Komatsumotor grader(no series)
Komatsu GD505A-2(S/N 50003-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu GD505A-2 (S/N 50003-up) is a mid-size motor grader in the roughly 130 hp class, built around the Komatsu S6D105-1F, a six-cylinder turbocharged diesel with mechanical governing and no electronic engine control, rated at about 96.9 kW (130 hp) from 6.49 L displacement. Operating weight runs about 10,880 kg (23,986 lb). Power reaches the wheels through a Hydroshift power-shift transmission with 6 forward and 6 reverse speeds, giving a top forward speed near 43.4 km/h and reverse near 45.1 km/h. Produced through the mid-to-late 1980s, this serial-number break (50003-up) sits within Komatsu's A-series grader lineup alongside the related GD500R-2 and GD505R-2 models, offered in standard grading configuration with a moldboard around 3.7 m wide and a maximum depth of cut near 506 mm; ripper or scarifier attachments were common factory or field-fit options on machines of this class.
Komatsu carried this platform forward from an earlier GD505A-1 into the GD505A-2 with updated engine and hydraulic calibration, then continued it into a GD505A-3 revision before eventually folding the model line into the renumbered GD511A-1 grader family as Komatsu moved toward electronically controlled engines in the 2000s. Because the GD505A-2 predates any ECM or diagnostic electronics, it remains a straightforward mechanical machine to keep running, which is exactly why it still circulates in the used and parts markets: buyers value the simple, field-serviceable Hydroshift driveline and S6D105-1F engine, and demand stays steady for rebuilt transmissions, final drives, circle components, and engine wear parts on machines that are otherwise long out of factory production.
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 GD505A-2(S/N 50003-UP) specifications
Engine
| Engine model | Komatsu S6D105-1, 6-cylinder turbocharged diesel |
| Gross/net power | 130 hp (96.9 kW) |
| Net torque (5th-6th gear) | 467.8 Nm (345 lb-ft) |
| Displacement | 6.49 L (396 cu in) |
| Cylinders | 6, inline |
| Emissions tier | Not published for this serial range - predates modern emissions tiering, verify with dealer if relevant |
Weights
| Operating weight, total | 10,880 kg (23,986 lb) |
| Front axle load | 2,960 kg (6,526 lb) |
| Rear axle load | 7,920 kg (17,461 lb) |
| Shipping weight | Not documented in available factory literature for this serial range |
| Ground pressure | Not published |
Dimensions
| Overall transport length | 7.92 m (26 ft 0 in) |
| Overall width over tires | 2.35 m (7 ft 8 in) |
| Overall height to cab top | 2.78-2.80 m (9 ft 1 in-9 ft 2 in), varies by source |
| Wheelbase | 5.79 m (19 ft 0 in) |
| Tandem axle wheelbase | 1.52 m (5 ft 0 in) |
| Front ground clearance | 0.58 m (1 ft 11 in) |
| Rear ground clearance | 0.37 m (1 ft 2 in) |
| Blade base | 2.54 m (8 ft 4 in) |
| Moldboard width | 3.72 m (12 ft 2 in) |
| Moldboard height | 656 mm (25.8 in) |
| Moldboard thickness | 20 mm (0.8 in) |
| Max depth of cut | 506 mm (19.9 in) |
| Tire size | 13.00-24, 8PR |
Performance
| Transmission | Powershift (hydroshift), 6 forward / 6 reverse speeds |
| Max travel speed forward | 43.4 km/h (27 mph) |
| Max travel speed reverse | 45.1 km/h (28 mph) |
| Turning radius | 6.61 m (21 ft 8 in) |
| Max blade lift above ground | 432 mm (17.0 in) |
| Gradeability | Not published for this model |
Service capacities (summary)
| Fuel tank | Not documented in available public sources - verify with dealer or shop manual |
| Hydraulic system | Not documented in available public sources - verify with dealer or shop manual |
| Engine oil | Not documented in available public sources - verify with dealer or shop manual |
| Cooling system | Not documented in available public sources - verify with dealer or shop manual |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
GD505A-2(S/N 50003-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (oil pan, with filter) — S6D105-1 diesel | Not documented in publicly available sources for this exact serial range (S/N 50003-UP). Verify against the dealer lubrication chart before service. | Komatsu EO diesel engine oil, CD/CF-class. Use 15W-40 in normal ambient range; drop to 10W-30 or straight 10W in sub-freezing climates per the OMM viscosity chart. |
| Cooling system (radiator + engine water jacket) | Not documented in publicly available sources for this exact serial range. Verify with dealer. | Komatsu genuine antifreeze/coolant (year-round ethylene-glycol type), mixed to the regional freeze-protection ratio called out in the OMM. |
| Fuel tank | 205 L (54.2 US gal) | No. 2-D diesel fuel; switch to a winter-blend or No. 1-D diesel in cold climates to prevent fuel waxing. |
| Transmission — torque converter (DVT-2) | 6.5 L (1.7 US gal) | Komatsu TO powertrain/transmission oil (engine-oil-grade), 30-weight in warm climates, 10W in cold climates, per the OMM viscosity chart. |
| Transmission oil cooler circuit | 12.5 L (3.3 US gal) | Same Komatsu TO powertrain oil as the torque converter/transmission circuit — shared reservoir. |
| Hydraulic system and tank | Approximately 90 L (23.8 US gal) for the hydraulic tank; treat as an approximate figure and confirm against the dealer chart for this exact serial range. | Komatsu HO hydraulic oil (anti-wear type); a lighter-viscosity hydraulic oil is called for in cold-climate operation per the OMM chart. |
| Final drive / tandem case (each side) | Not documented in publicly available sources for this exact serial range. Verify with dealer. | Komatsu TO powertrain/gear oil per the OMM final-drive lubrication spec. |
| Circle-reverse / drawbar-circle-moldboard gearbox | Not documented in publicly available sources for this exact serial range. Verify with dealer. | Komatsu TO powertrain/gear oil, per OMM. |
| Front wheel bearings / steering axle | Not documented in publicly available sources for this exact serial range. Verify with dealer. | Komatsu multipurpose grease or gear oil depending on bearing design, per OMM lubrication chart. |
| Grease points (chassis, pins, bushings) | Spec only — no reservoir capacity applies. | Komatsu multipurpose lithium-based EP grease (NLGI 2), applied per the OMM grease-point schedule. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu GD505A-2(S/N 50003-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 GD505A-2(S/N 50003-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
With no ECM on the S6D105-1F, oil sampling is the main early-warning tool on this grader. Pull engine, Hydroshift transmission, and tandem final-drive oil at each service interval and watch for rising iron or copper readings that flag clutch-pack or gear wear before it becomes a breakdown. Track coolant corrosion-inhibitor level closely, since mechanically governed engines of this era are prone to cavitation damage without treated coolant. Grease intervals at the circle and drawbar matter more here than on ECM-equipped machines, since there is no warning lamp for a dry pin.
Corrective & Common Repairs
Typical failure points on the GD505A-2 are Hydroshift clutch-pack wear from stretched oil-change intervals, circle wear-shoe and drawbar ball-socket looseness from skipped greasing, and tandem final-drive seal leaks at the axle housings. The mechanically governed S6D105-1F is prone to injection pump calibration drift and fuel filter clogging on tired units, showing up as rough idle or power loss. Moldboard cutting-edge and end-bit wear is constant under grading load and should be checked alongside blade-lift cylinder drift, a common symptom of worn circle components.
