Komatsu LC755-3-ME(S/N 30001-UP)
Komatsucrane(no series)

Komatsu LC755-3-ME(S/N 30001-UP)

Maintenance schedule, common problems & OEM parts breakdown

The Komatsu LC755-3-ME is a 4.9-ton mini crawler crane designed for precision lifting in confined spaces. It is powered by a Komatsu 4D102E engine rated at 40.5 kW (55 PS) at 1,750 rpm. The machine features a fully hydraulic 5-section telescopic boom extending from 4.56 m to 15.56 m, with a maximum lifting height of 16.35 m and a working radius of 14.45 m. Dimensions are 4,490 mm in length, 2,230 mm in width, and 2,545 mm in height, with a transportable weight of approximately 9,600 kg. It is part of Komatsu's historical mini crane lineup, which also included rail and city-class rough terrain variants.

Komatsu has ceased manufacturing telescopic cranes, making the LC755-3-ME a discontinued model in the used market. Its significance lies in its compact footprint and high maneuverability, which remain valuable for industrial plant installations and interior building work where larger cranes cannot operate. The machine's reliability and specific hydraulic configurations continue to drive demand for its specialized parts and service expertise.

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 LC755-3-ME(S/N 30001-UP) specifications

Engine

ModelKomatsu 4D102E
Gross Power40.5 kW (55 PS) at 1,750 rpm
DisplacementNot documented for this exact serial range — verify with your dealer
Cylinders4
Emissions TierNot documented for this exact serial range — verify with your dealer

Weights

Operating Weight9,600 kg (21,164 lb)
Shipping WeightNot documented for this exact serial range — verify with your dealer
Ground Pressure0.32 kgf/cm²

Dimensions

Transport Length4,490 mm (14 ft 9 in)
Transport Width2,230 mm (7 ft 4 in)
Transport Height2,545 mm (8 ft 4 in)
Track GaugeNot documented for this exact serial range — verify with your dealer
Ground ClearanceNot documented for this exact serial range — verify with your dealer
Track Width450 mm (17.7 in)
Total Ground Contact Length2,235 mm (7 ft 4 in)

Performance

Travel Speed2.2 km/h (1.4 mph)
Swing Speed2.0 rpm
Boom Elevation Angle-2° to 80°
Boom Elevation Time14 seconds
Max Lifting Height16.35 m (53.6 ft)
Max Working Radius14.45 m (47.4 ft)
Boom Extension4.56 m to 15.56 m (14.96 ft to 51.05 ft)
Hoisting Speed21.5 m/min (70.5 ft/min) and 32.5 m/min (106.6 ft/min)
Wire Rope6xFi (29) IWRC, 10 mm diameter, 115 m length

Service capacities (summary)

Fuel Tank140 L (37.0 gal)
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 LC755-3-ME(S/N 30001-UP) maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level and condition.
  • Check hydraulic fluid level via sight glass.
  • Check coolant level and ensure cap is secure.
  • Drain water from fuel separator.
  • Check DEF level.
  • Check air filter restriction indicator.
  • Inspect track tension and shoe/pad condition.
  • Inspect hydraulic hoses for cracks and leaks.
  • Inspect pins, bushings, and attachment points.
  • Clear debris from radiator and oil cooler fins.
  • Check for fluid leaks under the machine.
  • Verify ROPS/FOPS integrity and seat belt.
  • Test horn, backup alarm, and lights.
  • Verify emergency shutoff accessibility.
  • Test all controls for smooth response.
  • Check service and parking brakes.
Every 250 h
  • Change engine oil and filter.
  • Grease all points including boom, stick, bucket, and swing bearing.
  • Check fluid levels.
  • Inspect air filter.
  • Inspect belts and hoses.
  • Perform visual walk-around inspection.
Every 500 h
  • Replace fuel filter.
  • Replace hydraulic return filter.
  • Service battery and test alternator.
  • Test coolant SCA.
  • Collect KOWA oil sample.
  • Perform detailed undercarriage inspection.
Every 1,000 h
  • Collect hydraulic oil sample.
  • Change final drive oil on both sides.
  • 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.
  • Replace worn belts, hoses, and clamps.

Servicing the LC755-3-ME(S/N 30001-UP) beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize KOWA fluid analysis at every major service interval to monitor engine wear metals, hydraulic particle counts, and coolant pH levels. The 4D102E engine requires Komatsu Genuine Lubricants to maintain strict engineering standards. Regularly sample hydraulic oil for viscosity changes and oxidation. Monitor DEF levels daily to ensure Tier 4 emissions compliance. Track fuel dilution and soot levels in the engine oil to predict injector or piston ring wear before failure occurs.

Corrective & Common Repairs

Address hydraulic hose cracks and leaks immediately to prevent system contamination. Inspect the 5-section telescopic boom for structural fatigue or weld cracks during the 1,000-hour structural inspection. Check the swing bearing and travel system for excessive play. Replace the hydraulic return filter and fuel filter at 500-hour intervals to protect the high-pressure pumps. Verify the integrity of the electronic monitoring systems for the hoist drum rotation and other critical operations.

