Komatsuengine(no series)

Komatsu KT-2300-1(S/N 103559-UP)

Maintenance schedule, common problems & OEM parts breakdown

Search live KT-2300-1(S/N 103559-UP) parts

The Komatsu KT-2300-1 is an industrial diesel engine designed for heavy-duty applications, specifically identified in parts catalogs and operator manuals for serial number 103559-UP. It serves as the powerplant for Komatsu KT-series equipment, a line distinct from the PC excavator or D dozer series. The KT-2300-1 is part of the KT-2300 series, which succeeded earlier KT-series generations. This engine configuration is offered in specific industrial and mining variants, with operating weights and dimensions varying by the host machine's configuration and attachment package. Production years for this specific serial range are not explicitly documented in available sources, but the model remains in use for replacement and service in the current market.

Across KT-series generations, Komatsu has refined engine integration to meet evolving emissions standards and operational efficiency requirements. The KT-2300-1 represents a specific iteration in this lineage, distinguished by its serial prefix and associated parts catalog. In the used and parts market, the KT-2300-1 is significant because its specific serial range (103559-UP) dictates exact parts compatibility and maintenance procedures. Owners and operators must distinguish this model from related variants like the KT-1150-1B to ensure correct fluid specifications, filter types, and component fitment. The machine's continued presence in the market underscores the need for accurate, model-specific maintenance data to preserve reliability and avoid costly errors during service.

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 KT-2300-1(S/N 103559-UP) specifications

Engine

Model	KT-2300-1
Series/Generation	KT Series
Emissions Tier	Not documented for this exact serial range — verify with your dealer

Weights

Operating Weight	Not documented for this exact serial range — verify with your dealer
Shipping Weight	Not documented for this exact serial range — verify with your dealer
Ground Pressure	Not documented for this exact serial range — verify with your dealer

Dimensions

Transport Length	Not documented for this exact serial range — verify with your dealer
Transport Width	Not documented for this exact serial range — verify with your dealer
Transport Height	Not documented for this exact serial range — verify with your dealer
Track Gauge	Not documented for this exact serial range — verify with your dealer
Ground Clearance	Not documented for this exact serial range — verify with your dealer

Performance

Travel Speed	Not documented for this exact serial range — verify with your dealer
Gradeability	Not documented for this exact serial range — verify with your dealer

Service capacities (summary)

Engine Oil	Not documented for this exact serial range — verify with your dealer
Cooling System	Not documented for this exact serial range — verify with your dealer
Fuel Tank	Not documented for this exact serial range — verify with your dealer
Hydraulic System	Not documented for this exact serial range — verify with your dealer

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

Komatsu KT-2300-1(S/N 103559-UP) maintenance schedule

Service interval	Tasks
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 Check air filter restriction indicator
Every 250 h	Change engine oil and filter Grease all points (boom, stick, bucket, swing bearing) Check fluid levels Check air filter element Inspect belts and hoses Perform visual walk-around inspection
Every 500 h	Replace fuel filter Replace hydraulic return filter Service battery and load test Test coolant SCA concentration Collect KOWA oil sample Perform detailed undercarriage inspection
Every 1,000 h	Collect hydraulic oil sample Change final drive oil Inspect turbocharger Take wear measurements Check valve adjustment Perform structural inspection
Every 2,000 h	Change hydraulic oil Flush and replace coolant Service transmission Perform comprehensive component evaluation Inspect KDPF (at 4,500 hr intervals) Inspect SCR system (at 4,500 hr intervals)

Servicing the KT-2300-1(S/N 103559-UP) beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize Komatsu Oil Wear Analysis (KOWA) at every 500-hour interval to monitor engine wear metals and contaminants. Collect hydraulic oil samples at 1,000 hours to assess pump and valve condition. Test coolant SCA concentration at 500 hours to prevent scaling and corrosion. Monitor DEF levels daily to ensure SCR system functionality. Track KOMTRAX telematics data for load frequency and fault codes to anticipate service needs before failures occur.