Overhaul & Rebuild Points
Major overhaul work concentrates on the tandem final-drive housings, bearings, and planetary gearing, which take the heaviest load under continuous grading duty, and on the Hydroshift transmission clutch packs. Rebuild the circle drive assembly, gear, pinion, and wear shoes together since they wear as a matched set. The S6D105-1F's turbocharger and injection pump are the other frequent rebuild candidates on high-hour units, since this mechanically governed engine depends entirely on injector and pump condition for power output and fuel economy.
Seasonal & Environment Servicing
Before cold weather, switch to the correct viscosity engine, Hydroshift, and final-drive oils and confirm coolant protection, since most GD505A-2 units left the factory without a block heater. On dusty or abrasive grading sites, air cleaner elements load faster and circle wear shoes wear quicker, so shorten filter and grease intervals accordingly. In wet-season work, drain the fuel/water separator more often and check tandem case seals for water intrusion, which accelerates final-drive corrosion.
GD505A-2(S/N 50003-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 600-311-9100 | Fuel Filter Ass'Y | Fuel system service | Check fitment → |
| 09019-08035 | Wrench,Filter (For Add. Fuel Filter) | Fuel system service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
GD505A-2(S/N 50003-UP) 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/strainer, worn oil pump, or failing pressure sender/switch | Stop engine immediately, check oil level and filter condition before restarting |
| Water temperature lamp (red pictograph + buzzer, no numeric code) | Engine coolant temperature has exceeded the safe operating range | Low coolant level, clogged radiator core, slipping or damaged fan belt, or thermostat failure | Idle down, verify coolant level and radiator condition once safe to check, do not remove cap while hot |
| Charge lamp (red pictograph, no numeric code) | Alternator is not charging the battery circuit | Broken/slipping alternator belt, faulty alternator, or wiring/connector fault | Check belt tension and alternator wiring; test alternator output if belt is intact |
| Preheat (intake air heater) lamp (amber pictograph, no numeric code) | Indicates intake air preheat device is energized for cold-start assist | Normal cold-start operation; stays on abnormally long if heater relay or element has failed | Wait for lamp to go out before cranking in cold weather; if it never illuminates or stays on continuously, check preheat relay/element and wiring |
| Air cleaner restriction indicator (mechanical or lamp signal, no numeric code) | Air filter element is loading up and restricting intake airflow | Dirty or clogged primary air filter element | Inspect and clean or replace the air filter element |
| Fuel level lamp/gauge low warning (no numeric code) | Fuel tank level has dropped to reserve | Normal fuel consumption nearing empty tank | Refuel; if lamp stays on with a full tank, check 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.
GD505A-2(S/N 50003-UP) attachments & work tools
Grading moldboard / blade
Main work tool is a drawbar-circle-moldboard (DCM) mounted grading blade, standard width around 3.7 m (12 ft 2 in), with a narrower roughly 3.4 m blade also cataloged as an alternative for this model. Blade height runs about 25.8 in (655 mm) with roughly 0.8 in (20 mm) plate thickness and maximum cutting depth near 19.9 in (505 mm); actual width/thickness varies by configuration and market.
Cutting edges and end bits
Bolt-on, through-hardened cutting edges and replaceable end bits protect the moldboard base edge and corners. End bits are typically heat-treated boron steel; cutting edge profiles for this grader class are offered in curved or flat double-bevel styles across a range of widths, chosen by ground condition and wear life needs.
Rear scarifier / ripper
A rear-mounted scarifier attaches behind the circle for breaking up compacted or frozen material ahead of grading; this model is cataloged with a multi-tooth (about 9-tooth) scarifier arrangement, with tooth count and shank spacing varying by market spec. A rear ripper-type version with a smaller number of heavier shanks is offered on graders in this size class for tougher ripping duty.
Front-mounted blade (dozer blade)
An optional front-frame blade can be fitted ahead of the front axle for light dozing, snow, or stockpile work. It requires its own hydraulic lift cylinder, control lever, and pilot check valve, plus dedicated piping tied into the machine's hydraulic circuit, so it is supplied and installed as a hydraulic kit rather than a simple bolt-on.
Snow removal equipment
Factory-supported snow configurations for this grader include V-type and angling snow plow mountings, referenced in the machine's own parts documentation. These use the same front-frame or blade mounting provisions as other front attachments rather than a separate coupler system.
Circle / drawbar mounting system
Work tools mount through the standard Komatsu drawbar-circle arrangement rather than a quick-attach coupler: the circle provides 360-degree rotation with blade lift and side-shift, and the moldboard bolts to the circle. This is a fixed OEM mounting system, not an interchangeable third-party coupler.
Hydraulic control and piping for attachments
Attachment functions (blade lift/tilt/side-shift, scarifier, optional front blade) run off the machine's own multi-spool control valve and low-pressure piping circuit. Optional tools such as the front blade need additional piping and a pilot check valve tapped into this circuit, so fitment is a hydraulic integration job, not a plug-and-play add-on.
Impact protection / guarding
Blade accumulators and the blade lift cylinders act as shock protection for the moldboard, drawbar, and circle if the cutting edge strikes a fixed obstruction, cushioning impact loads through the hydraulic circuit rather than a mechanical shear pin. This is a factory design feature of the work-equipment hydraulics rather than a separate purchasable option.
All GD505A-2(S/N 50003-UP) assemblies by section
Every catalogued assembly group for the Komatsu GD505A-2(S/N 50003-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Engine Related Parts And Electrical System
Komatsu : Gd505a-2(S/N 50003-Up) : Engine Related Parts And Electrical System : Back-Up Lamp (Op)
| 08***00 | Switch,Back Lamp And Safety | 1 |
| 08***20 | Bulb? 25w,25w | 1 |
| 08***00 | Lamp Ass'Y,Back-Up | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Engine Related Parts And Electrical System : Battery
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 16 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : Engine Related Parts And Electrical System : Electrical System (Center)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***40 | Bolt,(With Air Conditioner) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Engine Related Parts And Electrical System : Electrical System (Front)
| 01***16 | Bolt (With Air Heater & Conditioner) | 14 |
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Engine Related Parts And Electrical System : Electrical System (Rear)
| 01***20 | Bolt,(With Auto Emergency Steering) | 6 |
| 01***25 | Bolt,Without Revolution Sensor | 1 |
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Engine Related Parts And Electrical System : Electrical System (Wiring)
| 23***43 | Cable | 1 |
| 23***30 | Cable | 1 |
| 23***31 | Cable | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Engine Related Parts And Electrical System : Engine Mounting Parts
| 01***20 | Bolt,(Without Maintenance Monitor) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : Engine Related Parts And Electrical System : Fuel Control Lever Linkage
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***85 | Bolt | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Engine Related Parts And Electrical System : Fuel Control Pedal Linkage
| 01***30 | Bolt,(For Mechanical Governor) | 3 |
| 01***40 | Bolt | 1 |
| 01***05 | Nut? L.H. Thread,R.H. Thread | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Engine Related Parts And Electrical System : Fuel Tank
| 01***10 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***35 | Bolt, Hydraulic Tank Mounting | 4 |
| 01***85 | Bolt,(For Perforated Mask) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Engine Related Parts And Electrical System : Instrument Panel
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 3 |
| 01***20 | Bolt,(Without Maintenance Monitor) | 6 |
| 01***10 | Bolt,For Additional Rear Lamp | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Engine Related Parts And Electrical System : Monitor Panel
| 01***20 | Screw (Not Illustrated) | 1 |
| 01***12 | Screw,(With Articulate Indicator) | 8 |
| 01***23 | Washer,(With Auto Emergency Steering) | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : Engine Related Parts And Electrical System : Power Take Off
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***40 | Bolt,(With Service Valve R.H.) | 11 |
| 01***80 | Bolt | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : Engine Related Parts And Electrical System : Radiator
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 5 |
