
| 07***25 | O-Ring,Injection Pump Mounting | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Cylinder Head Gasket Kit
| 02***43 | O-Ring,Water Manifold | 6 |
| 07***65 | O-Ring,Cylinder Block | 6 |
| 07***12 | Gasket,Mechanical Pump Piping | 13 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Cylinder Head(#10276-24780)
| 04***20 | Pin,Dowel (Welded) | 2 |
| 61***30 | Sleeve,Holder | 1 |
| 61***20 | Cotter, Valve | 48 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Cylinder Head(#24781-)
| 04***20 | Pin,Dowel (Welded) | 2 |
| 61***30 | Sleeve,Holder | 1 |
| 61***20 | Cotter, Valve | 48 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Exhaust Manifold And Mounting
| 01***80 | Bolt, Mount Strainer Flange | 18 |
| 07***08 | Plug,(Without Auto Priming System) | 1 |
| 61***20 | Spacer,(For Shipping) | 18 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Exhaust Manifold And Turbocharger (High Altitude Spec.)
| 01***80 | Bolt, Mount Strainer Flange | 2 |
| 01***00 | Bolt (M10-1.50x100) | 16 |
| 01***45 | Screw | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Flywheel And Flywheel Housing
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Front Cover And Front Support
| 01***25 | Bolt,(Without Auto Priming System) | 6 |
| 01***60 | Screw | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Filter And Piping
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***16 | Washer,Radio Controlled Slag Handling | 2 |
| 07***12 | Gasket,Mechanical Pump Piping | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Injection Pump (Coupling) (High Altitude Spec.) (Inner Parts)
| ND***50 | Bolt | 1 |
| ND***40 | Bolt | 2 |
| ND***61 | Bolt | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Injection Pump (Coupling) (Inner Parts)
| ND***50 | Bolt | 1 |
| ND***40 | Bolt | 2 |
| ND***61 | Bolt | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Injection Pump (Feed Pump) (High Altitude Spec.) (Inner Parts)
| ND***61 | Feed Pump Ass'Y | 1 |
| ND***40 | Washer? 1mm,Plate | 1 |
| ND***70 | Washer,Union | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Injection Pump (Feed Pump) (Inner Parts)
| ND***61 | Feed Pump Ass'Y | 1 |
| ND***40 | Washer? 1mm,Plate | 1 |
| ND***70 | Washer,Union | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Injection Pump (Governor) (1/2) (High Altitude Spec.) (Inner Parts)
| ND***40 | Plate,Thrust | 1 |
| ND***10 | Governor Ass'Y | 1 |
| ND***40 | Plug,Screw | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Injection Pump (Governor) (1/2) (Inner Parts)
| ND***40 | Plate,Thrust | 1 |
| ND***10 | Governor Ass'Y | 1 |
| ND***40 | Plug,Screw | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Injection Pump (Governor) (2/2) (High Altitude Spec.) (Inner Parts)
| ND***80 | Pin,Stop | 1 |
| ND***20 | Washer? 1.0mm,Cover Plate | 2 |
| ND***30 | Lever,Adjusting | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Injection Pump (Governor) (2/2) (Inner Parts)
| ND***80 | Pin,Stop | 1 |
| ND***20 | Washer? 1.0mm,Cover Plate | 2 |
| ND***30 | Lever,Adjusting | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Injection Pump (Pump) (1/2) (High Altitude Spec.) (Inner Parts)
| 61***10 | Injection Pump A | 1 |
| 61***11 | Injection Pump Ass'Y | 1 |
| ND***50 | Ring,Adjust | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Injection Pump (Pump) (1/2) (Inner Parts)
| 61***70 | Injection Pump A | 1 |
| 61***71 | Injection Pump A | 1 |
| ND***50 | Ring,Adjust | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Injection Pump (Pump) (2/2) (High Altitude Spec.) (Inner Parts)
| ND***70 | O-Ring | 6 |
| ND***71 | Rack,Control | 1 |
| ND***50 | Seat,Spring? Lower | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Injection Pump (Pump) (2/2) (Inner Parts)
| ND***70 | O-Ring | 6 |
| ND***71 | Rack,Control | 1 |
| ND***50 | Seat,Spring? Lower | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Injection Pump And Piping
| 01***75 | Bolt,(See Fig.0142) | 4 |
| 01***30 | Bolt | 4 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Injection Pump And Piping (High Altitude Spec.)
| 01***75 | Bolt,(See Fig.0142) | 4 |
| 01***30 | Bolt | 1 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Fuel Nozzle And Spill Pipe
| 01***45 | Bolt, Divider Valve Mounting | 12 |
| 07***65 | O-Ring,Cylinder Block | 6 |
| 07***12 | Gasket,Mechanical Pump Piping | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Heater Switch
| 60***70 | Switch,Air Intake Heater | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Lubricating Oil Cooler
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 13 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Lubricating Oil Filter And Mounting
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***40 | Bolt, Mount Master Brake Cylinder | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Lubricating Oil Piping
| 01***60 | Bolt, Mount Tube To Switch Pump | 2 |
| 01***16 | Washer,Radio Controlled Slag Handling | 7 |
| 04***12 | Ring, Snap | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Lubricating Oil Pump And Suction Pipe
| 01***25 | Bolt,(Without Auto Priming System) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Muffler And Mounting
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
| 01***30 | Bolt, Mount Pump | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Muffler And Mounting (High Altitude Spec.)
