Komatsuengine(no series)

Komatsu SAA6D114E-2A-A(S/N 26800003-UP)

Maintenance schedule, common problems & OEM parts breakdown

The Komatsu SAA6D114E-2A-A engine (S/N 26800003-UP) is a heavy-duty, inline 6-cylinder, 4-stroke diesel powerplant used in the PC300-7 and PC300LC-7 hydraulic excavator series. This mid-size machine class operates in the 20,000 to 60,000 lb weight range and was produced during the late 2000s to early 2010s. The SAA6D114E-2A-A succeeded the SA6D114E-1 series and was later replaced by the SAA6D114E-3 series in the PC300LC-8 generation. Configurations included standard and long-reach boom setups, with the engine delivering approximately 196 hp at 2050 rpm.

Across generations, the SAA6D114E-2A-A introduced a more robust turbocharging and aftercooling system compared to its predecessor, improving thermal efficiency and durability in severe construction environments. The machine remains highly relevant in the used and parts market due to the widespread availability of the 8.27L platform architecture, which shares core components with the Cummins QSC8.3. Its continued presence in the secondary market is driven by the extensive ecosystem of Komatsu CARE maintenance programs and the availability of high-quality remanufactured engine assemblies and overhaul kits.

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 SAA6D114E-2A-A(S/N 26800003-UP) specifications

Engine

ModelSAA6D114E-2A-A
Series/GenerationSAA6D114E-2A-A (Build 9D)
ConfigurationInline 6-cylinder, 4-stroke diesel, Air-to-Air Aftercooled (SAA), turbocharged, common rail direct injection
Displacement8.27 L (505 cu in)
Bore114 mm (4.49 in)
Stroke135 mm (5.31 in)
Gross Power170–194 kW (227–260 hp) at 1900–2200 rpm (varies by application)
Net Power192 kW (257 hp) at 1950 rpm (ISO 9249)
Emissions TierTier 2 / Stage II

Weights

Operating WeightNot documented for this exact serial range — verify with your dealer
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 SpeedNot documented for this exact serial range — verify with your dealer
GradeabilityNot documented for this exact serial range — verify with your dealer
Digging/Dumping ForceNot documented for this exact serial range — verify with your dealer

Service Capacities (Summary)

Fuel TankNot documented for this exact serial range — verify with your dealer
Hydraulic SystemNot documented for this exact serial range — verify with your dealer
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 SAA6D114E-2A-A(S/N 26800003-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.
  • Check fuel level and drain water from separator.
  • Check DEF level on Tier 4 machines.
  • Check air filter restriction indicator.
Every 250 h
  • Change engine oil and filter.
  • Grease all points on boom, stick, bucket, and swing bearing.
  • Check fluid levels across all systems.
  • Check air filter outer element.
  • Inspect belts, hoses, and clamps.
  • Perform visual walk-around inspection.
Every 500 h
  • Replace fuel filter and drain water separator.
  • Replace hydraulic return filter.
  • Perform battery load test and service terminals.
  • Test coolant SCA concentration.
  • Collect KOWA engine oil sample.
  • Perform detailed undercarriage visual inspection.
Every 1,000 h
  • Replace air filter outer element.
  • Change final drive oil on both sides.
  • Inspect turbocharger condition.
  • Check valve adjustment clearances.
  • Perform structural inspection of boom and stick welds.
  • Measure undercarriage wear components.
Every 2,000 h
  • Change hydraulic system oil.
  • Flush and replace coolant.
  • Change swing machinery oil.
  • Perform comprehensive component evaluation.
  • Inspect and replace worn belts and hoses.
  • Check KDPF status (typically at 4,500 hr intervals).

Servicing the SAA6D114E-2A-A(S/N 26800003-UP) beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize the KOWA (Komatsu Oil Wear Analysis) program at every 500-hour interval to monitor engine oil, hydraulic fluid, and coolant health. Analyze samples for wear metals such as iron, copper, and lead, and identify contaminants like silicon (dirt) or sodium (coolant). Regular sampling detects fuel dilution, soot levels, and viscosity changes early. This data allows for proactive scheduling of oil changes and component replacements before catastrophic failure occurs, ensuring the SAA6D114E-2A-A powertrain remains within optimal operating parameters.