| 01***65 | Bolt | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Engine Related Parts And Electrical System : Water Separator (Op)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 2 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 4 |
Frame And Guard
Komatsu : Gd505a-2(S/N 50003-Up) : Frame And Guard : Auxiliary Seat (Std? For Japan) (Op? Except Japan)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***26 | Screw (Op) | 6 |
Komatsu : Gd505a-2(S/N 50003-Up) : Frame And Guard : Engine Hood
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 19 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 12 |
Komatsu : Gd505a-2(S/N 50003-Up) : Frame And Guard : Engine Side Panel (Std? For Japan) (Op? Except Japan)
| 01***25 | Bolt,(For Automatic) | 10 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 17 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 20 |
Komatsu : Gd505a-2(S/N 50003-Up) : Frame And Guard : Front Frame
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 8 |
| 01***08 | Nut,(For Russian) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Frame And Guard : Mark And Plates (Chinese)
| 01***06 | Screw | 4 |
| 01***08 | Screw, Terminal | 4 |
| 01***10 | Washer,Spring (For Engine Room Lamp) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Frame And Guard : Mark And Plates (French)
| 01***06 | Screw | 4 |
| 01***08 | Screw, Terminal | 4 |
| 01***10 | Washer,Spring (For Engine Room Lamp) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Frame And Guard : Mark And Plates (Spanish)
| 01***06 | Screw | 4 |
| 01***08 | Screw, Terminal | 4 |
| 01***10 | Washer,Spring (For Engine Room Lamp) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Frame And Guard : Marks And Plates (Japanese And English)
| 01***06 | Screw | 4 |
| 01***08 | Screw, Terminal | 4 |
| 01***10 | Washer,Spring (For Engine Room Lamp) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Frame And Guard : Marks And Plates (Persian)
| 01***06 | Screw | 4 |
| 01***08 | Screw, Terminal | 4 |
| 01***10 | Washer,Spring (For Engine Room Lamp) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Frame And Guard : Operator'S Compartment
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 15 |
Komatsu : Gd505a-2(S/N 50003-Up) : Frame And Guard : Operator'S Guard And Hand Rail (Except Japan)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
| 01***60 | Bolt, Tube To Oil Cooler | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Frame And Guard : Operator'S Seat
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 7 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Frame And Guard : Rear Frame
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 1 |
Hydraulic System
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : 4-Spool Control Valve
| 01***16 | Bolt (Op) | 16 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : 5-Spool Control Valve
| 01***16 | Bolt (Op) | 20 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Articulate Cylinder
| 07***95 | O-Ring,(Y1620-11a0a-12) | 1 |
| 07***95 | Ring,Back-Up? Cylinder Head | 1 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 1 |
Komatsu : Gd505a-2(S/N 50003-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 : Gd505a-2(S/N 50003-Up) : Hydraulic System : Blade Side Shift Cylinder
| 07***85 | O-Ring,(For Snow Removing) | 1 |
| 07***85 | Ring,Back-Up? Head | 1 |
| 07***45 | Seal,Dust? Cylinder | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Console Box (1/2)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 6 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Console Box (2/2)
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***12 | Screw,(Additional Sun Visor) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Directional Control Valve
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 1 |
| 07***34 | O-Ring,(For Front Attachment) | 4 |
| 07***12 | Plug,(With Lock Valve) | 1 |
Komatsu : Gd505a-2(S/N 50003-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 : Gd505a-2(S/N 50003-Up) : Hydraulic System : Hydraulic Control Lever (1/2)
| 01***05 | Nut? L.H. Thread,R.H. Thread | 8 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 8 |
| 04***12 | Pin,Cotter (For Ripper) | 16 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Hydraulic Control Lever (2/2)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***05 | Nut? L.H. Thread,R.H. Thread | 7 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Hydraulic Motor
| 23***30 | Shaft Ass'Y | 1 |
| 23***50 | Housing Ass'Y | 1 |
| 23***00 | Motor Ass'Y | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Hydraulic Piping (Articulate Cylinder Line)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Hydraulic Piping (Blade Lift Cylinder Line)
| 01***65 | Bolt,R.H | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***50 | Bolt,(With Service Valve R.H.) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Hydraulic Piping (Blade Shift Cylinder Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***95 | Bolt,(For 2nd Travel Speed) (Op) | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Hydraulic Piping (Circle Revolution Motor Line)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***90 | Bolt, Fan Mounting | 1 |
| 01***13 | Nut,(For Adjustable Rod) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Hydraulic Piping (Drawbar Shift Cylinder Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***50 | Bolt,(With Service Valve R.H.) | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Hydraulic Piping (Laening Cylinder Line)
| 01***25 | Bolt, Mount Filter To Bracket | 1 |
| 01***13 | Nut,(For Adjustable Rod) | 2 |
| 01***09 | Nut,(With Body Positioner) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Hydraulic Piping (Scarifier Cylinder Line) (Std? Japan) (Op? Except Japan)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***09 | Nut,(With Body Positioner) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Hydraulic Tandem Pump
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 8 |
| 04***15 | Ring, Snap | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Hydraulic Tank
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 16 |
| 01***50 | Bolt,(With Service Valve R.H.) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Leaning Cylinder
| 07***75 | O-Ring,Cylinder Head | 1 |
| 07***75 | Ring,Back-Up (Kit) | 1 |
| 07***04 | Bushing,Bushing | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Low Pressure Piping (1/3)
| 01***16 | Bolt (With Air Heater & Conditioner) | 6 |
| 01***35 | Bolt,(For Position Fixing) | 8 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Low Pressure Piping (2/3)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***70 | Bolt, Mount Bracket And Oil Inlet Tube, Bolt | 3 |
| 01***75 | Bolt,(For Adjusting) | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Low Pressure Piping (3/3)(#50003-50228)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***70 | Bolt, Mount Bracket And Oil Inlet Tube, Bolt | 3 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 5 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Low Pressure Piping (3/3)(#50229-)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***70 | Bolt, Mount Bracket And Oil Inlet Tube, Bolt | 3 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 5 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Main Relief Valve (For 5 And 4-Spool Valve)
| 07***10 | O-Ring,(F4350-62a0 -5 ), O-Ring; Komatsu S/N 22***01 & Abv - Was 07000-02010, O-Ring; Was 07000-02010 | 1 |
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 1 |
| 07***34 | O-Ring, O-Ring,Drain Plug? R.H. Half Tank | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Pilot Check Valve
| 01***12 | Nut | 1 |
| 07***12 | O-Ring, Divider Valve Mounting | 2 |
| 07***21 | O-Ring (Kit) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Scarifier Cylinder (Std? For Japan) (Op? Except Japan)
| 07***85 | O-Ring,(For Snow Removing) | 1 |
| 07***85 | Ring,Back-Up? Head | 1 |
| 07***45 | Seal,Dust? Cylinder | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Hydraulic System : Shuttle Valve
| 04***87 | Ball | 2 |
| 07***34 | O-Ring,(For 2-Actuater Attachment) | 2 |
| 07***38 | Spring | 1 |
Optional Parts
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Air Cleaner Cover (Cold Terrain Spec.)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 3 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Air Cleaner Extension (Sandy Terrain Spec.)
| 23***10 | Extension,Pipe | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Air Compressor Related Parts (Std? For Japan) (Op? Except Japan)
| 01***25 | Bolt,(For Automatic) | 1 |
| 01***25 | Bolt,Without Revolution Sensor | 1 |
| 01***32 | Nut | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Air Dryer And Auto Drain Valve (Std? For Japan)(Op? Except Japan)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 8 |
| 23***00 | Dryer (Op) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Angle Cylinder (For Angling Snow Plow)
| 04***25 | Ring, Snap | 1 |
| 07***95 | O-Ring,(Y1620-11a0a-12) | 1 |
| 07***95 | Ring,Back-Up? Cylinder Head | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Angling Snow Plow (1/2)(#.-)
| 01***16 | Bolt (With Air Heater & Conditioner) | 1 |
| 01***35 | Bolt,(For Position Fixing) | 1 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Angling Snow Plow (1/2)(#50003-.)
