Komatsubulldozersmall ( - d39)
Komatsu D21A-7(S/N 75001-78603-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu D21A-7 is a compact crawler tractor designed for utility earthmoving, grading, and trimming applications. This machine belongs to the Dash-7 generation and features a 4D95S engine delivering 40 hp (29.8 kW) at 2450 rpm. Operating within a weight class of approximately 3600 kg (7936.7 lb), it utilizes a hydrostatic (HS) transmission with two forward and two reverse gears. The series is characterized by its versatile configuration, often utilized in trimming or C.I.S. roles depending on the specific serial range.
Across the D21 series generations, advancements focused on emissions compliance and hydraulic efficiency. While earlier models preceded it, the Dash-7 represents a stabilized era of technology before the transition to more complex emission systems in later dash-numbers. Today, this machine remains highly relevant in the secondary market due to its robust 4D95S powertrain and the availability of standardized undercarriage components. Its compact footprint makes it a primary choice for jobsite accessibility where larger dozers cannot operate.
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 D21A-7(S/N 75001-78603-UP) specifications
Engine
| Engine Model | 4D95S |
| Number of Cylinders | 4 |
| Gross Power | 40 hp (29.8 kW - 29.9 kW) |
| Power Measured @ RPM | 2450 rpm |
| Displacement | 164.2 cu in (2.7 L / 2690.8 cc) |
Weights
| Operating Weight | 7936.7 lb (3600 kg) |
Dimensions
| Length w/ Blade | 11.16 ft in (3400 mm / 3 m) |
| Length w/o Blade | 8.4 ft in (2560 mm / 2.56 m) |
| Width Over Tracks | 5.29 ft in (1610 mm / 161.5 cm) |
| Height To Top of Cab | 8.13 ft in (2475 mm / 249.9 cm) |
| Length of Track on Ground | 5.53 ft in (1685 mm / 170.7 cm) |
| Ground Clearance | 0.97 ft in (295 mm / 30.5 cm) |
| Track Gauge | 4.3 ft in (1310 mm / 131.1 cm) |
| Standard Shoe Size | 11.82 in - 12 in (300 mm - 30.2 cm) |
| Track Pitch | 5.32 in (135 mm - 13.7 cm) |
Performance
| Transmission Type | Hydrostatic (HS) |
| Number of Forward Gears | 2 |
| Number of Reverse Gears | 2 |
| Track Rollers Per Side | 5 |
Blades
| Standard Blade Width | 7.2 ft in (2170 mm / 2 m) |
| Standard Blade Height | 23.3 in (590 mm / 59 cm) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
D21A-7(S/N 75001-78603-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine Crankcase (w/ filter) | 12.5 L | 10w/30 or 15w/40 Engine Oil; 10w/30 Low Saps for specific requirements; 15w/40 E9 Top Tier Multi Grade (Mineral Oil) or E7/E9 available per aftermarket supplier specs |
| Cooling System | not documented for this exact serial range — verify with your dealer | Antifreeze Blue Concentrate or Red OAT 5 Year Antifraz |
| Fuel Tank | not documented for this exact serial range — verify with your dealer | |
| Transmission/Powertrain (Hydrostatic) | not documented for this exact serial range — verify with your dealer | 10w or 30w Transmission Fluid; Universal Transmission Oil |
| Final Drives (each) | not documented for this exact serial range — verify with your dealer | 80w/90 GL4 or GL5 Gear Oils; 80w90 EP GL5 |
| Hydraulic System/Tank | not documented for this exact serial range — verify with your dealer | ISO HLP 32, ISO 4、6, or ISO HLP 68; HVI 46 Oil; 10w or 20w Hydraulic Oil |
| Grease | not documented for this exact serial range — verify with your dealer |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu D21A-7(S/N 75001-78603-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the D21A-7(S/N 75001-78603-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Monitor engine oil quality using 15w40 or 10w30 grades to detect early fuel dilution. Regularly sample hydraulic oil to identify particulate contamination that could damage the hydrostatic transmission components. Track changes in drive motor fluid levels and check for moisture in the fuel system. Consistent analysis of these fluids prevents catastrophic failure of the engine and maintains optimal hydraulic response during heavy trimming tasks.
Corrective & Common Repairs
Address steering deviations immediately, as issues in the left or right track engagement often stem from hydraulic control malfunctions or clutch-related wear. If the machine experiences loss of power, inspect for engine controller failures or sensor abnormalities. Monitor the undercarriage for sprocket and bushing wear, which can lead to significant tracking issues. Promptly replace worn pins or bushings to prevent excessive track pitch elongation and maintain proper machine geometry.
Overhaul & Rebuild Points
Plan major interventions around the 2000-hour mark, focusing on the hydrostatic transmission clutch material and final drive components. When rebuilding the engine, ensure all cylinder head gaskets and fuel injectors are replaced to restore factory compression. Comprehensive undercarriage overhałs should include new track rollers, idlers, and shoes to return the machine to its original operating weight and ground pressure specifications.
Seasonal & Environment Servicing
In sandy or dusty environments, prioritize frequent cleaning of the radiator and air intake grids to prevent overheating. During cold weather operations, ensure engine block heaters are functional and use appropriate viscosity oils for easier starting. In high-moisture conditions, inspect all electrical connections and sensor wiring for corrosion to prevent fault codes related to signal loss or short circuits in the machine's control system.
D21A-7(S/N 75001-78603-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 600-311-1190 | Plate? Caution,Fuel Filter | Fuel system service | Check fitment → |
| 09637-90263 | Plate? Instruction,Air Cleaner Element Mainte | Air intake service | Check fitment → |
| 09637-30161 | Plate? Instruction,Air Cleaner (Single Element) | Air intake service | Check fitment → |
| 09637-30163 | Plate? Instruction,Air Cleaner (Single Element) | Air intake service | Check fitment → |
| 09637-30262 | Plate? Instruction,Air Cleaner (Double Element) | Air intake service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
D21A-7(S/N 75001-78603-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E10 | Engine controller power malfunction | Faulty ECM power connections, blown fuses, or improper grounding | Inspect ECM power connections, fuses, or ground wires |
| E11 | Engine protection—output power reduced | High coolant temperature, low oil pressure, or restricted air intake | Check coolant temperature, oil pressure, and air filter |
| E15 | Engine sensors fault | Malfunction in temperature, fuel pressure, or oil pressure sensors | Inspect engine sensors and associated wiring |
| AA10NX | Air cleaner clogging | Accumulated dust or debris in the air filter element | Replace the air filter |
| EOE | Network failure | Communication error within the machine's electronic network | Verify controller communication and wiring integrity |
| 989L00 | Engine controller lock warning (Mode 1) | Security or software lockout activation | Consult service manual for controller reset procedures |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
D21A-7(S/N 75001-78603-UP) attachments & work tools
Blades
Standard blade width is 2.17 m (7.2 ft) with a height of 0.59 m (23.3 in). Available configurations include C-frame, PAT dozer blades, and various cutting edges.
Rippers
Ripper attachments are available for this model. Specific single-shank or multi-shank weight and configuration details are not documented for this exact serial range.
Winches
Not documented for this exact serial range — verify with your dealer.
Drawbars/counterweights
Not documented for this/this exact serial range — verify with your dealer.
Cab/ROPS guarding options
Work equipment control components such as attachment levers and knobs are available for PAT dozer configurations. Specific forestry or waste guarding options are not documented for this exact serial range.
Hydraulic arrangement notes
The machine utilizes a hydrostatic (HS) transmission. Hydraulic oil capacity is identified via dipstick, and the system uses Komatsu HYDO/EO compatible fluids.
