Komatsuengine(no series)

Komatsu SA6D102E-1B-C(S/N 26200467-UP)

Maintenance schedule, common problems & OEM parts breakdown

The Komatsu SA6D102E-1B-C engine (S/N 26200467-UP) is a turbocharged, aftercooled diesel powerplant belonging to the 102 series family. It is primarily associated with the WA320-3H wheel loader generation, a mid-size machine class with an operating weight range of approximately 34,000 to 35,000 lb (15,422 to 15,876 kg). Production for this specific engine serial range aligns with the late dash-3 and early dash-8 wheel loader eras, bridging the transition from pre-Tier 3 to Tier 4 Interim emissions standards. The SA6D102E-1B-C configuration succeeded earlier 102-1 series variants and was eventually replaced by the SAA6D114 series in later WA320-8 models. Configurations offered include standard air-to-air aftercooling and varying torque converter setups depending on the specific loader attachment package.

Across the 102 series generations, the primary changes involved the transition from the naturally aspirated or early turbo 102-1 designs to the more efficient 102-2 and subsequent Tier 4 compliant iterations. The SA6D102E-1B-C matters in the used and parts market because it powers a high-volume wheel loader platform that remains active in aggregate and material handling fleets. Its inline-six architecture offers robust torque characteristics and widespread parts availability, making it a cost-effective alternative to newer, more complex emissions-controlled engines. The specific S/N 26200467-UP range indicates a mature machine age where overhaul kits and inframe rebuild components are critical for extending service life in heavy-duty applications.

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 SA6D102E-1B-C(S/N 26200467-UP) specifications

Engine

ModelSA6D102E-1B-C
Gross Power160 hp (119 kW)
Net Power158 hp (118 kW)
Displacement5.88 L (358.9 cu in)
Cylinders6
Emissions TierTier 4 Final / Stage V

Weights

Operating Weight22,178 kg (48,898.6 lb)
Shipping WeightNot documented for this exact serial range — verify with your dealer
Ground PressureNot documented for this exact serial range — verify with your dealer

Dimensions

Transport LengthNot documented for this exact serial range — verify with your dealer
Transport WidthNot documented for this exact serial range — verify with your dealer
Transport HeightNot documented for this exact serial range — verify with your dealer
Track GaugeNot documented for this exact serial range — verify with your dealer
Ground ClearanceNot documented for this exact serial range — verify with your dealer

Performance

Travel Speed12.4 km/h (7.7 mph)
Dig Depth3.78 m (12.4 ft)
Bucket Capacity0.85 m³ (1.11 cu yd)
GradeabilityNot documented for this exact serial range — verify with your dealer

Service capacities (summary)

Fuel Tank340 L (89.9 gal)
Hydraulic System167 L (43.9 gal)
Engine OilNot documented for this exact serial range — verify with your dealer
Cooling SystemNot documented for this exact serial range — verify with your dealer

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

Komatsu SA6D102E-1B-C(S/N 26200467-UP) maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level and condition.
  • Check hydraulic fluid level at sight glass.
  • Check coolant level and ensure cap is secure.
  • Drain water from fuel separator.
  • Check air filter restriction indicator.
  • Inspect hydraulic hoses for cracks or leaks.
Every 250 h
  • Change engine oil and filter.
  • Grease all points (boom, stick, bucket, swing bearing).
  • Check fluid levels (engine, hydraulic, coolant).
  • Inspect belts and hoses for wear.
  • Check air filter outer element.
  • Perform visual walk-around inspection.
Every 500 h
  • Replace fuel filter.
  • Replace hydraulic return filter.
  • Test battery and alternator.
  • Test coolant SCA (Supplemental Coolant Additive).
  • Collect KOWA oil sample.
  • Measure undercarriage wear.
Every 1,000 h
  • Change final drive oil (both sides).
  • Inspect turbocharger.
  • Check valve adjustment.
  • Perform structural inspection (boom/stick welds).
  • Change hydraulic oil sample.
  • Clean or replace air filter outer element.
Every 2,000 h
  • Change hydraulic system oil.
  • Flush and replace coolant.
  • Change transmission oil and filter.
  • Replace worn belts and hoses.
  • Comprehensive brake system inspection.
  • Check swing machinery oil.

