Komatsuengine(no series)

Komatsu 4D130-1C-A(S/N 10544-UP)

Maintenance schedule, common problems & OEM parts breakdown

Search live 4D130-1C-A(S/N 10544-UP) parts

The 4D130-1C-A(S/N 10544-UP) is a naturally aspirated four-cylinder diesel in Komatsu's 4D130-1 series, displacing roughly 8.75-8.8 liters (534 cu in) and rated near 82 kW (110 hp) at 1,900 rpm. This -A-suffix build powers the angle-blade Komatsu D50A-16 crawler dozer (machine S/N 65001-UP), a standard-track carrier with an operating weight of about 11,880 kg (26,191 lb). A related -P suffix engine powers the D50P-16 sibling on the same chassis generation, and low-ground-pressure D50PL-16 units are grouped with the same family in parts coverage, though the engine-suffix tie for that variant is less firmly documented.

Within the 4D130-1 series, the letter suffix marks which equipment fitment the engine was calibrated for rather than a change in base displacement. This naturally aspirated 1C-A suffix is specific to the D50A-16 angle-blade dozer and its close D50-series siblings; other dozer classes and configurations from the same era use different 4D130 suffix letters or a different engine entirely, so confirming the exact suffix and serial range matters when sourcing parts. These older mechanical-diesel dozers remain common in developing-market earthmoving and quarry fleets because the simple mechanical fuel system is straightforward to keep running and rebuild without dealer diagnostic tools, and wear parts are still available in the aftermarket, which keeps the engine relevant in the used-parts market today.

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 4D130-1C-A(S/N 10544-UP) specifications

Engine

Engine model	4D130-1C (S/N 10544-UP), Komatsu 4-cylinder direct-injection diesel
Gross power	82 kW (110 hp) @ 1900 rpm
Displacement	8.75-8.8 L (534 cu in)
Cylinders	4, water-cooled, in-line, naturally aspirated
Emissions tier	Not published for this serial range; engine predates modern emissions-tier certification and is not tier-rated

Weights

Operating weight (standard-track carrier)	11,880 kg (26,191 lb)
Ground pressure	48.1 kPa (0.48 bar / 7.0 psi)

Dimensions

Overall length with blade	4.57 m (15.0 ft)
Overall length without blade	3.61-3.63 m (11.85-11.9 ft)
Width over tracks	2.34-2.35 m (7.68-7.7 ft)
Height to top of cab	2.86-2.87 m (9.39-9.4 ft)
Ground clearance	0.33-0.34 m (1.07-1.1 ft)
Track gauge	1.89 m (6.2 ft)
Track length on ground	2.2-2.23 m (7.22 ft)

Performance

Max travel speed, forward	9.17 km/h (5.7 mph), 4 forward gears
Max travel speed, reverse	8.05 km/h (5.0 mph), 3 reverse gears
Standard dozer blade	Width 3.72-3.75 m, height 0.875 m, capacity 2.8-2.83 cu m, max cut depth 0.59 m
Drawbar pull / gradeability	Not documented for this exact serial range - verify with your dealer

Service capacities (summary)

Fuel tank	240 L (63.5 gal)
Cooling system	50 L (13.3 gal)
Engine oil	Not documented for this exact serial range - verify with your dealer
Hydraulic system	Not documented for this exact serial range - verify with your dealer

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

4D130-1C-A(S/N 10544-UP) fluids & capacities

System	Capacity	Recommended fluid
Engine crankcase (with filter)	Not documented for this exact serial range - verify with your dealer	Komatsu EO engine oil, viscosity grade by ambient temperature per the OMM chart
Cooling system	Not documented for this exact serial range - verify with your dealer	Komatsu AF-NAC coolant/antifreeze
Fuel tank	Not documented for this exact serial range - verify with your dealer	Diesel fuel meeting the OMM cetane/sulfur spec for this engine era
Final drives (each)	Not documented for this exact serial range - verify with your dealer	Komatsu TO gear oil
Grease points	Per fitting, as needed	Komatsu G2-LI multipurpose grease

Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.