All D21A-7(S/N 75001-78603-UP) assemblies by section
Every catalogued assembly group for the Komatsu D21A-7(S/N 75001-78603-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
4d95s-1j S/N 124813-Up
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Air Cleaner
| 01***16 | Bolt,(With Alternator Cover Type) | 2 |
| 01***06 | Nut | 6 |
| 04***10 | Ring,See Fig. K4010-65a0 | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Air Intake Manifold
| 01***65 | Stud | 1 |
| 01***12 | Bolt,(With Speedometer) | 4 |
| 01***65 | Bolt,(With Water Separator) | 5 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Air Intake Manifold (With Pre-Cleaner)(#162320-)
| 01***65 | Stud | 1 |
| 01***65 | Bolt,(With Water Separator) | 5 |
| 01***75 | Bolt,(For Shipping) | 6 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Air Intake Manifold (With Water Separator)
| 01***75 | Stud | 1 |
| 01***12 | Bolt,(With Speedometer) | 4 |
| 01***65 | Bolt,(With Water Separator) | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Alternator (15a) (Inner Parts)
| 60***50 | Alternator A. (15a) | 1 |
| KD***70 | Cover | 1 |
| KD***30 | Retainer | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Alternator (25a) (Inner Parts)(#163446-)
| 60***20 | Alternator A. (25a),(With Non Hardening Pulley) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
| KD***11 | Rear Bracket Ass'Y | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Alternator Mounting (15a)
| 01***25 | Bolt,(With Corrosion Resistor) | 1 |
| 01***55 | Bolt,(With Engine Stop Motor Type) | 1 |
| 01***06 | Nut | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Alternator Mounting (25a)(#163446-)
| 01***35 | Bolt | 1 |
| 01***55 | Bolt,(With Engine Stop Motor Type) | 1 |
| 01***11 | Nut,(For Center Guard) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Block Heater (Cold Terrain Spec.)
| 01***25 | Bolt,(With Corrosion Resistor) | 4 |
| 60***90 | Heater,Water | 1 |
| 62***10 | Gasket,Plate (Except Japan) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Camshaft And Tappet
| 01***20 | Screw | 2 |
| 04***16 | Fitting Wedge | 1 |
| 62***31 | Thrust Washer | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Cooling Fan
| 01***25 | Bolt,(With Corrosion Resistor) | 4 |
| 01***30 | Bolt,(Water Separator Spec.) | 4 |
| 60***40 | Fan,Cooling | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Crank Pulley
| 01***35 | Bolt | 1 |
| 61***20 | Bolt | 1 |
| 62***40 | Pulley?Non Hardening,Crank (For Trimming Dozer) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Crankshaft
| 62***00 | Crankshaft Ass'Y | 1 |
| 62***00 | Main Metal Ass'Y | 5 |
| 62***00 | Thrust Metal Ass'Y | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Cylinder Block
| 04***20 | Pin,Dowel (Welded) | 2 |
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 2 |
| 04***08 | Adapter Sleeves | 6 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Cylinder Block (Cold Terrain Spec.)
| 04***20 | Pin,Dowel (Welded) | 2 |
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 2 |
| 04***08 | Adapter Sleeves | 6 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Cylinder Block Cover
| 01***14 | Bolt | 2 |
| 61***20 | Gasket,Plate | 1 |
| 62***10 | Plate | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Cylinder Block Cover (Cold Terrain Spec.)
| 01***14 | Bolt | 2 |
| 61***20 | Gasket,Plate | 1 |
| 62***10 | Plate | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Cylinder Block Gasket Kit(#.-)
| 01***12 | Washer,Lock (Noise Suppression Spec.) (K2) | 1 |
| 01***12 | Washer,Lock? Injection Gear | 1 |
| 07***18 | O-Ring,(See Fig.1601-29?1602-17) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Cylinder Block Gasket Kit(#124813-.)
| 07***65 | O-Ring,Injection Pump Case | 1 |
| 07***95 | O-Ring,Transmission Strainer | 1 |
| 07***35 | O-Ring,Hydraulic Oil Filter | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Cylinder Head
| 01***32 | Washer, (Without Emergency Steering) | 17 |
| 02***04 | Plug, Pipe | 1 |
| 07***10 | Plug, Expansion | 9 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Cylinder Head Gasket Kit(#.-)
| 07***90 | O-Ring,(Dk029369-0020) (K2) | 1 |
| 07***40 | O-Ring,Water Pump Mount | 1 |
| 08***14 | Band,(For Additional Fuel Strainer) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Cylinder Head Gasket Kit(#124813-.)
| 07***40 | O-Ring,Water Pump Mount | 1 |
| 08***14 | Band,(For Additional Fuel Strainer) | 1 |
| 08***19 | Band,(Without Air Conditioner) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Engine Mounting
| 01***55 | Bolt,(See Service News) | 8 |
| 01***45 | Bolt, Bracket Mounting | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 8 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Exhaust Manifold
| 01***25 | Grub Screw | 4 |
| 01***45 | Bolt, Bracket Mounting | 7 |
| 61***50 | Nut | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Exhaust Manifold (With Spark Arrester And Catalyzer Type)
| 01***25 | Grub Screw | 4 |
| 01***45 | Bolt, Bracket Mounting | 5 |
| 61***50 | Nut | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Flywheel
| 01***30 | Bolt | 6 |
| 06***04 | Bearing,Ball | 1 |
| 62***93 | Gear,Ring | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Flywheel Housing
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 11 |
| 61***32 | Seal? Rear (K2) | 1 |
| 62***70 | Housing,Flywheel | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Front Cover
| 01***10 | Bolt | 1 |
| 01***16 | Bolt | 2 |
| 01***20 | Bolt,(With Tachometer Outlet) | 6 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Front Cover (Without Cover)
| 01***10 | Bolt | 1 |
| 01***16 | Bolt | 2 |
| 01***16 | Screw | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Front Hanger
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 62***30 | Hanger,Front (W/O Corrosion Resistor) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Front Power Take Off (For 13a? 25a Alternator)(#136990-)
| 06***07 | Bearing,Roller | 1 |
| 61***60 | Bearing,Ball | 1 |
| 62***00 | Shaft Ass'Y,Power Take Off | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Front Power Take Off (For 15a Alternator)
| 06***07 | Bearing,Roller | 1 |
| 61***60 | Bearing,Ball | 1 |
| 62***60 | Distance Piece | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Filter(#124813-157192)
| 01***65 | Bolt,(With Water Separator) | 2 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 6 |
| 07***14 | Bolt,Joint | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Filter(#157193-)
| 01***65 | Bolt,(With Water Separator) | 2 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 6 |
| 07***14 | Bolt,Joint | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Injection Pump (Feed Pump) (Inner Parts)
| DK***20 | Bolt, Joint | 1 |
| DK***00 | Valve,Check | 2 |
| DK***20 | Pump,Priming | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Injection Pump (Feed Pump) (Inner Parts) (For Japan) (Noise Suppression Spec. For Ec.)
| DK***20 | Bolt, Joint | 1 |
| DK***00 | Valve,Check | 2 |
| DK***20 | Pump,Priming | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Injection Pump (Governor) (1/2) (Inner Parts)
| DK***00 | Shim? 2.00mm,(High Altitude Spec.) | 0 |
| DK***00 | Adapter | 1 |
| DK***30 | Governor Ass'Y | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Injection Pump (Governor) (1/2) (Inner Parts) (For Japan) (Noise Suppression Spec. For Ec.)