Servicing the SA6D102E-1B-C(S/N 26200467-UP) beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize Komatsu KOWA fluid analysis at every 500-hour interval to monitor engine wear metals (iron, copper, lead) and hydraulic contamination. Track coolant pH and SCA concentration to prevent liner cavitation in the SA6D102E-1B-C block. Monitor fuel dilution and soot levels in the engine oil to detect injector or piston ring wear early. Analyze hydraulic oil particle count and viscosity to assess pump and valve health. Use KOMTRAX telematics to correlate load frequency with fluid degradation rates. Early detection of silicon (dirt) or sodium (coolant) ingress prevents catastrophic component failure.

Corrective & Common Repairs

Address intermittent starting or random shutdowns by inspecting the engine controller power supply and sensor circuits. Replace worn fuel feed pumps and clogged water separators to prevent injector starvation. Repair hydraulic hose leaks and cracked clamps to maintain system pressure. Check and torque ROPS bolts and structural welds on the boom and stick to ensure safety compliance. Replace worn turbocharger components if boost pressure drops or excessive smoke occurs. Inspect the alternator and battery terminals for corrosion that causes electrical faults.

Overhaul & Rebuild Points

Perform inframe overhaul kits for the SA6D102E-1B-C when compression drops or oil consumption exceeds limits. Replace piston rings, liners, and bearings during major rebuilds to restore factory tolerances. Inspect the crankshaft and camshaft for wear during disassembly. Replace all gaskets and seals to prevent fluid leaks. Ensure proper valve adjustment and injector nozzle calibration to optimize combustion efficiency. Use Komatsu Genuine Lubricants with OEM-formulated additive packages during reassembly to protect new components.

Seasonal & Environment Servicing

In cold climates, check coolant glycol content and use Super-coolant AF-NAC to prevent freezing. Drain water from the fuel separator daily to avoid fuel line icing. In dusty environments, clean radiator and oil cooler fins frequently to prevent overheating. Inspect air filter elements more often and replace if restriction indicators trigger. Check undercarriage tension and track shoe condition for muddy or rocky terrain. Verify DEF levels and SCR system functionality for Tier 4 compliance in regulated regions.

SA6D102E-1B-C(S/N 26200467-UP) common service parts

Part numberPart
07281-00197Clamp,(With Pre-Fuel Filter)Check fitment →
6732-71-6111Filter, Fuel - SecondaryCheck fitment →
6732-21-5530Cartridge, Engine Oil FilterCheck fitment →
6735-51-5141Filter, Lubrication OilCheck fitment →
6735-51-5142Filter, Lubrication OilCheck fitment →

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

SA6D102E-1B-C(S/N 26200467-UP) fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
CA111Engine controller internal faultECM hardware failure or corrupted internal memoryInspect ECM power connections and grounds; replace or reprogram the ECM if faulty
CA115Engine crankshaft speed sensor and backup speed sensor failureFailed speed sensor, broken wiring, or corroded connectorReplace the speed sensor and verify voltage at the pin connector
CA122Intake air pressure sensor feedback voltage too highSensor malfunction or wiring short to powerVerify the intake pressure sensor operation and inspect wiring integrity
CA123Intake air pressure sensor feedback voltage too lowSensor short to ground or airflow restrictionCheck for a sensor short or inspect for airflow restrictions
CA441Battery voltage too lowWeak battery, failing alternator, or loose connectionsReplace the battery or alternator and check the voltage regulator
CA442Battery voltage too highAlternator overcharging or voltage regulator failureReplace the alternator or battery and check the voltage regulator
CA451Common rail pressure sensor feedback value too highFaulty rail pressure sensor or actual overpressure conditionDiagnose the fuel rail pressure sensor or inspect pump lines
CA452Common rail pressure sensor feedback value too lowFaulty rail pressure sensor or fuel supply issueDiagnose the fuel rail pressure sensor or inspect pump lines
CA234Engine overspeedThrottle calibration error, engine load cycle issue, or operator misuseVerify throttle calibration and inspect the engine load cycle
AA10NXAir cleaner cloggingDirty or blocked air filter elementReplace the air filter element

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

SA6D102E-1B-C(S/N 26200467-UP) attachments & work tools

Excavator Attachments

The SA6D102E-1B-C engine (S/N 26200467-Up) is primarily associated with the Komatsu PC200-6 and PC220-6 series hydraulic excavators. Typical bucket capacities for this class range from 1.0 to 1.7 cubic yards (0.76 to 1.30 cubic meters). Mounting systems utilize standard Komatsu quick couplers or fixed pin configurations depending on the specific boom and stick assembly installed.