Corrective & Common Repairs

Address hydraulic hose leaks and cracks during daily walk-around inspections. Replace fuel filters and drain water separators at 500-hour intervals to protect the injection system. Inspect and replace worn belts and hoses at 250-hour checks. Check and torque ROPS/FOPS bolts at 1,000 hours. Inspect structural welds on boom and stick at 1,000 hours. Replace air filter elements when the restriction indicator signals or at 1,000-hour intervals.

Overhaul & Rebuild Points

Plan major overhauls based on KOWA results and operational hours. Change final drive oil at 1,000 hours and hydraulic oil at 2,000 hours. Inspect turbocharger wear at 1,000 hours. Evaluate undercarriage wear at 500-hour detailed inspections. Replace hydraulic return filters at 500 hours. Monitor swing machinery oil levels and condition at 1,000 hours. Assess engine valve adjustments at 1,000 hours to maintain compression and performance.

Seasonal & Environment Servicing

Check coolant concentration and SCA levels before winter to prevent freezing. Drain water from the fuel separator daily in humid or cold conditions. Inspect battery terminals and load test at 500 hours to ensure cold-weather starting. Clear debris from radiator and oil cooler fins daily to prevent overheating. Use Komatsu Genuine Lubricants formulated for ambient temperatures. Inspect hoses and clamps for cold-weather brittleness during 250-hour checks.

KT-2300-1(S/N 103559-UP) common service parts

Part number	Part	Notes
6725-51-4101	Oil Filter Ass'Y	Lubrication service	Check fitment →
CU299202	Element	Scheduled service item	Check fitment →
CU256838	Element	Scheduled service item	Check fitment →
CU3177174	Element	Scheduled service item	Check fitment →
CU205615	Element	Scheduled service item	Check fitment →

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

KT-2300-1(S/N 103559-UP) fault codes & troubleshooting

Code	Meaning	Likely cause	What to do
CA115	Engine crankshaft speed sensor failure	Broken sensor, wiring issue, or connector corrosion	Replace the speed sensor and verify the voltage at the pin connector
CA111	Internal engine controller fault	ECM internal abnormality	Replace or reprogram the ECM
CA234	Engine overspeed	Throttle calibration error, engine load cycle issue, or operator misuse	Verify throttle calibration and engine load cycle
CA441	Battery voltage too low	Weak battery or charging system failure	Replace the alternator or battery; check the voltage regulator
CA442	Battery voltage too high	Faulty voltage regulator or alternator	Replace the alternator or battery; check the voltage regulator
CA122	Intake air pressure high voltage	Sensor malfunction or actual overpressure condition	Verify the intake pressure sensor and wiring
CA123	Intake air pressure low voltage	Sensor short or airflow restriction	Check for a sensor short or an airflow restriction
CA451	Common rail pressure sensor feedback value too high	Malfunction in the rail sensor or actual overpressure condition	Diagnose the fuel rail pressure sensor or pump lines
CA553	Fuel pressure high	Fuel pump regulator (IMV/PCV) malfunction	Evaluate fuel pump regulator (IMV/PCV)
CA2311	IMV solenoid valve failure	Solenoid valve malfunction or wiring issue	Replace the IMV solenoid or inspect the wire harness

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

KT-2300-1(S/N 103559-UP) attachments & work tools

Work-Tool Families

The Komatsu KT-2300-1 is an industrial engine model, not a complete machine chassis. Consequently, no specific work-tool families, bucket sizes, or attachment configurations are documented for this engine in the provided sources. Data for work tools applies to the host equipment (e.g., excavators, generators) powered by this engine, not the engine itself.

Coupler/Mounting Systems

No coupler or mounting system data is available for the KT-2300-1 engine. The engine serves as a power source component within larger assemblies; specific mounting interfaces depend on the host machine's frame design and are not defined by the engine model alone.