| DK***00 | Shim? 2.00mm,(High Altitude Spec.) | 0 |
| DK***00 | Adapter | 1 |
| DK***80 | Nut | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Injection Pump (Governor) (2/2) (Inner Parts)
| DK***00 | Spring,Governor | 1 |
| DK***20 | Lever | 1 |
| DK***40 | Gasket,Air Compressor | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Injection Pump (Governor) (2/2) (Inner Parts) (For Japan) (Noise Suppression Spec. For Ec.)
| DK***00 | Spring,Governor | 1 |
| DK***20 | Lever | 1 |
| DK***40 | Gasket,Air Compressor | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Injection Pump (Pump) (1/2) (Inner Parts)
| 62***60 | Injection Pump Ass'Y | 1 |
| DK***30 | Bearing | 0 |
| DK***20 | Shim, 1.40mm; Was Dk029311-7220, Shim? 1.4mm | 0 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Injection Pump (Pump) (1/2) (Inner Parts) (For Japan) (Noise Suppression Spec. For Ec.)
| 62***50 | Injection Pump Ass'Y | 1 |
| DK***30 | Bearing | 0 |
| DK***20 | Shim, 1.40mm; Was Dk029311-7220, Shim? 1.4mm | 0 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Injection Pump (Pump) (2/2) (Inner Parts)
| DK***40 | Shim? 0.50mm, Shim, 0.50mm; Was Dk029311-0040 | 0 |
| DK***90 | Shim? 0.25mm, Shim, 0.25mm; Was Dk029311-0590 | 0 |
| DK***20 | Plunger Ass'Y | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Injection Pump (Pump) (2/2) (Inner Parts) (For Japan) (Noise Suppression Spec. For Ec.)
| DK***40 | Shim? 0.50mm, Shim, 0.50mm; Was Dk029311-0040 | 0 |
| DK***90 | Shim? 0.25mm, Shim, 0.25mm; Was Dk029311-0590 | 0 |
| DK***20 | Plunger Ass'Y | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Injection Pump Lubricator
| 07***12 | Gasket,(Without Air Compressor Type) (K2) | 2 |
| 07***10 | Screw, Banjo Connector (M10-1.25x20) | 1 |
| 62***30 | Pipe,Oil | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Injection Pump Mounting
| 01***35 | Grub Screw | 4 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
| 01***16 | Bolt,(With Alternator Cover Type) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Injection Pump Mounting (For Japan) (Noise Suppression Spec. For Ec.)
| 01***35 | Grub Screw | 4 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
| 01***16 | Bolt,(With Alternator Cover Type) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Injection Pump Piping
| 01***12 | Bolt | 2 |
| 01***25 | Screw | 2 |
| 62***10 | Tube,Injection? No.1 | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Return(#124813-157192)
| 04***10 | Clip | 2 |
| 07***21 | Tube,Spill | 1 |
| 07***85 | Clip | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Fuel Return(#157193-)
| 04***08 | Clip | 1 |
| 07***00 | Clip | 1 |
| 62***10 | Cover | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Glow Plug
| 60***40 | Glow Plug,Glow | 4 |
| 62***10 | Lead | 3 |
| 62***11 | Wire | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Head Cover
| 01***14 | Screw | 1 |
| 01***25 | Bolt,(With Corrosion Resistor) | 1 |
| 04***50 | Screw | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Head Cover (With Water Separator)
| 01***14 | Screw | 1 |
| 01***25 | Bolt,(With Corrosion Resistor) | 1 |
| 04***50 | Screw | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Heater Signal
| 60***61 | Signal,Heater | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Idler Gear
| 01***70 | Bolt,(For 75a Alternator) | 1 |
| 04***20 | Ring, Snap | 1 |
| 06***06 | Bearing,Roller | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Inhibtor
| 60***20 | Inhibitor | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Injection Nozzle(#124813-157192)
| 01***35 | Bolt, Mount Bracket To Floor | 4 |
| 07***00 | Clip | 8 |
| 62***00 | Nozzle Holder Ass'Y | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Injection Nozzle(#157193-)
| 01***35 | Bolt, Mount Bracket To Floor | 4 |
| 07***00 | Clip | 9 |
| 62***00 | Nozzle Holder Ass'Y | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Muffler
| 01***12 | Bolt,(See Fig.0501) | 2 |
| 01***11 | Nut,(Spark Arrester Spec.) | 2 |
| 07***25 | Hose | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Muffler (Catalyzer Type)
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
| 01***90 | Bolt,(For Large Fan) | 2 |
| 01***16 | Bolt,(With Alternator Cover Type) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Muffler (For Japan) (Noise Suppression Spec. For Ec.)
| 01***16 | Bolt,(With Alternator Cover Type) | 1 |
| 01***11 | Nut,(Spark Arrester Spec.) | 1 |
| 61***80 | Gasket,Exhaust Manifold | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Muffler (With Spark Arrester Catalyzer Type)
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
| 01***90 | Bolt,(For Large Fan) | 2 |
| 01***16 | Bolt,(With Alternator Cover Type) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Muffler (With Spark Arrester)
| 01***16 | Bolt,(With Alternator Cover Type) | 1 |
| 61***80 | Gasket,Exhaust Manifold | 1 |
| 62***10 | Muffler | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Name Plate And Caution (Chinese)
| 09***61 | Plate? Instruction,(Chinese) (Not Shown) | 1 |
| 09***63 | Plate? Instruction,Air Cleaner Element Mainte | 1 |
| 60***20 | Plate? Caution,Oil Filter | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Name Plate And Caution (English)
| 09***61 | Plate? Instruction,Air Cleaner (Single Element) | 1 |
| 09***63 | Plate? Instruction,Air Cleaner (Single Element) | 1 |
| 60***30 | Plate? Caution,Oil Filter And Bypass Filter | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Name Plate And Caution (French)
| 09***62 | Plate? Instruction,Air Cleaner (Double Element) | 1 |
| 09***63 | Plate? Instruction,Air Cleaner Element Mainte | 1 |
| 60***90 | Plate? Caution,(French-English) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Name Plate And Caution (German)
| 09***61 | Plate? Instruction,(German-English) (Not Shown) | 1 |
| 09***63 | Plate? Instruction,Air Cleaner Element Mainte | 1 |
| 60***80 | Plate? Caution,(German-English) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Name Plate And Caution (Indonesian)
| 09***61 | Plate? Instruction,(Indonesian-English)(Not Shown | 1 |
| 09***63 | Plate? Instruction,(For Indonesia) | 1 |
| 60***50 | Plate? Caution,(Indonesian-English) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Name Plate And Caution (Italian)
| 09***61 | Plate? Instruction,(Italian-English) (Not Shown) | 1 |
| 09***63 | Plate? Instruction,(For Italian) | 1 |
| 60***20 | Plate? Caution,(Italian-English) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Name Plate And Caution (Russian)
| 09***63 | Plate? Instruction,Air Cleaner | 1 |
| 09***62 | Plate? Instruction,Air Cleaner (Double Element) | 1 |
| 60***50 | Plate? Caution,(Russian-English) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Name Plate And Caution (Spanish)
| 09***61 | Plate? Instruction,(Spanish-English) (Not Shown) | 1 |
| 09***63 | Plate? Instruction,(Spanish) (Not Shown) | 1 |
| 60***70 | Plate? Caution,Oil Filter And Bypass Filter | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Nozzle Holder (Inner Parts)(#124813-157192)
| 62***10 | Holder Ass'Y | 4 |
| DK***00 | Shim? 0.75mm | 0 |
| DK***00 | Shim? 1.200mm | 0 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Nozzle Holder (Inner Parts)(#157193-)
| 62***10 | Holder Ass'Y | 4 |
| DK***00 | Shim? 0.75mm | 0 |
| DK***00 | Shim? 1.200mm | 0 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Oil Filter
| 60***40 | Cartridge,Engine Oil Filter (D31s) | 1 |
| 60***41 | Cartridge,Engine Oil Filter (D31s) | 1 |
| 60***42 | Cartridge,Engine Oil Filter | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Oil Level Gauge (Cold Terrain Spec.)(#124813-163445)
| 01***95 | Bolt,(For Shipping) | 1 |
| 01***20 | Bolt,(For Japan Pc200) | 1 |
| 61***20 | Spacer,(For Shipping) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Oil Level Gauge (Cold Terrain Spec.)(#163446-)
| 01***95 | Bolt,(For Shipping) | 1 |
| 01***20 | Bolt,(For Japan Pc200) | 1 |
| 61***20 | Spacer,(For Shipping) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Oil Level Gauge(#124813-163445)
| 01***95 | Bolt,(For Shipping) | 1 |
| 01***20 | Bolt,(For Japan Pc200) | 1 |
| 61***20 | Spacer,(For Shipping) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Oil Level Gauge(#163446-)
| 01***95 | Bolt,(For Shipping) | 1 |
| 01***20 | Bolt,(For Japan Pc200) | 1 |
| 61***20 | Spacer,(For Shipping) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Oil Pan And Suction Tube (Cold Terrain Spec.)(#124813-163445)
| 01***16 | Bolt, Mount Solenoid Valve | 24 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
| 01***16 | Screw | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Oil Pan And Suction Tube (Cold Terrain Spec.)(#163446-)
| 01***16 | Bolt, Mount Solenoid Valve | 24 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
| 01***16 | Screw | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Oil Pan And Suction Tube(#124813-163445)
| 01***16 | Bolt, Mount Solenoid Valve | 24 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
| 01***16 | Screw | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Oil Pan And Suction Tube(#163446-)
| 01***16 | Bolt, Mount Solenoid Valve | 24 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
| 01***16 | Screw | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Oil Pressure Switch
| 08***05 | Switch,Engine Oil Pressure | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Oil Pressure Switch (Cold Terrain Spec.)
