Komatsubulldozermedium (d40 - d75)
Komatsu D53A-16(S/N 65001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu D53A-16 (S/N 65001-UP) is a mid-size crawler dozer in Komatsu's 12 to 13 tonne class, built around the 4D130-1E turbocharged 4-cylinder diesel: 8.50 L displacement, 82 kW (110 HP) at 1900 rpm, fully mechanical with no ECM or electronic controls. Operating weight runs about 12,170 kg (26,830 lb) with the angling dozer blade, roughly 3.75 m (12.3 ft) wide with about 2.83 m3 (3.7 yd3) capacity, moved by a 3-speed forward/3-speed reverse powershift transmission topping out around 9.8/11.7 km/h. It belongs to a 1980s-vintage generation carrying the 65001-UP serial block, sharing its factory shop manual with the straight-blade D53P-16 and the lighter D50A-16, D50P-16, and D50PL-16 siblings on the same chassis family. Komatsu later moved production to the D53A-17 (S/N 80001-UP) generation, a separately manualed update, and eventually to the D53A-18.
Komatsu's D50/D53-16 generation gave way to the -17 series at the 80001 serial block. The exact engineering changes between the two generations aren't well documented, but the separate serial range and separate shop manual point to factory-level revisions rather than a running production change. What stayed constant across the family was the mechanical, no-electronics approach: clutch-and-brake steering, a mechanically injected engine, and a torque-converter powershift transmission a field mechanic can service without a laptop. That simplicity is why the D53A-16 still has a following in the used and parts market today. It's an affordable, easy-to-diagnose dozer for buyers who want a working machine without control-module failures, and its engine, undercarriage, and steering-clutch components stay in demand as rebuilders and small contractors keep these units running well past their original service life.
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 D53A-16(S/N 65001-UP) specifications
Overview
| Model | Komatsu D53A-16, S/N 65001-UP |
| Machine type | Crawler dozer (angle-blade tractor), small-class |
| Configuration note | D53A denotes the angle-blade version in this lineup; the straight/PAT-blade D53P and straight-blade D53S variants on the same 65001-UP serial range are separate models with their own spec sheets. No Std/XL/LGP sub-configurations are published for the D53A-16 — one base configuration only. |
Engine
| Engine model | Komatsu 4D130-1E (tied to this 65001-UP serial range) |
| Type | 4-cylinder, water-cooled, turbocharged diesel |
| Displacement | 8.50 L (518.4 cu in) |
| Bore | 130 mm |
| Gross power | 82 kW (110 HP) @ 1900 rpm |
| Emissions tier | Pre-emissions-regulation era mechanical diesel (no aftertreatment); not applicable |
Weights
| Operating weight | 12,170 kg (26,830 lb) |
| Configuration variance | Single published configuration for this serial range — no separate Std/XL/LGP operating-weight breakout found |
Dimensions
| Overall length, with blade | 4.57 m (15.0 ft) |
| Overall length, without blade | 3.63 m (11.9 ft) |
| Overall width over tracks | 2.35 m (7.7 ft) |
| Overall height, top of cab | 2.87 m (9.4 ft) |
| Ground clearance | 0.34 m (1.1 ft) |
| Track length on ground | 2.23 m (7.3 ft) |
| Track gauge | 1.89 m (6.2 ft) |
| Track shoe width (standard) | 46.2 cm (18.2 in) |
| Track pitch | 17.5 cm (6.9 in) |
| Track rollers per side | 5 |
| Carrier rollers per side | 2 |
Performance
| Transmission | Power-shift torque-flow transmission (TF type), 3 forward / 3 reverse gears |
| Travel speed, forward (max, 3rd gear) | 9.8 km/h (6.1 mph) |
| Travel speed, reverse (max, 3rd gear) | 11.7 km/h (7.3 mph) |
| Ground pressure | 0.51 kg/cm² (7.3 psi), standard shoe |
| Drawbar pull | Not documented in available spec sheets for this exact serial range — verify with dealer or shop manual |
| Gradeability | Not documented in available spec sheets for this exact serial range — verify with dealer or shop manual |
Blade
| Blade type | Angle dozer blade (A-blade) |
| Blade width | 3.75 m (12.3 ft) |
| Blade height | 87.6 cm (34.5 in) |
| Blade capacity | 2.83 m³ (3.7 cu yd) |
| Max cutting depth | Approx. 59 cm (23.3 in), single-source figure — treat as approximate |
Service capacities
| Fuel tank | 240.3 L (63.5 gal) |
| Cooling system | 55.3 L (14.6 gal) |
| Engine oil | Not documented in available spec sheets for this serial range — verify with dealer or shop manual |
| Hydraulic/steering system | Not documented in available spec sheets for this serial range — verify with dealer or shop manual |
| Final drive / transmission oil | Not documented in available spec sheets for this serial range — verify with dealer or shop manual |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
D53A-16(S/N 65001-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (w/ filter) | Not documented for this exact serial range in available sourcing — check the OMM lubricant chart or verify with your dealer. | Komatsu genuine diesel engine oil (EO); grade selected by ambient temperature per the OMM viscosity chart (typically SAE 10W in cold climates up to SAE 30/40 or 15W-40 in warm climates). |
| Cooling system | approx. 55.3 L (14.6 US gal) | Komatsu genuine antifreeze/coolant (AF-NAC or equivalent Super Coolant), mixed with water per climate; do not exceed the manufacturer's max concentration. |
| Fuel tank | approx. 240.4 L (63.5 US gal) | Diesel fuel graded to ambient temperature (No. 2-D for normal conditions; No. 1-D or a winter blend in cold climates). |
| Powershift transmission (TF-type, 3F/3R) | Not documented for this exact serial range in available sourcing — verify with the OMM lubricant chart or your dealer. | Komatsu genuine powertrain oil (TO); grade per OMM climate chart. |
