Komatsuengine(no series)

Komatsu SDA6D140E-2E-9(S/N 22537-UP)

Maintenance schedule, common problems & OEM parts breakdown

Search live SDA6D140E-2E-9(S/N 22537-UP) parts

The SDA6D140E-2E-9(S/N 22537-UP) is a Komatsu 6D140-2-family diesel engine: a turbocharged, aftercooled, mechanically governed inline-six built as the power unit for the Komatsu D275A-5, a roughly 50-tonne class crawler dozer used in mining, quarry, and heavy earthmoving work. In this D275A-5 application the engine is rated in the 306 kW (410 HP) class, and the host dozer carries an operating weight of about 49,850 kg (109,900 lb) depending on blade and undercarriage configuration. This engine designation covers the D275A-5's earlier production run; later-serial D275A-5 chassis moved to the newer SDA6D140E-3 generation of the same base engine, and the line's predecessor, the D275A-2 (built through the early 2000s), used a different and larger-displacement 6D170-family engine. Komatsu also offered this engine in a -50C arctic-spec configuration for extreme cold-region operation, alongside the standard-climate build.

Across the D275A-5's production life, Komatsu moved the engine forward from this -2E-9 build to the -3 generation without changing the dozer's model designation, then eventually introduced the D275A-5R with the larger SAA6D140E-5 engine (about 335 kW / 449 HP) as the current top-of-line machine in this size class. The SDA6D140E-2E-9 itself represents a step down in displacement from the D275A-2's 6D170-family engine while holding comparable power through turbocharging and aftercooling, reflecting Komatsu's broader shift toward more compact, higher-boost engines. In the used and parts market, this mechanically governed, pre-electronic engine remains valued for its simplicity and serviceability in remote or extreme-climate operations where diagnostic support is limited; as factory parts supply shifts toward the newer -3 and SAA6D140E-5 generations, demand grows for rebuilt injection pumps, turbochargers, and other take-off components to keep early-serial D275A-5 dozers running.

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 SDA6D140E-2E-9(S/N 22537-UP) specifications

Engine

Engine family / arrangementKomatsu 6D140-2 series, SDA6D140E-2E-9 arrangement (S/N 22537-UP). Second-generation 6D140 diesel platform, distinct from the later SDA6D140E-3 and SAA6D140E-5 arrangements used on other production runs of the same host dozer.
ConfigurationInline 6-cylinder diesel, water-cooled, turbocharged with aftercooling (charge-air cooled).
Bore x stroke140 mm x 165 mm (5.51 in x 6.50 in).
Displacement15.24 L (930 cu in).
Gross power (engine family rating)Approx. 368 kW (493 hp) at 1900 rpm, as published for the 6D140-2 family. Not separately confirmed for the E-9 arrangement specifically — output for a given arrangement on this platform can vary by application; verify the exact flywheel rating for this serial range with a dealer or the shop manual data plate.
Maximum torque (engine family rating)Approx. 2237 N*m at 1200 rpm, as published for the 6D140-2 family. Same verification caveat as gross power applies to the E-9 arrangement.
Fuel systemDirect-injection diesel with mechanical/jerk-pump governing typical of the 2-series platform; no factory electronic emissions aftertreatment.
Emissions tierPredates modern exhaust-emissions regulation for this displacement class (uncontrolled/mechanical-era diesel design).
Primary applicationPower plant for the Komatsu D275A-5 crawler dozer built to a -50°C cold-climate specification. Other arrangements within the same base 6D140-2 engine family (different suffix codes) were also fitted to other Komatsu dozer and excavator models, but those use different arrangement numbers than this serial break.

Weights

Engine dry weightNot published in available dealer or spec-aggregator sources for this specific arrangement. Verify with the shop manual or a Komatsu dealer.
NoteThis job covers the bare engine, not a complete machine. Host-machine operating weight is not attributed here to avoid mixing figures from a different engine generation used on later D275A-5 production.

Dimensions

Engine external dimensionsNot published in available sources for this arrangement. Bore and stroke are listed under Engine.