| 08***05 | Switch,Engine Oil Pressure | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Oil Pump
| 01***16 | Screw | 4 |
| 01***25 | Bolt,(With Corrosion Resistor) | 1 |
| 62***01 | Cover Ass'Y | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Oil Pump (Cold Terrain Spec.)
| 01***16 | Screw | 4 |
| 01***25 | Bolt,(With Corrosion Resistor) | 1 |
| 62***01 | Cover Ass'Y | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Piston
| 04***12 | Ring, Snap | 8 |
| 62***60 | Piston (S) | 4 |
| 62***60 | Piston (S) | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Rear Hanger
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 62***10 | Hanger,Rear | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Rocker Arm
| 01***65 | Bolt,(For Alternator Bracket Mount) | 5 |
| 61***30 | Circlip | 2 |
| 62***00 | Shaft Ass'Y | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Spare Parts (Cold Terrain Spec.)
| 04***47 | V-Belt,(With 25a Alternator) | 1 |
| 07***16 | Gasket,(For Pc750-6) (See Fig.A2110) | 1 |
| 60***41 | Cartridge,Engine Oil Filter (D31s) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Spare Parts (For 13a Alternator)
| 04***46 | V-Belt,Cooling Fan | 1 |
| 07***16 | Gasket,(For Pc750-6) (See Fig.A2110) | 1 |
| 60***41 | Cartridge,Engine Oil Filter (D31s) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Spare Parts (For 25a Alternator)(#163446-)
| 04***48 | V-Belt,(For 50a? 75a Alternator) | 1 |
| 07***16 | Gasket,(For Pc750-6) (See Fig.A2110) | 1 |
| 60***41 | Cartridge,Engine Oil Filter (D31s) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Spare Parts (Noise Suppression Spec. For Ec.)
| 07***16 | Gasket,(For Pc750-6) (See Fig.A2110) | 1 |
| 60***41 | Cartridge,Engine Oil Filter (D31s) | 1 |
| 62***10 | V-Belt,Fan Drive | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Starting Motor (2.8kw) (Inner Parts)(#124813-157192)
| 60***70 | Starting Motor Ass'Y,(2.8kw) | 1 |
| KD***60 | Bracket,Center | 1 |
| KD***50 | Stopper,Piston | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Starting Motor Mounting (2.8kw)
| 01***30 | Bolt | 2 |
| 07***95 | O-Ring,Transmission Strainer | 1 |
| 60***71 | Starting Motor Ass'Y,(2.8kw) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Stop Motor
| 01***16 | Bolt, Mounting Transmission Control Switch | 3 |
| 01***25 | Bolt - Relay Mounting | 3 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Water Pump
| 01***16 | Screw | 5 |
| 01***25 | Bolt - Relay Mounting | 2 |
| 01***20 | Screw | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Water Pump Pulley
| 04***47 | V-Belt,(With 25a Alternator) | 1 |
| 62***61 | Pulley?Non Hardening | 1 |
| 62***10 | Plate | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Water Pump Pulley (For Japan) (Noise Suppression Spec. For Ec.)
| 62***10 | V-Belt,Fan Drive | 1 |
| 62***70 | Pulley | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : 4d95s-1j S/N 124813-Up : Water Separator
| 01***25 | Bolt,(With Corrosion Resistor) | 2 |
| 07***60 | O-Ring,(For Pc750?800?1800) (A2610) | 1 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 6 |
Control System
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Brake Pedal (For Mono Lever Steering)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Brake Pedal (For Mono Lever Steering) (With Steel Cab)
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Brake Pedal (With Cab) (For Mono Lever Steering)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Brake Pedal Linkage (For Mono Lever Steering)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***45 | Bolt, Mounting Bracket To Radiator (Top) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Fuel Control Lever (For Mono Lever Steering)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***25 | Bolt | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Fuel Control Lever (For Mono Lever Steering)(With Steel Cab)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***25 | Bolt | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Inching Pedal (For F2-R2 Transmission)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Inching Pedal (For F2-R2 Transmission) (With Cab)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Inching Pedal (For F3-R3 Transmission)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 3 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Inching Pedal (For F3-R3 Transmission) (With Cab)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 3 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Inching Pedal Linkage (For F3-R3 Transmission)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***05 | Nut,L.H. (For Trimming Dozer) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Oil Cooler Piping
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : P.P.C. Valve (For Mono Lever Steering)(#75001-76440)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 4 |
| 07***20 | O-Ring,Relief Valve | 4 |
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : P.P.C. Valve (For Mono Lever Steering)(#76441-78603)
| 01***20 | Bolt,(Without Maintenance Monitor) | 4 |
| 07***20 | O-Ring,Relief Valve | 4 |
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Steering Brake Cylinder (For Mono Lever Steering)
| 07***15 | O-Ring,(Without Boom Kickout) | 1 |
| 07***18 | O-Ring,(See Fig.1601-29?1602-17) | 1 |
| 07***34 | O-Ring, O-Ring,Drain Plug? R.H. Half Tank | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Steering Piping (Brake Cylinder Line) (For Mono Lever Steering)
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 4 |
| 01***11 | Nut - Mounting | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Steering Piping (Steering Booster Line) (For Mono Lever Steering)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Steering Piping (Transmission Line) (For Mono Lever Steering)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Transmission Control Lever (3/3) (For Mono Lever Steering)
| 01***25 | Bolt,Without Revolution Sensor | 3 |
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Transmission Control Lever (3/3) (For Mono Lever Steering) (With Steel Cab)
| 01***25 | Bolt,Without Revolution Sensor | 3 |
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Transmission Control Lever (For F2-R2 Transmission) (1/3) (For Mono Lever Steering)
| 01***25 | Bolt,Without Revolution Sensor | 3 |
| 01***30 | Bolt,(For Mechanical Governor) | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Transmission Control Lever (For F2-R2 Transmission) (2/3) (For Mono Lever Steering)
| 01***30 | Bolt,(For Mechanical Governor) | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Transmission Control Lever (For F3-R3 Transmission) (1/3) (For Mono Lever Steering)
| 01***25 | Bolt,Without Revolution Sensor | 3 |
| 01***30 | Bolt,(For Mechanical Governor) | 10 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Control System : Transmission Control Lever (For F3-R3 Transmission) (2/3) (For Mono Lever Steering)
| 01***30 | Bolt,(For Mechanical Governor) | 8 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
Engine Related Parts And Electrical System
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Back-Up Alarm
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***05 | Capscrew | 2 |
| 01***20 | Screw | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Battery
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 08***10 | Terminal? (+) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Battery (Large Capacity Type)
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 08***10 | Terminal? (+) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Electrical System (With Key Stop Motor)
| 01***10 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 10 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Electrical System (Without Key Stop Motor)
| 01***10 | Bolt,(With Auto Emergency Steering) | 1 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 10 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Engine Mounting Parts
| 01***10 | Bolt (Op) | 4 |
| 10***20 | Cushion | 4 |
| 10***30 | Cushion | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Fuel Tank Additional Strainer And Piping
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 5 |
| 01***40 | Bolt,(With Service Valve R.H.) | 4 |
| 01***10 | Screw,(For Wiper Switch Earth) | 5 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping (With Rops Cab)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***40 | Bolt,(With Service Valve R.H.) | 4 |
| 01***10 | Screw,(For Wiper Switch Earth) | 5 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping (With Steel Cab)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***40 | Bolt,(With Service Valve R.H.) | 4 |