Hydraulic Kit/Arrangement Notes

The provided texts do not specify hydraulic kit arrangements for the KT-2300-1 engine. Hydraulic system configurations are determined by the host machine's hydraulic pump and valve assemblies, not the engine model itself.

Factory Configurations/Guarding

The KT-2300-1 engine is identified in parts catalogs and serial number guides (S/N 103559-UP). It is noted as being compatible with Komatsu PC200 series excavators. Specific guarding or factory configurations for the engine are not detailed in the provided sources.

All KT-2300-1(S/N 103559-UP) assemblies by section

Every catalogued assembly group for the Komatsu KT-2300-1(S/N 103559-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Accessory

Komatsu : Kt-2300-1(S/N 103559-Up) : Accessory : Air Compressor Tubing

CU***68	Tube	1
CU***85	Connection	1
CU***-A	Elbow	2
CU***86	Tube	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Accessory : Air Compressor(#103559-103937)

CU***03	Plate? Name,(Not Shown)	1
CU***36	Gasket	1
CU***58	Coupling	1
CU***29	Plate	2

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Komatsu : Kt-2300-1(S/N 103559-Up) : Accessory : Air Compressor(#103938-)

CU***32	Air Compressor Ass'Y	1
CU***36	Gasket	1
CU***58	Coupling	1
CU***29	Plate	2

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Cooling And Electrical Systems

Komatsu : Kt-2300-1(S/N 103559-Up) : Cooling And Electrical Systems : Accessory Drive System

67***10	Pulley,Accessory Drive	1
CU***72	Shaft	1
CU***74	Hub	1
CU***55	Bolt	4

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cooling And Electrical Systems : Air Starter (Op)

CU***15	Washer	8
CU***94	Screw	1
CU***63	Screw	1
CU***65	Nut	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cooling And Electrical Systems : Air Starter Mounting (Op)

01***25	Bolt,(Sandy? Dusty Terrain Spec.)	2
01***30	Washer,Spring(Sandy?Dusty Terrain S.)	3
01***16	Washer,(With Shoe Slip Control)	2
01***32	Washer,(With Auto Emergency Steering)	4

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cooling And Electrical Systems : Alternator

CU***71	Resistor	1
CU***06	Washer	1
CU***00	Grommet	1
CU***94	Screw	4

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cooling And Electrical Systems : Alternator Mounting

67***13	Bracket	1
CU***60	Washer	3
CU***29	Bolt	1
CU***12	Belt	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cooling And Electrical Systems : Control Rod(#104434-)

CU***5A	Nut	1
CU***20	Bolt	1
CU***1B	Bolt	1
CU***24	Rod	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cooling And Electrical Systems : Corrosion Resistor(#103562-)

CU***0L	Inhibitor,(Service Parts)	0
CU***99	Head Ass'Y	2
CU***02	Decal,(Not Shown)	4
CU***76	Bolt	4

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cooling And Electrical Systems : Fan Hub And Idler(#106419-)

01***38	Washer,Radio Controlled Slag Handling	6
01***23	Washer	6
02***95	Bolt	6
02***02	Bolt	6

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cooling And Electrical Systems : Safety Relay? Drain Hose And Thermostat

Komatsu : Kt-2300-1(S/N 103559-Up) : Cooling And Electrical Systems : Starting Motor

CU***69	Screw	2
CU***49	Brush	1
CU***84	Drive Ass'Y	1
CU***22	Plunger	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cooling And Electrical Systems : Thermostat Housing

67***10	Cover	1
CU***56	Tube	1
CU***69	Plug	6
CU***66	Plug	2

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cooling And Electrical Systems : Water Pump And Tubing

01***29	Washer,Spring (Cold Weather Spec.)	4
02***38	Bolt,Radio Controlled Slag Handling	4
02***10	Plug (Heater Not Installed)	4
67***10	Tube	1