Wheel Loader Attachments

This engine powers the WA320-3H wheel loader for serial ranges 20051 through 20560. Standard bucket sizes for this model typically range from 3.0 to 4.0 cubic yards (2.30 to 3.06 cubic meters). The machine utilizes a standard wheel loader quick-attach system compatible with Komatsu's proprietary coupler interface.

Bulldozer Attachments

The SA6D102E-1B-C engine is not listed for the D41E-6 or P-6 dozers in the provided serial data; those models utilize the SA6D102E-2 engine. Consequently, specific blade configurations (SE/SD/BL) and ripper options for the SA6D102E-1B-C are not documented in the source text.

Hydraulic System Requirements

Work tools for the PC200-6 and PC220-6 series require high-flow hydraulic circuits rated for approximately 5050 psi (34.8 MPa) with flow rates around 114.2 gallons per minute (432 liters per minute). Tool compatibility depends on the machine's auxiliary hydraulic valve configuration, which varies by factory build.

Factory Guarding Options

Factory configurations for the PC200-6 and PC220-6 series include optional FOPS/ROPS guards for the operator's station and heavy-duty undercarriage guards. Specific attachment guarding (e.g., bucket teeth guards or boom guards) is determined by the machine's original equipment specification and regional safety standards.

All SA6D102E-1B-C(S/N 26200467-UP) assemblies by section

Every catalogued assembly group for the Komatsu SA6D102E-1B-C(S/N 26200467-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Engine
Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Additional Pulley (Air Conditioner Pulley)
01***90Bolt,(For Large Fan)4
67***11Spacer1
67***10Pulley1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : After Cooler Water Piping (With Corrosion Resistor)(#26200467-26232197)
07***89Clamp,(For Japan)6
07***59Clamp - Drain Hose6
20***40Cover,(For Slag Handling)1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : After Cooler Water Piping (With Corrosion Resistor)(#26232198-)
07***89Clamp,(For Japan)6
20***40Cover,(For Slag Handling)1
67***41Hose1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Air Intake Heater
67***10Plug, Pipe (1/2-14 Npt)1
67***10Gasket, Intake Manifold Cover1
67***11Gasket, Int Manifold Cover1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Alternator (35a) (Brushless Type) (Inner Parts)(#26200467-26239398)
60***11Alternator A. (35a)1
KD***70Bushing,Insulate1
KD***50Regulator Ass'Y1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Alternator (35a) (Brushless Type) (Inner Parts)(#26239399-)
60***11Alternator A. (35a)1
KD***70Bushing,Insulate1
KD***50Regulator Ass'Y1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Alternator (35a) (Brushless Type)(#26200467-26239398)
(6***1)Alternator A. (35a),(See Fig.A601p-02a7z)1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Alternator (35a) (Brushless Type)(#26239399-)
(6***1)Alternator A. (35a),(See Fig.A601p-02a7z)1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Alternator (50a) (Inner Parts)(#26245808-)
60***10Alternator A. (50a)1
KD***70Bushing,Insulate2
KD***40Bushing,Insulate1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Alternator (50a)(#26245808-)
(6***0)Alternator A. (50a),(See Fig.A601p-02a4z)1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Alternator Bracket (35a Brushless Type)(#26200467-26239398)
01***30Bolt,(For Trimming Dozer)1
01***10Nut,(Without Air Conditioner)1
01***23Washer,(With Car Heater)3
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Alternator Bracket (35a Brushless Type)(#26239399-)
01***30Bolt,(For Trimming Dozer)1
01***10Nut,(Without Air Conditioner)1
01***23Washer,(With Car Heater)3
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Belt Tensioner (For 35a Alternator)
67***40Tensioner,Belt1
67***41Tensioner, Alternator Belt1
67***30Tensioner, Alternator Belt1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Boost Tube
04***08Clip1
07***12Gasket,Injection Pump Piping5