Corrective & Common Repairs

Address common SAA6D114E-2A-A failures by inspecting the turbocharger and fuel injectors during the 1,000-hour service. Check for coolant leaks around the head gasket and water pump seals, which are frequent failure points in this 8.27L platform. Inspect the air intake system for blockages that cause excessive soot accumulation. Replace worn belts and hoses during the 2,000-hour service to prevent sudden breakdowns. Monitor the EPC solenoid valves for electrical faults that may trigger output reduction codes.

Overhaul & Rebuild Points

Major overhaul milestones for the SAA6D114E-2A-A include the 2,000-hour hydraulic oil change and coolant flush. Critical rebuild focus areas involve the swing machinery, final drives, and engine components such as the turbocharger and injectors. Use out-of-frame overhaul kits for piston rings, bearings, and gaskets when compression drops or oil consumption increases. Verify crankshaft center and flywheel housing rear surface dimensions during major engine disassembly to ensure proper alignment and prevent premature wear.

Seasonal & Environment Servicing

In cold climates, ensure the Super-coolant AF-NAC concentration is adequate to prevent freezing and maintain proper SCA levels. Drain water from the fuel separator daily to prevent ice formation in the fuel lines. In dusty environments, check the air filter restriction indicator more frequently and clean the radiator and oil cooler fins to prevent overheating. Verify the integrity of the ROPS/FOPS structure and tighten all structural bolts during the 1,000-hour inspection to maintain cab safety and operator comfort.

SAA6D114E-2A-A(S/N 26800003-UP) common service parts

Part numberPart
07281-00197Clamp,(With Pre-Fuel Filter)Check fitment →
600-311-8321Cartridge,Fuel FilterCheck fitment →
6114-71-6210Head, Fuel FilterCheck fitment →
6151-71-7201Filter Assembly, FuelCheck fitment →
600-311-9101Fuel Filter Ass'YCheck fitment →

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

SAA6D114E-2A-A(S/N 26800003-UP) fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
CA115Engine crankshaft speed sensor and backup speed sensor failureBroken sensor, wiring issue, or connector corrosionReplace the speed sensor and verify the voltage at the pin connector
CA111Internal engine controller faultECM hardware or software failureReplace or reprogram the ECM
CA451Common rail pressure sensor feedback value too highMalfunction in the rail sensor or actual overpressure conditionDiagnose the fuel rail pressure sensor or pump lines
CA234Engine overspeedThrottle calibration error, engine load cycle issue, or operator misuseVerify throttle calibration and engine load cycle
CA441Battery voltage too lowAlternator failure, battery degradation, or voltage regulator issueReplace the alternator or battery; check the voltage regulator
CA442Battery voltage too highAlternator overcharging or voltage regulator failureReplace the alternator or battery; check the voltage regulator
CA122Intake air pressure high voltageIntake pressure sensor malfunction or wiring issueVerify the intake pressure sensor and wiring
CA123Intake air pressure low voltageSensor short or airflow restrictionCheck for a sensor short or an airflow restriction
CA153Intake air temperature sensor feedback voltage too highIntake air temperature (IAT) sensor failureReplace or test the IAT sensor
CA154Intake air temperature sensor feedback voltage too lowIntake air temperature (IAT) sensor failureReplace or test the IAT sensor

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

SAA6D114E-2A-A(S/N 26800003-UP) attachments & work tools

Excavator Attachments

The SAA6D114E-2A-A engine (S/N 26800003-UP) powers the PC300-7 and PC300LC-7 excavator series. Typical work tools include standard digging buckets, trenching buckets, and heavy-duty rock buckets. Factory configurations for this class often include quick coupler systems and various tooth styles (e.g., wedge, bolt-on) to match ground conditions. Hydraulic flow requirements for auxiliary circuits (e.g., tilt rotators) depend on the specific machine's hydraulic kit configuration.