Komatsu 4D130-1C-A(S/N 10544-UP) maintenance schedule

Service interval	Tasks
Every 10 h	Check engine oil level before start-up and top up if below the low mark Check radiator coolant level and scan the engine bay for fresh leaks Drain water and sediment from the fuel water separator Check the air cleaner restriction indicator and clean the primary element if dusty Inspect fan belt tension and condition weekly, adjusting deflection if loose Grease water pump and fan pulley fittings on the weekly round
Every 250 h	Change engine oil and replace the full-flow oil filter cartridge Replace the fuel filter cartridge and bleed the mechanical fuel system Clean the air cleaner element and check the dust-ejector valve Listen for tappet noise at idle as an early flag for valve clearance drift Inspect the exhaust manifold for leaks
Every 500 h	Clean the crankcase breather and check for excessive blow-by Check and adjust fan belt and charging belt tension Clean radiator fins and core of packed dust and debris Check battery electrolyte level and clean terminal connections Retorque exhaust manifold mounting hardware
Every 1,000 h	Adjust valve clearance to factory spec on a cold engine Check injection pump timing and recalibrate if drifted Pull injectors to check spray pattern and opening pressure Clean the fuel tank breather and inspect fuel lines for cracking or chafing
Every 2,000 h	Drain and replace coolant, flushing the block and radiator Inspect the water pump for seal weeping and bearing play Check the vibration damper for cracking or fluid separation Inspect starter and alternator brushes and service as needed Check compression on all four cylinders and log the trend
Every 4,000 h	Replace coolant and thermostat together on the extended-service interval Inspect the wiring harness and chassis grounds for corrosion Send an oil sample for full elemental wear analysis ahead of any overhaul decision
Every 8,000 h	Pull the engine for inframe overhaul: rebore or resleeve cylinders and fit new pistons and rings Regrind or replace valve seats and guides and resurface the cylinder head Replace main and rod bearings and check crankshaft journals for out-of-round wear Recalibrate or exchange the injection pump and injector set as a group

Servicing the 4D130-1C-A(S/N 10544-UP) beyond the schedule

Predictive Maintenance & Fluid Analysis

This mechanical, naturally aspirated four-cylinder has no electronic engine management, so trending is the main early-warning tool. Pull an oil sample at every 250-hour change to track wear metals from the wet cylinder liners and main bearings. Watch coolant concentration closely since sustained dozer pushing loads run the block hot. Log compression readings at each 2,000-hour check to catch liner or ring wear before it turns into an unplanned inframe.

Corrective & Common Repairs

Typical fixes on engines this age center on the mechanical injection pump: recalibrating pump timing after fuel-quality drift, and chasing head-gasket weep from repeated heat-cycling under dozer load. Water pump seal replacement and exhaust manifold gasket leaks are common once the engine passes several thousand hours. Because the fuel system is fully mechanical, most of these repairs are field-serviceable without dealer scan tools.

Overhaul & Rebuild Points

At inframe overhaul, expect to address cylinder liner and piston ring wear, main and rod bearing clearance, and valve seat/guide recession in the mechanical head. The injection pump and injector set should be recalibrated or exchanged together rather than piecemeal, since mismatched output across four cylinders drives uneven wear on the reassembled block.

Seasonal & Environment Servicing

Dozer duty in quarry and forestry settings means heavy dust loading on the radiator core and air cleaner; clean both more often than the standard interval when working dry sites. In cold climates, check glow plug or ether-start aids before winter and confirm coolant freeze protection each season. Drain the fuel water separator more frequently in wet or humid conditions to protect the mechanical injection pump from water intrusion.

4D130-1C-A(S/N 10544-UP) common service parts

Part number	Part	Notes
07281-00197	Clamp,(With Pre-Fuel Filter)	Fuel system service	Check fitment →
6114-71-6100	Fuel Filter Ass'Y	Fuel system service	Check fitment →
600-311-8291	Cartridge,Fuel Filter	Fuel system service	Check fitment →
6114-71-6200	Fuel Filter Ass'Y	Fuel system service	Check fitment →
6114-71-6210	Head, Fuel Filter	Fuel system service	Check fitment →

Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.