| 01***10 | Screw,(For Wiper Switch Earth) | 5 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Instrument Panel (For Mono Lever Steering)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***25 | Screw | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Instrument Panel (For Mono Lever Steering) (With Tachometer)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Instrument Panel (For Mono Lever Steering) (With Vandalism Protection)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***25 | Screw | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Radiator And Piping (With Sandy Dusty Protection Grid)(#75001-78085)
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Radiator And Piping (With Sandy Dusty Protection Grid)(#78086-78603)
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Radiator And Piping(#75001-78085)
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Radiator And Piping(#78086-78603)
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Radiator Reservoir Tank
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***23 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Engine Related Parts And Electrical System : Radiator Shutter
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***16 | Screw,(Sandy And Dusty Terrain S.) | 4 |
| 01***03 | Nut,(With Joy Stick Steering) | 4 |
Guard
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Additional Work Lamp (With Steel Cab)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***10 | Nut,(Fig.F2820-01a3-12) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Air Conditioner (Air Compressor Piping) (5/6)
| 01***12 | Bolt | 1 |
| 01***25 | Bolt,(For Automatic) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Air Conditioner (Air Conditioner Unit Mounting) (1/6)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 16 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Air Conditioner (Air Conpressor And Mounting) (4/6)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 7 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Air Conditioner (Air Duct And Control Panel) (3/6)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 10 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Air Conditioner (Condensor And Mounting) (2/6)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 7 |
| 01***20 | Bolt,(Without Maintenance Monitor) | 2 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 7 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Air Conditioner (Heater Piping) (6/6)
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
| 04***10 | Clip | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Air Conditioner Unit (Inner Parts)
| 11***10 | Air Conditioner Unit | 1 |
| TW***50 | Wiring Harness | 1 |
| TW***52 | Resistor | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Canopy
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 12 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 8 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Canopy (Canvas)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 8 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 16 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Car Heater (1/2)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 6 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Car Heater (2/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 3 |
| 08***14 | Clip,(For Large-Capacity Battery) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Car Heater Unit
| 11***50 | Car Heater Ass'Y,(See Fig.K0710-51a0) | 1 |
| ND***30 | Case Ass'Y | 1 |
| ND***80 | Wire Ass'Y | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Condensor
| 08***00 | Connector (Modify Air Dryer Lead) | 1 |
| 08***01 | Connector - At Radio Power Source And Speaker | 1 |
| 11***30 | Condenser | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Cross Bar (For Angle Dozer)
| 01***40 | Bolt,R.H. Outside And L.H. Inside, Bolt | 8 |
| 01***40 | Bolt,(With Center Guard) | 8 |
| 01***45 | Bolt,(For Travel Motor) (Not Show) | 16 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Cross Bar (For Power Angle Power Tilt)
| 01***40 | Bolt,R.H. Outside And L.H. Inside, Bolt | 8 |
| 01***40 | Bolt,(With Center Guard) | 8 |
| 01***45 | Bolt,(For Travel Motor) (Not Show) | 16 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Head Guad
| 01***40 | Bolt,R.H. Outside And L.H. Inside, Bolt | 18 |
| 01***75 | Bolt | 24 |
| 01***42 | Washer,Spring (For Pedal Steering), Washer-Spring | 18 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Loader Frame And Floor Plate (For Mono Lever Steering)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 10 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Loader Frame And Floor Plate (With Rops Cab)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Loader Frame And Floor Plate (With Steel Cab)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 13 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 16 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 7 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Operator'S Seat (With Oil Damper)(#75001-78085)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 16 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Operator'S Seat (With Oil Damper)(#78086-78603)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 13 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Operator'S Seat (With Steel Cab)
| 01***16 | Bolt (With Air Heater & Conditioner) | 3 |
| 01***25 | Bolt,Without Revolution Sensor | 8 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Operator'S Seat(#75001-76515)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 10 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***40 | Bolt,R.H. Outside And L.H. Inside, Bolt | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Operator'S Seat(#76516-78603)
| 01***25 | Bolt,Without Revolution Sensor | 8 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Radiator Guard And Hood (For Angle Dozer)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 9 |
| 01***50 | Bolt,(For Strengthened Cover) | 16 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Radiator Guard And Hood (For Power Angle Power Tilt)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 9 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 8 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Rear Cover And Hydraulic Tank
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Rear Cover And Hydraulic Tank (With Rops Cab)
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Rear Cover And Hydraulic Tank (With Steel Cab)
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Room Mirror (With Steel Cab)
| 01***20 | Bolt,(Forwarded Individually Parts) | 2 |
| 14***31 | Bracket | 1 |
| 14***40 | Mirror | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Rops Bracket
| 01***40 | Bolt,R.H. Outside And L.H. Inside, Bolt | 26 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Upper) | 8 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 34 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Rops Cab (Body) (1/5)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***16 | Screw,(Sandy And Dusty Terrain S.) | 6 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Rops Cab (Door And Side Window) (3/5)
| 01***20 | Bolt,(Without Maintenance Monitor) | 4 |
| 01***45 | Bolt | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 10 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Rops Cab (Electrical System) (4/5)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 8 |
| 01***12 | Screw,(Additional Sun Visor) | 1 |
| 01***20 | Screw - Turn Signal And Parkinglight Mounting | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Rops Cab (Front And Rear Window) (2/5)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 4 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Rops Cab (Mounting Parts) (5/5)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 9 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 5 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 9 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Rops Canopy
| 01***80 | Washer,(For R.H. Steering) | 4 |
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Name,(Limited Supply) (Japanese) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Steel Cab (Body) (1/6)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***20 | Screw | 2 |
| 01***16 | Screw,(With Payload Meter) | 5 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Steel Cab (Door Lock) (3/6)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***25 | Bolt,Without Revolution Sensor | 8 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Steel Cab (Door) (2/6)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***30 | Bolt | 8 |
| 01***12 | Screw | 8 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Steel Cab (Electrical System) (6/6)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***20 | Screw | 2 |
| 01***14 | Screw | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Steel Cab (Window) (4/6)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 4 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 8 |