Wheel Loader Attachments

This engine is used in the WA380-5 and WA430-5 wheel loader models. Primary work tools include general-purpose buckets, light material buckets, and heavy-duty rock buckets. Mounting systems typically utilize a standard skid-steer style quick attach or a proprietary Komatsu quick coupler. Hydraulic kit arrangements must support the loader's lift arms and auxiliary circuits for grapples or forks if equipped.

Motor Grader Attachments

The SAA6D114E-2A-A engine is installed in the GD655-3 and GD675-3 motor graders. Standard work tools include the moldboard (blade) with straight or angle configurations, and various ripper configurations for the rear. Factory guarding options may include side cutters, wing extensions, and blade wear strips. Hydraulic arrangements control the moldboard lift, tilt, and angle functions.

Crawler Carrier Attachments

The CD110R-2 crawler carrier utilizes this engine for industrial applications. Work tools are specialized for material handling, such as grapples, clamshell buckets, or specialized forks. Mounting is typically via a fixed frame or a heavy-duty quick coupler system designed for high-load cycles. Hydraulic systems are configured for high-flow operations required by grapple or clamshell mechanisms.

Industrial/Power Generation Options

The engine is used in mobile crushers and stationary power units. For mobile crushers, work tools include crushing chambers and screen decks. For power generation, the configuration involves alternator mounting and control panels. Factory guarding options include sound attenuation enclosures and exhaust silencing systems to meet emission and noise regulations.