07***67Clamp, Hose2
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Breather Hose
01***25Bolt,(With Corrosion Resistor)1
07***20Clamp, Spring Hose1
07***42Hose1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Camshaft
67***20Support, Camshaft Thrust1
67***31Gear, Camshaft1
67***60Bolt (M8x1.25x22)2
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Caution Plate (Arabic)(#26201322-26258233)
09***08Plate? Instruction,Air Cleaner1
67***11Plate? Name1
67***60Plate? Name1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Caution Plate (Chinese)(#26200467-26260759)
Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Caution Plate (English)(#26201322-)
Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Caution Plate (Japanese-Emglish)(#26260760-)
Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Caution Plate (Japanese-English)(#26200467-26260759)
09***07Plate? Instruction,Air Cleaner1
09***08Plate? Instruction,Air Cleaner1
67***20Plate? Name1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Cooling Fan
01***30Bolt - Lower Oil Cooler Outlet Tubemounting4
01***35Bolt, Mount Bracket To Floor4
60***10Fan,(S6d105-1zz)1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Corrosion Resistor
01***16Bolt, Mount Solenoid Valve1
01***40Bolt,(Shim 3-Piece)4
01***80Bolt (M10-1.50x80)1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Crankshaft
67***50Gear, Crankshaft1
67***11Gear, Crankshaft1
67***10Crankshaft Ass'Y1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Cylinder Block(#26200467-26228573)
67***20Plug, Pipe (3/4 Nptf)1
67***30Plug, Pipe (1/8 Nptf)2
67***90Nozzle, Piston Cooling6
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Cylinder Block(#26228574-)
62***10Screw1
62***10Seal, O-Ring (M10-1.00)3
67***70Cylinder Block Ass'Y1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Cylinder Head(#26200467-26253953)
67***70Insert, Exhaust6
67***80Insert, Intake6
67***10Bolt, Mounting (M12x1.75x70)6
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Cylinder Head(#26201322-)
67***70Head Ass'Y1
67***10Retainer, Exhaust Valve Spring12
67***70Insert, Exhaust6
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Damper
67***20Bolt (M12x1.25x36)4
67***20Damper, Rubber Vibration1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Engine Front Support
67***10Support,Front1
67***20Bolt (M12-1.75x90)4
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Exhaust Connector Clamp
Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Exhaust Manifold
Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Exhaust Manifold And After Cooler(#26200467-26208641)
07***08Plug,(Without Auto Priming System)1
67***30Plug, Pipe (1/8 Nptf)3
67***10Clamp, Hose2
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Exhaust Manifold And After Cooler(#26208642-)
07***08Plug,(Without Auto Priming System)1
67***30Plug, Pipe (1/8 Nptf)3
67***10Clamp, Hose2
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Exhaust Manifold Gasket
67***30Bolt, Mounting (M10x1.50x65)12
67***20Gasket, Exhaust Manifold6
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Exhaust Pipe (Ordering Transferred Parts)(#26260760-)
01***11Nut (M14-1.50 Thd), Nut; Was 01582-014112
61***20Clamp1
61***50Pipe,Exhaust1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fan Drive Pulley
67***30Bearing,Roller1
67***70Bolt, Mounting (M8-1.25x40)4
67***20Support Ass'Y,Fan1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Flywheel Housing Plug And Spacer
01***50Stud12
01***25Bolt - Relay Mounting1
01***08Nut,R.H. Thread4
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Flywheel Housing(#26200467-26253953)
Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Flywheel Housing(#26253954-)
02***13Plug1
67***40Cover, Rear1
67***30Cover1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Flywheel(#26200467-26216556)
67***20Washer, Plain (M12)8
67***30Bolt (M12x1.25x32)8
67***80Gear, Flywheel Ring1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Flywheel(#26216557-)