Performance

Rated (governed) speedApprox. 1900 rpm, per the 6D140-2 family rating referenced under Engine. Not independently confirmed for the E-9 arrangement.
Peak torque speedApprox. 1200 rpm, per the same family rating.
Idle speedNot documented in available sources for this arrangement.

Service capacities (summary)

Engine oil (crankcase)Not documented in available sources for this specific arrangement. Consult the shop manual for the 6D140-2 series or a dealer.
Cooling system (engine circuit)Not documented in available sources for this specific arrangement.
Fuel systemNot applicable — bare engine has no integral fuel tank; tank capacity is a host-machine spec and is not attributed here to avoid cross-generation contamination.

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

SDA6D140E-2E-9(S/N 22537-UP) fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with oil filter)approx. 87–99 L (23–26 US gal) refill, based on the closest documented 6D140-2 family bulldozer installation; exact figure for this specific arrangement and host machine is not independently confirmed — verify against the host machine's own operation & maintenance manualKomatsu Genuine diesel engine oil (EO series, e.g. EO10W-30-DH / EO15W-40-DH) meeting JASO DH-1, API CI-4 and ACEA E7. Grade is picked from the machine's viscosity-by-ambient-temperature chart — lighter 10W-30 for cold climates, 15W-40 for temperate to warm climates.
Cooling system (radiator and engine block)approx. 99–107 L (26–28 US gal), based on the closest documented 6D140-2 family bulldozer installation; total volume depends on the host machine's radiator sizing and varies by installationKomatsu Super Coolant AF-NAC, factory pre-mixed antifreeze/coolant for year-round use and extended service life. Top off with the same AF-NAC concentration; do not mix coolant types.
Fuel tank, transmission/powertrain, hydraulic system and tank, final drives, axlesnot applicable to this itemThis is a bare engine assembly fitted across several Komatsu machine chassis depending on arrangement; fuel, transmission, hydraulic, final-drive and axle capacities and fluid choices are set by the host machine's own operation & maintenance manual, not the engine documentation.
Grease (external linkage/mounting points, spec only)n/a — specification onlyKomatsu Genuine multipurpose grease (lithium EP / moly-EP type) for any external linkage or mounting points on the engine or its brackets, where equipped. Follow the host machine's lubrication interval chart.

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

Komatsu SDA6D140E-2E-9(S/N 22537-UP) maintenance schedule

Service intervalTasks
Every 50 h
  • Check engine oil level and top up with the cold-weather-grade oil before starting each shift.
  • Check coolant level in the sub-tank and look for leaks around the block, water pump, and turbocharger housing.
  • Drain water and sediment from the fuel tank and fuel pre-filter/water separator.
  • Check the corrosion resistor cartridge sight glass on the coolant circuit and replace the element if discolored.
  • Inspect fan belt tension and condition for cracking from repeated cold starts.
  • Check turbocharger intake ducting and clamps for looseness or cracks.
Every 250 h
  • Change engine oil and replace the oil filter, using the viscosity grade specified for the operating climate.
  • Replace the fuel filter cartridge.
  • Clean or replace the air cleaner outer element and inspect the safety element.
  • Grease the injection pump and governor linkage points.
  • Clean the radiator and oil cooler cores of debris and packed dust.
  • Check turbocharger and exhaust manifold mounting bolts for correct torque.
Every 500 h
  • Replace the corrosion resistor cartridge on the engine coolant circuit.
  • Check and adjust fan belt tension; replace a worn or glazed belt.
  • Clean the crankcase breather and fuel tank breather.
  • Inspect the turbocharger for oil seepage at the compressor and turbine seals.
  • Check engine mounting bolts and isolators for looseness.
  • Test coolant freeze-point protection ahead of continued cold-region service.
Every 1,000 h
  • Replace the fuel pre-filter/water separator element and the main fuel filter.
  • Check and adjust valve clearance per the mechanical fuel-injection engine's service settings.
  • Inspect and clean the turbocharger compressor and turbine housings.
  • Sample engine oil for wear-metal and coolant-contamination analysis.
  • Check injection pump timing and governor linkage adjustment.
  • Inspect the aftercooler core and intake piping for leaks or fouling.
Every 2,000 h
  • Drain and replace engine coolant; flush the cooling system and renew the corrosion resistor.
  • Inspect the fuel injection pump and nozzles; test and reset injection timing.
  • Check turbocharger shaft end-play and bearing wear; rebuild or replace if out of tolerance.
  • Re-torque cylinder head bolts to the mechanical-injection engine's specification.
  • Check the water pump and thermostat for wear and correct opening temperature.
  • Inspect the cold-start aid circuit (intake heater or ether-assist system) fitted for -50C operation.
Every 4,000 h
  • Remove and inspect cylinder liners, pistons, and rings against factory wear tolerances.
  • Rebuild or replace the turbocharger as a unit.
  • Check crankshaft main and rod bearing clearances.
  • Inspect the camshaft and timing gear train for wear.
Every 8,000 h
  • Perform a top-end overhaul: recondition the cylinder head, valve seats, and guides.
  • Replace the injection nozzles and pump as a matched set.
  • Inspect the block for cold-climate stress cracking near coolant passages.
  • Rebuild the turbocharger core assembly, replacing wear-prone bearings and seals.