| Bevel gear / steering clutch compartment | Not documented for this exact serial range in available sourcing — verify with the OMM lubricant chart or your dealer. | Komatsu genuine powertrain oil (TO), same family as transmission unless the OMM specifies a separate fill point. |
| Final drive, each side | Not documented for this exact serial range in available sourcing — verify with the OMM lubricant chart or your dealer. | Komatsu genuine final drive/axle oil (AXO or TO per OMM designation). |
| Hydraulic system / tank (blade control) | Not documented for this exact serial range in available sourcing — verify with the OMM lubricant chart or your dealer. | Komatsu genuine hydraulic oil (HO); grade per OMM climate chart. |
| Pivot shaft / equalizer bar | Grease-lubricated point, not a fluid reservoir; no fill capacity specified. | Komatsu genuine multipurpose grease per the OMM lubrication schedule. |
| Grease points, general | Per-point capacity not specified; grease to purge at each fitting per the OMM interval chart. | Komatsu genuine multipurpose EP grease (NLGI Grade 2); molybdenum-disulfide grease where the OMM calls it out for specific pins/bushings. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu D53A-16(S/N 65001-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 D53A-16(S/N 65001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
The 4D130-1E runs full mechanical injection with no ECM or telematics, so oil analysis is the main predictive tool available. Sample engine, torque converter, and final drive oil at scheduled changes to catch metal wear early. Watch the analog panel: lamps for coolant temperature, oil pressure, air cleaner restriction, and water-in-fuel warn before a failure develops. Exhaust smoke color and steering-clutch drag are worth logging between services as early wear indicators.
Corrective & Common Repairs
Steering clutch and brake band wear is the most common complaint on this generation; pulling to one side or sluggish turns usually means the band needs adjustment or relining. Cold mechanical injection can be hard-starting in low temperatures, so check pump timing and injector condition before blaming the battery. Oil-overfill on the 4D130-1E drives white or blue smoke; verify dipstick level. Final-drive output seals are a frequent slow-leak repair.
Overhaul & Rebuild Points
Major overhaul work centers on the steering clutch discs and brake bands, the final drive gear sets and bearings, and the turbocharger rotor assembly on the 4D130-1E. Torque converter and damper components deserve inspection at big-hour milestones. Undercarriage overhaul work, track rollers, idlers, sprockets, and track adjuster seals, tends to track the same wear cycle as the steering system on machines run in abrasive or rocky ground.
Seasonal & Environment Servicing
In cold climates, use correct-viscosity oil and drain the fuel-water separator daily; mechanical injection on the 4D130-1E is sensitive to fuel gelling and slow cranking. In hot or dusty sites, clean the radiator core and air cleaner more often, and re-grease the track adjuster and equalizer bar after heavy mud or sand work. Swamp-configured units need extra attention to final-drive seals and track tension in wet ground.
D53A-16(S/N 65001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 07281-00197 | Clamp,(With Pre-Fuel Filter) | Fuel system service | Check fitment → |
| 07000-05155 | O-Ring,Hydraulic Oil Filter | Hydraulic service | Check fitment → |
| 07000-02075 | O-Ring,Steering Oil Filter | Lubrication service | Check fitment → |
| (134-49-00100) | Oil Filter Ass'Y,(See Fig.F2730-03a0) | Lubrication service | Check fitment → |
| 600-181-2460 | Element,Inner | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
D53A-16(S/N 65001-UP) attachments & work tools
Blades
D53A-16 carries the angling dozer blade: about 3.75 m (12.3 ft) wide, roughly 2.8 m3 (3.7 yd3) capacity, cut depth around 590 mm (23 in). The sibling D53P-16 runs a narrower, deeper straight/semi-U blade near 3.5 m (11.6 ft) wide but higher capacity around 3.2 m3 (4.2 yd3) on a heavier machine — do not carry that blade spec onto the D53A-16. No VPAT (variable-angle-tilt) option applies to this range; VPAT belongs to later Komatsu dozer generations, well after this 1980s-era 4D130-powered platform.
Rippers
This is a 110 hp, roughly 12.2 t class dozer, the size bracket where Komatsu factory rear ripper offerings of this era are single-shank, not multi-shank — multi-shank rippers show up on the larger D65-and-up frames. A confirmed single-shank ripper weight for this exact serial range is not documented in available sources; verify tip/shank weight with your dealer or the shop manual before ordering.
Winches
Rear-mounted cable winches (PTO or hydraulically driven) were a common factory or dealer-installed option across the D50/D53/D57/D58 dozer family for logging and pipeline work, fitted at the same rear mounting used for the ripper. Exact drum capacity and model for the D53A-16(65001-UP) specifically is not confirmed in available documentation — treat winch fitment as class-typical and verify against the parts book for this serial range.
Drawbars/counterweights
A rear drawbar bolts to the same rear frame mounting used by the ripper or winch, for towing scrapers, rollers, or sleds. Rear counterweight ballast is typical on this class when running a straight blade or a rear winch to balance the machine, but a specific counterweight figure for the D53A-16(65001-UP) is not documented in available sources.