67***20Washer, Plain (M12)8
67***30Bolt (M12x1.25x32)8
67***80Gear, Flywheel Ring1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Front Cover(#26200467-26239398)
67***40Pin, Timing1
67***50Ring, Retaining1
67***60Screw, Round Head (M5-0.80x17)2
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Front Cover(#26239399-)
67***40Pin, Timing1
67***50Ring, Retaining1
67***60Screw, Round Head (M5-0.80x17)2
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Front Gear Train Cover(#26200467-26264845)
67***80Gasket, Accessory Drive Cover1
67***10Plate, Accessory Drive Cover1
67***30Bolt, Flange Head (M12-1.75x25)2
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Front Gear Train Cover(#26264825-)
07***10O-Ring,(F4320-67a0 -4 )1
67***30Cover1
67***30Bolt, Flange Head (M12-1.75x25)2
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Filer Piping
07***12Gasket,Injection Pump Piping2
67***10Bolt, Banjo Connector (M12-1.50x24)1
67***30Screw, Banjo Connector (M12-1.50x24)1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Filter
67***40Bolt, (M8x1.25x35)2
67***10Cartridge,Fuel1
67***11Filter, Fuel - Secondary1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Injection Pump (Feed Pump) (Inner Parts)(#26200467-26208641)
DK***20Bolt, Joint1
DK***00Valve,Check2
DK***10Feed Pump Ass'Y,(Not Shown)1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Injection Pump (Feed Pump) (Inner Parts)(#26208642-)
DK***20Bolt, Joint1
DK***60Feed Pump Ass'Y1
DK***00Valve,Check2
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Injection Pump (Governor) (1/2) (Inner Parts)(#26200467-26208641)
DK***00Washer1
DK***00Shim? 2.00mm,(High Altitude Spec.)0
DK***00Shim1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Injection Pump (Governor) (1/2) (Inner Parts)(#26208642-)
DK***00Washer1
DK***00Shim? 2.00mm,(High Altitude Spec.)0
DK***00Shim1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Injection Pump (Governor) (2/2) (Inner Parts)(#26200467-26208641)
DK***00Gasket1
DK***40Gasket,Air Compressor2
DK***00Nut,Cap1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Injection Pump (Governor) (2/2) (Inner Parts)(#26208642-)
DK***00Gasket1
DK***40Gasket,Air Compressor2
DK***00Nut,Cap1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Injection Pump (Pump) (1/2) (Inner Parts)(#26200467-26208641)
67***20Injection Pump Ass'Y1
DK***30Bearing0
DK***20Shim, 1.40mm; Was Dk029311-7220, Shim? 1.4mm0
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Injection Pump (Pump) (1/2) (Inner Parts)(#26208642-)
67***21Injection Pump Ass'Y1
DK***50Pump Ass'Y1
DK***30Bearing0
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Injection Pump (Pump) (2/2) (Inner Parts)(#26200467-26208641)
DK***40Shim? 0.50mm, Shim, 0.50mm; Was Dk029311-00400
DK***90Shim? 0.25mm, Shim, 0.25mm; Was Dk029311-05900
DK***00Sleeve,Control6
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Injection Pump (Pump) (2/2) (Inner Parts)(#26208642-)
DK***40Shim? 0.50mm, Shim, 0.50mm; Was Dk029311-00400
DK***90Shim? 0.25mm, Shim, 0.25mm; Was Dk029311-05900
DK***00Sleeve,Control6
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Injection Pump And Oil Piping
07***12Gasket,(Without Air Compressor Type) (K2)5
07***10Screw, Banjo Connector (M10-1.25x20)1
61***40Nipple1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Injection Pump Mounting And Gear(#26265208-)
01***14Bolt - Fuel Sensor Mounting2
01***11Nut (M14-1.50 Thd), Nut; Was 01582-014111
61***61Washer, Plain (14mm)1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Injection Pump Mounting(#26200467-26265207)
01***14Bolt - Fuel Sensor Mounting2
01***11Nut (M14-1.50 Thd), Nut; Was 01582-014111
61***61Washer, Plain (14mm)1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Inlet Tube And Outlet Joint
01***40Bolt1
01***32Washer,(Not Used With Emergency Str.)1
07***40Hose,See Fig. K4010-05a01
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Return
01***16Bolt, Mount Solenoid Valve1
01***45Bolt,(Noise Abatement Part)2