Overhaul & Rebuild Points

Plan major overhauls at 2,000-hour intervals, including hydraulic oil changes, coolant flushes, and transmission service. Inspect the turbocharger and perform valve adjustments as needed. Evaluate the undercarriage wear at 500-hour intervals to determine track chain and sprocket replacement timing. Comprehensive component evaluation at 2,000 hours identifies wear in the derrick cylinder and hook block mechanisms. Replace worn belts and clamps to prevent secondary engine damage.

Seasonal & Environment Servicing

Clear debris from the radiator and oil cooler fins daily to prevent overheating in dusty or hot environments. Check track tension and shoe condition regularly to maintain stability on soft or uneven ground. Inspect the air filter restriction indicator frequently in high-dust conditions. Ensure the cooling system SCA levels are adequate for the operating climate. Verify that the DEF system is protected from freezing in cold weather operations.

LC755-3-ME(S/N 30001-UP) common service parts

Part numberPart
6732-71-6111Filter, Fuel - SecondaryCheck fitment →
6732-21-5530Cartridge, Engine Oil FilterCheck fitment →
6162-53-5430Packing,Oil Filter And PipingCheck fitment →
6162-53-5450Packing,Oil Filter And PipingCheck fitment →
600-181-6340Element Ass'Y,(Double Element)(Not Shown)Check fitment →

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

LC755-3-ME(S/N 30001-UP) fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
CA115Engine crankshaft speed sensor failureBroken sensor, wiring issue, or connector corrosionReplace the speed sensor and verify voltage at the pin connector
CA111Internal engine controller faultECM internal abnormalityReplace 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
CA441Battery voltage too lowAlternator or battery failure; voltage regulator issueReplace the alternator or battery; check the voltage regulator
CA442Battery voltage too highAlternator or battery failure; voltage regulator issueReplace the alternator or battery; check the voltage regulator
CA234Engine overspeedThrottle calibration error, engine load cycle issue, or operator misuseVerify throttle calibration and engine load cycle
AA10NXAir cleaner cloggingDirty or blocked air filter elementReplace the air filter
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 error (high)Faulty IAT sensorReplace 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.

LC755-3-ME(S/N 30001-UP) attachments & work tools

Hook Blocks

Factory-supplied hook blocks are rated for 2.45 tons and 4.9 tons. These are the standard lifting attachments for the 4.9-ton capacity mini crawler crane.

Boom & Hoist Systems

The machine utilizes a fully hydraulic 5-section telescopic boom extending from 4.56 meters to 15.56 meters. The hoist drum uses 6xFi (29) IWRC wire rope, 10 mm in diameter and 115 meters in length, supporting four-part reeving.

Safety & Monitoring

Integrated load moment limiter (LMI) and anti-two block systems are standard. Electronic monitoring systems track hoist drum rotation and other key operations to prevent overload conditions.

Undercarriage & Mobility

The crane is mounted on a crawler base with 450 mm-wide tracks and a total ground contact length of 2,235 mm. It exerts a low ground pressure of 0.32 kgf/cm² and has a maximum traction speed of 2.2 km/h.

Engine & Power

Powered by a Komatsu 4D102E 4-cylinder diesel engine rated at 40.5 kW (55 PS) at 1,750 rpm. The unit incorporates a 140-liter fuel tank for prolonged operation.

Dimensions & Weight

The LC755 measures 4,490 mm in length, 2,230 mm in width, and 2,545 mm in height. The transportable weight is approximately 9,600 kg.

All LC755-3-ME(S/N 30001-UP) assemblies by section

Every catalogued assembly group for the Komatsu LC755-3-ME(S/N 30001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