4D130-1C-A(S/N 10544-UP) fault codes & troubleshooting

Code	Meaning	Likely cause	What to do
No electronic fault code (mechanical engine)	The 4D130-1C-A in this serial range is a mechanically governed, mechanically injected diesel used in the D50-16 series dozers. It has no engine control module, so it cannot generate CID/FMI or CA-style diagnostic codes.	Not applicable - no electronic engine controller is fitted.	Diagnose by mechanical symptom (hard start, low power, overheat, low oil pressure, excess smoke) using the shop manual troubleshooting-by-symptom tables, not a code reader.
Oil pressure warning lamp (red)	Engine oil pressure has dropped below the safe switch threshold.	Low oil level, worn oil pump, clogged suction strainer, or failed pressure switch/sender.	Stop the engine immediately, check oil level and condition, then verify pressure with a mechanical gauge before restarting.
Coolant temperature gauge in red zone / temperature warning lamp	Engine coolant temperature has exceeded the normal operating range.	Low coolant level, slipping or broken fan belt, clogged radiator, or thermostat stuck closed.	Idle down, shut off if lamp stays lit, check coolant level and fan belt once cool, inspect radiator fins for blockage.
Charge (battery) warning lamp	Charging circuit voltage has dropped below normal, alternator not charging.	Broken or slipping alternator belt, worn brushes, or a faulty regulator/alternator.	Check belt tension and condition first, then test alternator output with a multimeter.
Air cleaner restriction indicator (if fitted)	Intake air filter element is loading up and restricting airflow.	Dirty or clogged air cleaner element, or a collapsed intake hose.	Service or replace the air cleaner element and reset the indicator.
Fuel filter / water-in-fuel warning (if fitted)	Fuel filter is restricted or water has accumulated in the fuel-water separator.	Contaminated fuel, water ingress, or a loaded filter element.	Drain the water separator and replace the fuel filter element, then bleed the fuel system.

Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.

4D130-1C-A(S/N 10544-UP) attachments & work tools

Dozer blade

The confirmed factory blade for this angle-blade dozer runs about 3.72-3.75 m (12.2-12.3 ft) wide, 0.875 m (2.87 ft) tall, with roughly 2.8-2.83 cu m (3.7 cu yd) capacity and a maximum cut depth near 0.59 m (1.9 ft), per the factory spec sheet for this model.

Ripper

A rear-mounted ripper was a common factory or dealer-installed option for dozers in this class and era, hydraulically raised and pitched via cylinder. Shank count and exact frame details are not documented for this specific model and serial range - confirm with your dealer.

Undercarriage / track shoe options

Standard-width single-grouser shoes are the base factory fitment for the standard-track carrier. Wider low-ground-pressure shoe options exist within the broader D50 family, but the exact shoe width for this specific serial range is not documented - confirm with your dealer.

Operator protection

A ROPS canopy with an optional enclosed cab is the typical factory configuration for this dozer class and era; a full documented options list for this exact serial range was not found.

Blade mounting

The blade attaches by fixed pin-and-bracket mounts driven by dedicated hydraulic cylinders (lift and angle circuits); this class does not use a universal quick-coupler system, so work tools are not interchangeable on the fly.

Guarding options

Radiator screens and undercarriage guards are commonly available for this size and era of dozer when working in debris, brush, or demolition sites, though a confirmed factory option list for this exact serial range is not documented online.

All 4D130-1C-A(S/N 10544-UP) assemblies by section

Every catalogued assembly group for the Komatsu 4D130-1C-A(S/N 10544-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Cooling And Electrical Systems

Komatsu : 4d130-1c-A(S/N 10544-Up) : Cooling And Electrical Systems : Alternator (13a)

60***50	Alternator A. (13a),(With Non Hardening Pulley)	1
KD***31	Bushing,Insulator	2
KD***80	Packing	1
KD***90	Wire,Read	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cooling And Electrical Systems : Alternator (35a)

60***20	Alternator A. (35a)	1
KD***00	Collar	1
KD***72	Bracket,Rear	1
KD***70	Collar	4

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cooling And Electrical Systems : Alternator And Mounting (13a)

01***15	Bolt	1
01***15	Bolt	1
01***30	Bolt	1
01***30	Bolt,(For Trimming Dozer)	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cooling And Electrical Systems : Alternator And Mounting (35a)

01***22	Bolt	1
01***35	Bolt - Torque Converter Totransmission Mounting	1
01***00	Bolt (M10-1.50x100)	1
01***15	Bolt	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cooling And Electrical Systems : 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
01***29	Washer,Spring (Cold Weather Spec.)	4