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
| 01***55 | Bolt,(For Suction? Reversible Fan) | 4 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Oil Pan
| 01***60 | Bolt (M10-1.50x60) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 31 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 7 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Oil Pan (With Heater)
| 01***60 | Bolt (M10-1.50x60) | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 31 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Piston And Connecting Rod(#20091-)
| 02***13 | Pin, Dowel | 2 |
| 04***18 | Ring, Snap | 12 |
| 61***32 | Piston Ring Ass'Y | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Rocker Arm And Housing
| 01***08 | Nut,R.H. Thread | 12 |
| 01***16 | Washer,Radio Controlled Slag Handling | 40 |
| 61***10 | Housing, Rocker Lever | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Rocker Arm Housing Cover
| 01***16 | Washer,Radio Controlled Slag Handling | 24 |
| 61***11 | Cover,Head? No.2?3?4?5?6 | 6 |
| 61***10 | Gasket,Cylinder Head Cover | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Starting Motor (11kw) (Inner Parts)
| 60***70 | Starting Motor Ass'Y,(11kw) | 1 |
| 60***30 | Starting Motor Ass'Y,(11kw) | 1 |
| SD***00 | Metal | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Starting Motor And Mounting (11kw)
| 01***40 | Bolt,(With Center Guard) | 3 |
| 66***10 | Gasket,Starting Motor | 1 |
| (6***0) | Starting Motor Ass'Y,(11kw) (See Fig.0661) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Turbocharger (High Altitude Spec.) (Inner Parts)
| 61***00 | Turbocharger Ass'Y,(Tv7705) | 1 |
| GA***85 | V-Band Ass'Y | 1 |
| GA***85 | V-Band | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Turbocharger Lubricating Oil Piping (High Altitude Spec.)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Water Manifold And Thermostat
| 02***43 | O-Ring,Water Manifold | 6 |
| 07***12 | Washer, Gasket,(Without Thermo Sensor) (K1) | 1 |
| 07***08 | Plug,(Without Auto Priming System) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Water Pump And Mounting
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 6 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Water Pump Gasket Kit
| 07***15 | O-Ring,(For Low Speed) (D40pf) | 1 |
| 61***61 | Gasket (K2?K6) | 1 |
| 61***10 | Seal,Water (K6) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : 6d125-1y Engine S/N 10276-Up : Water Separator And Mounting
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 2 |
Control System
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Accelerator Pedal
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 2 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Air Dryer
| 23***70 | Air Dryer Ass'Y,(Dr-3u) | 1 |
| 23***00 | Valve Body Ass'Y | 1 |
| 23***70 | Heater | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Air Horn
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Articulation Indicator
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***12 | Screw,(With Articulate Indicator) | 4 |
| 01***07 | Seat (Welded) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Bank Cutting Control Piping
| 01***25 | Bolt,(For Automatic) | 4 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Bank Pin
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 2 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Upper) | 1 |
| 01***65 | Stud | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Brake Pedal
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Brake Piping (1/4) (With Air Dryer)
| 01***75 | Bolt,(For Shipping) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Brake Piping (1/4) (Without Air Dryer)
| 01***75 | Bolt,(For Shipping) | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 2 |
| 07***34 | O-Ring,(For 2-Actuater Attachment) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Brake Piping (2/4)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 8 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Brake Piping (3/4)
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Brake Piping (4/4)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 10 |
| 01***10 | Nut (K10) | 2 |
| 01***36 | Wahser-Spring, Washer,Spring (Without Towing Winch) | 10 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Brake Valve
| 23***90 | Valve Ass'Y,Dual Brake | 1 |
| 23***50 | Piston,Relay | 1 |
| 23***50 | Piston,Upper | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Console Box (1/2)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Console Box (2/2)
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
| 01***25 | Bolt | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 3 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Front Attachment Control Lever
| 01***05 | Nut,L.H. Thread (D31s) | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Fuel Control Lever
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 3 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Hydraulic Control Lever (1/2)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 4 |
| 01***25 | Bolt,(For Automatic) | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 3 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Hydraulic Control Lever (2/2)
| 01***25 | Bolt,(For Automatic) | 6 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 3 |
| 01***16 | Screw | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Inching Pedal
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Parking Brake Control Lever
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 3 |
| 01***45 | Bolt, Mounting Bracket To Radiator (Top) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Rear Attachment Control Lever
| 01***05 | Nut,L.H. Thread (D31s) | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Steering Wheel
