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Komatsu SA12V140-1S-A(S/N 10001-UP)

Maintenance schedule, common problems & OEM parts breakdown

Search live SA12V140-1S-A(S/N 10001-UP) parts

The Komatsu SA12V140-1S-A (S/N 10001-UP) is a heavy-duty, water-cooled, turbocharged and aftercooled V12 diesel engine designed for large-scale mining and quarry applications. It powers the Komatsu 330M rigid haul truck, a mechanical-drive vehicle from the Dresser/Komatsu Haulpak lineage built for gross vehicle weights in the 330,000 lb (150 t) class. The engine features a 140 mm bore and 165 mm stroke, displacing 30.5 liters (30,480 cc). It is paired with a torque converter and powershift transmission, driving a mechanical driveline and axle final drives. The machine is configured for off-highway mine and construction haul routes, utilizing 27.00-49 tires. Production years are not explicitly documented for this exact serial range in available public sources, but the engine series spans multiple factory-documented serial blocks representing a single running production series with incremental running changes rather than full model redesigns.

Across its production run, the SA12V140-1S-A saw incremental factory running changes reflected in the progression of serial ranges and shop manual codes covering the engine, powertrain, and chassis systems. The machine matters in the used and parts market today because it is a fully mechanical machine with no ECM, fault-code diagnostics, or sensor network. This mechanical simplicity makes it straightforward to maintain, diagnose with gauges and visual inspection, and rebuild using conventional mechanical shop practices. Buyers value predictable rebuild costs and parts interchangeability over the electronic diagnostics of later drive-system trucks. The broad base of engine, powertrain, and axle components shared across the SA12V140-1 build blocks keeps this generation active in mining, quarry, and construction fleets well beyond typical 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 SA12V140-1S-A(S/N 10001-UP) specifications

Engine

ModelSA12V140-1
ConfigurationV-type 12-cylinder, water-cooled, 4-cycle, turbocharged and aftercooled
Displacement30.5 L (30,480 cc)
Bore x Stroke140.0 mm x 165.0 mm
Firing OrderR1 — L1 — R5 — L5 — R3 — L3 — R6 — L6 — R2 — L2 — R4 — L4
Net Power (Flywheel)574 kW (770 HP) @ 2,000 rpm; 588 kW (789 HP) @ 2,000 rpm; 603 kW (808 HP) @ 2,000 rpm
Governor TypeBOSCH PE-P (PS7S) type; ZEXEL electronic control type; BOSCH RSUV centrifugal, all speed type (varies by configuration/series)
Emissions TierNot documented for this exact serial range — verify with dealer

Weights

Dry Weight3,100 kg; 3,300 kg (varies by configuration/series)
Operating WeightNot documented for this exact engine configuration — verify with dealer
Ground PressureNot published

Dimensions

Overall Length1,715 mm; 2,000 mm (varies by configuration/series)
Overall Width1,450 mm; 1,515 mm (varies by configuration/series)
Overall Height (excluding exhaust pipe)1,475 mm; 2,000 mm (varies by configuration/series)
Overall Height (including exhaust pipe)1,592 mm
Wheelbase / Track GaugeNot published
Ground ClearanceNot published

Performance

Travel SpeedNot documented for this exact engine configuration — verify with dealer
GradeabilityNot published
Low Idling Speed700 — 900 rpm; 750 — 850 rpm; 1,150 — 1,250 rpm (varies by configuration/series)
Minimum Fuel Consumption Ratio (At rated flywheel horsepower)205 g/kW•h (153 g/HP•h) (Net); 211 g/kW•h (157 g/HP•h) (Net, 50 Hz); 215 g/kW•h (160 g/HP•h) (Net, 60 Hz)
Torque3,730 N•m @ 1,400 rpm; 4,090 N•m @ 1,300 rpm; 4,170 N•m @ 1,500 rpm; 3,820 N•m @ 1,250 rpm (varies by configuration/series)

Service capacities (summary)

Lubricating Oil Amount (Refill Capacity)80 L (92 US gal); 88 L (95 US gal); 102 L (95 US gal) (varies by configuration/series)
Cooling SystemNot documented in available sources for this engine/truck combination - verify with your dealer or the 330M OMM for the confirmed serial range.
Fuel TankNot documented in available sources for this specific 330M engine grouping - varies by configuration/series. Verify against the 330M OMM for the confirmed serial range.
Hydraulic SystemNot documented in available sources for this specific 330M engine grouping - varies by configuration/series. Verify against the 330M OMM for the confirmed serial range.

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

SA12V140-1S-A(S/N 10001-UP) fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter)88-132 L (23-35 US gal) total system volume; 80-120 L (21-32 US gal) refill capacityKomatsu Genuine EO diesel engine oil. EO10W30-LA / EO15W40-LA for emissions-controlled builds; EO10W30-DH / EO15W40-DH for earlier builds. Grade selected by ambient temperature per the OMM viscosity chart.
Cooling systemNot documented in available sources for this engine/truck combination - verify with your dealer or the 330M OMM for the confirmed serial range.Komatsu Super Coolant (AF-NAC or AF-ACL type), pre-mixed ethylene-glycol coolant with corrosion inhibitors, rated for cold-climate protection to roughly -36 degC (-33 degF). Concentration adjusted by climate per the OMM coolant chart.
Fuel tankNot documented in available sources for this specific 330M engine grouping - varies by configuration/series. Verify against the 330M OMM for the confirmed serial range.Ultra-low-sulfur diesel fuel meeting the SA12V140Z-1 engine's fuel specification; use winter-grade blend in cold climates per the OMM.
Transmission/powertrain compartmentsNot documented in available sources for this specific 330M engine grouping - verify against the 330M OMM for the confirmed serial range.Komatsu Genuine TO powertrain oil. TO10 (SAE 10W, API CD) for cold-climate service, TO30 (SAE 30W, API CD) for standard/warm-climate service.
Final drives (each)Not documented in available sources for this specific 330M engine grouping - varies by configuration/series. Verify against the 330M OMM for the confirmed serial range.Komatsu Genuine AXO axle/final-drive oil (AXO46 or AXO80, SAE 80W, API GL-4), grade selected by ambient temperature per the OMM chart.
Hydraulic system AND tankNot documented in available sources for this specific 330M engine grouping - varies by configuration/series. Verify against the 330M OMM for the confirmed serial range.Komatsu Genuine HO hydraulic oil. HO46-HM (ISO VG46) for standard/warm climates, HO56-HE (ISO VG56, SAE 5W-30 equivalent) for cold-climate service.
Grease (spec only)Spec only - no fill quantity applies.Komatsu Genuine G2-LI multipurpose lithium EP grease, used across pins, bushings and chassis grease points.