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cooling And Electrical Systems : Safety Relay And Starting Motor Relay

61***13

Signal

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cooling And Electrical Systems : 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
KD***60	Metal,Center	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cooling And Electrical Systems : 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
KD***60	Metal,Center	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cooling And Electrical Systems : Stating Motor And Mounting

01***45	Bolt,(Cold Terrain Spec.)	3
01***36	Washer,Spring	3
07***00	O-Ring,(F4350-65a1 -5 )	1
60***91	Starting Motor A.,(5.5kw)(See Fig.545)	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cooling And Electrical Systems : 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
01***75	Bolt,(For D57sr)	2

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Cylinder Block

Komatsu : 4d130-1c-A(S/N 10544-Up) : Cylinder Block : Balancer

01***25	Bolt,(Sandy? Dusty Terrain Spec.)	4
01***30	Washer,Spring(Sandy?Dusty Terrain S.)	4
04***19	Key,(Dk025805-1910)	1
61***30	Plug, No. 4	2

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cylinder Block : Camshaft And Tappet

01***25	Bolt - Rear Guard Mounting	2
01***36	Washer,Radio Controlled Slag Handling	2
04***28	Key, Plain Woodruff	1
07***08	Plug,(Without Oil Pressure Switch)	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cylinder Block : Crankshaft

04***50	Key	1
04***80	Key,Seal	1
61***70	Main Metal A	1
61***00	Main Metal A.,No.5	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cylinder Block : Cylinder Block (1/2)

01***22	Stud	5
01***30	Stud	1
01***60	Stud	6
01***06	Nut, Regular Hexagon (M8-1.25)	6

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cylinder Block : Cylinder Block (2/2)

01***14	Bolt	24
01***08	Nut,R.H. Thread	4
01***30	Washer,Spring(Sandy?Dusty Terrain S.)	4
01***32	Washer,(Not Used With Emergency Str.)	6

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cylinder Block : Flywheel And Flywheel Housing

01***50	Bolt	2
01***40	Bolt,(Not Used With Cab)	4
01***50	Screw	4
01***95	Bolt	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cylinder Block : 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
01***15	Bolt	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cylinder Block : Oil Pan

01***20	Bolt,(Sandy? Dusty Terrain Spec.)	1
01***22	Bolt,(Cold Terrain Spec.)	24
01***30	Bolt,(Cold Terrain Spec.)	2
01***25	Washer,Spring?(Sandy And Dusty Spec.)	27

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cylinder Block : Piston And Connecting Rod

61***20	Ring	8
61***15	Bolt,(Service Parts)	4
61***22	Nut,(Service Parts)	4
61***20	Bushing	2

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Cylinder Head

Komatsu : 4d130-1c-A(S/N 10544-Up) : Cylinder Head : 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
01***08	Nut, Regular Hexagon (M10-1.50)	6

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cylinder Head : 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
01***32	Washer,(With Auto Emergency Steering)	4

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cylinder Head : Cylinder Head Cover

01***25	Bolt,(Without Auto Priming System)	3
01***25	Washer,Spring?(Sandy And Dusty Spec.)	3
07***13	Hose	1
07***26	Clamp	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cylinder Head : Exhaust Manifold And Muffler

01***80	Bolt	8
01***35	Bolt	2
01***40	Bolt	3
01***11	Nut (M14-1.50 Thd), Nut; Was 01582-01411	2

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cylinder Head : 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
61***00	Shaft Ass'Y	2

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Cylinder Head : 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
02***07	Plug	1

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Fuel System

Komatsu : 4d130-1c-A(S/N 10544-Up) : Fuel System : Fuel Filter And Mounting(#10544-23891)

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
07***12	Gasket,Mechanical Pump Piping	2

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Fuel System : Fuel Filter And Mounting(#23892-)

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
07***12	Gasket,Mechanical Pump Piping	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Fuel System : 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
01***25	Washer,Spring?(Sandy And Dusty Spec.)	2

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Fuel System : Fuel Injection Pump (Coupling)

DK***00	Plate	4
DK***00	Bolt	4
DK***00	Coupling	1
DK***40	Washer, Spring	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Fuel System : Fuel Injection Pump (Feed Pump)