| 01***11 | Nut - Mounting | 1 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
| 01***42 | Washer,Spring (For Pedal Steering), Washer-Spring | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Transmission Control Lever
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 8 |
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Control System : Transmission Control Linkage
| 01***14 | Bolt | 4 |
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 2 |
Engine Related Parts And Electrical System
Komatsu : Gd625a-1(S/N 50001-Up) : Engine Related Parts And Electrical System : Battery
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 16 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 8 |
Komatsu : Gd625a-1(S/N 50001-Up) : Engine Related Parts And Electrical System : Electrical System (1/2) (Rear)
| 01***10 | Bolt,(With Auto Emergency Steering) | 1 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Engine Related Parts And Electrical System : Electrical System (2/2) (Rear)
| 01***10 | Screw,(With Air Conditioner) | 1 |
| 01***12 | Screw,(With Articulate Indicator) | 8 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 9 |
Komatsu : Gd625a-1(S/N 50001-Up) : Engine Related Parts And Electrical System : Electrical System (Battery Line)
| 01***20 | Bolt,(With Auto Emergency Steering) | 1 |
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Engine Related Parts And Electrical System : Electrical System (Center)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 3 |
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Engine Related Parts And Electrical System : Electrical System (Front)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 5 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
Komatsu : Gd625a-1(S/N 50001-Up) : Engine Related Parts And Electrical System : Engine And Transmission Mounting Parts
| 01***40 | Bolt,(With Service Valve R.H.) | 12 |
| 01***40 | Bolt,R.H. Outside And L.H. Inside, Bolt | 8 |
| 01***50 | Bolt,(For Tbg/Abe Spec.) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Engine Related Parts And Electrical System : Fuel Piping
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 2 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 10 |
Komatsu : Gd625a-1(S/N 50001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Hydraulic Tank
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For High High Lift) | 1 |
| 01***50 | Bolt,(For Tbg/Abe Spec.) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Engine Related Parts And Electrical System : Instrument Panel
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 4 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Engine Related Parts And Electrical System : License Plate Lamp
| 08***10 | Bulb? 12w,(For Japan) | 1 |
| 08***00 | Lamp Ass'Y,License (For Japan) | 1 |
| 23***30 | Bracket (Welded) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Engine Related Parts And Electrical System : Monitor Panel
| 01***12 | Screw,(With Articulate Indicator) | 4 |
| 01***12 | Screw | 8 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Engine Related Parts And Electrical System : Radiator
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 14 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***80 | Bolt | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Engine Related Parts And Electrical System : Radiator Piping
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***50 | Bolt,(With Service Valve R.H.) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 5 |
Komatsu : Gd625a-1(S/N 50001-Up) : Engine Related Parts And Electrical System : Rear Work Lamp
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
| 01***16 | Washer,Radio Controlled Slag Handling | 2 |
Frame And Guard
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Air Conditioner (1/6)
| 04***20 | Ring, Snap | 1 |
| 14***00 | Compressor Ass'Y | 1 |
| 14***10 | Compressor Ass'Y | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Air Conditioner (2/6)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 8 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Air Conditioner (3/6)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 3 |
| 01***12 | Bolt,(With Cylinder Cover) | 2 |
| 01***14 | Bolt,(With Canopy) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Air Conditioner (4/6)
| 01***10 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 2 |
| 23***80 | Relay,Air Conditioner | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Air Conditioner (5/6)
| 01***10 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 4 |
| 01***10 | Screw,(For Wiper Switch Earth) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Air Conditioner (6/6)
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Car Heater (1/4)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 6 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Car Heater (2/4)
| 01***10 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 4 |
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 3 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Car Heater (3/4)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 6 |
| 01***12 | Screw,(Additional Sun Visor) | 4 |
| 01***16 | Seat,(For Desiccant Type) (Welded) | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Car Heater (4/4)
| 23***80 | Wire Ass'Y | 1 |
| 23***20 | Switch,Car Heater | 1 |
| 23***20 | Resistor | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Main Frame
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 28 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 8 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Operator'S Compartment (1/3)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***40 | Bolt, Mount Master Brake Cylinder | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Operator'S Compartment (2/3)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 2 |