4d102e-1-X Engine S/N 26226159-Up
Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Air Cleaner (Single Element Type) (Forwerded Individually Parts)
04***10Ring,See Fig. K4010-65a01
08***0AIndicator,Dust1
60***40Element Ass'Y,(Double Element)(Not Shown)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Air Connector
02***04Plug1
67***11Connector1
67***10Plug, Pipe (1/2-14 Npt)2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Air Heater Wiring
08***19Cap, At Heater Relay Terminals1
21***50Wiring Harness1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Air Intake Heater
67***10Gasket1
67***11Gasket,Air Intake Heater1
67***10Harness, Wiring1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Alternator (25a)
(6***0)Alternator A. (25a),(See Fig.A601p-02a5)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Alternator (25a) (Inner Parts)
60***10Alternator A. (25a)1
KD***57Bearing,Ball? Front1
KD***60Pulley,Non Hardening1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Alternator Support
01***30Bolt,(For Trimming Dozer)1
01***11Nut (Welded)1
01***23Washer,(With Car Heater)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Alternator Wiring Support
01***35Bolt, Cover1
61***61Spacer1
62***40Plate1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Belt Tensioner (For 25a Alternator)
67***20Bolt (M10x1.50x70)1
67***30Tensioner, Belt1
67***20Capscrew, Flat Head (M8-1.25x25)2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Breather Hose
Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Camfollower Cover
67***20Bolt, Mounting (M8-1.25x16)4
67***10Cover, Push Rod1
67***61Gasket, Push Rod Cover1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Camshaft
67***10Camshaft1
67***20Support, Camshaft Thrust1
67***31Gear, Camshaft1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Caution Plate (Japanese-English)
09***61Plate? Instruction,(Japanese-English)1
67***11Plate? Name1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Cooling Fan
01***55Bolt, Mount Dryer To Bracket And Frame4
01***30Screw4
60***20Fan,Cooling1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Crank Pulley(#26226159-26232220)
67***10Pulley, Crankshaft1
67***20Bolt (M12x1.25x36)4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Crank Pulley(#26232221-)
61***60Boss4
67***10Pulley, Crankshaft1
67***20Bolt (M12x1.25x36)4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Crankshaft
67***20Crankshaft Ass'Y1
67***50Gear, Crankshaft1
67***11Gear, Crankshaft1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Cylinder Block
62***10Screw1
62***10Seal, O-Ring (M10-1.00)3
67***30Block Assembly, Cylinder1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Cylinder Head
67***10Head Ass'Y1
67***50Gasket1
67***70Insert, Exhaust4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Drain Plug And Oil Gauge
07***16Gasket,(For Pc750-6) (See Fig.A2110)1
61***30Gauge1
62***80Plug,Drain1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Exhaust Connection
67***10Stud ((M10x1.50 (Both Ends) X42))4
67***20Nut (M10x1.50)4
67***90Gasket, Exhaust Outlet Connection1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Exhaust Manifold
07***08Plug,(Without Auto Priming System)1
67***10Manifold1
67***30Bolt, Mounting (M10x1.50x65)8
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fan Drive Pulley
01***30Bolt,(Water Separator Spec.)3
01***75Screw1
67***30Support Ass'Y1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fan Pulley
Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Flywheel
67***20Washer, Plain (M12)8
67***30Bolt (M12x1.25x32)8
67***00Flywheel Ass'Y1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Flywheel Housing
07***15Plug1
67***20Bolt (M8-1.25x16)2
67***30Plate, Cover1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Front Cover
67***40Pin, Timing1
67***50Ring, Retaining1
67***60Screw, Round Head (M5-0.80x17)2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Front Gear Train Cover
01***30Bolt2
67***10Cover1
67***80Gasket, Accessory Drive Cover1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fuel Filer Piping
07***12Gasket,Injection Pump Piping2
67***40Tube1
67***10Bolt, Banjo Connector (M12-1.50x24)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fuel Filter
67***11Filter, Fuel - Secondary1
67***50Adapter, Filter Head1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fuel Filter Joint
07***12Gasket,Injection Pump Piping3
61***90Joint1
63***60Joint1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fuel Injection Pump (Feed Pump) (Inner Parts)
DK***20Bolt, Joint1
DK***00Valve,Check2
DK***20Pump,Priming1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fuel Injection Pump (Governor) (1/2) (Inner Parts)
DK***00Shim? 2.00mm,(High Altitude Spec.)0
DK***00Gasket1
DK***90Governor Ass'Y1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fuel Injection Pump (Governor) (2/2) (Inner Parts)
DK***20Lever1
DK***00Gasket1
DK***40Gasket,Air Compressor2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fuel Injection Pump (Pump) (1/2) (Inner Parts)
67***10Injection Pump A1
DK***30Bearing0
DK***20Housing1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fuel Injection Pump (Pump) (2/2) (Inner Parts)
DK***40Shim? 0.50mm, Shim, 0.50mm; Was Dk029311-00400
DK***90Shim? 0.25mm, Shim, 0.25mm; Was Dk029311-05900
DK***00Sleeve,Control4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fuel Injection Pump And Oil Piping
07***12Gasket,(Without Air Compressor Type) (K2)2
07***10Screw, Banjo Connector (M10-1.25x20)1