All SAA6D114E-2A-A(S/N 26800003-UP) assemblies by section

Every catalogued assembly group for the Komatsu SAA6D114E-2A-A(S/N 26800003-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Engine
Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Accessory Pulley
Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Accessory Pulley (Sandy And Dusty Spec.)
Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Air Cleaner
60***50Valve, Vacuator1
60***10Cover Assembly1
60***70O-Ring,Seal1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Air Connector
13***H1Gasket (K1)1
67***12Gasket, Connection1
67***30Bolt, Hex Cap (M8-1.25x30)1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Air Intake Cover
13***H1Cover1
67***30Bolt, Hex Cap (M8-1.25x30)11
67***10Gasket, Intake Manifold Cover1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Air Intake Heater
67***12Gasket, Connection1
67***20Heater, Engine1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Air Transfer Connection
12***H1Plug1
13***H1Pipe,Air1
67***70O-Ring,Turbocharger Connector1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Alternator (35a)
(6***1)Alternator A. (35a),(See Fig.A601p-02a7z)1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Alternator (35a) (Inner Parts)
60***11Alternator A. (35a)1
KD***70Bushing,Insulate1
KD***50Regulator Ass'Y1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Alternator (60a)
Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Alternator (60a) (Inner Parts)
60***10Alternator A. (60a)1
KD***70Bushing,Insulate2
KD***40Bushing,Insulate1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Alternator Mounting
01***30Bolt,(For Trimming Dozer)1
01***20Bolt, Hose Clamps (Inlet And Return Line Hoses)1
01***55Bolt, Mount Dryer To Bracket And Frame2
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Boost Tube
07***12Gasket,Injection Pump Piping3
13***H1Stud1
62***30Banjo Fitting1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Breather And Hose
01***23Washer, Wiring Harness Mounting Bracket1
04***08Clamp, Hose2
07***89Clamp,(For Japan)2
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Breather Cover (Cylinder Block)
67***10Bolt6
67***10Plate, Cover1
67***30Gasket, Breather1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Cabin Heater Plug
67***10Plug, Pipe (1/2-14 Npt)1
67***20Plug, Pipe (3/4 Nptf)2
67***80Plug, Expansion2
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Camshaft
67***20Support, Camshaft Thrust1
67***60Bolt (M8x1.25x22)2
67***80Key, Plain Woodruff (4.0mm)1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Coolant Heater Plug
Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Coolant Ventilator
67***50Tee, Street Pipe1
67***30Plug, Pipe (1/8 Nptf)1
67***60Cock1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Cooling Fan(#26800003-26800385)
01***30Bolt - Lower Oil Cooler Outlet Tubemounting6
01***45Bolt, Bracket Mounting4
20***10Spacer1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Cooling Fan(#26800386-)
01***30Bolt - Lower Oil Cooler Outlet Tubemounting6
01***45Bolt, Bracket Mounting4
20***40Spacer1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Corrosion Resistor(#26800007-)
01***35Bolt, Mount Bracket To Floor2
01***75Bolt (M10-1.50x75)1
04***10Clip,See Fig. K4010-17a02
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Crank Pulley
67***20Bolt (M12x1.75x30)4
67***20Pulley1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Crankshaft
67***50Gear, Crankshaft1
67***70Crankshaft Assembly1
67***90Gear, Crankshaft1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Cylinder Block
62***10Screw1
62***10Seal, O-Ring (M10-1.00)1
62***50Draincock (1/4 Nptf)1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Cylinder Block Gasket Kit
07***12Gasket,(Without Air Compressor Type) (K2)4
07***12Gasket,(Without Air Compressor Type) (K1)2
07***16Gasket,(For Pc750-6) (See Fig.A2110)1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Cylinder Head
12***H1Plug,Expansion1
12***H1Intake Valve Ass'Y6
13***H1Insert,Valve6
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Cylinder Head Gasket Kit
07***12Gasket,Injection Pump Piping3
13***H1Gasket (K1)1
61***90O-Ring,Breather1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Damper
67***90Bolt (M14-1.50x35)4
67***89Damper, Vibration1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Engine Support
01***32Washer,(Not Used With Emergency Str.)8
04***28Pin, Dowel - Transmission Case, Pin-Dowel1
20***10Bracket,L.H1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Exhaust Connector Clamp
Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Exhaust Manifold
67***10Gasket, Exhaust Manifold6
67***90Manifold,Exhaust1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Exhaust Manifold Mounting
01***32Washer,(With Auto Emergency Steering)12
67***50Screw4
67***40Bolt, Hex Cap (M10-1.50x70)8
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Fan Drive Pulley
01***75Bolt (M10-1.50x75)1
01***85Bolt,(For Reversible Fan)1
01***95Bolt,(For Shipping)1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Fan Drive Tensioner
01***20Bolt2
67***90Bolt (M10-1.50x75)1
67***19Tensioner, Belt1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Flywheel
67***00Flywheel Ass'Y1
67***80Gear,Ring1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Flywheel Housing
67***20Plug, Pipe (3/4 Nptf)1
67***10Seal,Oil (K2)1
67***50Plug, O-Ring1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Flywheel Mounting Parts
67***20Washer, Plain (M12)8
67***30Bolt (M12x1.25x32)8
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Front Cover
01***16Washer,Radio Controlled Slag Handling1
04***08Clip1
07***12Gasket,(Without Air Compressor Type) (K2)4
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Front Dast Seal
Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Front Gear Train Cover
67***30Bolt, Flange Head (M12-1.75x25)2
67***20Plate, Cover1
67***30Gasket, Hydraulic Pump1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Fuel Filter
01***25Bolt, Mount Engine Oil Drain To Fuel Tank2
01***35Bolt, Mount Bracket To Floor2
01***45Bolt, Bracket Mounting2
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Fuel Filter Piping(#26800425-)
01***50Stud Bolt2
01***23Washer, Wiring Harness Mounting Bracket2
07***12Gasket,Injection Pump Piping2
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Fuel Injection Piping
67***20Bolt, Captive Washer Cap (M5-0.80x24.5)9
67***10Bracket,Tube4
67***20Isolator, Vibration8
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Fuel Injection Pump
Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Fuel Injection Pump Mounting
01***85Screw2
01***16Bolt - Starting Motor Ground Cable1