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

Komatsu SA12V140-1S-A(S/N 10001-UP) maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level on the dipstick and top up with Komatsu EO engine oil before start-up
  • Check coolant level in the sight glass and inspect for leaks around the SA12V140-1 block, radiator, and hoses
  • Drain water and sediment from the fuel tank sumps and check the fuel/water separator
  • Walk-around the frame, dump body hoist cylinders, and body pins looking for oil weeping or loose fasteners
  • Check tire condition and inflation on all 27.00-49 positions and inspect rims for cracks
  • Test service brakes, park brake, and horn/backup alarm before moving the truck
Every 250 h
  • Change engine oil and oil filter using the specified Komatsu EO viscosity grade for ambient conditions
  • Grease all chassis, hoist, and articulation points with G2-LI grease per the lube chart
  • Service the engine air cleaner and check restriction indicator
  • Check powertrain (transmission/torque converter) oil level and top up with TO10 or TO30 as specified
  • Inspect brake cooling oil level and wet-disc brake wear indicators
  • Check wheel-rim nut torque and axle housing oil level
Every 500 h
  • Replace primary and secondary fuel filters
  • Pull oil samples from engine, powertrain, and axle housings for fluid analysis before servicing
  • Replace hydraulic oil filter elements and inspect the hydraulic tank breather
  • Inspect the driveline U-joints, transmission mounts, and torque converter housing for leaks
  • Check frame rails and dump body hinge structure for cracking, especially near the hoist mounts
  • Torque-check dump body hoist cylinder pins and steering linkage fasteners
Every 1,000 h
  • Change powertrain oil (TO10/TO30) and clean the transmission/torque converter suction screen
  • Check and adjust engine valve lash on the SA12V140-1 (mechanical jerk-pump engine, no electronic control)
  • Inspect the turbocharger and aftercooler for oil seepage, boost leaks, and mounting security
  • Check front and rear axle/differential oil level and condition, top up with AXO46 or AXO80
  • Replace air cleaner primary and secondary elements
  • Inspect the injection pump drive and fuel linkage for wear and correct travel
Every 2,000 h
  • Change hydraulic oil (HO46-HM or HO56-HE) and clean or replace the hydraulic tank strainer
  • Change front and rear axle/final drive oil and inspect final drive planetary sets for metal in the drain
  • Drain, flush, and refill engine coolant with Super Coolant AF-NAC or AF-ACL per the corrosion-inhibitor schedule
  • Inspect wet-disc brake packs, calipers, and cooling oil circuit for wear beyond service limits
  • Check steering cylinder, drag link, and kingpin wear
  • Inspect frame, dump body, and hoist cylinder mounts with dye penetrant or visual crack check
Every 6,000 h
  • Evaluate the SA12V140-1 for a top-end or in-frame overhaul based on oil consumption, blow-by, and compression trends
  • Pull the torque converter and transmission for internal inspection or rebuild of clutch packs and bearings
  • Overhaul wet-disc brake assemblies and replace brake cooling oil circuit components as needed
  • Rebuild or replace front/rear axle housings, differentials, and final drive gearing as wear dictates
  • Inspect and, if required, rebuild the steering system pump, cylinders, and linkage
  • Have the frame and dump body structure inspected by a qualified welder and repaired before returning to service

Servicing the SA12V140-1S-A(S/N 10001-UP) beyond the schedule

Predictive Maintenance & Fluid Analysis

With no ECM or fault codes on the SA12V140-1S-A, condition monitoring runs on oil sampling, coolant testing, and gauge trends. Pull scheduled samples from the engine, torque converter, and axle housings for fluid analysis before servicing. Monitor coolant pH, SCA concentration, and glycol content to prevent corrosion in the 30.5-liter cooling system. Track engine oil wear metals (iron, copper, lead, aluminum) and contaminants (silicon, sodium) to detect early piston ring or bearing wear. Use Komatsu KOWA laboratory-grade analysis to track hydraulic fluid particle count and viscosity changes. Analyze powertrain oil for oxidation and fuel dilution to protect the torque converter and powershift transmission clutch packs.

Corrective & Common Repairs

The SA12V140-1S-A uses a mechanical jerk-pump fuel injection system with no electronic controller, making fuel system diagnostics reliant on visual inspection and gauge readings. Common repairs include replacing primary and secondary fuel filters to prevent waxing and clogging in cold climates. Inspect the injection pump drive and fuel linkage for wear and correct travel during 1,000-hour services. Check the turbocharger and aftercooler for oil seepage and boost leaks. Address wet-disc brake pack wear by inspecting calipers and cooling oil circuits. Replace worn driveline U-joints and transmission mounts to prevent vibration damage to the torque converter housing and final drive gears.

Overhaul & Rebuild Points

Evaluate the SA12V140-1S-A for a top-end or in-frame overhaul at 6,000 hours based on oil consumption, blow-by, and compression trends. Pull the torque converter and transmission for internal inspection or rebuild of clutch packs and bearings. Overhaul wet-disc brake assemblies and replace brake cooling oil circuit components as needed. Rebuild or replace front/rear axle housings, differentials, and final drive gearing as wear dictates. Inspect and, if required, rebuild the steering system pump, cylinders, and linkage. Have the frame and dump body structure inspected by a qualified welder and repaired before returning to service to prevent catastrophic structural failure.

Seasonal & Environment Servicing

In cold climates, use the correct Komatsu EO viscosity grade and verify coolant protection with Super Coolant AF-NAC or AF-ACL ahead of winter. The SA12V140-1S-A mechanical injection system is sensitive to fuel waxing and cold-start fuel quality; use winter-grade blend per the OMM. Select Komatsu TO powertrain oil grade (TO10 for cold, TO30 for warm) and AXO axle oil (AXO46 for cold, AXO80 for warm) based on ambient temperature. Check tire condition and inflation on all 27.00-49 positions regularly, as temperature changes affect pressure. Inspect the hydraulic tank breather and replace hydraulic oil (HO46-HM for warm, HO56-HE for cold) to maintain viscosity and prevent component damage.

SA12V140-1S-A(S/N 10001-UP) common service parts

Part numberPart
07000-02080O-Ring,Hydraulic Oil FilterCheck fitment →
6215-51-5690Grommet,Oil FilterCheck fitment →
600-211-1100Oil Filter Sub ACheck fitment →
600-211-1101Oil Filter Sub ACheck fitment →
600-211-1230Cartridge,Oil FilterCheck fitment →

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

SA12V140-1S-A(S/N 10001-UP) fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
E10Engine controller power failure or engine control drive system circuit malfunction.Loss of power to the Electronic Control Module (ECM), blown fuses, or open ground circuit.Inspect ECM power connections, main fuses, and ground wires for continuity and corrosion.
E11Engine control system failure; output power reduced to protect the engine.Critical sensor failure (coolant temp, oil pressure) or internal ECM fault triggering derate.Check coolant temperature, engine oil pressure, and air filter status; verify sensor readings.
CA115Engine speed sensor and backup speed sensor failure.Faulty crankshaft speed sensor, broken wiring harness, or corroded connector pins.Replace the speed sensor and verify voltage at the pin connector.
CA111Engine controller internal fault (ECM critical internal failure).Internal failure of the Electronic Control Module.Replace or reprogram the ECM.
CA234Engine overspeed.Throttle calibration error, engine load cycle issue, or operator misuse.Verify throttle calibration and engine load cycle.
CA441Battery voltage too low.Weak battery, failing alternator, or loose connections.Replace the alternator or battery; check the voltage regulator.
CA442Battery voltage too high.Alternator overcharging or voltage regulator failure.Replace the alternator or battery; check the voltage regulator.
AA10NXAir cleaner clogging.Restricted or dirty air filter element.Replace the air filter.
A570NXEngine oil filter clogging.Blocked engine oil filter element.Replace the engine oil filter element.
B@BCNSEngine coolant overheating.Low coolant level, blocked radiator fins, or failed fan belt.Check radiator fins, fan belt, and coolant level.

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

SA12V140-1S-A(S/N 10001-UP) attachments & work tools

Wheel Loader Attachments

The SA12V140-1 engine powers the WA800-2 and WA900-1 wheel loader series. Factory specifications list the WA800-2 for serial 10001-Up and the WA900-1 for serial 10001-Up as primary applications. Bucket capacities and mounting systems vary by configuration and series within these model lines.