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***38 | Nut | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Angling Snow Plow (2/2)(#.-)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 24 |
| 01***80 | Bolt,(With Scarifier) | 6 |
| 01***85 | Bolt | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Angling Snow Plow (2/2)(#50003-.)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 24 |
| 01***50 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***80 | Bolt,(With Scarifier) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Angling Snow Plow Piping (1/2)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***65 | Bolt,R.H | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Angling Snow Plow Piping (2/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Blade (3.4m)
| 01***45 | Washer,(For Travel Motor) (Not Show) | 32 |
| 23***43 | Edge,Cutting (Width 6 Feet) | 1 |
| 23***50 | Bolt,(For Edge 13mm? 16mm) | 28 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Blade Shift Cylinder (For Variable Blade)(#50343-)
| 07***65 | O-Ring,(F5350-62a0 -14 ) | 1 |
| 07***65 | Ring,Back-Up (Kit) | 1 |
| 07***04 | Bushing | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Brake Oil Level Warning Lamp (Except Japan)
| 08***00 | Lamp,Caution? Parking Brake | 1 |
| 23***01 | Reservoir Ass'Y | 1 |
| 23***10 | Harness | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Canvas Canopy (Std? For Japan) (Op? Except Japan)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 8 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 01***30 | Bolt-Hex, Bolt,(With Center Guard) | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Car Heater (1/2)(#50003-50490)
| 01***16 | Bolt (With Air Heater & Conditioner) | 11 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 16 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Car Heater (1/2)(#50491-)
| 01***16 | Bolt (With Air Heater & Conditioner) | 16 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***12 | Bolt | 5 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Car Heater (2/2)(#50003-50490)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***16 | Seat,(For Desiccant Type) (Welded) | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Car Heater (2/2)(#50491-)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***16 | Seat,(For Desiccant Type) (Welded) | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Circle Reverse Gear (1/2) (For Torque Up)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 12 |
| 01***40 | Bolt,(With Service Valve R.H.) | 8 |
| 01***55 | Bolt,(Without Rops Guard? Canopy) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Circle Reverse Gear (2/2) (For Torque Up)
| 01***20 | Bolt,(With Auto Emergency Steering) | 1 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
| 01***55 | Bolt | 6 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Circle Support (For Power Tilt)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***50 | Bolt,(For Strengthened Cover) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Control Lever (For Angling Snow Plow)
| 01***05 | Nut,L.H. Thread (D31s) | 4 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Control Lever (For Front Blade)
| 01***05 | Nut,L.H. Thread (D31s) | 4 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Control Lever (For Power Tilt)
| 01***05 | Nut? L.H. Thread,R.H. Thread | 1 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Control Lever (For V-Type Snow Plow)
| 01***05 | Nut,L.H. Thread (D31s) | 2 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Control Lever (For Variable Blade)
| 01***05 | Nut? L.H. Thread,R.H. Thread | 1 |
| 01***05 | Nut,L.H. Thread (D31s) | 1 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Fast Fill Fuel System
| 01***20 | Bolt,(With Auto Emergency Steering) | 6 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 6 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Fire Extinguisher
| 01***25 | Bolt,Without Revolution Sensor | 4 |
| 01***20 | Screw | 4 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Flag And Smoke Candle
| 01***08 | Screw - Holder | 2 |
| 01***12 | Screw,(With Articulate Indicator) | 4 |
| 01***13 | Washer,Spring(For Wiper Switch Earth) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Front Blade Piping
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***65 | Bolt,R.H | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Front Blade(#.-)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 20 |
| 01***85 | Bolt | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Front Blade(#50003-.)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 20 |
| 01***36 | Wahser-Spring, Washer,Spring (Without Towing Winch) | 22 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Front Lower Wiper And Door Wiper
| 01***20 | Screw - Turn Signal And Parkinglight Mounting | 6 |
| 01***04 | Nut,(For Air Conditioner Less) | 6 |
| 01***13 | Washer,Spring(For Wiper Switch Earth) | 6 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Front Weight (Cold Terrain Spec.)
| 01***20 | Capscrew | 8 |
| 01***19 | Nut - M24 | 8 |
| 01***60 | Washer,(Without Rops Guard? Canopy) | 16 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Fuel Pre Filter (For Oil Bath Air Cleaner) (Except Japan)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
| 07***12 | Gasket,Mechanical Pump Piping | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Fuel Pre-Filter (Sandy Terrain Spec.)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Heat Wire Glass
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***08 | Screw, Terminal | 6 |
| 01***03 | Nut,(With Joy Stick Steering) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Lift Cylinder (For Angling Snow Plow)
| 07***95 | O-Ring,(Y1620-11a0a-12) | 1 |
| 07***95 | Ring,Back-Up? Cylinder Head | 1 |
| 07***07 | Seal (Kit) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Lift Cylinder (For Front Blade)
| 07***95 | O-Ring,(Y1620-11a0a-12) | 1 |
| 07***95 | Ring,Back-Up? Cylinder Head | 1 |
| 07***07 | Seal (Kit) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Lift Cylinder (For V-Type Snow Plow)
| 07***95 | O-Ring,(Y1620-11a0a-12) | 1 |
| 07***95 | Ring,Back-Up? Cylinder Head | 1 |
| 07***07 | Seal (Kit) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Mark And Plate (For V-Type Snow Plow And Angling Snow Plow)
| 23***70 | Support,(V-Type Snow Plow) | 1 |
| 23***10 | Plate? Mark,(V-Type Snow Plow) | 1 |
| 23***20 | Plate? Mark,(V-Type Snow Plow) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Oil Bath Air Cleaner (Except Japan)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 14 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***15 | Bolt | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Pilot Check Valve (For Angling Snow Plow)
| 07***21 | O-Ring (Kit) | 1 |
| 07***22 | O-Ring,(F5350-63a0 -26 ) | 1 |
| 07***21 | Ring, Back-Up | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Pilot Check Valve (For Front Blade)
| 07***21 | O-Ring (Kit) | 1 |
| 07***22 | O-Ring,(F5350-63a0 -26 ) | 1 |
| 07***21 | Ring, Back-Up | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Pilot Check Valve (For Power Tilt)
| 01***12 | Nut | 1 |
| 07***12 | O-Ring, Divider Valve Mounting | 2 |
| 07***21 | O-Ring (Kit) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Pilot Check Valve (For V-Type Snow Plow)
| 07***21 | O-Ring (Kit) | 1 |
| 07***22 | O-Ring,(F5350-63a0 -26 ) | 1 |
| 07***21 | Ring, Back-Up | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Power Tilt Cylinder
| 04***20 | Ring, Snap | 4 |
| 07***85 | O-Ring,(For Snow Removing) | 1 |
| 07***85 | Ring,Back-Up? Head | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Power Tilt Piping
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Rops Cab (1/4) (Cab)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 14 |
| 01***06 | Screw,(Additional Sun Visor) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Rops Cab (2/4) (Window Glass)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***16 | Screw (Op) | 28 |
| 01***11 | Nut,(Not Shown) | 5 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Rops Cab (3/4) (Door)
| 01***16 | Bolt (With Air Heater & Conditioner) | 20 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 12 |
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 5 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Rops Cab (4/4) (Electrical System)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 2 |
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 14 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Rops Canopy
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 8 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***35 | Bolt | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Scarifier (9-Piecies Tooth Type) (Except Japan)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***65 | Bolt,(With Canvas Or Rops Canopy) | 8 |
| 01***70 | Bolt,Rear Carrier (With Gumpad) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Seat Belt (3-Point Holding Type)
| 01***10 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Service Meter (Except Japan)
| 08***19 | Band,(Without Air Conditioner) | 10 |
| 08***12 | Grommet,(Not Used For Cab Spec.) | 2 |
| 08***20 | Cable? 2.0m | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Shovel Hanger
| 23***60 | Band | 1 |
| 23***10 | Grille,(Modified Parts) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Sign Plate
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Slide Cylinder (For Variable Blade)(#50003-50342)
| 04***18 | Ring, Snap | 1 |
| 07***65 | O-Ring,(F5350-62a0 -14 ) | 1 |
| 07***65 | Ring,Back-Up (Kit) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Slide Cylinder (For Variable Blade)(#50343-)
| 07***65 | O-Ring,(F5350-62a0 -14 ) | 1 |
| 07***65 | Ring,Back-Up (Kit) | 1 |
| 07***04 | Bushing | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Snow Removal Edge
| 01***45 | Washer,(For Travel Motor) (Not Show) | 38 |
| 23***50 | Bolt,(For Edge 13mm? 16mm) | 34 |
| 23***60 | Bolt | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Steel Cab (1/6) (Cab)(#.-)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 12 |
| 01***60 | Bolt, Tube To Oil Cooler | 10 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Steel Cab (1/6) (Cab)(#50003-.)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 26 |
| 01***10 | Screw,(For Lighter) | 3 |
| 01***03 | Nut,(With Joy Stick Steering) | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Steel Cab (2/6) (Inner Panel)(#.-)
| 01***14 | Screw,R.H | 77 |
| 01***05 | Washer,(Without Window Washer) | 77 |
| 23***30 | Plate (Welded) | 59 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Steel Cab (2/6) (Inner Panel)(#50003-.)