01***40Bolt,(Shim 3-Piece)4
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Fuel Inlet Hose
07***12Gasket,(Without Air Compressor Type) (K2)2
13***H1Screw,Joint1
67***90Elbow, Plain Union1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Fuel Inlet Joint
07***12Gasket,(Without Air Compressor Type) (K1)2
61***10Connector, Banjo1
67***20Screw, Banjo Connector (M14x1.50x26)1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Fuel Transfer Pump
07***12Gasket,Injection Pump Piping2
13***H1Screw2
67***10Screw, Banjo Connector (M12x1.50x24)1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Hanger
67***30Bolt, Flange Head (M12-1.75x25)4
67***50Bracket, Lifting1
67***60Bracket, Lifting1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Head Cover
12***H1Screw6
67***50Washer, Plain (3/8 Inch)6
67***10Gasket,Camfollower Cover Bolt6
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Heat Shield
01***16Bolt, Mount Solenoid Valve2
01***20Bolt,(Forwarded Individually Parts)12
01***55Screw2
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Heat Shield(#26800327-)
01***16Bolt, Mount Solenoid Valve2
01***20Bolt,(Forwarded Individually Parts)12
01***55Screw2
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Injection Nozzle
67***60Gasket,Injector - Spill2
67***40Retainer, Injector Nozzle1
67***70Disc, Intermediate1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Injection Tube Cover
Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Muffler
01***20Bolt, Hose Clamps (Inlet And Return Line Hoses)1
01***25Bolt, Mount Engine Oil Drain To Fuel Tank1
01***25Bolt,L.H. (For Add. Air Compressor)4
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Muffler Tube
Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Oil Cooler
67***90Seal (K2)1
67***80Filter1
67***90Filter1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Oil Filler
07***09Clamp,(See Fig. K0210-16a0)2
61***10Cap, Oil Filler1
61***30Tube, Oil Filler1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Oil Filter And Piping
20***11Bracket1
67***40Plug, Pipe (3/8 Nptf)1
67***20Bolt (M10-1.50x25)4
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Oil Level Gauge
12***H1Plate1
67***30Cartridge, Engine Oil Filter1
67***10Nut1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Oil Level Sensor
01***16Bolt - Starting Motor Ground Cable1
01***20Bolt, Hose Clamps (Inlet And Return Line Hoses)1
01***08Nut,See Fig. K4010-04a01
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Oil Pan And Suction Tube
01***20Bolt, Hose Clamps (Inlet And Return Line Hoses)1
07***16Gasket,(For Pc750-6) (See Fig.A2110)1
13***H1Plate1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Oil Pump
67***20Bolt (M8x1.25x30)4
67***10Pump, Lubricating Oil1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Piston
12***91Connecting Rod Ass'Y6
12***92Piston Ring A.,Piston1
13***H1Screw2
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Plug (Torque Converter Cooling)
Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Pre-Fuel Filter
07***12Gasket,Mechanical Pump Piping1
60***01Fuel Filter Ass'Y1
60***21Cartridge,Fuel Filter1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Repair Parts (1/2) (Crankshaft)
12***92Seal Ass'Y,Front1
67***40Kit, Rear Crank Sleeve (Dry Flywheel)1
67***50Sleeve,Dry1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Repair Parts (2/2) (Piston)
67***10Bearing, Rod Half - 0.25mm Oversize12
67***20Bearing, Rod Half - 0.50mm Oversize12
67***30Bearing, Rod Half - 0.75mm Oversize12
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Revolution Sensor
01***16Bolt - Starting Motor Ground Cable1
08***10Bracket, Bucket Position Sensor1
78***30Sensor,Engine Revolution1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Rocker Arm
67***50Rivet2
67***50Nut, Heavy Hexagon (3/8 - 24 Unf)1
67***60Screw, Rocker Lever Adjusting1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Solenoid
67***50Bolt (M10-1.50x25)1
67***60Bolt, Mounting (M8-1.25x25)1
67***40Nut, Lock (M5x0.8xthd)1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Solenoid Mounting
01***12Bolt,(With Speedometer)2
01***16Bolt - Starting Motor Ground Cable1
04***10Clip1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Spare Parts
60***21Cartridge,Fuel Filter1
67***10Gasket,Camfollower Cover Bolt6
67***30Belt,Water Pump1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Starter Motor (11kw)
60***11Starting Motor Ass'Y,(11kw)1
(6***0)Starting Motor Ass'Y,(11kw) (See Fig.A621p-02a2)1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Starter Motor (11kw) (Inner Parts)
60***10Starting Motor Ass'Y,(11kw)1
KD***40Spring,Spring4
KD***40Front Bracket Ass'Y1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Starter Motor (7.5kw)
60***11Starting Motor Ass'Y,(7.5kw)1
(6***0)Starting Motor Ass'Y,(7.5kw) (See Fig.A621p-02a0)1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Starter Motor (7.5kw) (Inner Parts)
60***10Starting Motor Ass'Y,(7.5kw)1
KD***60Shift Lever Assembly1
KD***40Spring,Spring4
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Starter Motor Mounting
01***40Bolt,(For Operator'S Cab)3
62***10Gasket,(See Fig.A6210)1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Thermostat
Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Turbocharger
62***90Gasket,Turbocharger Oil Drain1
67***10Stud ((M10x1.50 (Both Ends) X42))2
67***20Nut (M10x1.50)4
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Turbocharger Oil Piping
04***10Clip,See Fig. K4010-17a01
07***67Clamp, Hose2
13***91Connection Ass'Y,Oil Drain1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Water Inlet Connection
67***20Bolt, Flange (M8-1.25x20)2
67***30Gasket, Connection1
67***90Tube1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Water Outlet Connection
67***60Bolt, Mounting (M8-1.25x25)2
67***30Connection, Water Outlet1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Water Pump
67***20Seal (K2)1
67***30Water Pump Ass'Y1
67***10Bolt, Hex Flange3
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Water Pump Drive Belt
Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Water Pump Drive Tensioner
67***90Bolt (M10-1.50x75)1
67***19Tensioner, Belt1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Water Temperature Sensor And Oil Pressure Switch
01***14Bolt - Fuel Sensor Mounting1
01***08Nut,See Fig. K4010-04a01
04***10Clip,(F4320-51a0 -8 )1
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Komatsu : Saa6d114e-2a-A(S/N 26800003-Up) : Engine : Wiring Harness
01***12Bolt,(See Fig. K0210-16a0)2
01***12Bolt,(With Speedometer)1
01***14Bolt,(W/Joy Stick Str.)(W/O Heater)1
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SAA6D114E-2A-A(S/N 26800003-UP) serial number reference