62***10Seal, O-Ring (M10-1.00)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fuel Injection Pump Mounting
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 : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fuel Inlet And Outlet Joint
61***50Connector, Banjo1
61***50Joint1
67***40Cap,(For Shipping)2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fuel Lift Pump
Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fuel Piping
04***08Clip1
61***80Spacer2
67***20Bolt, Mounting (M8-1.25x16)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Fuel System Accessories
07***12Gasket,Injection Pump Piping2
67***60Bolt, Mounting (M8-1.25x25)1
67***20Bolt, Flange (M8-1.25x20)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Head Cover (Without Oil Filler Cap)
67***30Bolt (M8x1.25x25)4
67***50Washer, Plain (3/8 Inch)4
67***81Gasket, Valve Cover4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Heater Switch (Forwerded Individually Parts)
Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Injection Nozzle
67***00Nozzle Holder Ass'Y4
67***60Nozzle1
67***50Seal, Rectangular Ring4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Muffler
01***25Bolt, Mount Engine Oil Drain To Fuel Tank4
01***35Bolt,R.H. (For Add. Air Compressor)2
01***06Nut4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Oil Cooler Cover
67***10Connection1
67***20O-Ring,Oil Pressure Plug1
67***32Gasket,Oil Pressure Plug1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Oil Filler(#26226159-26231194)
01***16Bolt, Mount Solenoid Valve2
01***30Bolt, Mounting - Front Hand Rails2
07***89Clamp,(D31s)2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Oil Filler(#26231195-)
01***30Bolt,(Water Separator Spec.)1
01***30Bolt, Mounting - Front Hand Rails2
61***72Clamp1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Oil Filter And Piping(#26226159-26231194)
01***30Bolt,(Water Separator Spec.)2
01***25Bolt, Mount Engine Oil Drain To Fuel Tank2
01***20Screw2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Oil Filter And Piping(#26231195-)
01***30Bolt,(Water Separator Spec.)2
01***20Bolt, Hose Clamps (Inlet And Return Line Hoses)1
01***25Bolt, Mount Engine Oil Drain To Fuel Tank2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Oil Pan And Suction Tube
09***50Liquid Gasket, Lg-7, 150g0
67***40Pan, Oil1
67***60Bolt, Mounting (M8-1.25x25)2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Oil Pan Bolt
Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Oil Piping Elbow
Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Oil Pressure Switch
08***05Switch,Engine Oil Pressure1
62***10Seal, O-Ring (M10-1.00)1
67***30Cartridge, Engine Oil Filter1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Oil Pump
67***11Pump, Lubricating Oil1
67***20Bolt (M8x1.25x30)4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Piston
67***00Piston Ring Ass'Y4
67***10Pin, Piston4
67***20Ring, Retaining8
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Rear Hanger
04***08Clip1
08***14Clip,(With After Cooler)1
67***10Hanger1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Repair Parts (1/4) (Cylinder Head)
67***51Gasket, Cylinder Head1
67***51Gasket, Cylinder Head1
67***10Guide, Valve Stem - Intake/Exhaust (Thin Wall)8
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : 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 Bore4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Repair Parts (3/4) (Crankshaft)
67***00Main Metal Ass'Y4
67***00Main Metal Ass'Y4
67***00Main Metal Ass'Y4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Repair Parts (4/4) (Piston)
67***00Piston Ring Ass'Y4
67***10Ring,Top1
67***20Ring,Second1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Rocker Arm
67***40Bolt4
67***10Rod, Push8
67***60Washer, Plain (M19)8
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Starting Motor (4.5kw)
(6***0)Starting Motor Ass'Y,(4.5kw) (See Fig.A621p-02a0)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Starting Motor (4.5kw) (Inner Parts)
60***10Starting Motor Ass'Y1
KD***10Spring1
KD***40Pinion1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Starting Motor Mounting
67***11Gasket,Starter1
67***20Bolt, Mounting (M10x1.50x35)2
67***10Bolt (M10x1.50x35)2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Stop Solenoid
01***20Bolt,(With Tachometer Outlet)2
01***35Screw1
01***70Bolt2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Tachometer Drive Cover
67***90Cover, Mechanical Tach Drive1
67***20Seal, Rectangular Ring1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Tappet
Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Thermostat
Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Thermostat Housing
67***40Bolt, (M8x1.25x35)1
67***70Coupling, Plain Hose1
67***80Bolt (M8-1.25x70)2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Under Plate
67***50Plate, Cylinder Block Stiffener1
(0***0)Liquid Gasket, Lg-7, 150g0
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Water Connector
67***10Connector1
67***20Bolt (M10-1.50x75)3
67***30Seal,Water Inlet Connection1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Water Connector Plug
Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Water Pump
67***60Bolt (M8x1.25x22)2
67***01Water Pump Ass'Y1
67***20Seal, Rectangular Ring1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : 4d102e-1-X Engine S/N 26226159-Up : Water Valve And Water Temperature Sensor
20***30Valve,Heat Water Inlet1
67***10Adapter1