Cab/ROPS guarding for forestry/waste
Base machine carries a ROPS/FOPS-rated operator structure; forestry- or waste-duty packages of this era typically add screened brush guards over the engine hood and radiator, window/glass screening, and a belly guard, mirroring Komatsu's standard small-to-mid dozer forestry kit. No serial-specific guarding option list for the D53A-16(65001-UP) turned up in available sources — confirm exact kit contents with a dealer.
Hydraulic arrangement (front/rear)
The blade lift/angle circuit runs off the machine's main hydraulic pump through a dedicated control valve at the front; PAT-blade siblings add a tilt/angle function to that same pump circuit. A rear ripper, when fitted, is usually plumbed off the same hydraulic system via its own control valve, while PTO-type winches draw power mechanically off the transmission rather than the hydraulic circuit — configuration varies by which rear tool is fitted.
All D53A-16(S/N 65001-UP) assemblies by section
Every catalogued assembly group for the Komatsu D53A-16(S/N 65001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
4d130-1e S/N 10544-Up
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Air Cleaner (Sandy And Dusty Spec.)
| 01***32 | Nut,Wing | 1 |
| 01***70 | Nut,Wing | 1 |
| 01***16 | Washer,Radio Controlled Slag Handling | 4 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Air Intake Manifold And Air Cleaner
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***00 | Bolt (M10-1.50x100) | 4 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Air Intake Manifold And Connection (Sandy And Dusty Spec.)
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
| 01***00 | Bolt (M10-1.50x100) | 4 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Alternator (13a)
| 60***50 | Alternator A. (13a),(With Non Hardening Pulley) | 1 |
| KD***31 | Bushing,Insulator | 2 |
| KD***80 | Packing | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Alternator (35a)
| 60***20 | Alternator A. (35a) | 1 |
| KD***00 | Collar | 1 |
| KD***72 | Bracket,Rear | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Alternator And Mounting (13a)
| 01***15 | Bolt | 1 |
| 01***15 | Bolt | 1 |
| 01***30 | Bolt | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Alternator And Mounting (35a)
| 01***22 | Bolt | 1 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 1 |
| 01***00 | Bolt (M10-1.50x100) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Balancer
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
| 04***19 | Key,(Dk025805-1910) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Camshaft And Tappet
| 01***25 | Bolt - Rear Guard Mounting | 2 |
| 01***36 | Washer,Radio Controlled Slag Handling | 2 |
| 04***28 | Key, Plain Woodruff | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Corrosion Resistor
| 01***35 | Bolt,(Without Auto Priming System) | 4 |
| 01***80 | Bolt, Mount Strainer Flange | 1 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 4 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Crankshaft
| 04***50 | Key | 1 |
| 04***80 | Key,Seal | 1 |
| 61***70 | Main Metal A | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Cylinder Block (1/2)
| 01***22 | Stud | 5 |
| 01***30 | Stud | 1 |
| 01***60 | Stud | 6 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Cylinder Block (2/2)
| 01***14 | Bolt | 24 |
| 01***08 | Nut,R.H. Thread | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Cylinder Head
| 01***25 | Bolt - Rear Guard Mounting | 2 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 4 |
| 01***36 | Washer,Radio Controlled Slag Handling | 2 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Cylinder Head Cover
| 01***25 | Bolt,(Without Auto Priming System) | 3 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 3 |
| 07***13 | Hose | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Exhaust Manifold And Muffler
| 01***80 | Bolt | 8 |
| 01***35 | Bolt | 2 |
| 01***40 | Bolt | 3 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Flywheel And Flywheel Housing
| 01***50 | Bolt | 2 |
| 01***40 | Bolt,(Not Used With Cab) | 4 |
| 01***50 | Screw | 4 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Fuel Filter And Mounting(#10544-24223)
| 01***55 | Bolt,(For Suction? Reversible Fan) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
| 01***16 | Washer,Radio Controlled Slag Handling | 2 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Fuel Filter And Mounting(#24224-)
| 01***55 | Bolt,(For Suction? Reversible Fan) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
| 01***16 | Washer,Radio Controlled Slag Handling | 2 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Fuel Injection Piping
| 01***25 | Bolt (M6-1.00x25) | 6 |
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***19 | Washer,(Not Used With Ventilator) | 6 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Fuel Injection Pump (Coupling)
| DK***00 | Plate | 4 |
| DK***00 | Bolt | 4 |
| DK***00 | Coupling | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Fuel Injection Pump (Feed Pump)
| DK***00 | Spring,Piston | 1 |
| DK***20 | Piston | 1 |
| DK***40 | Feed Pump Ass'Y | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Fuel Injection Pump (Governor)
| DK***00 | Adapter | 1 |
| DK***00 | Cover | 1 |
| DK***00 | Nut,Cap | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Fuel Injection Pump (Pump)
| 61***00 | Injection Pump Ass'Y | 1 |
| DK***10 | Washer,Spring | 1 |
| DK***00 | Shim Ass'Y | 2 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Fuel Injection Pump And Mounting
| 01***70 | Bolt | 4 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Fuel Injection Pump Lubricating Oil Piping
| 01***16 | Bolt,(For Slag Handling) | 1 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 1 |
| 07***12 | Gasket,(Without Air Compressor Type) (K2) | 2 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Gasket Kit
| 04***35 | Pin,Cotter? Block And Collar | 4 |
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Gear Case Cover And Front Support
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***75 | Bolt,(For D57sr) | 15 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Lubricating Oil Cooler