| 01***25 | Bolt,(For Automatic) | 8 |
| 01***30 | Bolt | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Operator'S Compartment (3/3)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 14 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 18 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Operator'S Seat (1/2)
| 01***45 | Bolt,(S6d155-4b) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 7 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Operator'S Seat (2/2)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***10 | Nut,(Without Air Conditioner) | 5 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Push Plate
| 01***10 | Bolt (Op) | 6 |
| 01***19 | Nut - M24 | 6 |
| 01***60 | Washer,(Without Rops Guard? Canopy) | 12 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Radiator Guard And Engine Hood
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 21 |
| 01***20 | Screw,(Not Used With Ventilator) | 12 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 12 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Rops
| 01***85 | Bolt | 8 |
| 01***08 | Screw, Mount Damper To Shaft | 4 |
| 01***60 | Washer,(Without Rops Guard? Canopy) | 8 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Side Panel
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 10 |
| 01***10 | Screw,(With Air Conditioner) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Steel Cab (1/6)
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Steel Cab (2/6)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 4 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 22 |
| 01***25 | Bolt,Without Revolution Sensor | 8 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Steel Cab (3/6)
| 01***16 | Bolt (With Air Heater & Conditioner) | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Steel Cab (4/6)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Steel Cab (5/6)
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***10 | Screw,(For Wiper Switch Earth) | 3 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Steel Cab (6/6)
| 01***06 | Screw | 21 |
| 23***70 | Wire | 2 |
| 23***10 | Wire Ass'Y | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Frame And Guard : Transmission Under Guard
| 01***40 | Washer | 4 |
| 23***50 | Pin,Cotter | 4 |
| 23***10 | Guard,Under | 1 |
Hydraulic System
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Blade Lift Cylinder
| 01***75 | Bolt,(Reinforced Type) | 2 |
| 01***16 | Nut - M20 | 2 |
| 01***60 | Washer,(For Large Size Tire) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Blade Side Shift Cylinder
| 07***80 | O-Ring,Hydraulic Oil Filter | 1 |
| 07***75 | O-Ring,Cylinder Head | 1 |
| 07***75 | Ring,Back-Up (Kit) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Drawbar Shift Cylinder
| 01***75 | Bolt,(Reinforced Type) | 4 |
| 01***16 | Nut - M20 | 4 |
| 01***60 | Washer,(For Large Size Tire) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Flow Divider Valve
| 23***10 | Body | 1 |
| 23***30 | O-Ring | 2 |
| 23***40 | Spring | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Control Valve? L.H. (1/2) (5-Spool)
| 23***10 | Seal Kit | 1 |
| 23***50 | Front Cover Ass'Y | 1 |
| 23***70 | Plug | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Control Valve? L.H. (2/2) (5-Spool)
| 23***90 | Plug | 1 |
| 23***20 | Plug | 1 |
| 23***30 | Orifice | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Control Valve? R.H. (5-Spool)
| 23***10 | Seal Kit | 1 |
| 23***10 | End Cover Ass'Y | 1 |
| 23***00 | Control Valve Ass'Y | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Filter
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 8 |
| 07***65 | O-Ring,(F5350-62a0 -14 ) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Motor
| 23***10 | Seal,Dust (K12) | 1 |
| 23***30 | O-Ring (K13) | 3 |
| 23***40 | Seal,Oil | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (1/2) (Blade Shift Cylinder Line)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 1 |
| 23***00 | Hose,R.H | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (1/2) (Circle Revolution Motor Line)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (1/2) (Drawbar Shift Cylinder Line)
| 01***55 | Bolt,(10m) | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 2 |
| 07***34 | O-Ring,(For Without Brake Assistor) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (1/2) (Power Tilt Cylinder Line)
| 01***55 | Bolt,(10m) | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 2 |
| 07***34 | O-Ring,(For Without Brake Assistor) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (2/2) (Blade Shift Cylinder Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
| 07***34 | O-Ring,(For Without Brake Assistor) | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (2/2) (Circle Revolution Motor Line)
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (2/2) (Drawbar Shift Cylinder Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***50 | Bolt,(With Service Valve R.H.) | 1 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 3 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (2/2) (Power Tilt Cylinder Line)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***45 | Bolt, Mounting Bracket To Radiator (Top) | 3 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (Articulate Cylinder Line)
| 01***60 | Bolt,(For Japan And Sweden) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (Blade Lift Cylinder Line)
| 01***55 | Bolt,(10m) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***50 | Bolt,(With Service Valve R.H.) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (Control Valve To Tank)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***11 | Nut,(With Under Mirror) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (Flow Divider Valve To Control Valve)