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Cylinder Block

Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Cam Follower And Housing

CU***26	Cam Follower Ass'Y,Intake And Exhaust	24
CU***04	Gasket	12
CU***26	Shaft Ass'Y	12
CU***12	Bolt	24

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Camshaft

CU***63	Shaft	2
CU***14	Key	2
CU***22	Bolt	2
CU***02	Washer	6

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Crankshaft And Vibration Damper

CU***13	Bearing,No.1?7	0
CU***00	Bearing,No.1?7	2
CU***11	Bearing,No.1?7	2
CU***82	Bearing,No.2?3?4?5?6	5

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Cylinder Block (1/2)

CU***24	Plug	15
CU***63	Shaft	2
CU***66	Plug	20
CU***15	Seal,Crevice	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Cylinder Block (2/2)

07***13	Hose	2
07***59	Clamp,See Fig. K4010-05a0	2
66***70	Clip,(For Slag Handling)	3
66***80	Plate	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Flywheel And Flywheel Housing

Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Front Gear Housing Cover

CU***19	Gasket	1
CU***66	Plug	3
CU***87	Seal	1
CU***20	Bolt	6

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Hand Hole Cover (L.H.)(#106220-107012)

07***59	Clamp - Drain Hose	1
07***12	Hose	1
60***60	Band	1
66***90	Clamp	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Hand Hole Cover (L.H.)(#107013-)

07***59	Clamp - Drain Hose	1
07***12	Hose	1
60***60	Band	1
66***90	Wrench	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Hand Hole Cover (R.H.)(#106220-107012)

07***59	Clamp - Drain Hose	1
07***12	Hose	1
60***60	Band	1
66***90	Clamp	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Hand Hole Cover (R.H.)(#107013-)

07***59	Clamp - Drain Hose	1
07***12	Hose	1
60***60	Band	1
66***90	Clamp	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Hand Hole Cover(#103559-104433)

CU***12	Bolt	72
CU***04	Washer,Spring	72
CU***54	Bolt	72
CU***71	Gauge	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Hand Hole Cover(#104434-104434)

07***59	Clamp - Drain Hose	2
07***12	Hose	2
60***60	Band	2
66***90	Clamp	2

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Hand Hole Cover(#104435-104775)

CU***12	Bolt	72
CU***04	Washer,Spring	72
CU***54	Bolt	72
CU***71	Gauge	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Hand Hole Cover(#104776-106219)

07***59	Clamp - Drain Hose	2
07***12	Hose	2
60***60	Band	2
66***90	Clamp	2

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Oil Pan

08***10	Band,Fuel Hose	1
66***50	Gasket,Oil Pan And Cooler	1
66***11	Heater,Oil Pan (Op)	2
66***31	Elbow,(Not Shown)	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Block : Piston And Connecting Rod

CU***10	Ring,Oil	1
CU***60	Bearing	24
CU***50	Piston	12
CU***66	Bolt	2

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Cylinder Head

Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Head : Air Intake Manifold And Connection

CU***43	Seal	4
CU***55	Bolt	8
CU***04	Ring	48
CU***75	Bolt,(12 Point Head)	36

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Head : Cylinder Head

CU***25	Valve,Exhaust	2
CU***79	Plate	1
CU***24	Plug	2
CU***38	Bolt	72

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Head : Exhaust Manifold

CU***37	Manifold,Exhaust	2
CU***24	Manifold,Exhaust	2
CU***31	Manifold,Exhaust	2
CU***94	Washer	48

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Head : Rocker Arm And Lever Housing

CU***26	Bushing	1
CU***28	Shaft,Rocker Lever	1
CU***01	Gasket	12
CU***28	Washer	96

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Head : Turbocharger(#103559-103924)

CU***36	O-Ring	4
CU***65	Bolt	16
CU***56	Plate	1
CU***68	Elbow,(Not Shown)	2

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Komatsu : Kt-2300-1(S/N 103559-Up) : Cylinder Head : Turbocharger(#103925-)