Rigid Hauler Attachments

The SA12V140Z-1 variant powers the 330M rigid haul truck, a mechanical-drive unit from the Dresser/Komatsu Haulpak lineage. This machine is built for large-scale mining and quarry hauling in the roughly 300,000+ lb (136+ metric ton) GVW class. The 330M uses 27.00-49 tires and a mechanical driveline with axle final drives.

Dozer Applications

The SA12V140-1 engine is applicable to the D475A-2 bulldozer, specifically for serial 10201-Up. Factory spec sheets identify the D475A-2 as a large mining dozer exceeding 250,000 lbs in operating weight. Blade capacities for this class range from 2.5 cubic yards to over 60 cubic yards, depending on the specific configuration.

Generator Set Applications

The SA12V140-1 and SA12V140Z-1 engines are used in stationary continuous power generators such as the EGS1200, EGS1050, and EGS1000 series. The DCA-800SSK is also listed as a generator application for this engine family. These units utilize the engine's flywheel horsepower for power generation.

Hydraulic and Mounting Notes

The SA12V140-1 engine features a BOSCH PE-P (PS7S) type or ZEXEL electronic control type fuel injection pump. Hydraulic kit arrangements for attached work tools depend on the specific machine model (WA800-2, WA900-1, or 330M) rather than the engine alone. Factory guarding options and exhaust configurations vary by the host machine's design.