Servicing the SDA6D140E-2E-9(S/N 22537-UP) beyond the schedule

Predictive Maintenance & Fluid Analysis

Run scheduled engine oil sampling on the SDA6D140E-2E-9 to catch wear-metal trends before the mechanically governed injection pump or turbocharger bearings fail outright — this engine carries no ECM fault codes, so oil analysis and coolant testing are the only early-warning tools available. Track soot loading and iron/copper counts against baseline, watch coolant freeze point and corrosion-resistor cartridge condition closely given the -50C spec, and log fuel filter differential pressure to predict injection pump wear on the D275A-5 it powers.

Corrective & Common Repairs

Typical corrective work on this engine centers on the mechanical governor and injection pump linkage, turbocharger seal seepage, and cracked or loose air intake ducting from constant thermal cycling in cold-region service. Corrosion resistor cartridge neglect leads to internal coolant passage pitting in the block and head, a frequent complaint on high-hour D275A-5 dozers. Fan belt and mounting isolator wear are common line items given the torque and vibration this inline-six transmits through the D275A-5 chassis.

Overhaul & Rebuild Points

Overhaul work on the SDA6D140E-2E-9 focuses on cylinder liner and piston ring wear, main and rod bearing clearances, and turbocharger core rebuilds once shaft end-play exceeds tolerance. Because this is the earlier -2E-9 build within the D275A-5's engine lineage, expect fewer new-production parts and more reliance on remanufactured injection pumps, nozzles, and turbo cartridges. Inspect the block for cold-climate stress cracking near the corrosion resistor housing and re-torque cylinder head bolts to the mechanical-injection spec after any teardown.

Seasonal & Environment Servicing

Built for -50C arctic-spec D275A-5 dozers, this engine needs cold-start discipline: verify the intake air heater or ether-assist starting aid, switch to arctic-grade engine oil and fuel ahead of winter, and confirm coolant concentration protects to the rated temperature before each cold season. In warmer or dusty environments, shorten air cleaner and radiator/aftercooler-core cleaning intervals, since this turbocharged, aftercooled inline-six is more sensitive to intake restriction and heat soak than the machine's other running gear, and watch corrosion resistor cartridge life if switching climates seasonally.

SDA6D140E-2E-9(S/N 22537-UP) common service parts

Part numberPart
6212-72-6100Fuel Filter Ass'YCheck fitment →
600-185-6100Element Assembly, Air CleanerCheck fitment →
6162-53-5430Packing,Oil Filter And PipingCheck fitment →
6162-53-5450Packing,Oil Filter And PipingCheck fitment →
600-211-1340Cartridge, Oil FilterCheck fitment →