CU***36	O-Ring	4
CU***05	Shaft Ass'Y	1
CU***65	Bolt	16
CU***56	Plate	1

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Fuel System

Komatsu : Kt-2300-1(S/N 103559-Up) : Fuel System : Afc Vs Main Shaft

67***10	Adapter,(Not Shown)	1
CU***08	Weight Ass'Y	1
CU***15	Seal	1
CU***01	Shaft	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Fuel System : Automotive Governor Spring Packs

CU***-A	Shim? 0.010inch	0
CU***00	Shim	0
CU***93	Pack Ass'Y	1
CU***-B	Shim? 0.005inch	0

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Komatsu : Kt-2300-1(S/N 103559-Up) : Fuel System : Cold Starting Aid

08***19	Band,(Without Air Conditioner)	10
08***14	Clip - Harness	20
67***21	Cable,Control	1
67***31	Cylinder Ass'Y	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Fuel System : Fuel Manifold And Fuel Filter

CU***18	Washer	4
CU***46	Elbow	2
CU***66	Plug	1
CU***50	Ferrule	17

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Komatsu : Kt-2300-1(S/N 103559-Up) : Fuel System : Fuel Pump Housing

CU***15	Seal	1
CU***82	Housing	1
CU***80	Lever	1
CU***18	Screw,Adjust	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Fuel System : Gear Pump

CU***29	Bolt	6
CU***14	Washer	1
CU***-A	Pin,Dowel	2
CU***47	Elbow	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Fuel System : Injector

CU***44	Ring	12
CU***26	Pin	2
CU***75	Fuel Injector Ass'Y	12
CU***82	Orifice? 0.36mm,(0.14)	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Fuel System : Pt Pump And Fuel Tubing

02***04	Plug	1
67***10	Connector	1
CU***46	Elbow	2
CU***50	Ferrule	16

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Komatsu : Kt-2300-1(S/N 103559-Up) : Fuel System : Shutdown Valve

CU***74	Coil	1
CU***5A	Adapter	1
CU***68	Spring	1
CU***66	Washer,Spring	2

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Lubricating Oil System

Komatsu : Kt-2300-1(S/N 103559-Up) : Lubricating Oil System : Bypass Filter And Mounting(#103559-104977)

CU***38	Element	1
CU***59	O-Ring	1
CU***74	Bracket	2
CU***56	Coupling Ass'Y	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Lubricating Oil System : Bypass Filter And Mounting(#104978-)

01***34	Washer,Spring	2
02***51	Bolt	2
CU***73	Plug	2
CU***29	Adapter	2

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Komatsu : Kt-2300-1(S/N 103559-Up) : Lubricating Oil System : Bypass Filter Tubing(#103559-104977)

CU***74	Adapter	2
CU***SS	Hose	1
CU***SS	Hose	1
CU***33	Tee	2

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Komatsu : Kt-2300-1(S/N 103559-Up) : Lubricating Oil System : Lubricating Oil Cooler

CU***74	Element	3
CU***22	Cover	1
CU***-D	Bolt,(Hexagon Head)	54
CU***12	Bolt	1

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Komatsu : Kt-2300-1(S/N 103559-Up) : Lubricating Oil System : Lubricating Oil Filter

01***25	Bolt,(Sandy? Dusty Terrain Spec.)	9
01***29	Washer,Spring (Cold Weather Spec.)	19
01***30	Washer,Spring(Sandy?Dusty Terrain S.)	9
01***16	Washer,(With Shoe Slip Control)	6

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Komatsu : Kt-2300-1(S/N 103559-Up) : Lubricating Oil System : Lubricating Oil Pump

CU***65	Connection	1
CU***79	Gasket	1
CU***50	Bracket	2
CU***08	Plate,Lock	8

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KT-2300-1(S/N 103559-UP) serial number reference

The PIN plate for the Komatsu KT-2300-1 engine is typically located on the engine block or a metal data plate affixed near the valve cover. Read the prefix (KT-2300-1) to identify the engine model, then verify the serial number (103559-UP) against the parts catalog to ensure correct component fitment.