01***60Bolt, Mount2
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Fuel Tube And Cylinder Block Blind Plate
07***12Gasket,Injection Pump Piping2
67***20Bolt, Flange (M8-1.25x20)2
67***10Screw, Banjo Connector (M12x1.50x24)1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Head Cover(#26200467-26206886)
67***30Bolt (M8x1.25x25)5
67***40Bolt (M8-1.25x25)1
67***81Gasket, Valve Cover6
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Head Cover(#26206887-)
67***30Bolt (M8x1.25x25)5
67***40Bolt (M8-1.25x25)1
67***50Washer, Plain (3/8 Inch)6
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Heat Shield(#26200467-26208655)
01***20Bolt,(Forwarded Individually Parts)4
01***30Bolt,(Water Separator Spec.)2
01***20Bolt, Hose Clamps (Inlet And Return Line Hoses)4
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Heat Shield(#26208656-)
01***20Bolt,(Forwarded Individually Parts)4
01***30Bolt,(Water Separator Spec.)1
01***60Bolt, Mounting1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Injection Nozzle(#26200469-26255462)
67***40Nozzle1
67***00Nozzle Holder Ass'Y6
67***50Seal, Rectangular Ring6
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Injection Nozzle(#26255463-)
67***20Injector1
67***40Nozzle1
67***00Nozzle Holder Ass'Y1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Injection Piping(#26200467-26249263)
67***80Seal, Grommet1
67***30Seal, Banjo Connector (6.2 mm)6
67***40Screw, Banjo Connector (M6x1.00x14.3)6
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Injection Piping(#26249264-)
67***80Seal, Grommet1
67***40Screw, Banjo Connector (M6x1.00x14.3)6
67***60Gasket,Injector - Spill12
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Muffler Bracket (For Chassis Mounting)
01***20Bolt,(Forwarded Individually Parts)2
41***70Bracket1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Oil Cooler And Oil Filter
67***50Valve, Pressure Relief1
67***51Valve, Pressure Relief1
67***30Plug, Pipe (1/8 Nptf)1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Oil Filler
01***30Bolt, Mounting - Front Hand Rails2
61***20Cap Assembly, Oil Fill Tube1
61***80Gasket, Oil Fill Cap1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Oil Gauge And Remote Oil Drain
01***12Bolt - Front Cover Mounting3
01***08Washer3
07***23O-Ring,(F4350-61a1b-29 )1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Oil Pan And Suction Tube(#26200467-26253953)
09***50Liquid Gasket, Lg-7, 150g0
67***70Plate, Clamping1
67***10Gasket (K2)1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Oil Pan And Suction Tube(#26253954-)
09***50Liquid Gasket, Lg-7, 150g0
67***70Plate, Clamping1
67***10Gasket (K2)1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Oil Pan Bolt(#26204449-)
67***60Bolt, Mounting (M8-1.25x25)3
67***10Bolt, Mounting (M8-1.25 X 25)33
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Oil Pressure Switch(#26200467-26217579)
67***30Cartridge, Engine Oil Filter2
67***40Switch,Oil Pressure1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Oil Pressure Switch(#26217580-)
08***05Switch,Engine Oil Pressure1
62***10Seal, O-Ring (M10-1.00)1
67***30Cartridge, Engine Oil Filter2
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Oil Pump(#26200467-26273534)
67***11Pump, Lubricating Oil1
67***20Bolt (M8x1.25x30)4
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Oil Pump(#26273535-)
67***11Pump, Lubricating Oil1
67***20Bolt (M8x1.25x30)4
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Piston
67***00Piston Ring Ass'Y6
67***10Pin, Piston6
67***20Ring, Retaining12
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Rear Hanger
01***30Bolt, Mounting - Front Hand Rails2
67***20Plate Hanger1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Repair Parts (1/4) (Cylinder Head)
67***40Gasket, Cylinder Head - 0.5mm Os1
67***70Gasket, Cylinder Head - 0.25mm Os1
67***51Gasket? 0.50mm,Head1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Repair Parts (2/4) (Cylinder Block)
67***10Bushing, Oversize (No. 1 Bore)1