| 01***14 | Screw,R.H | 80 |
| 01***05 | Washer,(Without Window Washer) | 80 |
| 23***30 | Plate (Welded) | 62 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Steel Cab (3/6) (Window Glass)(#.-)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***16 | Screw (Op) | 28 |
| 01***11 | Nut,(Not Shown) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Steel Cab (3/6) (Window Glass)(#50003-.)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***16 | Screw (Op) | 28 |
| 01***11 | Nut,(Not Shown) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Steel Cab (4/6) (Door)(#.-)
| 01***20 | Bolt,(Without Maintenance Monitor) | 4 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 20 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 12 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Steel Cab (4/6) (Door)(#50003-.)
| 01***16 | Bolt (With Air Heater & Conditioner) | 20 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 12 |
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 5 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Steel Cab (5/6) (Lamp And Room Mirror)(#.-)
| 01***16 | Bolt | 3 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 8 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Steel Cab (5/6) (Lamp And Room Mirror)(#50003-.)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 8 |
| 01***08 | Screw - Holder | 2 |
| 01***10 | Screw (Op) | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Steel Cab (6/6) (Wiper And Accessory Parts)(#.-)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 2 |
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 14 |
| 01***10 | Screw,(For Wiper Switch Earth) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Steel Cab (6/6) (Wiper And Accessory Parts)(#50003-.)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 2 |
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 14 |
| 01***10 | Screw,(For Wiper Switch Earth) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Tachograph
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***20 | Screw | 6 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Tire Protecter
| 01***40 | Bolt,R.H. Outside And L.H. Inside, Bolt | 8 |
| 01***42 | Washer,Spring (For Pedal Steering), Washer-Spring | 8 |
| 15***10 | Seat (Welded) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : V-Type Snow Plow (1/2)(#50003-.)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***65 | Bolt,R.H | 3 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : V-Type Snow Plow (2/2)(#.-)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 24 |
| 01***80 | Bolt,(With Scarifier) | 6 |
| 01***85 | Bolt | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : V-Type Snow Plow (2/2)(#50003-.)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 14 |
| 01***50 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***60 | Bolt | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : V-Type Snow Plow Piping
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***65 | Bolt,R.H | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Variable Blade Piping (1/2)(#50343-)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***45 | Bolt, Mounting Bracket To Radiator (Top) | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Variable Blade Piping (2/2)(#50343-)
| 01***10 | Bolt,(With Auto Emergency Steering) | 6 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Variable Blade Piping(#50003-50342)
| 01***10 | Bolt,(With Auto Emergency Steering) | 8 |
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***40 | Bolt, Mount Master Brake Cylinder | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Variable Blade Wiring(#50003-50342)
| 01***12 | Bolt,(With Cylinder Cover) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***80 | Screw | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Variable Blade Wiring(#50343-)
| 01***20 | Bolt,(Without Maintenance Monitor) | 1 |
| 01***12 | Bolt,(With Cylinder Cover) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Variable Blade(#50003-50342)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 13 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 24 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Variable Blade(#50343-)
| 01***22 | Bolt,(10m) | 16 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Vehicle Inspection Parts (For Angling Snow Plow)
| 01***18 | Bolt | 4 |
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 6 |
Komatsu : Gd505a-2(S/N 50003-Up) : Optional Parts : Vehicle Inspection Parts (For V-Type Snow Plow)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 6 |
Power Train
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Damper
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 24 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 24 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 18 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Inching Control Pedal
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 2 |
| 01***10 | Nut,(Without Air Conditioner) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission (1st Gear)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 6 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 7 |
| 01***65 | Capscrew | 13 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission (2nd Gear)
| 04***24 | Pin,Dowel (For No.3 Housing) | 2 |
| 04***20 | Ring, Retaining | 1 |
| 04***30 | Seal, Dust | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission (Control Valve) (1/3)
| 01***35 | Bolt,(For Position Fixing) | 2 |
| 01***60 | Bolt,(For Japan And Sweden) | 3 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission (Control Valve) (2/3)(#50003-50246)
| 01***30 | Bolt,(For Mechanical Governor) | 10 |
| 01***45 | Screw | 4 |
| 01***50 | Bolt (Kit) | 9 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission (Control Valve) (2/3)(#50247-)
| 01***30 | Bolt,(For Mechanical Governor) | 10 |
| 01***45 | Screw | 4 |
| 01***50 | Bolt (Kit) | 9 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission (Control Valve) (3/3)
| 01***50 | Bolt (Kit) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 12 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission (Forward And 3rd Gear)
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 4 |
| 04***18 | Ring,Snap | 1 |
| 04***20 | Ring, Retainer | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission (Output Shaft) (1/2)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 8 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission (Output Shaft) (2/2)
| 01***30 | Bolt | 4 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 6 |
| 01***80 | Bolt,(For Adjustable Rod) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission (Reverse Gear)
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 2 |
| 04***30 | Ring, Retaining | 1 |
| 04***25 | Ring,(W/Emergency Steering) (1m?1d) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission (Transfer Case)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***40 | Bolt,R.H. Outside And L.H. Inside, Bolt | 10 |
| 01***65 | Bolt | 10 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission (Transfer Gear)
| 01***55 | Bolt, Mount Tube To Switch Pump | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 8 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 12 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission (Transmission Case)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
| 04***30 | Bolt,Eye (For Lifting) | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission Control Box And Lock Lever
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 2 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission Control Lever And Linkage
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Upper) | 2 |
| 01***06 | Nut? L.H. Thread,R.H. Thread | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission Filter
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***70 | Bolt, Accumulator Mounting Bracket | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission Guard (Op)
| 01***50 | Bolt,(For Tree Pusher) | 6 |
| 01***60 | Flat Washer - M20 (Hardened) | 6 |
| 23***10 | Bracket (Welded) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission Piping
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission Pump
| 04***18 | Ring, Retaining | 1 |
| 70***10 | Pump Ass'Y,(Sar040) | 1 |