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***45 | Bolt,(S6d155-4b) | 4 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Lubricating Oil Filter(#10544-24223)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***50 | Bolt - Torque Converter Totransmission Mounting | 4 |
| 01***04 | Nut,(For 50a Alternator) | 2 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Lubricating Oil Filter(#24224-)
| 01***50 | Bolt - Torque Converter Totransmission Mounting | 4 |
| 01***36 | Washer,Radio Controlled Slag Handling | 4 |
| 01***23 | Washer, Flat | 4 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Lubricating Oil Pump
| 01***50 | Bolt | 2 |
| 01***08 | Nut,R.H. Thread | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 6 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Lubricating Oil Strainer
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Oil Pan
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***22 | Bolt,(Cold Terrain Spec.) | 24 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Piston And Connecting Rod
| 61***20 | Ring | 8 |
| 61***15 | Bolt,(Service Parts) | 4 |
| 61***22 | Nut,(Service Parts) | 4 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Rocker Arm
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
| 04***35 | Pin,Cotter? Block And Collar | 2 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Safety Relay And Starting Motor Relay
| 61***13 | Signal | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Starting Motor (5.5kw)(#10544-19131)
| 60***91 | Starting Motor A.,(5.5kw)(See Fig.545) | 1 |
| 60***92 | Starting Motor A.,(5.5kw)(See Fig.545) | 1 |
| KD***80 | Shift Lever Ass'Y | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Starting Motor (5.5kw)(#19132-)
| 60***93 | Starting Motor A.,(5.5kw)(See Fig.547) | 1 |
| 60***94 | Starting Motor A.,(5.5kw) | 1 |
| KD***90 | Switch Ass'Y | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Stating Motor And Mounting
| 01***45 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***36 | Washer,Spring | 3 |
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Water Manifold And Thermostat
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***22 | Bolt,(Cold Terrain Spec.) | 9 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 13 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Water Pump And Cooling Fan
| 01***30 | Bolt,(For France Noise Suppression) | 6 |
| 01***50 | Bolt | 2 |
| 01***65 | Bolt,(For Suction Fan)(4d130-1d) | 11 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Water Separator
| 07***60 | O-Ring,(For Pc750?800?1800) (A2610) | 1 |
| 60***00 | Water Separator A.,(4d105-5h? 4d105-5t) | 1 |
| 60***60 | Plug,Drain (4d105-5h? 4d105-5t) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : 4d130-1e S/N 10544-Up : Water Separator And Mounting
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
Engine Related Parts And Electrical System
Komatsu : D53a-16(S/N 65001-Up) : Engine Related Parts And Electrical System : Battery And Switch
| 01***14 | Bolt | 2 |
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Engine Related Parts And Electrical System : Decelerator Pedal(#65001-68000)
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 6 |
| 01***30 | Bolt | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Engine Related Parts And Electrical System : Decelerator Pedal(#68001-)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***60 | Bolt | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Engine Related Parts And Electrical System : Electrical System(#65001-68000)
| 01***16 | Bolt (Welded) | 2 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 6 |
| 01***08 | Screw | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Engine Related Parts And Electrical System : Electrical System(#68001-)
| 01***16 | Bolt (Welded) | 2 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 11 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 3 |
Komatsu : D53a-16(S/N 65001-Up) : Engine Related Parts And Electrical System : Engine Mounting Parts
| 01***45 | Bolt | 4 |
| 01***00 | Bolt | 2 |
| 13***10 | Bracket | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Engine Related Parts And Electrical System : Fuel Control Lever(#65001-68000)
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Engine Related Parts And Electrical System : Fuel Control Lever(#68001-)
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Engine Related Parts And Electrical System : Fuel Tank
| 01***12 | Bolt (M8-1.25x12) | 2 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 3 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
Komatsu : D53a-16(S/N 65001-Up) : Engine Related Parts And Electrical System : Instrument Panel
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 2 |
| 01***16 | Screw | 8 |
| 01***19 | Washer,Spring | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Engine Related Parts And Electrical System : Radiator And Piping
| 01***20 | Bolt,(Large Capacity Type) (Std) | 60 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Engine Related Parts And Electrical System : Radiator Cover
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 24 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***10 | Bolt (M10x1.50x10) | 6 |
Guard
Komatsu : D53a-16(S/N 65001-Up) : Guard : Dashboard And Fender
| 01***20 | Bolt,(Used When Towing Winch) | 6 |
| 01***25 | Bolt - Rear Guard Mounting | 9 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 8 |
Komatsu : D53a-16(S/N 65001-Up) : Guard : Engine Bottom Guard
| 01***30 | Bolt,Radio Controlled Slag Handling | 8 |
| 01***40 | Bolt,(For Center Guard) | 6 |
| 01***45 | Bolt,(For Slag Handling) | 6 |
Komatsu : D53a-16(S/N 65001-Up) : Guard : Engine Hood And Guard
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Guard : Equalizer Bar
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 3 |
| 01***35 | Bolt | 2 |
| 01***55 | Bolt, Fuel Tank Mounting | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Guard : Hitch
| 01***90 | Bolt (Kit) | 4 |
| 01***60 | Bolt (Ger) | 1 |
| 01***15 | Nut (Ger) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Guard : Hitch (Except Japan)
| 01***90 | Bolt (Kit) | 4 |
| 01***60 | Bolt (Ger) | 1 |
| 01***15 | Nut (Ger) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Guard : Operator'S Seat