| 01***12 | Screw,(With Articulate Indicator) | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Steel Cab (Wiper Motor) (5/6)
| 01***16 | Screw, Mount Parking Lights | 2 |
| 01***16 | Bolt - Starting Motor Ground Cable | 4 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 6 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Steel Cab Mount Bracket
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 6 |
| 01***40 | Bolt,R.H. Outside And L.H. Inside, Bolt | 8 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Upper) | 16 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Sunvisor (With Steel Cab)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 4 |
| 01***23 | Washer,(With Auto Emergency Steering) | 4 |
| 19***51 | Sun Visor | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Under Guard
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***30 | Bolt-Hex, Bolt,(With Center Guard) | 12 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 3 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Under Guard (Reinforced Type) (Available For Mounting Hook)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***30 | Bolt-Hex, Bolt,(With Center Guard) | 12 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 3 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Under Guard (With Front Hook)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***30 | Bolt-Hex, Bolt,(With Center Guard) | 12 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Upper) | 6 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Guard : Water Valve (For Car Heater)
| 07***59 | Clamp,See Fig. K4010-05a0 | 4 |
| 09***00 | Valve | 1 |
| 10***20 | Hose | 2 |
Main Clutch? Damper? Transmission? Steering And Final Drive
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Bevel Gear And Shaft
| 01***30 | Bolt,(For Center Guard) | 9 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 6 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 6 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Brake
| 01***45 | Bolt, Mount Center Hinge Retainer (Upper) | 8 |
| 01***23 | Plain Washer | 2 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 8 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Damper
| 01***16 | Bolt (With Air Heater & Conditioner) | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 10 |
| 01***75 | Bolt,(For Adjusting) | 3 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Final Drive Case(#75001-77124)
| 01***30 | Bolt,(With Body Positioner) | 16 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 4 |
| 01***70 | Bolt - Accumulator Mounting Bracket | 22 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Final Drive Case(#77125-78603)
| 01***30 | Bolt,(With Body Positioner) | 16 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 8 |
| 01***70 | Bolt - Accumulator Mounting Bracket | 30 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Final Drive Gear
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 16 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 16 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Sprocket And Shaft
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***11 | Nut - Mounting | 24 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 8 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Steering Case And Main Frame (For Angle Dozer) (For Mono Lever Steering)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 11 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 11 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Steering Case And Main Frame (For Power Angle Power Tilt) (For Mono Lever Steering)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 11 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 11 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Steering Case Cover (For Mono Lever Steering)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Steering Clutch (For F3-R3 Transmission)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 16 |
| 01***10 | Nut (K10) | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 16 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Steering Clutch(#75001-76515)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 16 |
| 01***10 | Nut (K10) | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 16 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Steering Clutch(#76516-78603)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 16 |
| 01***10 | Nut (K10) | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 16 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission (F2-R2) (1st Housing) (4/6) (For Mono Lever Steering)
| 04***12 | Pin, Spring | 3 |
| 04***15 | Ring, Snap | 1 |
| 04***15 | Ring,Back-Up | 3 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission (F2-R2) (Case) (1/6) (For Mono Lever Steering)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***35 | Bolt,(For Position Fixing) | 3 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 14 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission (F2-R2) (Forward And 2nd Housing) (3/6) (For Mono Lever Steering)
| 04***12 | Pin, Spring | 3 |
| 07***08 | Plug,(Without Lock-Up), Plug | 1 |
| 10***40 | Housing Ass'Y,Forward And 2nd | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission (F2-R2) (Pump) (6/6) (For Mono Lever Steering)
| 01***45 | Screw | 3 |
| 01***55 | Bolt,(10m) | 7 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission (F2-R2) (Reverse Housing) (2/6) (For Mono Lever Steering)
| 01***50 | Bolt,(With Service Valve R.H.) | 1 |
| 04***12 | Pin, Spring | 3 |
| 04***18 | Ring,Snap (With Emergency Steering) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission (F2-R2) (Transfer) (5/6) (For Mono Lever Steering)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***75 | Bolt, Tube Mounting | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission (F3-R3) (1st Housing) (5/7)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***45 | Screw | 10 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission (F3-R3) (2nd Housing) (4/7)
| 01***08 | Screw | 1 |
| 04***15 | Ring,Back-Up | 1 |
| 04***20 | Ring, Snap | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission (F3-R3) (Case) (1/7)
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***35 | Bolt,(For Position Fixing) | 1 |
| 01***45 | Screw | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission (F3-R3) (Forward And 3rd Housing) (3/7)
| 04***24 | Pin,Dowel (For No.3 Housing) | 2 |
| 10***20 | Gear | 1 |
| 10***20 | Gear | 6 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission (F3-R3) (Pump) (7/7)
| 01***45 | Screw | 3 |
| 01***55 | Bolt,(10m) | 7 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission (F3-R3) (Reverse Housing) (2/7)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***12 | Washer,(F2320-63a2 -13 ) | 1 |
| 04***00 | Key | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission (F3-R3) (Transfer) (6/7)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***75 | Bolt, Tube Mounting | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission Valve (F2-R2) (Modulation) (For Mono Lever Steering)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***60 | Bolt,(For Japan And Sweden) | 2 |
| 01***70 | Bolt (Op) | 6 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission Valve (F2-R2) (Selector And Inching) (For Mono Lever Steering)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***50 | Bolt (Kit) | 8 |
| 01***75 | Bolt,(For Shipping) | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission Valve (F3-R3) (Modulation)
| 01***20 | Bolt,(With Auto Emergency Steering) | 5 |
| 01***60 | Bolt,(For Japan And Sweden) | 3 |
| 01***70 | Bolt (Op) | 5 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Transmission Valve (F3-R3) (Selector And Inching)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***50 | Bolt (Kit) | 8 |
| 01***75 | Bolt,(For Shipping) | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Main Clutch? Damper? Transmission? Steering And Final Drive : Universal Joint
| 01***40 | Bolt,(With Air Conditioner) | 8 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 8 |
| 07***75 | Fitting,Grease (Without Lub. Piping) | 1 |
Mark Plate? Tool And Kit
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Accessory Parts
| 09***13 | Bag,Tool (D31s) | 1 |
| 09***50 | Overall,(Special Order) | 1 |
| 09***57 | Cap,(Special Order) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Center Of Gravity Mark
| 09***01 | Plate? Mark,Keep A Safe Distance | 4 |
| 09***12 | Plate? Mark,Location Of Center Of Gravity | 2 |
| 11***10 | Table,Slinging Position | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Marks And Plates (English)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Inspection And Maintenance | 1 |
| 09***35 | Plate? Name,(Limited Supply) (English) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Marks And Plates (German)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Inspection And Maintenance | 1 |