All SA12V140-1S-A(S/N 10001-UP) assemblies by section

Every catalogued assembly group for the Komatsu SA12V140-1S-A(S/N 10001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Engine
Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : After Cooler Water Piping (Cold Terrain Spec.) (For Electrical Governor)(#12378-)
01***20Bolt,(For Mono Lever Steering)4
01***25Bolt,(For Canvas Canopy?Head Guard)9
01***40Bolt (Op)7
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : After Cooler Water Piping (Cold Terrain Spec.)(#12378-)
01***20Bolt,(For Mono Lever Steering)4
01***25Bolt,(For Canvas Canopy?Head Guard)9
01***40Bolt (Op)7
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : After Cooler Water Piping (For Electrical Governor)(#11972-)
01***20Bolt,(For Mono Lever Steering)4
01***25Bolt,(For Canvas Canopy?Head Guard)9
01***40Bolt (Op)7
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : After Cooler Water Piping(#11640-)
01***20Bolt,(For Mono Lever Steering)4
01***25Bolt,(For Canvas Canopy?Head Guard)9
01***40Bolt (Op)7
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Cleaner(#11640-12363)
60***41Pre-Cleaner Assembly2
60***70Nut, Wing1
60***00Element Assembly, Outer1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Cleaner(#12364-)
60***41Pre-Cleaner Assembly2
60***70Nut, Wing1
60***01Element Ass'Y,Outer1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Compressor (Front) (Inner Parts)(#10001-13302)
62***01Air Compressor A.,(See Fig.A7010-D7a3)1
DK***40Gasket,Air Compressor1
DK***40Gasket,Air Compressor1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Compressor (Front) (Inner Parts)(#13303-)
62***01Air Compressor A.,(See Fig.A7010-D7a3)1
DK***40Gasket,Air Compressor1
DK***40Gasket,Air Compressor1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Compressor (Rear) (Inner Parts)(#10001-13302)
62***01Air Compressor A.,(See Fig.A7010-E7a3)1
DK***40Gasket,Air Compressor1
DK***40Gasket,Air Compressor1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Compressor (Rear) (Inner Parts)(#13303-)
62***01Air Compressor A.,(See Fig.A7010-E7a3)1
DK***40Gasket,Air Compressor1
DK***40Gasket,Air Compressor1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Compressor And Mounting(#10001-13302)
01***35Bolt, Mount Ground Driven Steering Pump2
01***45Bolt, Mounting Cranking Motor2
01***95Capscrew - M123
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Compressor And Mounting(#13303-)
01***35Bolt, Mount Ground Driven Steering Pump2
01***45Bolt, Mounting Cranking Motor2
01***95Capscrew - M123
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Compressor Gasket Kit(#11755-)
07***00O-Ring (K8)2
07***00O-Ring,(For Dual Water Pump)2
07***19Gasket,(For Hd325-6) (See Fig.A7010)11
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Compressor Piping (1/2)(#10001-13302)
01***35Bolt,(For Fix Position)1
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***50Bolt,(Spark Arrester Spec.)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Compressor Piping (1/2)(#13303-)
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***50Bolt,(Spark Arrester Spec.)1
01***55Bolt,(See Service News)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Compressor Piping (2/2)(#10001-13302)
01***45Screw1
01***50Bolt,For Weight Adjusting Bolt1
01***35Bolt1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Compressor Piping (2/2)(#13303-)
01***50Bolt,For Weight Adjusting Bolt1
01***35Bolt1
01***32Washer,(Not Used With Emergency Str.)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Intake Manifold And After Cooler (1/2) (L.H. Bank) (Cold Terrain Spec.) (For Electricalgavernor)(#12378-)
01***00Bolt,(For Front Brake Release)7
01***10Bolt,(With Joy Stick Steering)5
01***60Bolt12
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Intake Manifold And After Cooler (1/2) (L.H. Bank) (Cold Terrain Spec.)(#12378-)
01***00Bolt,(For Front Brake Release)7
01***10Bolt,(With Joy Stick Steering)5
01***60Bolt12
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Intake Manifold And After Cooler (1/2) (L.H. Bank) (For Electrical Governor)(#11972-)
01***00Bolt,(For Front Brake Release)7
01***10Bolt,(With Joy Stick Steering)5
01***60Bolt12
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Intake Manifold And After Cooler (1/2) (L.H. Bank)(#11640-)
01***00Bolt,(For Front Brake Release)7
01***10Bolt,(With Joy Stick Steering)5
01***60Bolt12
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Intake Manifold And After Cooler (2/2) (R.H. Bank) (Cold Terrain Spec.) (For Electricalgovernor)(#12378-)
01***00Bolt,(For Front Brake Release)6
01***10Bolt,(With Joy Stick Steering)4
01***20Capscrew2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Intake Manifold And After Cooler (2/2) (R.H. Bank) (Cold Terrain Spec.)(#12378-)
01***00Bolt,(For Front Brake Release)8
01***10Bolt,(With Joy Stick Steering)4
01***60Bolt9
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Intake Manifold And After Cooler (2/2) (R.H. Bank) (For Electrical Governor)(#11972-)
01***00Bolt,(For Front Brake Release)6
01***10Bolt,(With Joy Stick Steering)4
01***20Capscrew2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Intake Manifold And After Cooler (2/2) (R.H. Bank)(#11640-)
01***00Bolt,(For Front Brake Release)8
01***10Bolt,(With Joy Stick Steering)4
01***60Bolt9
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Vent (Without Corro.Rstr.)(#13460-)
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***10Bolt,(With Joy Stick Steering)1
01***30Capscrew (1)8
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Vent(#10779-11669)
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***10Bolt,(With Joy Stick Steering)1
01***30Capscrew (1)8
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Vent(#11670-11730)
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***10Bolt,(With Joy Stick Steering)1
01***30Capscrew (1)8
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Vent(#11731-11882)
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***10Bolt,(With Joy Stick Steering)1
01***30Capscrew (1)8
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Vent(#11883-12103)
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***10Bolt,(With Joy Stick Steering)1
01***30Capscrew (1)8
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Air Vent(#12104-)
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***10Bolt,(With Joy Stick Steering)1
01***30Capscrew (1)8
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Alternator (75a) (Inner Parts)
60***30Alternator A. (75a)1
SD***X0Coil Assembly1
SD***X0Washer1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Alternator (90a) (Inner Parts)(#11745-12102)
60***30Alternator A. (90a),(See Fig.A6010-B7a5)1
KD***02Bolt4
KD***02Washer,Spring5
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Alternator (90a) (Inner Parts)(#12103-)
60***30Alternator A. (90a)1
KD***02Bolt4
KD***02Washer,Spring5
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Alternator Drive (For 90a Alternator)(#10001-12102)
01***16Bolt - Seat And Tether Belt Mounting6
01***30Bolt,(Not Used When Towing Winch)2
01***90Bolt,For Weight Adjusting Bolt1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Alternator Drive (For 90a Alternator)(#12103-)
01***16Bolt - Seat And Tether Belt Mounting6
01***30Bolt,(Not Used When Towing Winch)2
01***90Bolt,For Weight Adjusting Bolt1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Alternator Drive(#10034-)
01***16Bolt - Seat And Tether Belt Mounting6
01***30Bolt,(Not Used When Towing Winch)2
01***90Bolt,For Weight Adjusting Bolt1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Alternator Mounting (75a)
01***25Bolt,(For Canvas Canopy?Head Guard)10
01***30Bolt,(With Body Positioner)6
01***20Bolt,For Weight Adjusting Bolt1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Alternator Mounting (90a)(#10001-12102)
01***25Bolt,(For Canvas Canopy?Head Guard)6
01***30Bolt,(With Body Positioner)6
01***55Bolt - Mount Cage To Transmission Case1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Alternator Mounting (90a)(#12103-)
01***25Bolt,(For Canvas Canopy?Head Guard)6
01***30Bolt,(With Body Positioner)6
01***55Bolt - Mount Cage To Transmission Case1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Alternator Related Parts(#13090-)
62***50Pin1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Breather And Front Seal (Without Air Compressor)(#11859-)
01***25Bolt,(For Canvas Canopy?Head Guard)3
01***30Bolt,(With Body Positioner)1
01***40Bolt (Op)4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Breather And Front Seal(#11859-)
01***25Bolt,(For Canvas Canopy?Head Guard)3
01***30Bolt,(With Body Positioner)1
01***40Bolt (Op)4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Breather(#11640-11858)
01***30Bolt,(With Body Positioner)1
01***40Bolt (Op)4
01***20Bolt,(Without Rops Guard? Canopy)3
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Bypass Filter (Chassis Mount)(#11640-12377)
01***20Bolt,(For Mono Lever Steering)1
01***95Capscrew3
01***25Capscrew3
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Bypass Filter Bracket(#12378-)
01***20Bolt,(For Mono Lever Steering)1