78***80Sensor,Water Temperature1
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Accessory
Komatsu : Lc755-3-Me(S/N 30001-Up) : Accessory : General Tools
MH***05Driver,(-)1
MH***00Tool Set1
MH***04Driver,(+)1
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Cooling System
Komatsu : Lc755-3-Me(S/N 30001-Up) : Cooling System : Cooling (Piping And Mounting)
01***16Bolt - Seat And Tether Belt Mounting3
01***23Washer, Wiring Harness Mounting Bracket3
07***55Clamp, Hose3
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Cooling System : Cooling (Radiator And Oil Cooler)
Komatsu : Lc755-3-Me(S/N 30001-Up) : Cooling System : Fan Guard (With Car Cooler)
01***16Bolt - Seat And Tether Belt Mounting3
01***23Washer, Wiring Harness Mounting Bracket3
21***11Guard1
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Electrical System
Komatsu : Lc755-3-Me(S/N 30001-Up) : Electrical System : Battery
MH***00Cable,(+)1
MH***10Nut2
MH***00Cable,Engine Earth1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Electrical System : Boom Electrical (Boom Angle Limit Switch)
MH***00Bracket,Limit Switch1
MH***25Bolt4
MH***00Boom Limit Switch G0
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Electrical System : Boom Electrical (Boom Angle? Length And Pressure Sensor)
MH***50Band5
MH***00Sensor,Oil Pressure2
MH***00Guard1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Electrical System : Boom Electrical (Over-Winding Switch)
MH***00Sensor,Over Retracting1
MH***50Clip,Nylon2
MH***40Pin,Spring1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Electrical System : Electrical (Boom Harness) (For Ec)
MH***00Wiring Harness,Rotary Lamp1
MH***00Wiring Harness,Crane Valve1
MH***00Wiring Harness,Work Lamp? Front1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Electrical System : Electrical (Emo Switch) (For Ec)
MH***00Emo Switch Ass'Y1
MH***00Emo Switch1
MH***00Bracket,Emo Switch1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Electrical System : Electrical (Engine Harness) (For Ec)
Komatsu : Lc755-3-Me(S/N 30001-Up) : Electrical System : Electrical (Floor Frame Harness) (For Ec)
MH***00Wiring Harness,Panel Switch1
MH***00Wiring Harness,Meter1
MH***00Wiring Harness,Horn Switch1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Electrical System : Electrical (Work Lamps)
MH***00Work Lamp Ass'Y,Front1
MH***00Work Lamp Ass'Y,Boom1
MH***03Washer,Spring1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Electrical System : Instrument Panel (Gauge Cluster)
08***00Switch,(Sandy And Dusty Terrain S.)1
MH***00Switch,Cancel? Stop Over Retracting1
MH***00Switch,Car Heater? High1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Electrical System : Moment Limiter (Controller) (For Ec)
MH***00Buzzer,Caution1
MH***10Bolt1
MH***10Nut4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Electrical System : Moment Limiter (Monitor Panel) (For Ec)
MH***10Nut4
MH***00Box,Indicator Lamp1
MH***10Bolt6
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Engine Related Parts
Komatsu : Lc755-3-Me(S/N 30001-Up) : Engine Related Parts : Engine Mount (Air Cleaner)
07***80Clamp2
08***0AIndicator,Dust1
62***50Air Cleaner Ass'Y1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Engine Related Parts : Engine Mount (Bracket)
01***30Bolt4
01***32Washer,(Not Used With Emergency Str.)14
04***28Pin, Dowel - Transmission Case, Pin-Dowel1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Engine Related Parts : Engine Mount (Exhaust Muffler Related)
01***20Bolt, Wiring Harness Mounting Bracket3
01***30Bolt,(With Body Positioner)1
01***45Bolt,(With Water Separator Type)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Engine Related Parts : Fuel Control
MH***20Pin,Cotter1
MH***-0End,Wire1
MH***30Bolt2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Engine Related Parts : Power Take Off
MH***25Bolt6
MH***10Pin,Spring12
MH***00Hub1
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Fuel Tank And Related Parts
Komatsu : Lc755-3-Me(S/N 30001-Up) : Fuel Tank And Related Parts : Fuel Tank (Fuel Line)
67***11Pump,Suction1
MH***05Connector2
MH***00Hose1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Fuel Tank And Related Parts : Fuel Tank (Tank)
MH***00Tank Ass'Y1
MH***00Sensor,Fuel Level1
MH***05Filler Cap Ass'Y1
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Guard
Komatsu : Lc755-3-Me(S/N 30001-Up) : Guard : Front Cover
MH***10Nut1
MH***00Angle2
MH***02Washer? Spring,(M10)12
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Guard : Left Side Cover
MH***04Washer1
MH***14Screw2
MH***10Nut2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Guard : Machinery Compartment
Komatsu : Lc755-3-Me(S/N 30001-Up) : Guard : Rear Cover And Rear View Mirror
56***10Mirror,(With Under Mirror)1
MH***15Bolt4
MH***03Washer,Spring2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Guard : Right Side Cover
20***10Spring (Welded)1
MH***00Sheet1
MH***00Cover,R.H. Side1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Guard : Under Cover
MH***00Cover,Under1
MH***00Cover,Under1
MH***02Washer? Spring,(M10)10
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Hydraulic System
Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : 2-Section Solenoid Valve (For Ec)
MH***00Solenoid Valve Ass'Y,2-Section1
MH***00Bracket Group,2-Section Solenoid Valve0
MH***00Bracket,2-Section Solenoid Valve (Welded)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Piping (2-Section Solenoid Valve Line) (For Ec)
MH***30Hose1
MH***70Hose1