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

SDA6D140E-2E-9(S/N 22537-UP) fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
Charge level caution lampAlternator is not charging the batteryCharging circuit fault - failed alternator, loose or broken fan belt, damaged wiring or connectorStop and check fan belt tension and alternator wiring; test charging output before continued operation
Engine oil pressure caution lampEngine lube oil pressure has dropped below the safe thresholdLow oil level, clogged oil filter or strainer, worn oil pump, faulty oil pressure switchStop the engine immediately, check oil level and filter condition before restarting
Engine coolant temperature caution lampEngine coolant temperature has risen above the normal operating rangeLow coolant level, clogged radiator fins, loose or worn fan belt, thermostat stuck closedRun the engine at low idle until the coolant temperature gauge returns to the green range, then check coolant level and radiator
Power train (torque converter) oil temperature caution lampTorque converter outlet oil temperature has risen above the normal rangeSustained heavy load, low power train oil level, clogged power train oil coolerRun the engine at low idle until the power train oil temperature gauge returns to the green range, then check oil level and cooler
Hydraulic oil temperature caution lampHydraulic oil temperature has risen above the normal rangeSustained heavy hydraulic load, low hydraulic oil level, clogged hydraulic oil coolerStop the machine and run the engine at low idle until oil temperature falls, then check oil level and cooler fins
Air cleaner clogging caution lampAir cleaner element restriction has reached the clogging thresholdDust-loaded air cleaner element, clogged dust evacuator valveStop the engine, inspect and clean or replace the air cleaner element, and check the dust evacuator

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

SDA6D140E-2E-9(S/N 22537-UP) attachments & work tools

Attachment / work-tool applicability

This is a bare power unit, not a complete machine, so no independent work-tool or implement attachment line exists for the engine itself. Blade, ripper, or other ground-engaging tool choices belong to the host dozer's own equipment list, not to the engine assembly.

Host machine and generation

This engine build powers the Komatsu D275A-5 crawler dozer, built to a factory cold-region (approximately -50C) specification on early production carrying this engine's serial break. Later D275A-5 production switched to the newer SDA6D140E-3 series engine, so specs and options for that generation do not carry over to this one.

Aspiration and turbocharger configuration

Six-cylinder, water-cooled, direct-injection diesel with turbocharging and aftercooling as the standard factory aspiration setup for this series. No naturally aspirated or turbo-only (non-aftercooled) build is documented for this serial range.

Cooling and climate-spec variant

Factory cold-weather (B) spec applies to this serial range, split into two build breakpoints: one without a supplemental coolant heater and a later one with a Webasto-type coolant heater added into the heater piping circuit. The cold-weather package also swaps in a dedicated muffler and adds an exhaust rain cap.

PTO / accessory drive options

No model-specific power-take-off or bolt-on accessory-drive kit is documented for this serial range. Engine-driven accessories such as the cooling fan and alternator are standard factory-fit items on the base engine, not separately optioned attachments.

Coupler / mounting system

Not applicable in the work-tool-coupler sense. The engine locates to the dozer chassis on its own factory engine mounts and driveline coupling, with no quick-coupler or implement-interface system involved.