67***20Bushing, Oversize (No. 2-5 Bore)1
67***10Sleeve, Salvage - Std Bore6
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Repair Parts (3/4) (Crankshaft)
67***00Main Metal Ass'Y6
67***00Main Metal Ass'Y6
67***00Main Metal Ass'Y6
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Repair Parts (4/4) (Piston)
67***00Piston Ring Ass'Y6
67***00Piston Ring Ass'Y6
67***20Piston? 0.5mm6
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Rocker Arm
67***70Screw, Slotted Set (3/8-24x1 1/2 Inch)2
67***40Bolt6
67***10Rod, Push12
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Spare Parts
67***81Gasket, Valve Cover6
67***10Gasket,Camfollower Cover Bolt6
67***70Belt,Alternator And Water Pump1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Starting Motor (5.5kw)
(6***0)Starting Motor Ass'Y,(5.5kw) (See Fig.A621p-02a1)1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Starting Motor (5.5kw) (Inner Parts)
60***10Starting Motor Ass'Y,(See Fig.A621p-02a1)1
ND***80Holder Ass'Y,Brush1
ND***00Brush Ass'Y2
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Starting Motor Mounting (5.5kw)(#26247493-)
01***30Stud1
01***35Bolt, Mount Bracket To Floor2
01***08Nut,See Fig. K4010-04a01
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Starting Motor Mounting(#26200467-26247492)
67***11Gasket,Starter1
67***20Bolt, Mounting (M10x1.50x35)3
67***10Bolt (M10x1.50x35)3
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Stop Solenoid
01***20Bolt,See Fig. K4010-11a02
01***70Screw2
01***20Bolt,(With Tachometer Outlet)2
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Tachometer Drive Cover
67***90Cover, Mechanical Tach Drive1
67***20Seal, Rectangular Ring1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Tappet
Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Tappet Cover(#26200467-26232115)
67***20Bolt, Mounting (M8-1.25x16)6
67***80Seal, Grommet6
67***60Cover, Push Rod1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Tappet Cover(#26232116-)
67***20Bolt, Mounting (M8-1.25x16)6
67***80Seal, Grommet6
67***60Cover, Push Rod1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Thermostat Housing
07***25Clip,(For Slag Handling)2
67***40Bolt, (M8x1.25x35)1
67***70Coupling, Plain Hose1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Thermostat(#26200467-26295857)
Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Thermostat(#26295858-)
Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Turbocharger Mounting(#26200467-26233079)
67***10Stud ((M10x1.50 (Both Ends) X42))4
67***20Nut (M10x1.50)4
67***30Gasket, Turbocharger Mounting1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Turbocharger Mounting(#26233080-)
67***10Stud ((M10x1.50 (Both Ends) X42))4
67***20Nut (M10x1.50)4
67***10Gasket, Turbocharger Mounting1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Turbocharger Oil Piping(#26200467-26238677)
67***80Connector, Male2
67***30O-Ring,Turbocharger Drain2
67***20Gasket1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Turbocharger Oil Piping(#26238678-)
07***59Clamp - Drain Hose2
62***90Gasket,Turbocharger Oil Drain1
67***50O-Ring,Turbocharger Drain1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Under Plate
67***50Plate1
67***51Plate, Cylinder Block Stiffener1
(0***0)Liquid Gasket, Lg-7, 150g0
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Water Connector
67***60Connection, Water Inlet1
67***10Connector1
67***20Bolt (M10-1.50x75)3
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Water Connector Plug
Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Water Pump (With Hardeing Pulley)(#26200467-26279456)
67***60Bolt (M8x1.25x22)2
67***00Water Pump Ass'Y1
67***01Water Pump Ass'Y1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Water Pump(#26279457-)
67***60Bolt (M8x1.25x22)2
67***02Water Pump Ass'Y1
67***20Seal, Rectangular Ring1
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Komatsu : Sa6d102e-1b-C(S/N 26200467-Up) : Engine : Water Temperature Sensor