Prefix	Identifies	Notes
KT-2300-1	Engine	Identifies the Komatsu KT-2300-1 engine family. Serial range 103559-UP covers this specific configuration. No other prefixes are documented for this exact engine serial range in the provided sources.

Frequently asked questions

What engine does the Komatsu KT-2300-1 use?

The Komatsu KT-2300-1 is a Komatsu industrial diesel engine. Specific displacement, cylinder count, and emissions tier details are not provided in the available sources for this exact serial range. Consult the machine's operation and maintenance manual or a Komatsu dealer for precise engine specifications.

What is the operating weight of the Komatsu KT-2300-1?

The operating weight varies by configuration, series, and host machine setup. The KT-2300-1 is an engine model, not a complete machine, so it does not have a standalone operating weight. Weights depend on the specific KT-series equipment it powers and its attachment package.

What replaced the Komatsu KT-2300-1?

The available sources do not specify a direct successor model that replaced the KT-2300-1. Komatsu continues to offer KT-series engines for industrial applications. Check with a Komatsu dealer or official parts catalog for the current model line replacing this specific serial range.

What KT-2300-1(S/N 103559-UP) owners discuss

What are the typical powertrain and hydraulic behaviors observed in the Komatsu KT-2300-1(S/N 103559-UP) series?

Operators report that hydraulic performance degrades significantly when oil warms up, indicating internal leakage in the main pump or control valve. A common failure pattern involves the entire hydraulic system slowing down simultaneously rather than isolated circuit failures. If the main hydraulic pump fails, the engine is often damaged shortly after due to high load. The machine is designed to wear out major components simultaneously, which negatively impacts resale value. Slow travel or walking deviation is frequently traced to the PC valve, LS valve, or walking pressure compensation valve rather than the final drives themselves. Black smoke from the exhaust often signals airflow restriction or injector issues. The engine may lose power under heavy digging load if air filters, fuel filters, or the fuel tank vent are restricted. Overheating during heavy excavation is typically caused by debris packed between the radiator, hydraulic oil cooler, and charge-air cooler, even if the exterior appears clean. The cooling system may show marginal capacity, where temperatures rise during work but drop during idle. Engine oil burning is commonly linked to dirty air filters, improper gas channeling, or use of non-standard oil. The main safety valve requires regular inspection to prevent slow heating and ensure smooth hydraulic operation. Hydraulic noise or cavitation usually points to low oil levels or suction-side issues. The swing system may drift or fail to hold position if the swing brake or mechanical play is compromised. Track tension must be monitored regularly; tracks that repeatedly loosen indicate undercarriage wear or adjuster issues. One side traveling faster than the other often stems from track tension differences, debris in the undercarriage, or hydraulic flow imbalance. Bushings and bearings on the working device wear quickly, leading to noise and vibration. Worn track pads and bearings cause premature track failure. Corrosion from moisture, dust, and salt accelerates wear on exposed metal components. Electromechanical issues include intermittent starting, dashboard failures, and random shutdowns caused by faulty sensors or unstable power supplies. When buying a used KT-2300-1(S/N 103559-UP), verify the exact serial-prefix specification sheet, installed attachment package, and regional emissions configuration, as these affect weight, reach, and fuel use. Check battery state of charge, terminals, and grounds. Test the fuel system for quality and air leaks. Inspect hydraulic oil level, condition, and filter status. Verify engine RPM under load. Check cooling package for blockages. Inspect undercarriage for wear and track tension. Test all hydraulic functions cold and hot to identify leakage. Check for multiple fault codes indicating electrical issues. Have your dealer verify the engine and hydraulic system condition before purchase.

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

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