All SDA6D140E-2E-9(S/N 22537-UP) assemblies by section

Every catalogued assembly group for the Komatsu SDA6D140E-2E-9(S/N 22537-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Engine
Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : After Cooler Water Piping(#30560-)
01***20Bolt, Hose Clamps (Inlet And Return Line Hoses)2
01***25Bolt, Mount Engine Oil Drain To Fuel Tank3
01***55Bolt, Mount Dryer To Bracket And Frame2
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Air Cleaner Mounting (Extreme Cold Terrain Spec.)(#30560-)
01***30Bolt,(With Body Positioner)12
01***45Bolt,(With Water Separator Type)6
01***40Capscrew2
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Air Intake Manifold And After Cooler(#30560-)
01***00Bolt,(For Front Brake Release)6
01***55Bolt,(With Corrosion Resistor)7
01***60Bolt2
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Alternator Mounting (75a) (Extreme Cold Terrain Spec.) (With Hardening Pulley)(#30560-)
01***20Bolt, Wiring Harness Mounting Bracket3
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***60Bolt,For Weight Adjusting Bolt1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Camfollower Cover (Extreme Cold Terrain Spec.)(#29875-)
01***16Bolt, Battery To Frame Ground Wire Attaching1
01***30Bolt,(With Body Positioner)5
01***65Bolt - Return Line And Suction Linehose Clamps1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Camfollower(#26075-)
04***12Ring, Retaining4
61***30Pin,Dowel12
61***20Ball1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Camshaft(#30560-)
01***20Bolt (M12-1.75x20)2
04***25Key, Plain Woodruff1
62***12Camshaft Assembly1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Cooling Fan (Extreme Cold Terrain Spec.)(#30560-)
01***40Bolt,For Weight Adjusting Bolt6
01***32Washer6
60***80Fan Sub Ass'Y1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Corrosion Resistor (1/2) (Extreme Cold Terrain Spec.)(#30560-)
01***45Bolt1
01***16Bolt - Starting Motor Ground Cable2
01***20Bolt, Hose Clamps (Inlet And Return Line Hoses)1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Corrosion Resistor (2/2) (Extreme Cold Terrain Spec.)(#30560-)
01***40Screw1
01***16Bolt - Starting Motor Ground Cable4
01***20Bolt, Hose Clamps (Inlet And Return Line Hoses)4
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Crank Pulley(#30560-)
04***24Pin,Dowel (For No.3 Housing)1
61***30Bolt6
62***40Flange1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Crankshaft
61***30Key Parallel1
62***00Bearing Assembly1
62***10Main Bearing Assembly7
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Cylinder Block (1/2)(#26673-)
01***45Washer,(Without R.O.P.S.)14
04***14Pin, Dowel2
04***20Pin,Dowel (Welded)12
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Cylinder Block (2/2)(#26673-)
01***25Bolt,(Without Rops Guard? Canopy)2
01***25Screw6
01***16Washer,(With Water Separator)6
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Cylinder Block Cover (Extreme Cold Terrain Spec.)(#30560-)
01***50Bolt,(Spark Arrester Spec.)2
01***14Bolt - Fuel Sensor Mounting1
01***20Bolt, Hose Clamps (Inlet And Return Line Hoses)3
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Cylinder Block Gasket Kit (Extream Cold Terrain Spec.)(#30560-)
01***12Washer,(F2320-63a2 -13 )2
07***14O-Ring,(F4350-63a1a-2 )1
07***60O-Ring,(For Pc750?800?1800) (A2610)1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Cylinder Head Gasket Kit (Extreme Cold Trrain Spec.)(#30560-)
02***75O-Ring,(For Japan) (K1)4
02***81O-Ring,Air Connector2
07***25O-Ring,Corrosion Resistor4
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Cylinder Head(#22653-)
01***20Bolt (M10-1.75x120)6
04***20Pin,Dowel (Welded)12
07***25O-Ring,Lubrication Valve1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Damper
01***30Bolt,(Not Used When Towing Winch)6
01***32Washer,(Not Used With Emergency Str.)6
62***00Damper Ass'Y1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Dual Water Pump (Extreme Cold Terrain Spec.)(#30560-)
01***16Bolt - Seat And Tether Belt Mounting6
01***35Bolt, Mount Bracket To Floor2
01***50Bolt,(See Fig.A4010-C3w6)3
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Dual Water Pump Mounting (Extreme Cold Terrain Spec.)(#30560-)
01***35Stud4
01***20Bolt,See Fig. K4010-11a03
01***25Bolt - Relay Mounting2
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Engine Mounting(#30560-)
17***11Support,Front1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Engine Wiring (Extreme Cold Terrain Spec.)(#30560-)
01***16Bolt - Starting Motor Ground Cable7
01***45Bolt, Bracket Mounting1
01***50Bolt,(See Fig.A4010-C3w6)1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Exhaust Manifold(#30560-)
01***55Screw2
01***00Screw22
07***08Plug,(For W/O. Corrosion Resistor)1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Exhaust Pipe (Extreme Cold Terrain Spec.)(#30560-)
62***20Pipe? Exhaust1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Flyeheel(#30560-)
61***51Gear, Ring1
62***50Bolt6
62***00Flywheel Assembly1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Flywheel Housing(#30560-)
01***50Capscrew6
01***65Capscrew2
01***70Capscrew2
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Front Cover And Breather Related Parts (Extreme Cold Terrain Spec.)(#30560-)
01***16Bolt - Box Mounting2
01***30Bolt - M8 X 30lg2
01***20Bolt,(For Mono Lever Steering)2
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Front Cover(#27560-)
07***16Plug, Expansion7
62***70Sleeve1
62***10Cover,Front1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Front Power Take Off (Without Front Power Take Off)(#30560-)
01***20Bolt,(For Mono Lever Steering)3
01***25Bolt,(Without Rops Guard? Canopy)1
01***15Bolt, Fan Mounting1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Fuel Filter(#30560-)