DK***00	Spring,Piston	1
DK***20	Piston	1
DK***40	Feed Pump Ass'Y	1
DK***00	Pin	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Fuel System : Fuel Injection Pump (Governor)

DK***00	Adapter	1
DK***00	Cover	1
DK***00	Nut,Cap	1
DK***00	Collar	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Fuel System : Fuel Injection Pump (Pump)

61***00	Injection Pump Ass'Y	1
DK***10	Washer,Spring	1
DK***00	Shim Ass'Y	2
DK***30	Bearing	0

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Fuel System : 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
01***25	Washer,Spring?(Sandy And Dusty Spec.)	4

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Fuel System : 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
07***12	Gasket,Injection Pump Piping	2

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Fuel System : 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
60***00	Water Separator A.,(See Fig.2415)	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Fuel System : 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
01***45	Bolt,(For Suction? Reversible Fan)	2

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Lubricating Oil System

Komatsu : 4d130-1c-A(S/N 10544-Up) : Lubricating Oil System : 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
01***50	Bolt	2

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Lubricating Oil System : Lubricating Oil Filter(#10544-23891)

01***20	Bolt,(Sandy? Dusty Terrain Spec.)	2
01***50	Bolt - Torque Converter Totransmission Mounting	4
01***04	Nut,(For 50a Alternator)	2
01***13	Washer,(For Alternator 50a)	2

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Lubricating Oil System : Lubricating Oil Filter(#23892-)

01***50	Bolt - Torque Converter Totransmission Mounting	4
01***36	Washer,Radio Controlled Slag Handling	4
01***23	Washer, Flat	4
02***07	Plug	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Lubricating Oil System : Lubricating Oil Pump

01***50	Bolt	2
01***08	Nut,R.H. Thread	4
01***30	Washer,Spring(Sandy?Dusty Terrain S.)	6
07***08	Plug,(Without Oil Pressure Switch)	2

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Lubricating Oil System : 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
01***25	Washer,Spring?(Sandy And Dusty Spec.)	2

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Optional Parts

Komatsu : 4d130-1c-A(S/N 10544-Up) : Optional Parts : Air Cleaner (Sandy And Dusty Spec.)

01***32	Nut,Wing	1
01***70	Nut,Wing	1
01***16	Washer,Radio Controlled Slag Handling	4
60***30	Body	1

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Komatsu : 4d130-1c-A(S/N 10544-Up) : Optional Parts : 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
01***08	Nut, Regular Hexagon (M10-1.50)	4

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Tool And Kit

Komatsu : 4d130-1c-A(S/N 10544-Up) : Tool And Kit : 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
07***10	O-Ring - Strainer Cover	1

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4D130-1C-A(S/N 10544-UP) serial number reference

The machine's PIN/serial plate is stamped on the frame; check dealer documentation for the exact spot on a given unit. The engine serial/type plate is a separate tag mounted on the engine block. Read the engine tag as base model (4D130), build letter (1C), then suffix letter (A, P, etc.) marking the equipment-specific fitment, followed by the engine serial number. Match both the machine serial (e.g. 65001-UP) and the engine serial (10544-UP) to the parts book before ordering, since different suffix engines can share the same machine serial break, and different dozer size classes (D50-series vs D53-series) can share the same base 4D130 engine family under different suffix letters.

Prefix	Identifies	Notes
65001	D50A-16 crawler dozer (angle-blade), machine S/N 65001-UP	Paired with engine 4D130-1C-A, engine S/N 10544-UP, per Komatsu parts and service coverage for this model and serial range. Naturally aspirated inline-4 diesel in the roughly 80 kW (110 hp) class. Do not mix with D50P-16, which shares the same 65001-UP machine serial start but pairs with the related 4D130-1C-P engine suffix, not 4D130-1C-A. Also do not mix with the D53A-16/D53P-16/D53S-16/D53S-17 family (larger chassis class), which uses the different 4D130-1D/1E/1F suffix engines, not 1C-A.
65001	D50PL-16 crawler dozer, low ground pressure version, machine S/N 65001-UP	Grouped with D50A-16 and D50P-16 under shared 4D130-family parts coverage (filters, hydraulic pumps and related components are cross-listed across all three). Tie to the specific 4D130-1C-A engine suffix, as opposed to the -1C-P used on D50P-16, is not independently confirmed by a distinct primary source - confirm with dealer before ordering engine-specific parts.