| 01***25 | Bolt,Without Revolution Sensor | 5 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 4 |
| 01***11 | Nut,(With Under Mirror) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (For Rear Attachment)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***40 | Bolt, Mount Master Brake Cylinder | 1 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (Leaning Cylinder Line)
| 01***55 | Bolt,(10m) | 2 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 1 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (Ripper Cylinder Line)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***55 | Bolt,(10m) | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 3 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (Scarifier Cylinder Line)
| 01***55 | Bolt,(10m) | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 2 |
| 07***34 | O-Ring,(For Without Brake Assistor) | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Piping (Tank To Pump To Flow Divider Valve)
| 01***35 | Bolt,(For Position Fixing) | 4 |
| 01***90 | Bolt, Priority Valve Mounting | 3 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Hydraulic Pump (For Work Equipment And Steering)
| 23***00 | Pump Ass'Y | 1 |
| KB***08 | Bolt | 8 |
| KB***03 | Service Kit,Work Equipment Pump | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Pilot Check Valve (For Articulate)
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 5 |
| 07***14 | Ring,Back-Up (Kit), Ring,Back-Up; Komatsu S/N 20501-22940 - Was 07001-02014 | 3 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Pilot Check Valve (For Blade Lift? L.H.)(#50001-50014)
| 07***10 | O-Ring,Plate | 1 |
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 3 |
| 07***10 | Ring,Back-Up | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Pilot Check Valve (For Blade Lift? L.H.)(#50015-)
| 07***10 | O-Ring,Plate | 1 |
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 3 |
| 07***10 | Ring,Back-Up | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Pilot Check Valve (For Blade Lift? R.H.)(#50001-50014)
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 1 |
| 07***14 | Ring,Back-Up (Kit), Ring,Back-Up; Komatsu S/N 20501-22940 - Was 07001-02014 | 1 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Pilot Check Valve (For Blade Lift? R.H.)(#50015-)
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 2 |
| 07***14 | Ring,Back-Up (Kit), Ring,Back-Up; Komatsu S/N 20501-22940 - Was 07001-02014 | 1 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Pilot Check Valve (For Leaning And Drawbar Shift)
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 6 |
| 07***14 | Ring,Back-Up (Kit), Ring,Back-Up; Komatsu S/N 20501-22940 - Was 07001-02014 | 4 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Pilot Check Valve (For Power Tilt)
| 07***10 | O-Ring,Plate | 1 |
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 2 |
| 07***10 | Ring,Back-Up | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Pilot Check Valve (For Ripper)
| 07***10 | O-Ring,Plate | 1 |
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 3 |
| 07***10 | Ring,Back-Up | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Pilot Check Valve (For Scarifier)
| 07***10 | O-Ring,Plate | 1 |
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 3 |
| 07***10 | Ring,Back-Up | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Power Tilt Cylinder
| 04***20 | Ring, Snap | 4 |
| 07***80 | O-Ring,Hydraulic Oil Filter | 1 |
| 07***75 | O-Ring,Cylinder Head | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Ripper Cylinder
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
| 07***95 | O-Ring,(Y1620-11a0a-12) | 1 |
| 07***95 | Ring,Back-Up? Cylinder Head | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Scarifier Cylinder
| 07***90 | O-Ring,(Dk029369-0020) (K2) | 1 |
| 07***85 | O-Ring,(For Snow Removing) | 1 |
| 07***85 | Ring,Back-Up? Head | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Hydraulic System : Swivel Joint
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***36 | Wahser-Spring, Washer,Spring (Without Towing Winch) | 2 |
| 07***65 | O-Ring,(F5350-62a0 -14 ) | 2 |
Mark Plate? Tool And Kit
Komatsu : Gd625a-1(S/N 50001-Up) : Mark Plate? Tool And Kit : Marks And Plates (English)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 07***64 | Plate? Caution,Brake Assistor Cylinder | 1 |
| 09***00 | Plate? Instruction,Fuel | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Mark Plate? Tool And Kit : Service Kit
| 07***16 | O-Ring,Suction And Relief Valve | 1 |
| 07***05 | O-Ring, Steering Pump Mounting | 1 |
| 07***45 | O-Ring,Cover | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Mark Plate? Tool And Kit : Tables
| 09***80 | Case,(Except Japan) | 3 |
| 23***20 | Table,Tool | 1 |
| 23***30 | Table,Accessory | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Mark Plate? Tool And Kit : Tool
| 01***80 | Bolt,(With Scarifier) | 1 |
| 07***70 | Tube,Vinyl | 1 |
| 07***00 | Pump,Grease | 1 |
Power Train
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Articulate Cylinder
| 07***90 | O-Ring,(Dk029369-0020) (K2) | 1 |
| 07***85 | O-Ring,(For Snow Removing) | 1 |
| 07***85 | Ring,Back-Up? Head | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Differential Lock Piping (1/2)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 01***36 | Wahser-Spring, Washer,Spring (Without Towing Winch) | 2 |
| 07***70 | O-Ring (Kit) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Differential Lock Piping (2/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 4 |