MH***30Elbow2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Piping (Delivery Line) (For Ec)
MH***60Elbow1
MH***60Elbow1
MH***02Head Ass'Y1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Piping (Derrick Cylinder Line) (For Ec)
MH***00Connector,Green-Yellow1
MH***56Hose1
MH***00Connector,Black-Yellow1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Piping (L.H. Ppc Valve Line 1/2) (For Ec)
20***10Switch,Swing And Boom Oil Pressure1
MH***00Adapter1
MH***10O-Ring1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Piping (L.H. Ppc Valve Line 2/2) (For Ec)
MH***45Hose1
MH***27Hose1
MH***30Elbow5
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Piping (R.H. Ppc Valve Line 1/2) (For Ec)
20***10Switch,Swing And Boom Oil Pressure1
MH***00Adapter1
MH***10O-Ring1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Piping (R.H. Ppc Valve Line 2/2) (For Ec)
MH***29Hose1
MH***29Hose1
MH***30Elbow4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Piping (Return Line) (For Ec)
MH***40Hose,Swing1
MH***52Hose,Swing1
MH***10Hose,Swing1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Piping (Suction Line) (For Ec)
MH***00Hose1
MH***00Filter Ass'Y,Suction1
MH***00Hose1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Piping (Swing Line) (For Ec)
07***23O-Ring,(Crusher?Other Att.For Ppc Con1
07***34O-Ring,(Not Used When (B) Spec.)1
07***34O-Ring, O-Ring,Drain Plug? R.H. Half Tank1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Piping (Telescope Cylinder Line) (For Ec)
MH***00Connector,Green-Yellow1
MH***60Joint,Swivel2
MH***00Connector,Black-Yellow1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Piping (Travel Line)
07***23O-Ring,(Crusher?Other Att.For Ppc Con2
07***34O-Ring,(For 2-Actuater Attachment)4
MH***00Hose1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Piping (Travel Ppc Valve Line) (For Ec)
MH***00Adapter1
MH***77Hose1
MH***72Hose1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Piping (Winch Brake And 3-Section Solenoid Valve Line) (For Ec)
MH***45Hose1
MH***50Connector1
MH***30Elbow1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Piping (Wintch Line) (For Ec)
MH***68Hose1
MH***00Connector,Green-Yellow2
MH***00Valve Ass'Y,Winch1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Tank (Mounting)
MH***00Grommet2
MH***00Band Ass'Y2
MH***00Sheet,Rubber (Bonded)6
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Hydraulic Tank (Tank)
MH***00Filter Ass'Y,Return2
MH***24Pipe Ass'Y2
MH***21O-Ring1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Main Pump
MH***00Pump Ass'Y1
MH***03Washer,Spring4
MH***70Bolt4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Hydraulic System : Main Valve (Mount Bracket)
MH***10Nut4
MH***00Control Valve Ass'Y1
MH***02Washer? Spring,(M10)8
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Main/Revolving Frame And Related Parts
Komatsu : Lc755-3-Me(S/N 30001-Up) : Main/Revolving Frame And Related Parts : Revolving Frame
MH***00Weight,Additional1
MH***20Bolt4
MH***55Trim2
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Marks And Plates
Komatsu : Lc755-3-Me(S/N 30001-Up) : Marks And Plates : Marks And Plates (English) (For Ec)
09***00Tag,(For South And North America)1
20***60Plate? Caution,Hydraulic Oil Tank Cap1
20***80Plate? Caution,Window Automatic Lock1
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Operator'S Compartment And Control System
Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Car Cooler (Compressor And Mount)
01***20Bolt,(For Mono Lever Steering)3
01***30Bolt,(With Body Positioner)4
01***35Bolt,(F4320-52a0 -5 )2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Car Cooler (Condenser And Receiver)
01***14Screw6
01***16Bolt - Box Mounting2
01***16Bolt - Seat And Tether Belt Mounting6
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Car Cooler (Cooler Hose)
01***16Bolt - Box Mounting4
01***23Washer,(With Auto Emergency Steering)4
08***04Conduit1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Car Cooler (Cooler Unit? Mount And Piping)
01***16Bolt - Box Mounting1
01***20Bolt,(Without Air Con.)4
01***23Washer,(Without Air Con.)4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Car Heater (Mounting And Hose)
09***00Clamp,(With Car Heater)4
20***10Heater Ass'Y1
MH***00Hose1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Compressor
20***80Compressor Ass'Y1
TW***30Compressor1
TW***90Bolt3
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Cooler Unit
21***10Cooler Ass'Y1
TW***00Clamp,Tube1
TW***70Switch,Fan1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Floor Frame (Acceleration Control) (Accelerator Lever)
MH***00Cable,Accelerator1
MH***25Bolt2
MH***02Washer,Spring2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Floor Frame (Acceleration Control) (Accelerator Pedal)
MH***00Link2
MH***10Nut2
MH***00Pin,Arm1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Floor Frame (Floor Frame)
01***90Capscrew4
01***45Washer,(For Travel Motor) (Not Show)4
07***25O-Ring,Corrosion Resistor4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Floor Frame (L.H. And R.H. Control Lever)
20***10Switch,Swing And Boom Oil Pressure1
MH***20Bolt8
MH***00Control Lever Group,Crane0
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Floor Frame (L.H. Side Instrument Panel)
MH***00Box,Control Lever1
MH***06Washer4
MH***10Nut1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Floor Frame (Operation Box) (For Ec)
20***20Adjuster,L.H1
20***30Adjuster,R.H1