01***20Bolt,(Forwarded Individually Parts)2
01***35Bolt, Cover1
01***16Bolt - Starting Motor Ground Cable1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Fuel Injection Pump Drive(#22653-)
01***16Bolt - Seat And Tether Belt Mounting3
01***19Nut1
01***16Washer,(For Shipping)3
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Fuel Injection Pump Lubricator(#22885-)
07***12Gasket,(Without Air Compressor Type) (K1)4
07***14Screw, Banjo Connector (M10)2
62***10Tube,Drain1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Fuel Injection Pump Mounting (Extreme Cold Terrain Spec.)(#30560-)
01***90Bolt,(For No?1 And No?3 Housing)4
01***16Washer,Radio Controlled Slag Handling4
07***10Connector, Grease Fitting1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Fuel Injection Pump Piping
01***25Capscrew4
01***30Screw4
01***35Bolt4
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Fuel Injection Pump Safety Guard(#30560-)
01***20Bolt, Hose Clamps (Inlet And Return Line Hoses)2
01***25Bolt, Mount Engine Oil Drain To Fuel Tank1
01***60Bolt - Upper Cooler Inlet Tubemounting1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Fuel Return(#30560-)
07***12Gasket,Mechanical Pump Piping3
07***12Gasket,Injection Pump Piping2
07***12Gasket,(Without Air Compressor Type) (K1)2
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Head Cover Mounting(#26084-)
01***55Screw18
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Head Cover(#26084-)
62***11Cover,Rocker Arm Housing6
62***20Gasket, Rocker Lever Housing6
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Heat Shield(#30560-)
01***25Bolt4
01***16Bolt (Op)2
01***20Bolt, Hose Clamps (Inlet And Return Line Hoses)8
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Heater Switch Wiring (Extreme Cold Terrain Spec.)(#30560-)
01***12Bolt,(With Speedometer)2
01***16Bolt - Starting Motor Ground Cable2
01***60Bolt - Upper Cooler Inlet Tubemounting1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Idler Gear(#26526-)
01***30Bolt - M8 X 30lg6
61***60Pin, Dowel1
61***22Bolt1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Injection Nozzle(#30560-)
01***20Capscrew6
07***21Seal, O-Ring6
07***12Gasket,Mechanical Pump Piping10
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Muffler Connection(#30560-)
01***45Capscrew4
01***30Bolt2
61***20Spacer,(Without Corrosion Resistor)2
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Muffler Mount (Extreme Cold Terrain Spec.)(#30560-)
01***30Bolt,(With Body Positioner)2
01***45Bolt,(With Water Separator Type)2
01***45Capscrew4
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Name Plate And Caution Plate(#25887-)
04***50Screw4
09***40Plate? Name,(Limited Supply) (English)1
60***00Plate,(Limited Supply)1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Nozzle Holder (Inner Parts)(#30560-)
62***31Connector1
62***12Holder Ass'Y,(See Fig.A4210-B7a4)1
62***00Nozzle Holder Ass'Y6
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Oil Adapter (Extreme Cold Terrain Spec.)(#30560-)
01***16Bolt - Seat And Tether Belt Mounting3
01***30Bolt,(With Body Positioner)6
01***60Bolt,(F4320-52a0 -5- )5
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Oil Cooler(#22653-)
01***20Bolt, Wiring Harness Mounting Bracket2
01***30Bolt,(With Body Positioner)13
01***60Bolt,(F4320-52a0 -5- )2
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Oil Level Gauge (Extreme Cold Terrain Spec.)(#30560-)
01***16Bolt - Starting Motor Ground Cable1
61***20Collar1
61***30Nut,(For Shipping)1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Oil Pan And Suction Tube (Extreme Cold Terrain Spec.)(#30560-)
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***30Bolt,(With Body Positioner)1
01***60Bolt,(F4320-52a0 -5- )12
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Oil Pan Heater (Extreme Cold Terrain Spec.)(#30560-)
01***16Bolt - Starting Motor Ground Cable2
01***35Bolt, Mount Bracket To Floor1
04***10Clip,(For Mono Lever Steering)2
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Oil Pump(#22653-)
01***25Bolt,(Rear Attachment Less)4
01***30Bolt,(Not Used When Towing Winch)1
01***40Bolt,For Weight Adjusting Bolt2
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Piston
02***13Pin, Dowel2
04***20Ring, Retaining12
62***10Bolt2
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Rocker Arm And Housing(#26075-)
01***80Bolt (M12-2.00x80)6
01***80Bolt (M10-1.50x80)17
01***20Bolt (M12-1.75x120)12
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Spare Parts (Extreme Cold Terrain Spec.)(#30560-)
60***40Cartridge, Oil Filter2
60***52Cartridge,Fuel1
60***80V-Belt Set,Alternator Drive1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Starting Motor Mounting (11kw) (Extreme Cold Terrain Spec.)(#30560-)
01***16Bolt - Starting Motor Ground Cable1
08***19Band - Tie Hose To Wire Harness2
08***10Bracket, Bucket Position Sensor2
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Thermostat And Air Vent (Extreme Cold Terrain Spec.)(#30560-)
01***20Capscrew1
01***40Bolt1
01***20Bolt1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Turbocharger (Ktr110l-585e) (Extreme Cold Terrain Spec.) (Inner Parts)(#30560-)
01***16Bolt4
01***16Bolt8
04***08Pin, Dowel1
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Turbocharger And Oil Piping (Extreme Cold Terrain Spec.)(#30560-)
01***20Bolt,(For Mono Lever Steering)1
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***35Bolt,(F4320-52a0 -5 )2
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Water Pump (Extreme Cold Terrain Spec.)(#30560-)
01***20Bolt,(For Mono Lever Steering)1
01***80Bolt (M10-1.50x80)1
01***95Bolt,(For Shipping)3
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Komatsu : Sda6d140e-2e-9(S/N 22537-Up) : Engine : Water Pump Gasket Kit(#30560-)