The PIN plate is riveted to the right-hand side of the cab on the lower frame, typically just behind the front idler or beneath the operator's window. The 3-character prefix is the model code (e.g., PC, WA, GD) located at the start of the machine model designation on the plate.

PrefixIdentifies
PC300-7W1 / LC-7-W1
PC300LC-7HD-7
PC350-7Standard
PC350LC-7LC
WA380-5Standard
WA430-5Standard
GD655-3Standard
GD675-3Standard
BR380JG-1Mobile Crusher
CD110R-2Crawler Carrier

Frequently asked questions

What is the engine type and displacement?

The Komatsu SAA6D114E-2A-A is a heavy-duty, inline 6-cylinder, 4-stroke diesel engine with a displacement of 8.27 Liters (505 cu in). It features a bore of 114 mm (4.49 in) and a stroke of 135 mm (5.31 in).

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

The operating weight varies by configuration and series. For the PC300-7 and PC300LC-7 excavators equipped with this engine, the weight typically ranges from 20,000 to 60,000 lbs depending on the boom, stick, and counterweight setup.

What engine replaced the SAA6D114E-2A-A?

The SAA6D114E-2A-A was succeeded by the SAA6D114E-3 series engine. This transition occurred with the introduction of the PC300LC-8 hydraulic excavator series, which featured updated emissions compliance and refined powertrain components.