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 6 |
| 01***25 | Bolt - Rear Guard Mounting | 3 |
Komatsu : D53a-16(S/N 65001-Up) : Guard : Operator'S Seat (Except Japan)
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 6 |
| 01***25 | Bolt - Rear Guard Mounting | 3 |
Komatsu : D53a-16(S/N 65001-Up) : Guard : Rear Frame And Cover
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
Optional Parts
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : 6-Track Rollers
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***55 | Bolt,(For Long Track) | 32 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 12 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Angle Rake Dozer
| 01***55 | Bolt,(For France Noise Suppression) | 4 |
| 01***14 | Nut | 4 |
| 01***42 | Washer,Spring (For Pedal Steering) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Back-Up Alarm And Wiring
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***20 | Screw | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Canopy
| 01***35 | Bolt,(For Pedal Steering) | 8 |
| 01***45 | Bolt,(For Slag Handling) | 4 |
| 01***50 | Bolt, Radiator To Frame | 8 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Compressor Related Parts-Air Conditioner (For Rops Cab)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***75 | Bolt,(For Adjusting) | 3 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Counter Weight (For Angle Rake)
| 01***90 | Bolt (Kit) | 6 |
| 01***19 | Nut - M24 | 2 |
| 01***60 | Washer | 8 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Electrical System (For Rops Cab)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 12 |
| 01***08 | Screw, Terminal | 1 |
| 01***20 | Screw - Turn Signal And Parkinglight Mounting | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Electrical Wiring-Air Conditioner (For Rops Cab)
| 01***08 | Screw - Clip Mounting | 1 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 1 |
| 08***14 | Clip, Harness | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Fresh Air And Water Drain-Air Conditioner (For Rops Cab)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
| 07***25 | Tube | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Head Guard
| 01***35 | Bolt | 24 |
| 01***45 | Bolt,(For Slag Handling) | 12 |
| 01***50 | Bolt, Radiator To Frame | 8 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Hot Air Line-Air Conditioner (For Rops Cab)
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Hot Water Line-Air Conditioner (For Rops Cab)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Modified Parts (For Rops Cab)
| 13***10 | Seat | 1 |
| 13***20 | Seat | 1 |
| 13***50 | Dashboard | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Modified Parts-Air Conditioner (For Rops Cab)
| 01***12 | Screw | 57 |
| 14***90 | Washer,(Without Air Con.) | 57 |
| 14***10 | Seat | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Mount Seal-Air Conditioner (For Rops Cab)
| 01***20 | Bolt,(With Auto Emergency Steering) | 16 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 37 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 6 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Perforated Radiator Mask (Single)
| 01***25 | Bolt - Rear Guard Mounting | 4 |
| 01***36 | Washer,Radio Controlled Slag Handling | 4 |
| 04***35 | Pin,Cotter | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Radiator Dust Proof Grid
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 6 |
| 01***32 | Washer, Flat | 6 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : 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 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Refrigerant Line-Air Conditioner (For Rops Cab)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 3 |
| 08***14 | Clip,(For Add.Filter)(Except Japan) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Rops Cab (1/3)
| 01***20 | Bolt,(With Auto Emergency Steering) | 12 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 20 |
| 01***08 | Screw, Terminal | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Rops Cab (2/3)
| 01***20 | Bolt,(With Auto Emergency Steering) | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 16 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 18 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Rops Cab (3/3)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 6 |
| 01***45 | Bolt,(For Travel Motor) (Not Show) | 14 |
| 01***50 | Bolt,(For Tbg/Abe Spec.) | 6 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Rops Canopy
| 01***45 | Bolt,(For Slag Handling) | 14 |
| 01***50 | Bolt, Radiator To Frame | 6 |
| 01***55 | Bolt,(For Long Track) | 8 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Snow Plow (C-Frame Type)
| 01***60 | Bolt,(Except Pll) | 2 |
| 01***50 | Bolt,(For Tree Pusher) | 8 |
| 01***15 | Nut (Op) | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Strengthened Angle Blade
| 01***55 | Bolt,(For France Noise Suppression) | 4 |
| 01***14 | Nut | 4 |
| 01***42 | Washer,Spring (For Pedal Steering), Washer-Spring | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Strengthened Lower Guard
| 01***30 | Bolt,Radio Controlled Slag Handling | 6 |
| 01***40 | Bolt,(For Center Guard) | 2 |
| 01***50 | Bolt, Radiator To Frame | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Swing Drawber
| 01***50 | Bolt, Fuel Tank Mounting - Front Left | 4 |
| 01***65 | Bolt, Tank Mounting - Front | 6 |
| 01***30 | Bolt,(For 187kg And 155kg) | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Track Frame-6 Track Rollers
| 01***30 | Bolt,(For Center Guard) | 34 |
| 01***50 | Screw | 2 |
| 01***40 | Bolt,(For Center Guard) | 22 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Vandalism Protection
| 07***00 | Cap,(For Vandalism) (Not Shown) (Op) | 1 |
| 07***00 | Cap, Locking - Hydraulic Tank Oil Filler Cap | 1 |
| 07***00 | Cap,(For Vandalism Protection) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Optional Parts : Wiring In Rops Cab
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 6 |
| 01***12 | Screw,(Additional Sun Visor) | 1 |
| 01***13 | Washer,Spring(For Wiper Switch Earth) | 1 |
Steering System And Final Drive