| 01***60 | Bolt, Mount Tube To Switch Pump | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Drive Shaft
| 01***55 | Bolt | 8 |
| 01***36 | Wahser-Spring, Washer,Spring (Without Towing Winch) | 8 |
| 23***00 | Drive Shaft Ass'Y | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Final Drive Case (1/2)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 8 |
| 01***80 | Bolt, Mount Tubes To Switch And Work Pumps | 8 |
| 01***60 | Bolt,(For Ripper) | 44 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Final Drive Case (2/2)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 20 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Final Drive Gear (1/2)
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 8 |
| 01***40 | Bolt,(With Service Valve R.H.) | 3 |
| 01***45 | Bolt, Mounting Bracket To Radiator (Top) | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Final Drive Gear (2/2)
| 01***45 | Bolt, Mounting Bracket To Radiator (Top) | 6 |
| 04***30 | Ring,Snap? Sprocket | 2 |
| 06***15 | Bearing | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Front Axle (1/3)
| 01***45 | Bolt | 2 |
| 01***35 | Bolt | 1 |
| 01***13 | Nut | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Front Axle (2/3)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 6 |
| 01***55 | Bolt | 20 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Front Axle (3/3)
| 01***35 | Bolt,(With Rops) | 4 |
| 01***10 | Nut,Lock | 4 |
| 01***23 | Nut | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Hydraulic Pump (1/2) (For Transmission And Differential Lock)
| 23***00 | Pump Ass'Y | 1 |
| 23***01 | Pump Ass'Y | 1 |
| KB***51 | Washer,Spring | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Hydraulic Pump (2/2) (For Transmission And Differential Lock)
| KB***03 | Pin,Dowel | 2 |
| KB***08 | Gear Ass'Y | 1 |
| KB***01 | Cover | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Joint
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 12 |
| 01***70 | Bolt, Mount Bracket And Oil Inlet Tube, Bolt | 12 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Leaning Cylinder
| 07***80 | O-Ring,Hydraulic Oil Filter | 1 |
| 07***75 | O-Ring,Cylinder Head | 1 |
| 07***75 | Ring,Back-Up (Kit) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Parking Brake
| 01***60 | Screw | 1 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 1 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Steering Cylinder
| 04***20 | Ring, Snap | 2 |
| 07***45 | O-Ring,(F4350-60a0 -9 ) | 1 |
| 07***48 | O-Ring, (Without Emergency Steering) | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Steering Piping (1/2)
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Steering Piping (2/2)
| 01***40 | Bolt,(With Air Conditioner) | 1 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Steering Valve (1/2)
| 23***20 | Ring | 1 |
| 23***60 | Bearing Ass'Y | 1 |
| 23***70 | Race,Bearing | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Steering Valve (2/2)
| 23***40 | Housing Ass'Y | 1 |
| 23***90 | Valve Sub Ass'Y | 1 |
| 23***70 | Spring | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Tandem Drive Case
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 16 |
| 01***40 | Bolt,(With Service Valve R.H.) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Tandem Drive Gear And Chain
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 6 |
| 01***30 | Bolt,(For Rubber Shoe) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission (1st Clutch)
| 01***00 | Bolt,(For Front Brake Release) | 15 |
| 01***32 | Washer, (Without Emergency Steering) | 15 |
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission (2nd Clutch)
| 01***70 | Bolt,Rear Carrier (With Gumpad) | 2 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 2 |
| 04***34 | Pin-Dowel, Pin,Dowel (For Shipping) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission (Control Valve Cover)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***50 | Capscrew | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission (Control Valve)(1/2)
| 01***30 | Bolt - M8 X 30lg | 10 |
| 01***45 | Screw | 4 |
| 01***50 | Capscrew | 9 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission (Control Valve)(2/2)
| 01***50 | Capscrew | 2 |
| 01***60 | Bolt,(With Body Positioner) | 3 |
| 01***30 | Bolt,(With Body Positioner) | 8 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission (Forward And 3rd Clutch)
| 04***34 | Pin-Dowel, Pin,Dowel (For Shipping) | 2 |
| 04***18 | Ring,Snap (Without R.P.C.U.) | 2 |
| 04***20 | Ring, Retainer | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission (Low And Hight Clutch)
| 01***70 | Capscrew | 2 |
| 01***85 | Bolt | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 7 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission (Output Shaft)
| 01***30 | Bolt | 4 |
| 01***16 | Bolt - Box Mounting | 4 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 25 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission (Power Take Off)
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 6 |
| 01***45 | Bolt, Mounting Bracket To Radiator (Top) | 2 |
| 01***16 | Bolt - Seat And Tether Belt Mounting | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission (Reverse Clutch)
| 01***00 | Bolt | 2 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 2 |
| 04***34 | Pin-Dowel, Pin,Dowel (For Shipping) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission (Transfar Case)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 12 |
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 17 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission (Transmission Case)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 5 |
| 01***40 | Bolt,For Weight Adjusting Bolt | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission Oil Cooler Piping