What SAA6D114E-2A-A(S/N 26800003-UP) owners discuss

What are the known powertrain and hydraulic behaviors for machines using the SAA6D114E-2A-A engine?
Machines equipped with this engine, such as the PC300-7 and WA380-5, are noted for smooth operation and high fuel efficiency. A common industry observation is that the hydraulic pump and engine wear patterns are linked; if the hydraulic pump fails, the engine is often near the end of its service life. This synchronized wear contributes to lower resale values for these units. The hydraulic system is sensitive to temperature, with performance dropping significantly when hot due to internal leakage if oil viscosity degrades or components wear. Owners report that slow movements or loss of power under load often stem from airflow restrictions or fuel delivery issues rather than immediate engine failure. The line is generally designed to wear out complete machines simultaneously rather than individual components failing in isolation.
What undercarriage or wear patterns are typical for this machine type?
Operators report that the Komatsu PC300-7 and similar models often exhibit undercarriage wear that coincides with major powertrain failures. The track tension and roller conditions are critical diagnostic points; a machine pulling to one side may have mechanical resistance or debris packed into the undercarriage rather than a hydraulic travel motor failure. Testing travel speed in both forward and reverse directions helps isolate hydraulic issues from mechanical binding. The general consensus among owners is that the undercarriage and final drives are designed to fail alongside the engine and hydraulic pumps, making early undercarriage replacement a costly investment if the powertrain is not addressed concurrently.
What are the engine quirks per the SAA6D114E-2A-A series?
The SAA6D114E-2A-A is an inline 6-cylinder, 4-stroke diesel engine sharing architecture with the Cummins QSC8.3 platform. It features a displacement of 8.27 Liters (505 cu in) with a bore of 114 mm (4.49 in) and a stroke of 135 mm (5.31 in). A specific quirk noted in related 114E series engines is susceptibility to knocking sounds caused by worn-out bearings or fuel injection system irregularities. Overloading the engine or cooling system failure can cause parts to expand and create knocking noises. The engine is prone to power loss under heavy digging loads if air filters, fuel filters, or charge-air hoses are restricted. Owners should monitor for intermittent starting or random shutdowns, which often indicate unstable power supply or faulty sensors rather than core engine mechanical failure.
What are common electrical or sensor issues reported by owners?
Komatsu excavators rely heavily on electronic control systems; a single faulty sensor or unstable power supply can trigger multiple warning signals. Common electrical issues include intermittent starting, dashboard failures, and random machine shutdowns. Owners report that battery voltage may appear acceptable until the starter is loaded; a proper load and voltage-drop test is recommended before replacing starters. Ground connections between the engine and chassis are critical points of failure. Multiple fault codes often point to battery health, ground integrity, or connector issues rather than individual component failures. The electronic control strategy is model-specific, so diagnosing electrical faults requires identifying the exact machine generation and serial range.
What should be checked when buying a used machine with the SAA6D114E-2A-A engine?
Verify the exact serial prefix and engine serial number, as the SAA6D114E-2A-A applies to specific ranges (e.g., S/N 26800003-UP for PC300-7/WA380-5 variants). Check hydraulic oil condition and temperature behavior; weak performance when hot indicates internal leakage. Inspect the cooling package for packed debris between heat exchangers. Test travel speed in both directions to isolate hydraulic vs. mechanical issues. Check for knocking sounds, which may indicate worn bearings or fuel injection problems. Verify the battery load capacity and ground connections. Review the maintenance history for fuel and air filter changes. Confirm the exact attachment package and regional emissions configuration, as these affect weight, reach, and fuel use. Always consult the official OEM service manual for the specific serial range before purchase.
What are the critical safety considerations for engine diagnosis and repair?
Proper service and repair are extremely important for safe machine operation. Some techniques require tools specially designed by Komatsu for specific purposes. Always follow the safety protocols outlined in the factory shop manual for the SAA6D114E-2A-A series. Ensure the engine is shut down and cooled before inspecting for coolant leaks or oil contamination. Use correct fluid specifications: Komatsu EO engine oil, Komatsu TO hydraulic oil, and Super-coolant AF-NAC. Do not operate the engine outside recommended parameters to avoid voiding warranties or causing catastrophic failure. Have your dealer verify any safety-critical repairs or component replacements.

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

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