01***95Capscrew3
01***25Capscrew3
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Bypass Filter(#12378-)
60***11Filter, By-Pass (Spin-On) (1)2
62***01Filter Ass'Y,Bypass1
62***10Head1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Bypass Oil Piping(#11640-12377)
01***30Bolt,(With Body Positioner)1
01***85Bolt, Divider Valve Mounting2
07***23O-Ring,Plug1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Bypass Oil Piping(#12378-)
01***30Bolt,(With Body Positioner)1
01***85Bolt, Divider Valve Mounting2
07***23O-Ring,Plug1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Camfollower Cover
01***20Bolt,(For Japan Pc200)70
07***12Gasket,(Without Air Compressor Type) (K2)48
62***10Cover12
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Camfollower(#11893-)
04***12Ring, Retaining48
61***20Ball1
62***00Lever, Cam Follower24
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Camshaft And Camfollower(#10779-11892)
01***20Bolt (M12-1.75x20)4
04***25Key, Plain Woodruff1
04***12Ring, Retaining48
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Camshaft(#11893-)
01***20Bolt (M12-1.75x20)4
04***25Key, Plain Woodruff1
62***20Gear, Camshaft (Left Hand)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Cooling Fan
01***60Bolt,For Weight Adjusting Bolt6
01***32Washer,(Not Used With Emergency Str.)6
60***00Fan,Cooling1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Cooling Fan (Todaka)(#13366-)
01***60Bolt,For Weight Adjusting Bolt6
01***32Washer,(Not Used With Emergency Str.)6
60***30Fan,Cooling1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Corrosion Resistor
01***35Bolt,(F4320-52a0 -5 )2
07***06O-Ring,Corrosion Resistor1
07***14O-Ring,(F4350-63a1a-2 )1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Crank Pulley (Pulley Diameter 182mm)
04***24Pin,Dowel (For No.3 Housing)1
61***20Bolt (M22-1.50x135)6
61***21Bolt6
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Crankshaft
04***28Key, Plain Woodruff1
62***00Main Metal Ass'Y1
62***01Main Metal Ass'Y1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Cylinder Block Cover(#11640-11858)
01***25Bolt,(Without Rops Guard? Canopy)26
62***10Cover, Water Header3
62***81Gasket, Water Header Cover3
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Cylinder Block Gasket Kit(#11640-)
07***12O-Ring, Between Valve And Pump1
07***15O-Ring,(Without Boom Kickout)2
07***21O-Ring,Water Piping2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Cylinder Block Related Parts(#11859-)
01***25Bolt,(Without Rops Guard? Canopy)26
08***05Switch,Engine Oil Pressure1
62***10Cover, Water Header3
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Cylinder Block(#11640-11858)
01***20Bolt12
01***25Screw12
01***16Washer,(With Water Separator)12
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Cylinder Block(#11859-)
01***25Screw12
01***16Washer,(With Water Separator)12
01***60Washer,(Without Rops Guard? Canopy)14
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Cylinder Head Gasket Kit(#11640-)
02***75O-Ring,(See Fig.A1310)8
07***21O-Ring,Water Piping24
07***25O-Ring,Corrosion Resistor5
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Cylinder Head(#11023-11882)
01***16Bolt,(For Shipping)12
01***20Bolt (M10-1.75x120)12
04***20Pin,Dowel (Welded)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Cylinder Head(#11883-)
01***16Bolt,(For Shipping)12
01***20Bolt (M10-1.75x120)12
04***20Pin,Dowel (Welded)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Damper
01***35Bolt, Mount Ground Driven Steering Pump12
01***32Washer,(Not Used With Emergency Str.)12
04***24Pin,Dowel (For No.3 Housing)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Electrical Wiring (For Electrical Governor) (For Ec Regulation)(#12000-)
01***25Bolt,(Without Rops Guard? Canopy)4
01***16Bolt, Mount Solenoid Valve8
01***16Bolt - Starting Motor Ground Cable4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Electrical Wiring (For Electrical Governor) (Harness Heavy Duty Type)(#11640-11999)
01***25Bolt,(Without Rops Guard? Canopy)4
01***16Bolt, Mount Solenoid Valve8
01***16Bolt - Starting Motor Ground Cable20
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Engine Support And Bracket(#11640-)
01***55Bolt, Strut Mounting - To Radiator And Rear Frame12
01***55Capscrew12
01***60Flat Washer - M20 (Hardened)12
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Exhaust Manifold(#11640-)
01***95Bolt48
61***50Stud, Mounting4
62***81Gasket, Exhaust Manifold12
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fan Drive
01***35Bolt2
01***40Bolt,For Weight Adjusting Bolt14
04***15Holder1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fan Pulley
01***35Bolt, Mount Ground Driven Steering Pump6
62***90V-Belt Set1
62***90V-Belt Set1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Flywheel
01***80Bolt10
61***20Washer, Plain (M20)10
62***00Flywheel Ass'Y1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Flywheel Housing (For Mechanical Governor)(#10036-)
01***30Screw3
01***65Bolt,L.H14
01***30Bolt, Tank Mounting3
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Flywheel Housing(#10034-)
01***30Screw3
01***65Bolt,L.H14
01***30Bolt, Tank Mounting3
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Front Cover(#11640-11858)
01***25Bolt,(For Canvas Canopy?Head Guard)3
01***20Bolt,(Without Rops Guard? Canopy)1
01***75Bolt - Tube Mounting7
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Front Cover(#11859-)
01***75Bolt - Tube Mounting7
01***90Bolt,For Weight Adjusting Bolt3
01***30Bolt,For Weight Adjusting Bolt9
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Front Hanger (Without Fan Drive)
01***40Bolt,For Weight Adjusting Bolt6
62***60Plate,Hanger1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Controller (Forwarded Individually Parts)(#11911-11999)
78***01Controller1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Controller (Forwarded Individually Parts)(#12000-)
78***00Controller1
78***01Controller1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Controller(#13090-)
78***01Controller1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Filter And Piping (1/2) (L.H.)(#11059-)
01***35Bolt,(For Fix Position)2
01***35Bolt,(F4320-52a0 -5 )4
01***15Bolt, Fan Mounting4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Filter And Piping (2/2) (R.H.)(#11059-)
01***40Screw, Hex Socket4
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***50Bolt,(Spark Arrester Spec.)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Filter And Piping (For Electrical Governor)(#11911-11921)
01***30Bolt - M8 X 30lg2
01***45Screw1
01***20Bolt,(For Mono Lever Steering)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Filter And Piping (For Electrical Governor)(#11922-)
01***30Bolt - M8 X 30lg2
01***45Screw1
01***20Bolt,(For Mono Lever Steering)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Nozzle And Spill Pipe
01***20Capscrew12
01***10Nut,(Service Only)12
07***21O-Ring,Oil Cooler Pipe24
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Coupling) (For Electrical Governor) (Inner Parts)(#10034-)
01***25Bolt,(Without Rops Guard? Canopy)6
01***35Bolt, Mount Ground Driven Steering Pump2
65***00Coupling Ass'Y2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Coupling) (L.H.) (Inner Parts)(#11640-)
DK***00Coupling1
DK***00Bolt6
DK***00Coupling,Cross1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Coupling) (R.H.) (Inner Parts)(#11640-)
DK***00Coupling1
DK***00Bolt6
DK***00Coupling,Cross1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Coupling) (R.H.) (Todaka) (Inner Parts)(#13366-)
DK***00Coupling1
DK***00Bolt6
DK***00Coupling,Cross1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Feed Pump) (L.H.) (Inner Parts)(#11640-)
DK***90Feed Pump Ass'Y1
DK***20Bolt, Joint1
DK***00Valve,Check4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Feed Pump) (R.H.) (Inner Parts)(#11640-)
DK***90Feed Pump Ass'Y1
DK***20Bolt, Joint1
DK***00Valve,Check4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Feed Pump) (R.H.) (Todaka) (Inner Parts)(#13366-)
DK***90Feed Pump Ass'Y1
DK***20Bolt, Joint1
DK***00Valve,Check4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Governor) (L.H.) (1/2) (For Electrical Governor) (Inner Parts)(#10034-)
01***45Bolt4
01***80Bolt6
04***14Pin, Dowel1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Governor) (L.H.) (1/2) (Inner Parts)(#11640-)
DK***00Gasket1
DK***00Gear1
DK***00Shim? 2.00mm,(High Altitude Spec.)0
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Governor) (L.H.) (2/2) (For Electrical Governor) (Inner Parts)(#10034-)
01***30Bolt (Itl)1
01***80Bolt2
01***08Washer,(For 1 Attachment And Pat)8
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Governor) (L.H.) (2/2) (Inner Parts)(#11640-)
DK***80Shim? 0.5mm0
DK***40Gasket,Air Compressor4
DK***40Bolt4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Governor) (R.H.) (1/2) (For Electrical Governor) (Inner Parts)(#10034-)
01***45Bolt4
01***80Bolt6
04***14Pin, Dowel1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Governor) (R.H.) (2/2) (For Electrical Governor) (Inner Parts)(#10034-)
01***30Bolt (Itl)1
01***80Bolt2