| 09***35 | Plate? Name,(Limited Supply) (German) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Marks And Plates (Polish)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***01 | Plate? Safety,Inspection And Maintenance | 1 |
| 09***35 | Plate? Name,(Limited Supply) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Marks And Plates (Spanish)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Inspection And Maintenance | 1 |
| 09***35 | Plate? Name,(Limited Supply) (Spanish) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Oversize Parts (For Track Link) (Lubricate Type) (Supply Only)
| 10***70 | Pin | 0 |
| 10***80 | Pin | 0 |
| 10***10 | Bushing | 0 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Oversize Parts (For Track Link) (Supply Only)
| 10***13 | Bushing,Regular | 0 |
| 10***33 | Bushing,Regular | 0 |
| 10***42 | Bushing,Master | 0 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Service Kit (For F2-R2 Transmission)
| 07***08 | O-Ring,(F2320-53a3 -38 ) | 5 |
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
| 07***80 | O-Ring,Hydraulic Oil Filter | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Service Kit (For F3-R3 Transmission)
| 01***12 | Washer,(F2320-63a2 -13 ) | 1 |
| 07***08 | O-Ring,(F2320-53a3 -38 ) | 5 |
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Shoe Bolt And Nut Service Kit (Supply Only)
| 20***01 | Shoe Bolt And Nut K | 1 |
| 20***11 | Bolt? Shoe (Y0320-K1) | 50 |
| 20***20 | Nut? Shoe (Y0320-K2) | 50 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Spare Parts
| 04***47 | V-Belt,(With 25a Alternator) | 1 |
| 07***95 | O-Ring,Transmission Strainer | 1 |
| 07***28 | O-Ring,(For Hd325-6?Hm400-1) (A2110) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Tool
| 07***50 | Pump, (Bellows Type) | 1 |
| 07***03 | Cartridge - Grease | 1 |
| 07***45 | Nozzle, Grease Pump (Non-Flexible Type) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Track Link (Lubricate Type) (Supply Only)
| 07***22 | Plug,Large | 74 |
| 07***21 | Plug,(Small) | 74 |
| 10***21 | Link,Track? L.H | 72 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Track Link (Supply Only)
| 10***21 | Link,Track? L.H | 74 |
| 10***31 | Link,Track? R.H | 74 |
| 10***44 | Bushing,Regular | 72 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Mark Plate? Tool And Kit : Vandalism Protection
| 07***00 | Cap,(For Vandalism) | 1 |
| 09***00 | Lock,(With Vandalism Protection) | 1 |
Track
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Carrier Roller
| 01***25 | Bolt,(For Slag Handling) | 1 |
| 01***25 | Bolt,Without Revolution Sensor | 3 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 8 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Front Idler
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***30 | Bolt,(With Body Positioner) | 8 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Recoil Spring
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 8 |
| 01***30 | Bolt,(For Rubber Shoe) | 12 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Recoil Spring (Reinforced Type)
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 8 |
| 01***30 | Bolt,(For Rubber Shoe) | 12 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Track Frame (For Angle Dozer)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***25 | Bolt,(For Rubber Shoe) | 24 |
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 16 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Track Frame (For Power Angle Power Tilt)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***25 | Bolt,(For Rubber Shoe) | 24 |
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 16 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Track Frame (With Mono Block Type Track Roller Guard)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***25 | Bolt,(For Rubber Shoe) | 36 |
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 16 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Track Roller(#75001-77967)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Upper) | 40 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 12 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Track Roller(#77968-78603)
| 01***50 | Bolt,(Shim Thickness?Less Than 8mm) | 40 |
| 01***42 | Washer,Spring (For Pedal Steering), Washer-Spring | 40 |
| 07***38 | Ring, Seal - Between Sections | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Track Shoe (Lubricate Type) (Single Grouser With Hole) (300mm Wide)
| 07***22 | Plug,Large | 74 |
| 07***21 | Plug,(Small) | 74 |
| 10***22 | Track Shoe Ass'Y | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Track Shoe (Lubricate Type) (Single Grouser) (300mm Wide)
| 07***22 | Plug,Large | 74 |
| 07***21 | Plug,(Small) | 74 |
| 10***01 | Track Shoe Ass'Y | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Track Shoe (Lubricate Type) (Single Grouser) (340mm Wide)
| 07***22 | Plug,Large | 74 |
| 07***21 | Plug,(Small) | 74 |
| 10***11 | Track Shoe Ass'Y | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Track Shoe (Lubricate Type) (Triple Grouser With Hole)
| 07***22 | Plug,Large | 74 |
| 07***21 | Plug,(Small) | 74 |
| 10***21 | Link,Track? L.H | 72 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Track Shoe (Master Pin Type) (Flat Type) (300mm Wide)
| 10***21 | Link,Track? L.H | 74 |
| 10***31 | Link,Track? R.H | 74 |
| 10***44 | Bushing,Regular | 72 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Track Shoe (Master Pin Type) (Single Grouser With Hole) (300mm Wide)
| 10***09 | Track Shoe Ass'Y | 1 |
| 10***21 | Link,Track? L.H | 74 |
| 10***31 | Link,Track? R.H | 74 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Track Shoe (Master Pin Type) (Single Grouser) (300mm Wide)
| 10***09 | Track Shoe Ass'Y | 1 |
| 10***21 | Link,Track? L.H | 74 |
| 10***31 | Link,Track? R.H | 74 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Track Shoe (Master Pin Type) (Single Grouser) (340mm Wide)
| 10***09 | Track Shoe Ass'Y | 1 |
| 10***21 | Link,Track? L.H | 74 |
| 10***31 | Link,Track? R.H | 74 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Track : Track Shoe (Master Pin Type) (Triple Grouser With Hole) (300mm Wide)
| 10***21 | Link,Track? L.H | 74 |
| 10***31 | Link,Track? R.H | 74 |
| 10***44 | Bushing,Regular | 72 |
Work Equipment
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : 3-Point Hitch (1/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Upper) | 4 |
| 01***40 | Bolt (Op) | 8 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : 3-Point Hitch (2/2)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***25 | Bolt,Without Revolution Sensor | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : 3-Point Hitch Cylinder
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***19 | Nut | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : Angle Blade
| 01***45 | Washer | 4 |
| 02***40 | Bolt,(Pl) | 20 |
| 02***13 | Nut,(Pl) | 20 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : Angle Cylinder (For Power Angle Power Tilt)
| 01***19 | Nut | 1 |
| 04***20 | Ring, Snap | 4 |
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : C-Frame
| 01***55 | Bolt,(10m) | 2 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Upper) | 12 |
| 01***15 | Bolt (Kit) | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : Dozer Lock (For Power Angle Power Tilt)
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 8 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 8 |
| 10***10 | Rope,Wire | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : Hitch
| 01***40 | Bolt (Op) | 2 |
| 01***45 | Washer,(Without R.O.P.S.) | 2 |
| 10***12 | Drawbar | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : Hydraulic Piping (Angle Cylinder Line) (Dozer Side) (For Pat) (For Single Lever)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 3 |
| 07***12 | O-Ring (Itl) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : Hydraulic Piping (Tilt Cylinder Line) (Dozer Side) (For Pat) (For Single Lever)
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : Hydraulic Piping Cover (For Power Angle Power Tilt)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 9 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : Power Angle Power Tilt Blade
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 8 |
| 02***40 | Bolt,(Pl) | 18 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : Power Angle Power Tilt Frame
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 10 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***60 | Bolt, Mount Pole | 6 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : Swing Drawbar
| 01***45 | Bolt (Op) | 10 |
| 01***45 | Washer,(Without R.O.P.S.) | 10 |
| 04***12 | Pin,Cotter (For Ripper) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : Swing Drawbar (For 3-Point Hitch)
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 8 |