SDA6D140E-2E-9(S/N 22537-UP) serial number reference

On the D275A-5 the machine PIN/serial plate is mounted on the frame under or beside the operator's cab (older units may carry it inside the cab behind the seat); the engine carries its own separate data plate on the block near the fuel injection pump, so always read the chassis plate first. Match the chassis PIN's serial number against the parts-book "S/N nnnnn-UP" break to confirm which engine generation is actually fitted, since a rebuilt or swapped engine may not match the machine's original factory pairing.

PrefixIdentifies
22537-UPKomatsu D275A-5 crawler dozer, SDA6D140E-2E-9 (140-2 series) engine

Frequently asked questions

What engine does the Komatsu SDA6D140E-2E-9(S/N 22537-UP) use?

It is itself the engine — a turbocharged, aftercooled, mechanically governed inline-six diesel from Komatsu's 6D140-2 family, rated in the roughly 306 kW (410 HP) class as fitted to the D275A-5 crawler dozer. Later D275A-5 production (higher serial ranges) moved to the newer SDA6D140E-3 generation of the same base engine.

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

The host Komatsu D275A-5 crawler dozer runs about 49,850 kg (109,900 lb) operating weight in its standard configuration; the figure varies by blade, ripper, and undercarriage options fitted.

What replaced the SDA6D140E-2E-9 in the D275A-5 lineup?

Later-serial D275A-5 dozers moved to the SDA6D140E-3 engine generation, and Komatsu's current top-of-line machine in this size class, the D275A-5R, uses the newer SAA6D140E-5 engine rated at about 335 kW (449 HP).