01***08Washer,(For 1 Attachment And Pat)8
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Pump) (L.H.) (1/2) (For Electrical Governor) (Inner Parts)(#10034-)
01***12Bolt - M8 - 1.25 X 122
01***35Bolt4
01***30Bolt (Itl)6
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Pump) (L.H.) (1/2) (Inner Parts)(#11640-)
62***50Injection Pump A.,L.H1
DK***30Bearing,Roller1
DK***00Bearing,Center2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Pump) (L.H.) (2/2) (For Electrical Governor) (Inner Parts)(#10034-)
01***08Nut, Regular Hexagon (M10-1.50)12
01***32Washer,(With Auto Emergency Steering)12
65***00Valve Ass'Y6
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Pump) (L.H.) (2/2) (Inner Parts)(#11640-)
DK***00Nut12
DK***40Screw2
DK***00Shim? 0.875mm0
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Pump) (R.H.) (1/2) (For Electrical Governor) (Inner Parts)(#10034-)
01***12Bolt - M8 - 1.25 X 122
01***35Bolt4
01***30Bolt (Itl)6
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Pump) (R.H.) (1/2) (Inner Parts)(#11640-)
62***60Injection Pump Ass'Y,R.H. (See Fig.A4010-H7f3)1
DK***30Bearing,Roller1
DK***20Limiter1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Pump) (R.H.) (1/2) (Todaka) (Inner Parts)(#13366-)
62***60Injection Pump Ass'Y,R.H. (See Fig.A4010-H7f3)1
DK***30Bearing,Roller1
DK***20Limiter1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Pump) (R.H.) (2/2) (For Electrical Governor) (Inner Parts)(#10034-)
01***08Nut, Regular Hexagon (M10-1.50)12
01***32Washer,(With Auto Emergency Steering)12
65***00Valve Ass'Y6
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Pump) (R.H.) (2/2) (Inner Parts)(#11640-)
DK***00Nut12
DK***40Screw2
DK***00Shim? 0.875mm0
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump (Pump) (R.H.) (2/2) (Todaka) (Inner Parts)(#13366-)
DK***00Nut12
DK***40Screw2
DK***00Shim? 0.875mm0
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Bracket (For Electrical Governor)(#10034-12669)
01***65Bolt - Return Line And Suction Linehose Clamps4
01***95Capscrew8
62***31Pin,Dowel4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Bracket (For Electrical Governor)(#12670-)
01***70Bolt - Bracket And Oil Inlet Tubemounting4
01***95Capscrew8
01***32Washer,(With Auto Emergency Steering)12
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Bracket(#10001-12669)
01***65Bolt - Return Line And Suction Linehose Clamps4
01***95Capscrew8
62***31Pin,Dowel4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Bracket(#12670-)
01***70Bolt - Bracket And Oil Inlet Tubemounting4
01***95Capscrew8
01***32Washer,(With Auto Emergency Steering)12
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Drive (With Air Compressor)
01***30Bolt,(Not Used When Towing Winch)8
01***20Bolt, Mount Spool Covers6
01***13Nut, Regular Hexagon (M22-1.25)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Drive(#11042-)
01***30Bolt,(Not Used When Towing Winch)8
01***20Bolt, Mount Spool Covers6
01***13Nut, Regular Hexagon (M22-1.25)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Linkage (Todaka)(#13366-)
01***20Bolt,(For Mono Lever Steering)1
01***03Nut? L.H. Thread,L.H. Thread1
01***05Nut (Welded)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Linkage(#11640-)
01***20Bolt,(For Mono Lever Steering)1
01***03Nut? L.H. Thread,L.H. Thread1
01***05Nut (Welded)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Lubricating (1/2) (L.H. Bank)
07***12Gasket,(Without Air Compressor Type) (K1)2
07***14Screw, Banjo Connector (M10)1
61***20Nipple1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Lubricating (1/2) (L.H. Bank) (For Electrical Governor)(#10034-)
07***12Gasket,(Without Air Compressor Type) (K2)4
07***12Gasket,(Without Air Compressor Type) (K1)2
07***10Screw, Banjo Connector (M10-1.25x20)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Lubricating (2/2) (R.H. Bank)
07***12Gasket,(Without Air Compressor Type) (K2)2
07***12Gasket,(Without Air Compressor Type) (K1)2
07***10Screw, Banjo Connector (M10-1.25x20)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Lubricating (2/2) (R.H. Bank) (For Electrical Governor)(#10034-)
07***12Gasket,(Without Air Compressor Type) (K2)2
07***12Gasket,(Without Air Compressor Type) (K1)2
07***10Screw, Banjo Connector (M10-1.25x20)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Mounting (For Electrical Governor)(#10034-)
01***00Bolt8
01***32Washer, (Without Emergency Steering)8
07***08Plug,(Without Lock-Up), Plug2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Mounting (Todaka)(#13366-)
01***90Bolt,(For No?1 And No?3 Housing)8
01***32Washer, (Without Emergency Steering)8
07***12Gasket,(Without Air Compressor Type) (K2)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Mounting(#11640-)
01***90Bolt,(For No?1 And No?3 Housing)8
01***32Washer, (Without Emergency Steering)8
07***12Gasket,(Without Air Compressor Type) (K2)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Piping (1/2) (L.H. Bank) (For Electrical Governor)(#10034-)
01***30Screw7
01***35Bolt6
01***20Bolt,(For Mono Lever Steering)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Piping (1/2) (L.H. Bank) (For Electrical Governor)(#10034-12978)
01***25Capscrew7
01***30Screw7
01***35Bolt4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Piping (1/2) (L.H. Bank)(#11062-)
01***25Capscrew7
01***30Screw7
01***35Bolt4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Piping (2/2) (R.H. Bank) (For Electrical Governor)(#10034-)
01***30Screw7
01***35Bolt4
01***20Bolt,(For Mono Lever Steering)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Piping (2/2) (R.H. Bank) (For Electrical Governor)(#10047-12978)
01***25Capscrew7
01***30Screw7
01***35Bolt4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Injection Pump Piping (2/2) (R.H. Bank)(#11062-)
Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Piping (L.H. Bank) (For Electrical Governor)(#11911-11921)
01***25Bolt,(Rear Attachment Less)2
01***25Screw2
01***25Screw2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Piping (L.H. Bank) (For Electrical Governor)(#11922-)
01***25Bolt,(Rear Attachment Less)2
01***20Bolt2
01***25Screw2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Piping (R.H. Bank) (For Electrical Governor)(#11911-11921)
01***20Bolt, Wiring Harness Mounting Bracket2
01***95Bolt1
01***20Bolt2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Piping (R.H. Bank) (For Electrical Governor)(#11922-)
01***20Bolt, Wiring Harness Mounting Bracket2
01***95Bolt1
01***20Bolt2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Return (L.H. Bank) (For Electrical Governor)(#11640-11999)
04***10Clip1
07***12Gasket,Mechanical Pump Piping3
07***12Gasket,(Without Air Compressor Type) (K1)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Return (L.H. Bank) (For Electrical Governor)(#12000-)
01***30Screw2
01***25Bolt,(Rear Attachment Less)1
01***20Bolt,(For Mono Lever Steering)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Return (L.H. Bank)(#11640-)
01***25Bolt1
07***12Gasket,Mechanical Pump Piping3
07***08Plug,(Without Oil Pressure Switch)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Return (R.H. Bank) (For Electrical Governor)(#11640-11999)
04***10Clip1
07***12Gasket,Mechanical Pump Piping3
07***12Gasket,(Without Air Compressor Type) (K1)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Return (R.H. Bank) (For Electrical Governor)(#12000-)
01***25Bolt,(Rear Attachment Less)1
01***20Bolt,(For Mono Lever Steering)1
01***23Washer, Wiring Harness Mounting Bracket1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Fuel Return (R.H. Bank)(#11640-)
01***25Bolt1
07***12Gasket,Mechanical Pump Piping3
07***08Plug,(Without Oil Pressure Switch)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Gear Case (Without Air Compressor)(#11859-)
01***20Bolt,(Without Rops Guard? Canopy)4
01***30Bolt,(Not Used When Towing Winch)13
07***08Plug,(Without Lock-Up), Plug4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Gear Case(#11640-11858)
01***20Bolt,(Without Rops Guard? Canopy)4
01***30Bolt,(Not Used When Towing Winch)13
07***08Plug,(Without Lock-Up), Plug4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Gear Case(#11859-)
01***30Bolt,(Not Used When Towing Winch)13
07***08Plug,(Without Lock-Up), Plug4
07***16Plug, Expansion9
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Head Cover And Shield Plate(#10779-11858)
01***55Screw36
62***11Cover,Rocker Arm Housing12
62***20Gasket, Rocker Lever Housing12
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Head Cover(#11859-)
01***55Screw36
62***11Cover,Rocker Arm Housing12
62***20Gasket, Rocker Lever Housing12
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Heat Shield (For Wa800.900? D475a And Hd785.985)
01***35Capscrew8
01***40Capscrew8
01***32Washer,(With Auto Emergency Steering)8
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Heater Switch (1/2) (L.H. Bank)
01***12Bolt,(With Speedometer)2
01***16Bolt - Starting Motor Ground Cable5
01***30Bolt - Lower Oil Cooler Outlet Tubemounting4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Heater Switch (2/2) (R.H. Bank)
01***12Bolt,(With Speedometer)2
01***16Bolt - Starting Motor Ground Cable5