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***50 | Bolt,(With Service Valve R.H.) | 2 |
| 01***60 | Bolt, Mount Tube To Switch Pump | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission Oil Filter(#50001-50067)
| 01***70 | Bolt, Accumulator Mounting Bracket | 4 |
| 01***36 | Wahser-Spring, Washer,Spring (Without Towing Winch) | 4 |
| 04***12 | Ring, Snap | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission Oil Filter(#50068-)
| 01***50 | Screw | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 04***12 | Ring, Snap | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission Oil Pressure Check Valve
| 01***50 | Bolt,(With Service Valve R.H.) | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
| 07***08 | Plug,(For W/O. Corrosion Resistor) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission Piping(#50001-50067)
| 01***35 | Bolt,(For Position Fixing) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 11 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Power Train : Transmission Piping(#50068-)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***60 | Bolt, Mount Tube To Switch Pump | 1 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
Wheel
Komatsu : Gd625a-1(S/N 50001-Up) : Wheel : Wheel And Tubed Tire
| 23***01 | Tire Ass'Y,(Yokohama) | 1 |
| 23***11 | Tire | 1 |
| 23***20 | Tube | 1 |
Komatsu : Gd625a-1(S/N 50001-Up) : Wheel : Wheel And Tubeless Tire
| 23***00 | Tire Ass'Y,(Yokohama) | 1 |
| 23***10 | Tire (Op) | 1 |
| 23***20 | Valve,Stem | 1 |
Work Equipment
Komatsu : Gd625a-1(S/N 50001-Up) : Work Equipment : Blade
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 24 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Work Equipment : Blade Lifter
| 01***55 | Bolt, Mount Lh Bracket | 4 |
| 01***35 | Bolt, Hydraulic Tank Mounting | 4 |
| 01***19 | Nut - M24 | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Work Equipment : Blade? Width 4000mm
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***40 | Bolt,(With Center Guard) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Work Equipment : Blade? Width 4300mm
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***40 | Bolt,(With Center Guard) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Work Equipment : Circle Reverse Gear (1/2)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 11 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
| 01***55 | Bolt,(Without Rops Guard? Canopy) | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Work Equipment : Circle Reverse Gear (2/2)
| 01***80 | Bolt, Mount Tubes To Switch And Work Pumps | 6 |
| 01***40 | Stud | 4 |
| 01***35 | Bolt | 4 |
Komatsu : Gd625a-1(S/N 50001-Up) : Work Equipment : Circle Support
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 6 |
| 01***70 | Bolt, Accumulator Mounting Bracket | 6 |
Komatsu : Gd625a-1(S/N 50001-Up) : Work Equipment : Drawbar
| 01***15 | Bolt (Kit) | 1 |
| 01***35 | Bolt,(For Shipping) | 15 |
| 01***50 | Bolt | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Work Equipment : Rear Mount Ripper
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 18 |
| 01***40 | Bolt,(With Service Valve R.H.) | 8 |
| 01***36 | Wahser-Spring, Washer,Spring (Without Towing Winch) | 26 |
Komatsu : Gd625a-1(S/N 50001-Up) : Work Equipment : Ripper Mounting Parts
| 01***55 | Bolt,(With Hook) | 4 |
| 01***55 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***85 | Bolt | 8 |
Komatsu : Gd625a-1(S/N 50001-Up) : Work Equipment : Scarifier
| 01***65 | Bolt,(With Canvas Or Rops Canopy) | 16 |
| 01***80 | Bolt,(For Adjustable Rod) | 2 |
| 01***00 | Bolt,(Without Cab) | 2 |
Komatsu : Gd625a-1(S/N 50001-Up) : Work Equipment : Scarifier Lifter
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***10 | Bolt (Op) | 4 |
| 01***00 | Bolt | 2 |
GD625A-1(S/N 50001-UP) serial number reference
On this GD625A grader the PIN/machine serial number plate sits at the front of the rear frame, low on the left side of the machine, as documented for this GD-series grader family. Unlike Komatsu's excavator/dozer PC- and D-series machines, this grader family does not use a 3-character alpha PIN prefix; the model suffix (-1, -1A, -1B, -1C) plus the numeric serial break is what tells you which generation and manual set applies. Read the full model code off the plate first, then match the serial number against the breakpoints (50001, 60001, 65001) to confirm the running change.
| Prefix | Identifies | Notes |
|---|---|---|
| 50001-UP | GD625A-1 base generation | Base serial break for this GD625A-1 grader. Fitted with the 6D125-1 diesel. This is the machine's own factory-assigned serial range per the shop manual scope for this model. |
| 60001-UP | GD625A-1A running change | Running-change block after the base -1, per the GD610/GD620/GD660/GD670-series shop manual scope table. Same 6D125-1 engine family carries over. A North America parts book also lists this same break under the plain GD625A-1 designation, so treat -1A as the North America / export badge for this running change; verify exact suffix with dealer using full PIN. |
| 65001-UP | GD625A-1B running change | Later running-change block, listed alongside -1, -1A and -1C in the same shop manual scope table. 6D125-1 engine family carries over. |
| 60001-UP | GD625A-1C running change | Same starting break as -1A in the shop manual's own model/serial scope table and in separate parts-catalog listings. Likely reflects a parallel regional/domestic numbering track rather than a shared machine population. Confirm actual suffix (-1A vs -1C) against the full PIN and dealer records before using this number alone to pick a manual. |
Frequently asked questions
What engine does the Komatsu GD625A-1 (S/N 50001-UP) use?