What SDA6D140E-2E-9(S/N 22537-UP) owners discuss

What do operators say about how the D275A-5's powertrain behaves day to day?
Reports describe a torque-converter-fed power shift transmission with electronically modulated steering clutches and brakes, tuned to keep gear changes and turns smooth. Some operators note the ride is stiffer through turns than a comparable competitor dozer, with more jerk and jolt at direction change. A known failure pattern on this transmission family is loss of charge/inlet pressure to the torque converter: the machine runs fine at first, then the converter and transmission overheat together as the circuit starves. Have your dealer verify torque converter charge pressure and steering clutch modulation if you notice overheating or rough direction changes.
What undercarriage wear pattern is typical for this dozer?
The D275A-5 uses Komatsu's K-Bogie suspended undercarriage, which lets track rollers pivot on two fulcrums and stay in constant contact with the track links. That keeps impact loading down and stretches roller and link life compared to a rigid-mount undercarriage, with less vibration reaching the operator over rough ground. Even so, normal wear items still need watching: track sag and tension, sprocket tooth wear, and roller seal weep, especially in the abrasive or frozen ground this cold-climate spec machine is built for.
Are there real quirks or generation differences in the engine fitted to this dozer?
Yes. The SDA6D140E-2E-9 (S/N 22537-UP) is the cold-weather (-50°C) spec engine used on early D275A-5 production. It is mechanically governed, with an inline fuel injection pump and no ECM, rated around 306 kW (410 hp) at 2000 rpm and roughly 2237 N·m (1650 lb-ft) peak torque near 1200 rpm on 15.24 L displacement. Later D275A-5 production (from S/N 25001 up) moved to the SDA6D140E-3 generation, which runs a different, electronically controlled fuel system. Don't cross-apply fuel-system parts or troubleshooting between the two generations; confirm engine serial and arrangement before ordering injection components.
What electrical or sensor issues come up most on machines from this era?
Because this is a mechanically governed engine, most electrical complaints are basic charging and starting circuit faults rather than ECM codes. A failed alternator diode is a repeat offender: it can drop the starter relay and keep the battery relay from energizing, so the machine won't crank even though the battery tests fine. Starter safety relay failure, the interlock that blocks cranking while the engine is running, is another common cause of a no-crank complaint. Monitor panel dimming or erratic gauge readings usually trace back to sender wiring or a weak panel ground rather than the sensor itself.
What's the real-world oil consumption and turbo experience with this engine family?
The turbocharger used across the 6D140-2 family carries a solid reliability reputation. Oil consumption is the item to track: a heavy-duty stationary application on a sibling 6D140-family engine reported consumption climbing to several liters a week under near-continuous running, even after a rebuild that included the turbo. A dozer duty cycle is less severe, but it is still worth logging oil top-ups against hours rather than assuming a fixed interval, and checking ring wear, breather restriction, and turbo shaft seals if consumption trends upward.
What do long-term owners report needing attention at specific hour marks?
Owner feedback on the D275A-5 family mentions a manual throttle control needing replacement within the first several hundred hours, and a water pump seal weep showing up around the 9,000-hour mark on otherwise well-maintained machines. General consensus is that the machine holds up well with disciplined maintenance, running well past 10,000 hours before major components wear out, but several owners note parts support and lead time lag behind competitor brands in some regions, which matters more on an older cold-spec engine like this one.
What should I check before buying a used D275A-5 with this SDA6D140E-2E-9 engine?
Confirm the engine serial and arrangement plate match SDA6D140E-2E-9 (S/N 22537-UP) so parts and service data line up; don't assume interchange with the later -3 generation. Check crankcase oil level trend and look for blue smoke under load, a sign of turbo or ring wear. Have the torque converter charge pressure and steering clutch/brake modulation tested; rough turning or heat buildup under load points at the known charge-pressure fault on this transmission family. Inspect the K-Bogie rollers, idlers, and track links for even wear and correct sag, and check the water pump for seal weep. Verify the glow plug/cold-start system given the -50°C spec rating, and confirm the monitor panel gauges and starter safety relay work correctly. Have your dealer verify torque converter pressure, steering clutch condition, and overall engine compression/blow-by 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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