| 70***10 | Seal, Oil | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Power Train : Transmission Support
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 2 |
S6d105-1f Engine S/N 18302-Up
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Additional Fuel Filter
| 07***12 | Gasket,Mechanical Pump Piping | 2 |
| 60***00 | Fuel Filter Ass'Y | 1 |
| 60***20 | Cartridge,Pref | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Air Cleaner
| 01***08 | Nut,R.H. Thread | 8 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 8 |
| 01***16 | Washer,Radio Controlled Slag Handling | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Air Cleaner Oil Bath Type And Pre-Cleaner(#60844-)
| 01***35 | Bolt,(Not Shown) | 1 |
| 01***70 | Nut,Wing | 1 |
| 01***08 | Nut,R.H. Thread | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Air Compressor
| 61***11 | Air Compressor Ass'Y,(See Fig.621) | 1 |
| 61***12 | Air Compressor Ass'Y | 1 |
| DK***00 | Cylinder | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Air Compressor And Piping
| 04***16 | Key, Lever Mounting | 1 |
| 07***12 | Gasket,(Without Air Compressor Type) (K2) | 4 |
| 07***16 | Gasket,Air Compressor Piping | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Air Intake Manifold And Connection(#18302-18810)
| 01***20 | Bolt | 2 |
| 01***50 | Bolt,(For Trimming Dozer) | 2 |
| 01***65 | Bolt,(For Alternator Bracket Mount) | 10 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Air Intake Manifold And Connection(#18811-)
| 01***20 | Bolt | 2 |
| 01***50 | Bolt,(For Trimming Dozer) | 2 |
| 01***65 | Bolt,(For Alternator Bracket Mount) | 10 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Alternator (25a)(#18302-76825)
| 60***51 | Alternator A. (25a) | 1 |
| KD***30 | Holder,Brush | 1 |
| KD***60 | Pulley | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Alternator (25a)(#76826-)
| 60***30 | Alternator A. (25a),(With Non Hardening Pulley) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
| KD***70 | Bracket,Front | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Alternator And Mounting
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt | 1 |
| 01***30 | Bolt,(For Trimming Dozer) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Camshaft And Tappet
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
| 01***16 | Washer,(For Shipping) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Corrosion Resistor
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
| 01***30 | Bolt,(For France Noise Suppression) | 1 |
| 01***29 | Washer,Spring (Cold Weather Spec.) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Crankshaft
| 01***25 | Bolt - Rear Guard Mounting | 6 |
| 01***36 | Washer,Radio Controlled Slag Handling | 6 |
| 61***11 | Bolt,Nylock (K2) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Cylinder Block(#18302-49999)
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***75 | Bolt,(For 75a Alternator) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Cylinder Block(#50001-)
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***75 | Bolt,(For 75a Alternator) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Cylinder Head Cover(#18302-49999)
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
| 02***22 | Bolt | 3 |
| 02***22 | Bolt | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Cylinder Head Cover(#50001-)
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
| 02***22 | Bolt | 3 |
| 02***22 | Bolt | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Cylinder Head(#10001-)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
| 07***08 | Plug,(Without Oil Pressure Switch) | 7 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Exhaust Manifold And Turbocharger
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Flywheel And Flywheel Housing
| 01***40 | Bolt,(Dust And Dirt Protection) | 9 |
| 01***60 | Bolt, Trunnion Cap | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Front Cover
| 01***22 | Bolt,(Cold Terrain Spec.) | 4 |
| 01***25 | Bolt,(Without Auto Priming System) | 4 |
| 01***60 | Bolt,(Without Alternator Bracket) | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Fuel Filter(#18302-49999)
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
| 01***16 | Washer,Radio Controlled Slag Handling | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Fuel Filter(#50001-)
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
| 01***16 | Washer,Radio Controlled Slag Handling | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Fuel Injection Pump (Coupling)(#18302-49999)
| DK***00 | Bolt | 6 |
| DK***00 | Bolt | 1 |
| DK***30 | Coupling Ass'Y | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Fuel Injection Pump (Coupling)(#50001-)
| DK***70 | Coupling Ass'Y | 1 |
| DK***00 | Bolt | 1 |
| DK***00 | Nut | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Fuel Injection Pump (Feed Pump)
| DK***20 | Bolt, Joint | 1 |
| DK***20 | Pump,Priming | 1 |
| DK***00 | Spring,Piston | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Fuel Injection Pump (Governor) (1/2)(#18302-49999)
| DK***40 | Gasket,Air Compressor | 2 |
| DK***20 | Capsule,Spring | 1 |
| DK***00 | Nut,Cap | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Fuel Injection Pump (Governor) (1/2)(#50001-)
| DK***40 | Gasket,Air Compressor | 2 |
| DK***00 | Nut,Cap | 1 |
| DK***40 | Bolt | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Fuel Injection Pump (Governor) (2/2)(#18302-49999)
| DK***00 | Adapter | 1 |
| DK***80 | Nut | 1 |
| DK***00 | Spring | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Fuel Injection Pump (Governor) (2/2)(#50001-)
| DK***00 | Adapter | 1 |
| DK***80 | Nut | 1 |
| DK***00 | Nut,Lock | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Fuel Injection Pump (Pump)(#18302-49999)
| 61***00 | Injection Pump Ass'Y | 1 |
| DK***10 | Washer,Spring | 1 |
| DK***00 | Shim Ass'Y | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Fuel Injection Pump (Pump)(#50001-)
| 61***00 | Injection Pump Ass'Y | 1 |
| DK***10 | Washer,Spring | 1 |
| DK***00 | Shim Ass'Y | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Fuel Injection Pump And Piping
| 01***70 | Bolt | 4 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Gasket Kit
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
| 07***45 | O-Ring,(F4320-61a0 -16 ), O-Ring; Was 07000-02145 | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Heater Signal And Regulator
| 60***70 | Switch,Air Intake Heater | 1 |
| 60***60 | Switch,Heater Relay | 1 |
| 60***70 | Signal,Heater | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Lubricating Oil Cooler(#18302-49999)
| 01***25 | Bolt,(Without Auto Priming System) | 5 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***35 | Bolt,(Without Auto Priming System) | 16 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Lubricating Oil Cooler(#50001-)
| 01***25 | Bolt,(Without Auto Priming System) | 5 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***35 | Bolt,(Without Auto Priming System) | 16 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Lubricating Oil Filter
| 01***85 | Bolt | 1 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Lubricating Oil Pump And Suction Pipe(#18302-49999)
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Lubricating Oil Pump And Suction Pipe(#50001-)
| 01***25 | Bolt,(Without Auto Priming System) | 3 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***45 | Bolt,(S6d155-4b) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Muffler
| 01***40 | Bolt, Mount Retainer | 4 |
| 01***50 | Bolt | 4 |
| 01***08 | Nut | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Nozzle Holder
| 01***55 | Bolt,(For Trimming Dozer) | 12 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 12 |
| 07***12 | Gasket,Mechanical Pump Piping | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Oil Pan
| 01***22 | Bolt,(Cold Terrain Spec.) | 29 |
| 01***25 | Bolt,(Without Auto Priming System) | 8 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Piston And Connecting Rod
| 04***18 | Ring, Retaining | 2 |
| 61***40 | Crank Pin Metal A | 6 |
| 61***00 | Connecting Rod Ass'Y | 6 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Rocker Arm
| 01***80 | Bolt,(Shim 5 Pieces Over) | 2 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 12 |