01***30Bolt - Lower Oil Cooler Outlet Tubemounting4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Idler Gear(#10909-)
01***40Bolt (Op)12
01***80Bolt,For Weight Adjusting Bolt2
01***10Bolt,For Weight Adjusting Bolt4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Muffler Piping(#11640-11831)
01***45Capscrew10
01***50Bolt12
62***80Connector2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Muffler Piping(#11832-)
01***45Capscrew10
01***50Bolt12
62***80Connector2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Muffler(#11640-11831)
01***20Bolt,(For Mono Lever Steering)1
01***30Bolt,(With Body Positioner)5
01***35Bolt,(F4320-52a0 -5 )4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Muffler(#11832-)
01***30Bolt,(With Body Positioner)5
01***35Bolt,(F4320-52a0 -5 )4
01***45Bolt,(With Water Separator Type)7
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Name Plate And Caution (Japanese-English)
04***60Screw, Serial Number Plate4
09***12Plate? Name,(Limited Supply)1
60***40Plate? Name,(Limited Supply)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Nozzle Holder (Inner Parts)(#10787-)
62***12Holder Ass'Y,(See Fig.A4210-B7a4)12
DK***00Shim? 0.725mm0
DK***00Shim? 0.525mm0
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Adapter
01***12Bolt - M8 - 1.25 X 123
01***65Bolt - Return Line And Suction Linehose Clamps1
01***80Bolt,(With Corrosion Resistor)6
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Adapter (Cold Terrain Spec.)(#12378-)
01***12Bolt - M8 - 1.25 X 123
01***65Bolt - Return Line And Suction Linehose Clamps1
01***80Bolt,(With Corrosion Resistor)6
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Cooler (With Block Heater)(#12319-)
01***30Bolt,(With Body Positioner)24
01***65Bolt - Return Line And Suction Linehose Clamps2
01***16Bolt - Starting Motor Ground Cable1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Cooler Mounting(#11893-)
01***75Bolt (M10-1.50x75)4
07***40O-Ring,Cooling Valve1
07***40O-Ring,(For Hd325-6?Hm400-1) (A3110)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Cooler(#10001-11892)
01***30Bolt,(With Body Positioner)24
01***65Bolt - Return Line And Suction Linehose Clamps2
01***75Bolt (M10-1.50x75)4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Cooler(#11893-)
01***30Bolt,(With Body Positioner)24
01***65Bolt - Return Line And Suction Linehose Clamps2
07***16O-Ring (K2)8
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Filler
01***20Bolt,(For Mono Lever Steering)4
07***38O-Ring,(For Slag Handling)1
07***38Seal, O-Ring1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Filter
01***20Bolt,(For Mono Lever Steering)3
01***25Bolt,(For Canvas Canopy?Head Guard)10
01***30Bolt,(With Body Positioner)7
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Filter (Cold Terrain Spec.)(#12378-)
01***25Bolt,(For Canvas Canopy?Head Guard)6
01***30Bolt,(With Body Positioner)7
01***30Bolt - Lower Oil Cooler Outlet Tubemounting13
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Level Gauge (Cold Terrain Spec.)(#12378-)
01***20Bolt,(For Mono Lever Steering)1
01***32Washer,(With Auto Emergency Steering)1
04***10Clip1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Level Gauge(#11640-11971)
01***16Bolt - Starting Motor Ground Cable1
07***12O-Ring,(Extreme Cold Terrain Spec.) (K2)1
07***27Nut, Tube1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Level Gauge(#11972-)
01***20Bolt,(For Mono Lever Steering)1
01***32Washer,(With Auto Emergency Steering)1
04***10Clip1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Pan And Suction Tube (Cold Terrain Spec.)(#12378-)
01***20Bolt,(For Mono Lever Steering)2
01***25Bolt,(For Canvas Canopy?Head Guard)27
01***30Bolt,(With Body Positioner)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Pan And Suction Tube(#11640-11971)
01***20Bolt,(For Mono Lever Steering)2
01***25Bolt,(For Canvas Canopy?Head Guard)24
01***30Bolt,(With Body Positioner)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Pan And Suction Tube(#11972-)
01***20Bolt,(For Mono Lever Steering)2
01***25Bolt,(For Canvas Canopy?Head Guard)24
01***30Bolt,(With Body Positioner)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Oil Pump(#10909-)
01***30Bolt,(With Body Positioner)2
01***55Bolt,(See Service News)1
01***20Bolt,(Forwarded Individually Parts)5
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Piston(#10909-)
02***13Pin, Dowel2
04***20Ring, Retaining24
62***33Piston Ring Ass'Y,Per Cylinder12
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Rocker Arm And Housing(#10779-11892)
01***85Bolt (M10-1.50x85)2
01***80Bolt (M12-2.00x80)12
01***80Bolt (M10-1.50x80)34
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Rocker Arm And Housing(#11893-)
01***85Bolt (M10-1.50x85)2
01***80Bolt (M12-2.00x80)12
01***80Bolt (M10-1.50x80)34
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Safety Guard (Injection Pump Drive) (For Electrical Governor)(#11911-11999)
01***20Bolt,(For Mono Lever Steering)10
01***75Bolt (M10-1.50x75)2
01***00Bolt,(For Front Brake Release)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Safety Guard (Injection Pump Drive) (For Electrical Governor)(#12000-)
01***20Bolt,(For Mono Lever Steering)6
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***75Bolt (M10-1.50x75)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Safety Guard (Injection Pump Drive)(#11640-)
01***20Bolt,(For Mono Lever Steering)14
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***40Bolt (Op)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Shield Plate(#11859-)
62***10Plate,Heat Shield2
62***11Plate,Heat Shield2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Starting Motor (7.5kw) (Inner Parts)(#11640-12608)
60***31Starting Motor Ass'Y,(7.5kw)1
KD***20Magnetic Switch Assembly1
KD***40Spring,Spring4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Starting Motor (7.5kw) (Inner Parts)(#12609-13249)
60***32Starting Motor Ass'Y,(7.5kw)2
KD***20Magnetic Switch Assembly1
KD***40Spring,Spring4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Starting Motor (7.5kw) (Inner Parts)(#13250-)
60***33Starting Motor Ass'Y,(7.5kw)2
KD***62Screw1
KD***02Washer, Spring4
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Starting Motor Mounting (7.5kw)(#11640-)
01***40Bolt,(With Center Guard)6
01***40Bolt (Kit)6
01***20Bolt2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Stop Motor And Linkage (For Mechanical Governor)(#11640-12377)
01***16Bolt,(Sandy And Dusty Spec.)2
01***05Nut (Welded)1
60***30Motor Ass'Y,(For Engine Stop)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Stop Motor And Linkage (For Mechanical Governor)(#12378-)
01***05Nut (Welded)1
60***31Motor,Stop1
69***10Joint,Ball1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Tension Pulley(#11406-)
Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Thermostat Housing (With Air Comppressor)(#11922-)
01***20Bolt,(For Mono Lever Steering)2
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***10Bolt,(With Joy Stick Steering)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Thermostat Housing(#11640-)
01***20Bolt,(For Mono Lever Steering)2
01***30Bolt,(With Body Positioner)2
01***10Bolt,(With Joy Stick Steering)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Turbocharger (Ktr110g-F45a) (Inner Parts)(#11526-)
01***16Bolt4
01***16Bolt8
01***16Bolt8
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Turbocharger And Lubricating Oil Piping(#11526-)
Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Turbocharger Blind Cover(#11526-)
01***25Bolt,Joint16
61***30Plate8
61***41Gasket,(Fig.A1530)8
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Water Pump (Without Corro.Rstr.)(#13460-)
01***20Bolt,(For Mono Lever Steering)1
01***25Bolt,(For Canvas Canopy?Head Guard)3
01***30Bolt,(With Body Positioner)3
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Water Pump Gasket Kit(#11640-)
07***60O-Ring,(For Pc750?800?1800) (A2610)1
07***80O-Ring,Hydraulic Oil Filter1
07***90O-Ring,(Dk029369-0020) (K2)1
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Water Pump(#10779-11669)
01***20Bolt,(For Mono Lever Steering)1
01***30Bolt,(With Body Positioner)7
01***30Bolt,(Not Used When Towing Winch)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Water Pump(#11670-11730)
01***20Bolt,(For Mono Lever Steering)1
01***30Bolt,(With Body Positioner)7
01***30Bolt,(Not Used When Towing Winch)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Water Pump(#11731-11882)
01***20Bolt,(For Mono Lever Steering)1
01***30Bolt,(With Body Positioner)7
01***30Bolt,(Not Used When Towing Winch)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Water Pump(#11883-12103)
01***20Bolt,(For Mono Lever Steering)1
01***30Bolt,(With Body Positioner)7
01***30Bolt,(Not Used When Towing Winch)2
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Komatsu : Sa12v140-1s-A(S/N 10001-Up) : Engine : Water Pump(#12104-)
01***20Bolt,(For Mono Lever Steering)1
01***30Bolt,(Not Used When Towing Winch)2
01***10Bolt,(With Joy Stick Steering)3
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SA12V140-1S-A(S/N 10001-UP) serial number reference