A Komatsu 6D125-1 six-cylinder diesel, 11.05 L displacement, rated net 116 kW (155.6 HP) at 2200 rpm. It runs a mechanical governor and inline injection pump with no ECM or electronic diagnostics.
What is the operating weight of the GD625A-1 (S/N 50001-UP)?
Roughly 13,700 to 14,190 kg (30,200 to 31,280 lb). The exact figure varies by configuration, such as ripper or scarifier fitment and attachments.
What replaced the Komatsu GD625A-1?
A specific successor is not clearly documented. Within the same production line, the GD625A-1A, GD625A-1B, and GD625A-1C carried the run forward on the same 6D125-1 engine; Komatsu's later GD6xx-series graders are the closest parts and service analogue.
What GD625A-1(S/N 50001-UP) owners discuss
What do long-term owners say about 6D125-1 engine wear in the GD625A-1?
On high-hour units the pattern described is gradual, not sudden: oil misting from the crankcase breather and rising oil consumption per shift are read as tired rings and liners wearing in together rather than one part failing outright. A compression test or cylinder leak-down test is the standard way to confirm blow-by before committing to an inframe. Watch injector condition too - a fouled or misaligned injector can wash down a cylinder wall and speed up liner wear, so rough running or new smoke after hours of steady operation is worth chasing early rather than dismissing as normal aging.
Does the turbocharged 6D125-1 have any dust-related quirks on this grader?
Owners troubleshooting power loss or unusual wear on 6D125-1-powered machines have found sandblasted-looking compressor wheels on the turbo, a sign the engine is ingesting dust past the air intake system rather than a turbo defect. Check air filter seating, boot clamps, and the intake tube for cracks whenever compression or power complaints come up, before assuming the turbocharger itself is bad.
What causes circle binding and blade drift on the GD625A-1?
The circle rides on support shoes, and wear concentrates in the arc used most during routine grading passes. Once those shoes are shimmed tight to the worn section, the circle can bind or jam when it swings into a less-worn area outside normal travel. Separately, slow, jerky, or drifting blade lift/tilt movement more often traces to worn cylinder seals or an internal hydraulic leak than to the anti-drift check valves themselves, though the valves are worth inspecting first if drift shows up mainly on a cold start. Because unexpected blade or circle movement is a safety issue for anyone near the machine, have your dealer verify circle shoe clearance and cylinder seal condition before returning the grader to service.
Is circle shaft failure a known weak point, and how easy are replacement parts to get?
At least one long-term GD625A-1 owner reported a circle shaft failure in the field and described the wait on that specific shaft as longer than expected. This reads as a single account rather than a documented failure pattern across the model, but it is a structural, safety-relevant component, so budget extra lead time if you do not carry a spare, and have your dealer verify shaft and shoe condition during any circle service rather than just replacing the failed piece in isolation.
What undercarriage and driveline wear pattern is typical for this grader?
Power reaches the front and rear tandem wheels through chain-driven tandem cases that pivot to follow ground contour, and this chain-and-gearing path is the highest-wear driveline section on any grader of this type. It is also the component owners sample oil on most consistently. Discolored or metallic tandem case oil on a used unit points to advanced chain or bearing wear well before any external symptom shows up, so a fluid sample is worth more than a visual inspection alone when evaluating a used machine.
What electrical or sensor issues come up on this generation of grader?
This is a mechanical-injection engine generation that predates electronic engine control and fault-code diagnostics, so the electrical system here is a conventional gauge and monitor panel wired to individual switches and senders rather than an ECM network. The more common complaint is not sensor failure but corroded grounds and worn harness connectors at the monitor panel and starting switch, which show up as intermittent or false warning lamps rather than a real fault. Chase connector and ground condition before replacing a sender or gauge.
What should I check before buying a used GD625A-1(S/N 50001-UP)?
Run the circle through its full swing with the engine on and feel for play or binding rather than just eyeballing it at rest. Check the moldboard cutting edge for cupping and measure remaining thickness - replace the edge and its mounting hardware together once it is worn down. Pull an oil sample from the tandem cases and check color and wear metal content. Check articulation joint and pins for play, and inspect hydraulic hoses and cylinders (lift, tilt, circle shift) for leaks. Ask for maintenance and oil-sample history if the seller has it. Because circle shoe wear, articulation play, and hydraulic drift all affect steering and blade control, have your dealer verify these systems on a test drive before finalizing a purchase.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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