20***05Seat Ass'Y,Operator'S1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Floor Frame (R.H. Side Instrument Panel)
MH***10Nut2
MH***06Washer3
MH***15Bolt4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Floor Frame (Travel Control)
20***10Switch,Swing And Boom Oil Pressure1
MH***00Travel Control G0
MH***00Block,Lever2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Front Guard (Half Guard)
01***25Bolt,(For Canvas Canopy?Head Guard)4
01***32Washer,(With Auto Emergency Steering)4
20***80Guard,Front1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Heater Unit
20***10Heater Ass'Y1
ND***41Radiator1
ND***11Clamp1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Accessory Parts)
01***16Screw,(Sandy And Dusty Terrain S.)2
01***20Screw2
01***05Washer,(Without Window Washer)2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Am Radio)
01***08Screw - Holder4
01***10Screw,(For Wiper Switch Earth)3
01***08Washer,(For Fixed Type Ripper)7
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Bracket)
01***16Bolt - Seat And Tether Belt Mounting4
01***20Bolt, Wiring Harness Mounting Bracket4
01***12Screw,(Additional Sun Visor)6
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Cab) (With Half Guard)
01***12Screw,(For Side Lamp) (Not Shown)4
01***12Screw,(With Articulate Indicator)2
01***12Screw,(Not Shown) (For Std Cab)3
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Door 1/2)
01***16Bolt - Box Mounting4
01***08Screw - Clip Mounting5
01***12Screw,(Wa320-1m?1p)4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Door 2/2)
01***10Bolt,(With Auto Emergency Steering)12
01***16Bolt - Seat And Tether Belt Mounting7
01***25Bolt,(Without Gps Antenna Bracket)4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Mount)
01***40Bolt (Op)5
01***80Bolt,(With Corrosion Resistor)4
01***05Capscrew2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Pull Up)
01***16Bolt, Battery To Frame Ground Wire Attaching2
01***12Screw,(Not Shown) (For Std Cab)2
01***16Screw5
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Rail)
01***16Bolt - Box Mounting12
01***20Bolt, Wiring Harness Mounting Bracket4
01***08Washer,(For 1 Attachment And Pat)12
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Service Kit And Component Parts
Komatsu : Lc755-3-Me(S/N 30001-Up) : Service Kit And Component Parts : Service Kit
MH***11Ring,Back-Up (Kit)2
MH***-0O-Ring (Kit)2
MH***20O-Ring (Kit)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Service Kit And Component Parts : Shoe Bolt And Nut Service Kit
11***21Nut? Shoe (Y0320-K3)50
20***21Shoe Bolt And Nut K1
20***11Bolt? Shoe (Y0320-K1)50
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Service Kit And Component Parts : Shoe Bolt And Nut Service Kit (Road Liner)
01***40Bolt50
01***11Nut,(For Center Guard)50
21***00Shoe Bolt And Nut K.,Road Liner1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Service Kit And Component Parts : Swing Motor (1/2)
04***18Ring,Snap (Itl)1
07***34O-Ring,(For 2-Actuater Attachment)2
70***20Bushing2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Service Kit And Component Parts : Swing Motor (2/2)
07***16O-Ring,Suction And Relief Valve1
07***34O-Ring,(For 2-Actuater Attachment)1
70***50Valve Ass'Y,Relief2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Service Kit And Component Parts : Track Link (Supply Parts)
10***71Seal,Dust? Regular? W-Type148
10***81Seal,Dust? Master? W-Type8
20***20Link,Track? L.H78
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Service Kit And Component Parts : Travel Motor (1/3) (Hydraulic Motor)
04***93Ball,Steel2
06***03Bearing,Ball1
21***00Travel Motor Ass'Y1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Service Kit And Component Parts : Travel Motor (2/3) (Brake Valve)
01***30Screw8
07***16O-Ring,Suction And Relief Valve2
07***34O-Ring,(Not Used When (B) Spec.)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Service Kit And Component Parts : Travel Motor (3/3) (Final Drive)
04***12Ring, Snap (4)3
04***52Ball,Detent1
07***07O-Ring - (K10)4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Service Kit And Component Parts : Winch Motor (1/2)
MH***10Pin1
MH***70O-Ring (Kit)2
MH***02Ring,Snap3
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Service Kit And Component Parts : Winch Motor (2/2)
MH***40Pin2
MH***00Plug2
MH***30Bolt6
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Swing Circle And Related Parts
Komatsu : Lc755-3-Me(S/N 30001-Up) : Swing Circle And Related Parts : Slope Alarme
MH***10Nut2
MH***35Bolt2
MH***02Washer,Spring2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Swing Circle And Related Parts : Swing Circle
01***80Screw48
04***38Pin, Dowel2
07***00Fitting, Grease - Upper Hinge Pin2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Swing Circle And Related Parts : Swing Machinery (Machnery)
04***12Ring, Snap (4)6
07***65Seal,Oil Output Shaft1
07***00Fitting, Grease (Steering Cylinder)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Swing Circle And Related Parts : Swing Machinery (Related Parts)
01***00Bolt,(For Front Brake Release)12
01***32Washer,(With Auto Emergency Steering)12
07***08Plug,See Fig. K4010-63a01
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Swing Circle And Related Parts : Swing Machinery And Motor
01***45Bolt,(For 60ton Dump Body)8
01***45Washer,(For Travel Motor) (Not Show)8
04***38Pin, Dowel2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Swing Circle And Related Parts : Swivel Joint (Mount Parts)(#30001-30021)
01***35Bolt, Mount Ground Driven Steering Pump2