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Bevel Gear And Shaft
| 01***10 | Bolt, Mount Flasher | 4 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 6 |
| 01***20 | Bolt | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Brake Band
| 01***35 | Bolt,(For Pedal Steering) | 4 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 2 |
| 01***42 | Washer,Spring (For Pedal Steering) | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Brake Lock Lever(#65001-68000)
| 01***16 | Screw,(For Auto-Emergency Steering) | 1 |
| 01***12 | Washer,(With Body Positioner) | 4 |
| 01***23 | Washer,(With Car Heater) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Brake Lock Lever(#68001-)
| 01***12 | Washer,(With Body Positioner) | 1 |
| 01***23 | Washer,(With Car Heater) | 1 |
| 04***12 | Pin,Cotter (For Ripper) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Brake Pedal And Linkage (1/2)(#65001-65646)
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***20 | Bolt,(Used When Towing Winch) | 2 |
| 01***10 | Nut,(Dust?Drip Proof? Trimming S.) | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Brake Pedal And Linkage (1/2)(#65647-68000)
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***20 | Bolt,(Used When Towing Winch) | 2 |
| 01***50 | Bolt - Torque Converter Totransmission Mounting | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Brake Pedal And Linkage (2/2)(#65001-68000)
| 01***45 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***08 | Nut,L.H. Thread | 1 |
| 01***10 | Nut,(Fig.F2820-01a3-12) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Brake Pedal And Linkage(#68001-)
| 01***70 | Bolt, Heater Hose Clip | 4 |
| 01***07 | Nut? L.H. Thread,L.H. Thread | 2 |
| 01***08 | Nut,L.H. Thread | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Final Drive Gear
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 12 |
| 01***30 | Bolt,(For Center Guard) | 16 |
| 01***13 | Nut | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Final Drive Housing
| 01***40 | Bolt,(Not Used With Cab) | 50 |
| 01***70 | Bolt,(With Wear Guard) | 8 |
| 01***42 | Washer,Spring (For Pedal Steering) | 50 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Sprocket And Shaft
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 16 |
| 01***55 | Bolt,(For France Noise Suppression) | 12 |
| 01***40 | Bolt,(Not Used With Cab) | 8 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Steering Case And Main Frame
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(For Slag Handling) | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Steering Case Cover
| 01***20 | Bolt,(Large Capacity Type) (Std) | 6 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Steering Clutch
| 01***12 | Screw | 2 |
| 01***10 | Nut,(For Slag Handling) | 2 |
| 06***17 | Bearing | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Steering Control Valve (1/2)
| 01***35 | Bolt,(Without Auto Priming System) | 2 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 1 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Steering Control Valve (2/2)
| 01***18 | Bolt | 5 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 5 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Steering Lever And Linkage (1/2)(#65001-68000)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***60 | Bolt, Trunnion Cap | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Steering Lever And Linkage (1/2)(#68001-)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***70 | Bolt, Heater Hose Clip | 4 |
| 01***45 | Bolt,(For Slag Handling) | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Steering Lever And Linkage (2/2)(#65001-68000)
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***45 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***08 | Nut? L.H. Thread,L.H. Thread | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Steering Lever And Linkage (2/2)(#68001-)
| 01***30 | Bolt,(Cold Terrain Spec.) | 4 |
| 01***25 | Bolt - Rear Guard Mounting | 2 |
| 01***06 | Nut? L.H. Thread,L.H. Thread (For Chinese) | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Steering Oil Filter
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
| 07***10 | O-Ring,(F4350-62a0 -5 ), O-Ring; Komatsu S/N 22***01 & Abv - Was 07000-02010, O-Ring; Was 07000-02010 | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Steering Oil Piping
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***30 | Bolt,(For France Noise Suppression) | 10 |
Komatsu : D53a-16(S/N 65001-Up) : Steering System And Final Drive : Steering Oil Pump
| 04***18 | Ring, Snap | 1 |
| 07***60 | Seal,Oil | 1 |
| 07***03 | Pump Ass'Y,(Fal 028-203) | 1 |
Tool And Kit
Komatsu : D53a-16(S/N 65001-Up) : Tool And Kit : Kit
| 04***45 | Pin,Cotter? Valve | 1 |
| 04***25 | Pin,Cotter? Link Pin | 4 |
| 06***04 | Seal,(For R.H. Steering) | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Tool And Kit : Tool
Torque Convertor And Transmission
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : 1st Clutch
| 01***30 | Bolt,Radio Controlled Slag Handling | 8 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 8 |
| 01***36 | Washer,Radio Controlled Slag Handling | 16 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : 2nd Clutch And 3rd Clutch
| 01***80 | Bolt,(Shim 5 Pieces Over) | 3 |
| 01***36 | Washer,Radio Controlled Slag Handling | 3 |
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 5 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Damper
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 18 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 12 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 12 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Forward Clutch And Reverse Clutch
| 01***20 | Bolt,(Large Capacity Type) (Std) | 3 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 3 |
| 04***14 | Pin, Dowel | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Torqflow Transmission Case
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 11 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Torqflow Transmission Case Cover And Lever
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 10 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Torqflow Transmission Control Lever