| 01***40 | Bolt,R.H. Outside And L.H. Inside, Bolt | 4 |
| 01***42 | Washer,Spring (For Pedal Steering), Washer-Spring | 12 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment : Tilt Cylinder (For Power Angle Power Tilt)
| 01***18 | Bolt | 1 |
| 01***22 | Nut,(North America Spec.) | 1 |
| 01***32 | Washer, (Without Emergency Steering) | 1 |
Work Equipment Control System
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Hydraulic Piping (Angle Cylinder Line) (Chassis Side) (For Single Lever)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 10***50 | Tube | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Hydraulic Piping (Lift Cylinder Line) (For Angle Dozer)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Hydraulic Piping (Lift Cylinder Line) (For Power Angle And Power Tilt)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Hydraulic Piping (Tank To Pump To Valve)
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Hydraulic Piping (Tank To Pump To Valve) (For 25a Alternator)
| 01***45 | Screw | 4 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Hydraulic Piping (Tilt Cylinder Line) (Chassis Side) (For Single Lever)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 5 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Hydraulic Piping (Valve To Cylinder) (For 3-Point Hitch)
| 01***18 | Bolt | 1 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Hydraulic Tank And Filter (For 3-Point Hitch)
| 01***25 | Bolt,Without Revolution Sensor | 7 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 7 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Hydraulic Tank And Filter (For Pat) (For Single Lever) (With Steel Cab)
| 01***25 | Bolt,Without Revolution Sensor | 7 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 7 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Hydraulic Tank And Filter (For Single Lever)
| 01***25 | Bolt,Without Revolution Sensor | 7 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 7 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Lift Cylinder (For Angle Dozer)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***25 | Bolt | 1 |
| 01***19 | Nut | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Lift Cylinder (For Power Angle Power Tilt)
| 01***40 | Bolt, Mount Master Brake Cylinder | 1 |
| 01***19 | Nut | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Work Equipment Control Lever (1/2) (For Power Angle Power Tilt) (For 3-Point Hitch)
| 01***16 | Bolt (With Air Heater & Conditioner) | 6 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Work Equipment Control Lever (1/2) (With Steel Cab)(For Pat) (For Single Lever)
| 01***16 | Bolt (With Air Heater & Conditioner) | 6 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Work Equipment Control Lever (1/2)(With Steel Cab) (For Angle Dozer)
| 01***16 | Bolt (With Air Heater & Conditioner) | 6 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Work Equipment Control Lever (2/2) (For Power Angle Power Tilt) (For 3-Point Hitch)
| 01***05 | Nut,L.H. (For Trimming Dozer) | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
| 04***24 | Pin, Spring | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Work Equipment Control Lever (2/2) (With Steel Cab) (For Single Lever)
| 01***16 | Bolt (With Air Heater & Conditioner) | 6 |
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 10 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Work Equipment Control Lever (For Angle Dozer)
| 01***16 | Bolt (With Air Heater & Conditioner) | 6 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Work Equipment Control Lever (For Pat) (For Single Lever)
| 01***16 | Bolt (With Air Heater & Conditioner) | 6 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Work Equipment Pump
| 01***75 | Bolt | 4 |
| 01***32 | Washer, (Without Emergency Steering) | 4 |
| 04***20 | Pin,Dowel (Welded) | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Work Equipment Valve (1/2) (For 3-Point Hitch)
| 01***16 | Bolt (Op) | 4 |
| 01***25 | Bolt, Seal Cover Mounting | 4 |
| 01***30 | Bolt | 4 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Work Equipment Valve (1/2) (For Single Lever)
| 01***16 | Bolt (Op) | 4 |
| 01***25 | Bolt, Seal Cover Mounting | 2 |
| 01***30 | Bolt | 2 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Work Equipment Valve (2/2) (For 3-Point Hitch)
| 07***15 | O-Ring,(Without Boom Kickout) | 1 |
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 2 |
| 07***34 | O-Ring, O-Ring,Drain Plug? R.H. Half Tank | 3 |
Komatsu : D21a-7(S/N 75001-78603-Up) : Work Equipment Control System : Work Equipment Valve (2/2) (For Single Lever)
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 1 |
| 07***34 | O-Ring, O-Ring,Drain Plug? R.H. Half Tank | 2 |
| 70***00 | Valve Ass'Y,Suction | 1 |
D21A-7(S/N 75001-78603-UP) serial number reference
The machine serial number plate is located on the inside of the left-hand armrest. To identify the correct model variant, read the full model designation (e.g., D2TR-7, D2AG-7) and cross-reference the serial number against the specific range for that variant. The 'A' suffix denotes standard, 'AG' denotes automated grade control, and 'PG' denotes low ground pressure/wide track configurations.
| Prefix | Identifies | Notes |
|---|---|---|
| D21A-7 | Standard (A) | Serial range 75001-78603. Hydrostatic transmission (HS) with 2 forward and 2 reverse gears. Engine is Komatsu 4D95S. Standard blade width is 7.2 ft (2170 mm) and height is 23.3 in (590 mm). Operating weight is approximately 7936.7 lb (3600 kg). |
| D21A-7T | Trimming Dozer | Trimming Dozer configuration. Serial range 75001-UP. Distinct from the standard D21A-7; verify specific serial overlap with dealer as ranges may vary by region. |
| D21AG-7 | Automated Grade Control | Automated grade-control variant. Serial range 75001-UP. Shares the same base platform and serial start point as the standard D21A-7. |
| D21PG-7A | LGP (Low Ground Pressure) | Wide-track/LGP configuration. Serial range 75001-UP. Shares the same base platform and serial start point as the standard D21A-7. |
Frequently asked questions
What engine is installed in the D21A-7 (S/N 75001-78603-UP)?
This specific serial range utilizes the Komatsu 4D95S engine, a 4-cylinder diesel unit with a displacement of approximately 2.7 L (164.2 cu in).
What is the operating weight of this bulldozer?
The machine has an operating weight of 3600 kg (7936.7 lb).
What model replaced the D21A-7?
The D21A-7 was part of a lineage that transitioned into later dash-number generations, such as the D21A-8, which featured updated emissions and telematics capabilities.
What D21A-7(S/N 75001-78603-UP) owners discuss
What are the common steering and transmission failure modes for the D21A-7?
Operators report frequent steering failures where one track fails to turn, particularly after the machine reaches operating temperature. This is often linked to worn steering clutch discs, hydraulic leaks, or issues with the steering valve block and seals. Transmission trouble may also involve worn clutch material.
What engine model is installed in the D21A-7 (S/N 75001-78603-UP) and what are its primary specs?
The machine uses a Komatsu 4D95S engine. It features 4 cylinders with a displacement of 164.2 cu in (2.7 L). The gross power is 40 hp (29.9 kW) measured at 2450 rpm.
What undercarriage wear patterns should be monitored on this machine?
Users have documented unexpected high wear on sprockets and bushings, even on units with low operating hours. The standard configuration includes 5 track rollers per side and a track pitch of approximately 5.32 in (135 mm).
What electrical or sensor-related issues can cause engine performance drops?
Fault codes may indicate abnormalities in the engine controller, sensors, or valves. Specifically, failures in the engine management system or sensor malfunctions (such as temperature, fuel pressure, or oil pressure) can lead to decreased output, stalling, or overheating.
What should be checked when purchasing a used D21A-7 (S/N 75001-78603-UP)?
Verify the chassis-engraved serial number against the riveted plate on the front frame casting; a mismatch is a primary signal of stolen equipment. Additionally, check for hydraulic air in the system which can cause stalling or steering issues, and inspect the clutch/brake assembly for proper engagement. For machines built since 2008, compare dashboard hours against telematics reports to detect potential hour-meter rollback.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Serial-range & configuration variants
This page covers the Komatsu D21A-7(S/N 75001-78603-UP). Related factory variants of the same model family:
D21A-7(S/N 78604-UP (4D94E-1 (Emission) Eng. Installed))D21A-7(S/N 75001-78603-UP (For C.I.S. / Trimming Dozer))
Need a specific D21A-7(S/N 75001-78603-UP) part?
Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.