| 01***36 | Washer,Radio Controlled Slag Handling | 6 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Starting Motor (1/2) (5.5kw) (Tropical Sandy? Dusty Spec.)(#18302-81469)
| 60***51 | Starting Motor Ass'Y,(5.5kw) | 1 |
| KD***10 | Clutch Ass'Y,Over Running | 1 |
| KD***01 | O-Ring | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Starting Motor (1/2) (5.5kw)(#18302-81469)
| 60***43 | Starting Motor A.,(5.5kw) (See Fig.0661) | 1 |
| KD***10 | Clutch Ass'Y,Over Running | 1 |
| KD***01 | O-Ring | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Starting Motor (1/2) (5.5kw)(#81470-)
| 60***80 | Starting Motor Ass'Y,(5.5kw) | 1 |
| KD***30 | Bracket,Center | 1 |
| KD***50 | O-Ring | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Starting Motor (2/2) (5.5kw) (Tropical Sandy? Dusty Spec.)(#18302-81469)
| KD***01 | Washer,Seal | 2 |
| KD***80 | Shift Lever Ass'Y | 1 |
| KD***30 | Contactor,Moving | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Starting Motor (2/2) (5.5kw)(#18302-81469)
| KD***01 | Washer,Seal | 2 |
| KD***80 | Shift Lever Ass'Y | 1 |
| KD***30 | Contactor,Moving | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Starting Motor (2/2) (5.5kw)(#81470-)
| KD***50 | O-Ring | 1 |
| KD***30 | Cap, Gum | 1 |
| KD***10 | Ring,Clip | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Starting Motor And Mounting
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 3 |
| 01***36 | Washer,Radio Controlled Slag Handling | 3 |
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Turbocharger (Except Japan)
| 61***01 | Turbocharger Ass'Y | 1 |
| 61***00 | Turbocharger Ass'Y,(T04b-59) | 1 |
| GA***04 | Rotor Ass'Y | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Turbocharger Lubricating Oil Piping
| 01***22 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Water Pump And Cooling Fan
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***30 | Bolt,(For France Noise Suppression) | 6 |
Komatsu : Gd505a-2(S/N 50003-Up) : S6d105-1f Engine S/N 18302-Up : Water Separator
| 07***60 | O-Ring,(For Pc750?800?1800) (A2610) | 1 |
| 60***60 | Plug,Drain (4d105-5h? 4d105-5t) | 1 |
| 60***00 | Water Separator A.,(See Fig.2415) | 1 |
Steering System
Komatsu : Gd505a-2(S/N 50003-Up) : Steering System : Front Axle (1/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***45 | Screw | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Steering System : Front Axle (2/2)
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 6 |
| 01***10 | Nut,Lock | 1 |
| 01***18 | Nut | 20 |
Komatsu : Gd505a-2(S/N 50003-Up) : Steering System : Steering Cylinder
| 01***13 | Nut | 1 |
| 04***30 | Pin,Cotter | 1 |
| 04***18 | Ring, Snap | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Steering System : Steering Piping (1/2)(#50003-50005)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***25 | Bolt,(For Automatic) | 3 |
| 01***30 | Bolt | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Steering System : Steering Piping (1/2)(#50006-50017)
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Steering System : Steering Piping (1/2)(#50018-)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
| 07***38 | O-Ring, (Without Emergency Steering) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Steering System : Steering Piping (2/2)(#50006-)
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Steering System : Steering Pump
| 04***18 | Ring, Retaining | 1 |
| 70***10 | Pump Ass'Y | 1 |
| 70***10 | Seal, Oil | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Steering System : Steering Wheel
| 01***40 | Screw | 4 |
| 01***11 | Nut - Mounting | 1 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Steering System : Tie Rod
| 01***40 | Bolt, Mount Master Brake Cylinder | 4 |
| 01***60 | Bolt, Tube To Oil Cooler | 2 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 4 |
Tandem Drive And Wheels
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Air Governor (Std? For Japan) (Op? Except Japan)
| 23***10 | Governor Ass'Y,Air (Op) | 1 |
| 38***-1 | Screw,Adjusting | 1 |
| 38***-1 | Seat,Spring | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Brake Master Cylinder (Except Japan)
| 01***12 | Bolt,(With Cylinder Cover) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***95 | Bolt,(For 2nd Travel Speed) (Op) | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Brake Pedal (Except Japan)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***40 | Bolt, Mount Master Brake Cylinder | 1 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Brake Piping (1/2) (Std? For Japan) (Op? Except Japan)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Brake Piping (2/2) (Std? For Japan) (Op? Except Japan)
| 01***30 | Bolt,(For Mechanical Governor) | 9 |
| 01***35 | Bolt,(For Position Fixing) | 2 |
| 01***55 | Bolt,(10m) | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Brake Piping (Except Japan)
| 01***16 | Bolt (With Air Heater & Conditioner) | 5 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 16 |
| 01***10 | Nut (K10) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Brake Vacuum Piping (Except Japan)
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 6 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Brake Valve (Std? For Japan) (Op? Except Japan)
| 01***25 | Bolt,(For Automatic) | 4 |
| 01***22 | Bolt,(10m) | 3 |
| 01***10 | Screw,(For Wiper Switch Earth) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Final Drive Case
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Final Drive Gear
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 6 |
| 01***40 | Bolt,(With Service Valve R.H.) | 12 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Hydromaster (Except Japan)(#50003-50282)
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
| 23***00 | Hydromaster Ass'Y | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Hydromaster (Except Japan)(#50283-)
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
| 23***01 | Hydromaster Ass'Y | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Parking Brake
| 01***30 | Bolt-Hex, Bolt,(With Center Guard) | 6 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 1 |
| 01***42 | Washer,Spring (For Pedal Steering), Washer-Spring | 6 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Parking Brake Control Lever
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 6 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Propeller Shaft
| 01***45 | Bolt,(With Water Separator Type) | 8 |
| 01***60 | Bolt,For Weight Adjusting Bolt | 8 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 8 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Relay Valve (Std? For Japan) (Op? Except Japan)
| 56***60 | Valve (Kit) | 1 |
| 56***70 | Ring,Retaining (Kit) | 1 |
| 56***80 | O-Ring (Kit) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Tandem Drive Case? (Except Japan)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 16 |
| 01***36 | Wahser-Spring, Washer,Spring (Without Towing Winch) | 16 |
| 07***22 | O-Ring,(See Fig.Y1852-01a0) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Tandem Drive Case? (Std? For Japan) (Op? Except Japan)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 16 |
| 01***36 | Wahser-Spring, Washer,Spring (Without Towing Winch) | 16 |
| 07***22 | O-Ring,(See Fig.Y1852-01a0) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Tandem Drive Gear And Chain (Except Japan)
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 6 |
| 01***40 | Bolt,(With Center Guard) | 24 |
| 01***14 | Nut (Op) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Tandem Drive Gear And Chain (Std? For Japan) (Op? Except Japan)
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 6 |
| 01***35 | Bolt, Hydraulic Tank Mounting | 8 |
| 01***40 | Bolt,(With Center Guard) | 12 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Tire Chain
| 23***10 | Tire Chain Ass'Y,Front | 2 |
| 23***20 | Tire Chain Ass'Y,Rear | 4 |
| 23***12 | Chain | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Wheel
| 23***00 | Wheel Ass'Y,Front? R.H. And Rear? L.H | 3 |
| 23***10 | Wheel Ass'Y,Front? L.H. And Rear? R.H | 3 |
| 23***60 | Wheel Ass'Y,Front? R.H. And Rear? L.H | 3 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tandem Drive And Wheels : Wheel Brake (Except Japan)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 40 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 40 |
| 01***32 | Washer,(With Auto Emergency Steering) | 40 |