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
| 01***06 | Nut? L.H. Thread,R.H. Thread | 2 |
| 01***08 | Nut,R.H. Thread | 3 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Torqflow Transmission Control Valve (1/2)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Torqflow Transmission Control Valve (2/2)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***55 | Bolt,(For Suction? Reversible Fan) | 4 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Torqflow Transmission Lubrication Valve
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***55 | Bolt,(For Suction? Reversible Fan) | 4 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Torqflow Transmission Mounting
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***40 | Bolt,(Not Used With Cab) | 12 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Torqflow Transmission Oil Filter
| 01***30 | Bolt,Radio Controlled Slag Handling | 11 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 1 |
| 01***36 | Washer,Radio Controlled Slag Handling | 11 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Torqflow Transmission Oil Piping
| 01***20 | Bolt,(Large Capacity Type) (Std) | 3 |
| 01***30 | Bolt,(For France Noise Suppression) | 10 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 16 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Torqflow Transmission Oil Pump
| 04***18 | Ring,Snap (Itl) | 1 |
| 07***60 | Seal (Kit) | 1 |
| 07***03 | Pump Ass'Y,(Far040) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Torqflow Transmission Rear Cover
| 01***45 | Bolt,(For Suction? Reversible Fan) | 6 |
| 01***40 | Bolt,(Not Used With Cab) | 2 |
| 01***60 | Screw | 9 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Torque Convertor Housing
| 01***20 | Bolt,(Large Capacity Type) (Std) | 6 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***30 | Bolt,(For France Noise Suppression) | 10 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Turbine? Stator And Torque Convertor Valve
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 8 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 6 |
Komatsu : D53a-16(S/N 65001-Up) : Torque Convertor And Transmission : Universal Joint
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 16 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 1 |
| 07***45 | Bolt | 8 |
Track
Komatsu : D53a-16(S/N 65001-Up) : Track : Carrier Roller
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***45 | Bolt,(For Slag Handling) | 16 |
Komatsu : D53a-16(S/N 65001-Up) : Track : Front Idler
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***40 | Bolt,(For Center Guard) | 4 |
| 01***60 | Bolt, Hanger Bearing Mounting | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Track : Recoil Spring
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 6 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 8 |
Komatsu : D53a-16(S/N 65001-Up) : Track : Track Frame
| 01***30 | Bolt,(For Center Guard) | 34 |
| 01***50 | Screw | 2 |
| 01***40 | Bolt,(For Center Guard) | 18 |
Komatsu : D53a-16(S/N 65001-Up) : Track : Track Roller
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***55 | Bolt,(For Long Track) | 56 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 12 |
Komatsu : D53a-16(S/N 65001-Up) : Track : Track Shoe (Lubricate Type)(#68001-)
| 01***13 | Nut,Plate (Welded) | 156 |
| 01***48 | Washer,Spring? Single Flange | 156 |
| 01***22 | Nut? Shoe (Kit) | 296 |
Komatsu : D53a-16(S/N 65001-Up) : Track : Track Shoe (Master Pin Type)(#65001-68000)
| 01***22 | Nut? Shoe (Kit) | 312 |
| 13***00 | Track Shoe Ass'Y | 1 |
| 13***01 | Track Shoe Ass'Y | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Track : Track Shoe (Master Pin Type)(#68001-)
| 01***13 | Nut,Plate (Welded) | 156 |
| 01***48 | Washer,Spring? Single Flange | 156 |
| 01***22 | Nut? Shoe (Kit) | 312 |
Work Equipment
Komatsu : D53a-16(S/N 65001-Up) : Work Equipment : Blade
| 01***55 | Bolt,(For France Noise Suppression) | 4 |
| 01***14 | Nut | 4 |
| 01***42 | Washer,Spring (For Pedal Steering) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Work Equipment : Dozer Frame
| 01***80 | Bolt, Mount Strainer Flange | 2 |
| 01***60 | Screw | 16 |
| 01***45 | Bolt, Fuel Tank Mounting - Front Right | 16 |
Work Equipment Control System
Komatsu : D53a-16(S/N 65001-Up) : Work Equipment Control System : Blade Control Lever
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***25 | Bolt - Rear Guard Mounting | 1 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Work Equipment Control System : Blade Lift Cylinder
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***35 | Bolt,(Without Auto Priming System) | 4 |
| 01***50 | Bolt,(For Trimming Dozer) | 4 |
Komatsu : D53a-16(S/N 65001-Up) : Work Equipment Control System : Hydraulic Control Valve (1/2)
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 2 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Work Equipment Control System : Hydraulic Control Valve (2/2)
| 01***35 | Bolt, Mounting - Flywheel Housing End | 5 |
| 01***55 | Bolt,(For Suction? Reversible Fan) | 3 |
| 01***70 | Bolt, Spacer | 2 |
Komatsu : D53a-16(S/N 65001-Up) : Work Equipment Control System : Hydraulic Oil Piping (1/2)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***80 | Bolt, Mount Strainer Flange | 4 |
| 01***85 | Bolt, Mount Solenoid Valve Body | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Work Equipment Control System : Hydraulic Oil Piping (2/2)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(For France Noise Suppression) | 10 |
| 01***45 | Bolt,(For Suction? Reversible Fan) | 8 |
Komatsu : D53a-16(S/N 65001-Up) : Work Equipment Control System : Hydraulic Pump
| 04***18 | Ring,Snap (Itl) | 1 |
| 07***62 | Seal,Oil (Itl) | 1 |
| 70***00 | Pump Ass'Y,(Kal080) | 1 |
Komatsu : D53a-16(S/N 65001-Up) : Work Equipment Control System : Hydraulic Tank (1/2)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 53 |
| 01***40 | Bolt,(Not Used With Cab) | 5 |
Komatsu : D53a-16(S/N 65001-Up) : Work Equipment Control System : Hydraulic Tank (2/2)
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 19 |
| 01***70 | Bolt, Spacer | 1 |
Frequently asked questions
What engine powers the Komatsu D53A-16 (S/N 65001-UP)?