Frequently asked questions

What engine powers the 4D130-1C-A (S/N 10544-UP)?

A Komatsu 4D130-1 series naturally aspirated four-cylinder diesel, about 8.75-8.8 liters (534 cu in) displacement, rated near 82 kW (110 hp) at 1,900 rpm. Confirm exact output against your engine nameplate, since the same base engine covers a few letter-suffix running changes.

What is the operating weight of the machine this engine powers?

The host D50A-16 crawler dozer (standard-track carrier) runs about 11,880 kg (26,191 lb) operating weight. This is the machine's operating weight, not the engine's own weight.

What replaced this engine?

Komatsu's D50-series dozer lineage continued through further running changes in this era. A confirmed successor engine and model for this exact D50A-16 serial range is not documented in available sources - check with your Komatsu dealer for the current parts-book cross-reference.

What 4D130-1C-A(S/N 10544-UP) owners discuss

What machines actually carry the 4D130-1C-A (S/N 10544-UP)?

This engine pairs with the Komatsu D50A-16 angle-blade crawler dozer (machine S/N 65001-UP). A closely related D50PL-16 low-ground-pressure variant is grouped with it in parts coverage, though its exact engine-suffix tie is less firmly documented. Confirm the pairing against your machine's serial plate and parts book rather than assuming from the engine tag alone.

Why does it smoke white on a cold start, and is that normal?

Some white smoke on a cold crank is normal for this generation of mechanically-injected diesel, especially in cool weather, and should clear once the engine warms and combustion stabilizes. Owners flag it as a real problem when the smoke lingers past warm-up or gets worse over time. Common causes reported: a dribbling injector washing fuel down the cylinder wall instead of atomizing it, a head gasket beginning to leak coolant into a cylinder, or worn valve guides pulling oil past the stems. A compression check plus a look at coolant and oil for cross-contamination is the standard first step before condemning the injection pump.

What goes wrong with the fuel system on this engine?

This series uses a mechanical inline injection pump, and the recurring complaints are plunger and delivery-valve wear after long service, and a fuel inlet screen inside the pump's banjo fitting that clogs and starves the pump on older units. Weak or uneven power, hard starting, and rough idle are the usual symptoms owners chase back to the pump or to dirty/aged injectors rather than the engine itself. Pump calibration and injector testing are precision jobs - have your dealer or an authorized fuel-injection shop verify before doing pump timing or internal pump work yourself.

Does the valve train need regular attention on a 4D130-1C-A?

Yes. This is a fully mechanical valve train with no electronic lash compensation, so clearance has to be checked and reset by hand on a cold engine at the interval in the shop manual. Owners who skip this report rough running, ticking noise, and gradual power loss that gets blamed on the fuel system when it's actually a valve lash problem. Because this is a running-engine adjustment with the rocker cover off, have your dealer or a qualified diesel tech verify clearance settings if you're not familiar with the procedure.

What electrical or sensor problems show up on this engine?

This is a pre-electronic, mechanically governed diesel, so there's no ECM or sensor network to fault out. The electrical complaints that do come up are conventional: weak or failing starters, alternator output dropping off with age, and glow-plug or intake-heater relay issues causing hard cold starts that get misdiagnosed as a fuel problem. Chase the simple charging and starting circuit first before assuming an injection issue.

What cooling-system issues are typical for this engine class?

Owners of engines from this era report water pump seal leaks and radiator cores clogging with scale or debris after years of service, both of which show up as gradual overheating rather than a sudden failure. Persistent coolant loss with no visible external leak points back to a head gasket or cracked head rather than the water pump - worth ruling out with a pressure test before replacing cooling parts.

What should I check before buying a machine with this engine?

Pull the compression on all cylinders and compare across them - an even, healthy spread matters more than the absolute number. Check oil for a fuel or coolant smell and coolant for oil contamination. Run the engine cold and watch how long white smoke persists at startup. Listen for valve-train ticking that suggests lash hasn't been checked in a while. Confirm the injection pump doesn't leak at the fittings and that the engine holds a steady idle without hunting. Verify charging voltage and starter draw are within normal range. None of this substitutes for a shop compression and injector test - have your dealer verify before you commit to a purchase.

Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.

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