SA6D102E-1B-C(S/N 26200467-UP) serial number reference

The PIN plate is located on the right-hand side of the cab on the lower frame, typically just behind the front idler or beneath the operator's window. The prefix is the first three digits of the 17-character ISO PIN stamped on this plate.

PrefixIdentifies
262SA6D102E-1B-C

Frequently asked questions

What is the engine type for the Komatsu SA6D102E-1B-C?

It is a turbocharged, aftercooled inline-six diesel engine from the Komatsu 102 series, producing approximately 160 hp (119 kW) at 2100 rpm.

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

The WA320-3H wheel loader typically has an operating weight of approximately 34,500 lb (15,648 kg), though this varies by configuration and attachment package.

What engine replaced the SA6D102E-1B-C in later models?

Later WA320-8 models transitioned to the SAA6D114 series engine to meet stricter emissions standards and provide increased power output.

What SA6D102E-1B-C(S/N 26200467-UP) owners discuss

What are the known powertrain and hydraulic behaviors for the Komatsu SA6D102E-1B-C engine series?
The SA6D102E-1B-C engine is a turbocharged, aftercooled diesel unit. Community consensus indicates that Komatsu hydraulic systems are generally smooth and fuel-efficient compared to early dash-6 competitors. A critical powertrain behavior is the interdependence of the hydraulic pump and engine; if the main hydraulic pump fails, the engine is often damaged shortly thereafter. This linkage is a primary driver of reduced resale value for this machine line. Operators note that the engine and hydraulic system must be diagnosed together, as hydraulic load directly impacts engine RPM under heavy digging loads. Variations in pump and valve combinations exist across the series, requiring specific configuration checks rather than generic assumptions. Have your dealer verify the specific pump control calibration for this serial range.
What undercarriage and wear patterns are typical for machines powered by this engine?
Machines equipped with the SA6D102E-1B-C engine, such as the WA320-3H wheel loader, exhibit wear patterns consistent with heavy earthmoving duty cycles. The undercarriage is subject to rapid wear if track tension is not maintained, leading to repeated loosening. Operators report that mud or debris packed into the undercarriage can cause one track to run slower than the other, mimicking hydraulic faults. The machine is designed to wear out components simultaneously; therefore, significant undercarriage wear often coincides with major powertrain or hydraulic service intervals. Ground pressure and track shoe width significantly affect wear rates. Have your dealer verify the current undercarriage measurement against factory wear limits.
What are the specific quirks of the SA6D102E-1B-C engine series compared to related variants?
The SA6D102E-1B-C (S/N 26200467-UP) is distinct from the SA6D102E-1-GD and SA6D102E-1C variants. It is a 6-cylinder inline, water-cooled engine with a water-cooled aftercooler. Unlike the Cummins L10 which suffered from piston ring issues at low hour counts, the Komatsu 102 series is noted for hardened liners and high-alloy rings, offering superior durability. The SA6D102E-1B-C uses a Bosch-style fuel system with injector pressures around 3,200 PSI, differing from older PT systems. It is specifically applied to the WA320-3H wheel loader in the specified serial range. Performance characteristics vary by configuration and series, particularly regarding emissions packages and turbocharger mapping. Have your dealer verify the exact turbocharger model and emissions tier for this serial number.
What are the common electrical and sensor issues reported for this machine type?
Komatsu excavators and wheel loaders with this engine rely heavily on electronic control systems. Common issues include intermittent starting, dashboard failures, and random shutdowns triggered by unstable power supplies or faulty sensors. Multiple fault codes often appear simultaneously due to a single sensor failure or ground issue. Specific codes such as E10 (engine controller power failure) and E11 (engine control failure) indicate critical electrical faults. The EPC (Electronic Power Control) system is sensitive to voltage drops. Operators report that checking battery state of charge and chassis grounds is the first step before diagnosing engine performance issues. Have your dealer verify the integrity of the main engine harness and ground connections.
What should be checked when buying a used machine with the SA6D102E-1B-C engine?
When inspecting a used machine with the SA6D102E-1B-C engine (S/N 26200467-UP), verify the exact engine serial number against the WA320-3H application guide. Check the hydraulic oil condition and temperature behavior; weak performance when hot indicates internal leakage in pumps or valves. Inspect the cooling package for packed debris between the radiator, hydraulic oil cooler, and charge-air cooler. Test the engine under load to ensure it does not drop heavily in RPM when hydraulics are engaged. Check for fault codes related to the EPC system and fuel delivery. Verify the condition of the turbocharger and aftercooler cores. Have your dealer verify the engine compression and hydraulic pressure specifications against factory standards.
How does the SA6D102E-1B-C engine handle cooling and overheating issues?
The SA6D102E-1B-C engine operates in a cooling system that includes a radiator, hydraulic oil cooler, and charge-air cooler. Overheating is often caused by material packed between these heat exchangers rather than internal engine failure. If temperature rises during heavy work but falls during idle, the cooling capacity may be marginal. Coolant expulsion or high system pressure after a cold start indicates deeper engine issues. The engine is designed to run at specific operating temperatures; deviations often signal thermostat or water pump failure. Have your dealer verify the cooling system pressure and thermostat operation.
What are the maintenance intervals and fluid specifications for the SA6D102E-1B-C engine?
Komatsu recommends specific maintenance intervals for the SA6D102E-1B-C engine, including hydraulic oil and system servicing, engine final-drive, and swing-system fluids. The manufacturer describes these service items through its official Komatsu Care maintenance program. Fluid specifications include Komatsu EO engine oil and Komatsu TO hydraulic oil. Coolant specifications include Super-coolant AF-NAC. Maintenance intervals vary by configuration and series, depending on operating conditions and duty cycles. Regular inspection of fuel filters and water separators is critical to prevent injector wear. Have your dealer verify the current service interval hours and fluid capacity for this specific machine configuration.

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

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