The engine serial plate is typically riveted to the left side of the engine block or near the injection pump. Read the three-character prefix at the start of the engine model code to identify the series and configuration.

PrefixIdentifies
ASA12V140-1S-A

Frequently asked questions

What engine powers the Komatsu SA12V140-1S-A (S/N 10001-UP)?

The Komatsu SA12V140-1S-A is a water-cooled, turbocharged and aftercooled V12 diesel engine with a 140 mm bore and 165 mm stroke, displacing 30.5 liters (30,480 cc). It features mechanical jerk-pump fuel injection with no electronic engine controller, driving through a torque converter and powershift transmission to a mechanical driveline and axle final drives.

What is the operating weight of the Komatsu SA12V140-1S-A machine?

Operating weight is not documented in available public sources for this exact configuration. The Komatsu 330M rigid haul truck it powers is built for a gross vehicle weight class of roughly 330,000 lb (150 t). Verify the exact operating weight with your dealer or the 330M Operation and Maintenance Manual for the confirmed serial range.

What replaced the Komatsu SA12V140-1S-A engine series?

The sources do not explicitly document a direct successor model that replaced the SA12V140-1S-A engine series. The SA12V140-1 series represents a single running production series with incremental factory running changes across multiple shop manual codes. Later Komatsu engines, such as the SAA12V140E-3, are part of the same family but are used in different applications like the HD785-7. No specific replacement model for the SA12V140-1S-A is identified in the provided data.

What SA12V140-1S-A(S/N 10001-UP) owners discuss

What is the engine configuration and displacement for the Komatsu SA12V140-1 series?
The SA12V140-1 is a water-cooled, turbocharged, and aftercooled V12 diesel engine. It has a bore of 140 mm and a stroke of 165 mm, resulting in a total piston displacement of 30.5 liters (30,480 cc). The firing order is R1, L1, R5, L5, R3, L3, R6, L6, R2, L2, R4, L4. The dry weight varies by configuration, typically ranging from 3,100 to 3,300 kg (6,834 to 7,275 lb). Power output varies by application and frequency (50 Hz or 60 Hz), with flywheel horsepower ratings generally between 770 HP (574 kW) and 808 HP (603 kW) at 2,000 rpm. The specific governor type (mechanical or electronic) varies by serial block and machine application; verify the exact governor configuration against the shop manual for the specific serial range, as it varies by configuration/series.
What are the common hydraulic and powertrain behaviors associated with Komatsu excavators using this engine family?
Komatsu machines in this class are noted for smooth operation and high fuel efficiency. A common diagnostic pattern is that if all hydraulic functions (boom, arm, bucket, swing, travel) become slow simultaneously, the issue is likely shared (hydraulic oil level, filters, engine speed, or main pump control) rather than a single cylinder failure. If only one function is slow, focus on that specific circuit (valve, cylinder, or hose). Owners report that if a hydraulic pump fails, the engine may suffer damage shortly after due to debris ingestion. Hydraulic performance often degrades when hot due to decreased oil viscosity exposing internal leakage in pumps, valves, or cylinders; always compare cold and hot performance before replacing the main pump.
What undercarriage and wear patterns are typical for machines in this class?
Components such as track pads, bushings, and bearings are subject to significant wear. Worn bushings lead to increased noise and vibration, while worn bearings can cause premature track failure. Track tension and undercarriage wear are critical; a machine that pulls to one side may have mechanical resistance (mud/debris in the track, roller condition) rather than a hydraulic travel motor fault. Test the symptom in both forward and reverse to isolate hydraulic issues from mechanical binding. The undercarriage line is often designed to wear out the complete machine simultaneously, impacting resale value.
What are the common electrical and sensor issues for this engine series?
Komatsu excavators rely heavily on electronic control systems. A single faulty sensor or unstable power supply can trigger multiple warning signals. Common reported issues include intermittent starting, dashboard failures, and random machine shutdowns. If the engine cranks but does not start, check the battery state of charge under load, engine/chassis grounds, and the main starter cable. A battery may show acceptable voltage until the starter is loaded; perform a voltage-drop test before ordering a starter. If the machine stopped starting after filter replacement, check the recent work before assuming component failure.
What are the recommended fluid specifications and capacities for the SA12V140-1 engine?
Engine oil capacity varies by configuration/series. The total system oil volume ranges from approximately 88 to 132 liters (23 to 35 US gal), with drain-and-refill (including filter change) typically between 80 and 120 liters (21 to 32 US gal). Use Komatsu Genuine EO diesel engine oil. For earlier builds, use EO10W30-DH or EO15W40-DH; for emissions-controlled builds, use low-ash grades EO10W30-LA or EO15W40-LA. Select viscosity based on ambient temperature (10W30 for cold, 15W40 for warm). Cooling system capacity is not documented for all specific truck installations in available sources; verify with the dealer or operation and maintenance manual. Use Komatsu Super Coolant (AF-NAC or AF-ACL type). Fuel tank capacity varies by configuration/series; verify against the specific machine's operation and maintenance manual. Use ultra-low-sulfur diesel fuel meeting the engine's specification.
What are the key maintenance intervals for the SA12V140-1 engine?
Every 10 hours: Check engine oil level, coolant level, drain water from fuel tank sumps, and inspect for leaks. Every 250 hours: Change engine oil and filter, grease chassis points, service air cleaner, check powertrain oil level, and inspect brake wear. Every 500 hours: Replace primary and secondary fuel filters, pull fluid samples, replace hydraulic oil filters, and inspect driveline U-joints. Every 1,000 hours: Change powertrain oil, check and adjust engine valve lash (mechanical jerk-pump engines require this), inspect turbocharger and aftercooler, and check injection pump drive/fuel linkage. Every 2,000 hours: Change hydraulic oil, change axle/final drive oil, drain/flush/refill coolant, and inspect wet-disc brake packs. Every 6,000 hours: Evaluate engine for overhaul, inspect torque converter/clutch packs, and overhaul brake assemblies.
What should be checked when buying a used Komatsu SA12V140-1S-A(S/N 10001-UP)?
Verify the exact serial-prefix specification sheet and installed attachment package, as configurations (counterweight, track shoe, boom, stick, emissions package) change weight, reach, and fuel use. Check the engine governor type (mechanical vs. electronic) as it varies by serial block. Inspect the cooling package (radiator, hydraulic oil cooler, charge-air cooler) for packed debris between heat exchangers. Test hydraulic performance cold and hot to identify internal leakage. Check for corrosion in exposed components and rusting of metal structures. Verify the condition of the undercarriage, specifically track tension, roller condition, and bushing wear. Ensure the battery and starting system are robust, as weak batteries cause prolonged downtime. Have your dealer verify the exact governor configuration and fluid capacities for the specific serial range.

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

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