Tool And Kit
Komatsu : Gd505a-2(S/N 50003-Up) : Tool And Kit : Serive Kit
| 07***14 | O-Ring,(F4350-63a1a-2 ) | 9 |
| 07***30 | O-Ring, Cover - Transfer Gear | 2 |
| 07***40 | O-Ring,(F2310-52a1 -12 ) | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Tool And Kit : Tool
| 01***70 | Bolt,Leaning Lock | 1 |
| 07***70 | Tube,Vinyl | 1 |
| 07***00 | Pump,Grease | 1 |
Work Equipment
Komatsu : Gd505a-2(S/N 50003-Up) : Work Equipment : Bank Cutting Control System
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
Komatsu : Gd505a-2(S/N 50003-Up) : Work Equipment : Blade And Circle Support
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 5 |
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 4 |
Komatsu : Gd505a-2(S/N 50003-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 : Gd505a-2(S/N 50003-Up) : Work Equipment : Circle Reverse Gear (1/2)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 12 |
| 01***40 | Bolt,(With Service Valve R.H.) | 8 |
| 01***55 | Bolt,(Without Rops Guard? Canopy) | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Work Equipment : Circle Reverse Gear (2/2)
| 01***20 | Bolt,(With Auto Emergency Steering) | 1 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
| 01***55 | Bolt | 6 |
Komatsu : Gd505a-2(S/N 50003-Up) : Work Equipment : Drawbar
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***35 | Bolt,(Without Scarifier) | 8 |
| 01***70 | Bolt | 4 |
Komatsu : Gd505a-2(S/N 50003-Up) : Work Equipment : Scarifier (Std? For Japan) (Op? Except Japan)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***65 | Bolt,(With Canvas Or Rops Canopy) | 8 |
| 01***70 | Bolt,Rear Carrier (With Gumpad) | 2 |
Komatsu : Gd505a-2(S/N 50003-Up) : Work Equipment : Scarifier Lifter (Std? For Japan) (Op? Except Japan)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***90 | Bolt | 4 |
| 01***60 | Bolt, Mount Pole | 2 |
Frequently asked questions
What engine powers the Komatsu GD505A-2 (S/N 50003-up)?
A Komatsu S6D105-1F, a six-cylinder turbocharged diesel with mechanical fuel injection and no electronic engine control, producing about 96.9 kW (130 hp) from 6.49 L displacement.
What is the operating weight of the GD505A-2?
Standard operating weight is about 10,880 kg (23,986 lb), typical for a mid-size grader in this power class.
What replaced the Komatsu GD505A-2?
Komatsu continued the platform through a later GD505A-3 revision before eventually folding the model line into the renumbered GD511A-1 grader family, which moved to electronically controlled engines in the 2000s.
What GD505A-2(S/N 50003-UP) owners discuss
What do owners say about the S6D105-1F engine's day-to-day quirks on this grader?
It is a mechanically governed, in-line-injection-pump turbo diesel with no engine electronics, so there are no fault codes to chase — power complaints almost always trace back to fuel filtration, injector condition, or pump timing rather than a sensor. The most repeated cold-weather complaint is white exhaust smoke on start-up from unburned fuel, which should clear within a minute or so of idle warm-up once the block comes up to temperature. Persistent smoke past that window, rough idle, or hard starting in cold weather is usually pump/injector wear, not a design flaw. Because injection timing and pump condition affect both emissions and power delivery, have your dealer verify pump timing and injector spray pattern before doing major engine work based on smoke alone.
How does the hydroshift transmission hold up with age, and what wears first?
The power-shift transmission is generally regarded as durable when serviced on schedule, but clutch packs are the wear item operators flag most, especially on machines shuttle-shifted hard without a pause in neutral. Typical symptoms are a flare or slip on an upshift, delayed gear engagement, or the transmission running hot during sustained ditching or heavy cutting passes. Skipped or stretched transmission fluid and filter changes are the most commonly cited cause of premature clutch wear on this class of hydroshift box — staying on the service interval matters more than gentle operation alone. Because the shift linkage ties into the machine's neutral-start safety interlock, have your dealer verify the interlock and modulation circuit if engagement feels harsh or delayed rather than adjusting it in the field.
Is circle and drawbar wear something to worry about on this machine?
This is treated as routine wear on graders in this class, not a defect specific to this model. The circle guide shoes, drawbar ball stud, and moldboard slide rails are the parts that take the daily abuse, and play in any of them shows up first as chatter or wander in the blade before it shows up as an out-of-tolerance grade. Composite wear strips and ball-stud shims are meant to be adjusted and replaced as a normal service item — daily greasing and periodic shim take-up keep the tolerance stack under control. Owners who let this slide report it compounds fast, since a small amount of play at several joints adds up across the length of the moldboard.
What about the tandem housings and final drives — any known wear pattern?
Tandem cases and final drives on machines of this vintage are generally filled with engine-weight oil rather than gear oil, consistent with Komatsu practice on comparable-era equipment, though the exact spec should be confirmed against the machine's own service literature. The pattern owners describe is a slow oil level drop signaling a worn seal, and running low on oil is what accelerates bearing and gear wear rather than load alone. A quick check of tandem oil condition and level is treated as cheap insurance during routine service. Because tandem housings carry the machine's working weight, if you find metal in a drained sample, have your dealer verify internal wear before the grader goes back to work.
What electrical issues come up on a machine this old, since there's no engine ECU?
With no electronic engine or transmission controls, the electrical system is limited to charging, starting, lighting, and analog gauge senders — so "electrical gremlins" on this machine mean corroded grounds and tired connectors after decades of service, not sensor faults. Intermittent gauge readings or a charge light that won't behave are most often traced to a bad ground or a corroded connector rather than a failed component. The alternator's interlock wiring needs to match Komatsu's original wiring scheme when anything gets reconnected after service, or the charge circuit will act erratically. Most of these fixes are cleaning and reseating connections rather than parts replacement.
How does the hydraulic system behave as these machines age?
A single hydraulic pump feeds a multi-spool control valve driving blade lift, the circle drive motor, and the articulation/steering cylinders. The common complaint on older units is sluggish or spongy blade and circle response, which owners trace to worn cylinder seals or a pump losing output over the years rather than a valve problem. Response that stays soft after seals are addressed points to the pump itself. Because steering and articulation hydraulics are safety-critical, have your dealer verify pump output pressure and steering-circuit relief settings if response feels delayed or soft before returning the grader to regular work.
What should I check before buying a used GD505A-2 in this serial range?
Confirm the serial plate falls within the 50003-and-up production break for this configuration, since earlier-run machines can differ in hydraulic and drivetrain details. Walk the cylinders — blade lift, circle drive, and articulation/steering — for seal weeping, and check the circle and drawbar for play or chatter before moving the blade. Cold-start the engine and watch for smoke duration and listen for injection knock, then run the hydroshift through every gear watching for slip or delayed engagement. Pull a tandem/final drive oil sample if possible and check level and condition. Given the machine's age, expect wear-item costs — hoses, seals, wear strips — as normal ownership expense rather than treating them as deal-breakers, but ask for service records showing fuel and hydraulic filter intervals were kept current.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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