A Komatsu 4D130-1E turbocharged 4-cylinder diesel: 8.50 L displacement, 82 kW (110 HP) at 1900 rpm. It's a fully mechanical engine with mechanical fuel injection, no ECM or electronic controls.
What is the operating weight of the D53A-16?
About 12,170 kg (26,830 lb) as equipped with the angling dozer blade. Weight varies a bit by blade type and configuration across the A, P, and S variants of this generation, so check your machine's plate for the exact figure.
What replaced the Komatsu D53A-16?
Komatsu moved this chassis to a new serial block with the D53A-17 (S/N 80001-UP), a separately manualed generation update, and later to the D53A-18. All three share the same basic dozer class and layout.
What D53A-16(S/N 65001-UP) owners discuss
What's a common steering complaint owners report on the D53A-16, and what causes it?
Owners report the dozer suddenly refusing to turn one direction, or pulling down on one side, after running fine previously. On this mechanical steering-clutch-and-brake-band design, that symptom is almost always wear or maladjustment in the clutch discs or brake bands rather than a hydraulic fault. The linings wear gradually with hours and need periodic adjustment at the external clutch case nut to keep full engagement; skipping that adjustment lets play build up until one side won't disengage or engage cleanly. Because a steering clutch that won't fully release or engage is a safety issue on a machine this size, have your dealer verify clutch and brake band adjustment and lining wear before returning the machine to full work.
How does the blade and ripper hydraulics typically behave as this dozer ages?
Blade and ripper movement runs off a straightforward pump-and-valve hydraulic circuit with no electronic controls, so problems show up as a feel change rather than a warning light. Owners flag gradually slowing lift, tilt, or ripper cycle times as the first sign of internal pump wear or a developing cylinder leak, especially once the machine has significant hours on it. A simple field check is cycling the blade and ripper through full travel a few times from cold and watching for delayed response, drift under load, or leaks at cylinder rod seals and hose fittings.
Are there known cold-starting quirks with this engine's mechanical injection system?
This dozer runs the turbocharged Komatsu 4D130-1E, a mechanically governed injection diesel with no electronic engine management, so a hard-start complaint on this machine traces to fuel delivery or compression, not a sensor or module fault. Owners of similarly equipped mechanical Komatsu dozers describe cranking-but-not-starting problems caused by air trapped in the injection lines, a clogged inlet screen at the injection pump, or gummed injectors after a long sit. The usual field fix is pressurizing the tank, cracking lines at the pump and each injector, and bleeding air out while cranking; a cleaned inlet screen and fresh fuel resolve a lot of no-starts that look electrical but aren't.
Do owners report oil consumption or smoking issues with this engine?
On mechanical diesels of this generation, white smoke and rising oil consumption are most often traced to overfilling past the dipstick mark, which raises crankcase pressure and pushes oil out through the breather, rather than a design flaw in the engine. Owners troubleshoot by confirming the fill level first, then checking the breather path for blockage and ruling out external gasket or seal leaks before assuming a ring or bearing problem. Persistent blue-white smoke at working temperature after the fill level is corrected is worth a compression check rather than more oil-and-hope.
What undercarriage wear pattern should owners expect on this dozer?
As with any crawler dozer of this size and era, the undercarriage - tracks, rollers, idlers, and sprockets - is the single highest wear-cost system and drives a large share of total ownership cost. Owners note that uneven or accelerated wear tracks back to track tension not being kept in spec: running too tight or too loose both speed up pin, bushing, and sprocket wear. Regular tension checks and keeping the machine off abrasive or rocky ground where practical are the most commonly cited ways to stretch undercarriage life on this class of machine.
What about final drive and track adjuster problems?
Grease pushing back out of the track adjuster nipple, or a track that won't hold tension, usually points to a clogged passage or worn adjuster seal rather than a bad grease gun, and owners note it often takes pulling and cleaning the adjuster once hardened grease blocks the line. The final drive housings themselves run on oil, and owners caution against substituting grease if oil-related leak symptoms show up - it masks the leak short-term but accelerates gear and bearing wear. Persistent final-drive or track-adjuster leaks are worth having your dealer verify before they turn into a full housing or seal replacement job.
What should a buyer check before purchasing a used D53A-16(S/N 65001-UP)?
Start the engine cold if possible and watch for excess smoke, hard starting, or knock, since this machine has no fault codes to lean on and everything is judged by ear and eye. Cycle the steering clutches and brakes through several turns each direction, feeling for lag, slip, or uneven pull, and check how much adjustment travel is left before the linings need replacing. Walk the undercarriage for wear on tracks, rollers, idlers, and sprockets, check track tension, and confirm the track adjusters take and hold grease properly. Cycle the blade and ripper through full travel looking for slow or drifting hydraulics, and look under the machine for final drive, track adjuster, and engine oil leaks. Ask for maintenance and oil-analysis records if available - on a machine this age, documented service history matters more than the hour meter reading. Because steering and braking are safety-critical on a dozer this size, have your dealer verify clutch/brake condition and undercarriage wear measurements before relying on the machine for full production work.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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