01***32Washer,(Not Used With Emergency Str.)2
21***71Plate1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Swing Circle And Related Parts : Swivel Joint (Mount Parts)(#30022-)
01***35Bolt, Mount Ground Driven Steering Pump2
01***26Washer,Spring2
01***32Washer,(Not Used With Emergency Str.)2
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Travel And Lower Piping
Komatsu : Lc755-3-Me(S/N 30001-Up) : Travel And Lower Piping : Final Drive
01***40Bolt,(For Slag Handling) (For Usa)24
01***45Washer,(For Travel Motor) (Not Show)24
(2***0)Travel Motor Ass'Y,(See Fig.Y1651-01a0)2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Travel And Lower Piping : Lower Hydraulic Line
07***23O-Ring,(For 2nd Travel Speed) (Op)5
07***34O-Ring,(For Without Brake Assistor)2
07***34O-Ring,(For 2-Actuater Attachment)8
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Travel And Lower Piping : Sprocket
01***45Washer,(For Quick Shift) (Mitsubishi)24
20***30Bolt24
21***10Sprocket2
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Under Carriage
Komatsu : Lc755-3-Me(S/N 30001-Up) : Under Carriage : Carrier Roller
01***85Bolt - Flange Mounting2
01***45Washer,(For Travel Motor) (Not Show)2
04***15Ring, Snap1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Under Carriage : Front Idler
Komatsu : Lc755-3-Me(S/N 30001-Up) : Under Carriage : Idler Cushion (With Rubber Shoe)
01***75Bolt - Mount 1st Clutch Housing8
01***45Washer,(For Quick Shift) (Mitsubishi)8
04***15Ring,Back-Up2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Under Carriage : Idler Cushion (With Steel Shoe Or Road Liner)
01***75Bolt - Mount 1st Clutch Housing8
01***45Washer,(For Quick Shift) (Mitsubishi)8
04***15Ring,Back-Up2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Under Carriage : Rubber Shoe (450mm Wide)
Komatsu : Lc755-3-Me(S/N 30001-Up) : Under Carriage : Track Frame
Komatsu : Lc755-3-Me(S/N 30001-Up) : Under Carriage : Track Frame Cover
01***25Bolt,(For Canvas Canopy?Head Guard)8
01***30Bolt,(Not Used When Towing Winch)4
01***08Nut,(For Canvas Canopy?Head Guard)2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Under Carriage : Track Guard (With Rubber Shoe)
07***18Plug,(With Extinguisher) (D31p)16
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Under Carriage : Track Guard (With Steel Shoe Or Road Liner)
01***35Capscrew - M14 (1)/(2)16
01***45Washer,(For Quick Shift) (Mitsubishi)16
21***10Guard4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Under Carriage : Track Roller
01***65Bolt40
01***45Washer,(For Quick Shift) (Mitsubishi)40
07***32O-Ring,Drain Plug? Main Clutch1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Under Carriage : Track Shoe (Road Liner) (450mm Wide)
01***40Bolt312
01***11Nut,(For Center Guard)312
10***71Seal,Dust? Regular? W-Type148
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Under Carriage : Track Shoe (Triple Grouser With Hole) (450mm Wide)
10***73Bushing,Master4
10***71Seal,Dust? Regular? W-Type148
10***81Seal,Dust? Master? W-Type8
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Under Carriage : Track Shoe (Triple Grouser With Hole) (For City Pad) (450mm Wide)
10***71Seal,Dust? Regular? W-Type148
10***81Seal,Dust? Master? W-Type8
11***21Nut? Shoe (Y0320-K3)312
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Work Equipment
Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Boom (1/5) (1st Boom)
MH***01Shim? 1.0mm,Foot Pin2
MH***00Pin,Derrick Cylinder Rod1
MH***10Nut4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Boom (2/5) (2nd Boom)
MH***00Plate,Slide? Rear Side2
MH***10Nut4
MH***04Ring,Snap2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Boom (3/5) (3rd Boom)
MH***00Pin,No.5 Boom Extended Rope1
MH***00Pin,Telescope Cyl. Guide Roller1
MH***10Nut4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Boom (4/5) (4th Boom)
MH***00Coller,No.5 Boom Retraction Sheave2
MH***00Pin,Telescope Cyl. Guide Roller1
MH***00Plate,Slide? Rear Side2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Boom (5/5) (5th Boom)
MH***00Plate,Slide? Rear Side2
MH***14Bolt4
MH***10Nut4
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Derrick Cylinder (Counter Balance Valve)
MH***-0Valve Ass'Y,Counter Balance1
MH***-0O-Ring (Kit)1
MH***-1Ring,Snap1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Derrick Cylinder (Cylinder)
MH***16Orifice1
MH***00O-Ring (Kit)1
MH***05Ring,Back-Up (Kit)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Derrick Cylinder (Rod Guard)
MH***30Bolt2
MH***00Guard,Rod1
MH***25Pin,Spring2
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Hook Block (1.22 Ton)
MH***00Plate,End1
MH***12Bolt1
MH***12Pin,Cotter1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Hook Block (2.45/4.9 Ton)
MH***35Bolt2
MH***00Cover,Top1
MH***16Stopper Ass'Y,Rope1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Hook Holding Cam
MH***00Holding Cam Ass'Y1
MH***00Roller Ass'Y1
MH***15Bolt1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Telescope Cylinder (Counter Balance Valve)
MH***-0O-Ring (Kit)1
MH***-1Ring,Snap1
MH***-0Valve Ass'Y,T Counter Balance1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Telescope Cylinder (Cylinder)
MH***07Piston,No.11
MH***14Tube,No.2 Cylinder1
MH***70Bolt1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Telescope Cylinder (Mechanical Check Valve)
MH***-0Service Kit,T.Cyl. Mechanical Check Valve1
MH***00Check Valve Ass'Y,Mechanical1
MH***-0O-Ring (Kit)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Telescope Cylinder (Sequence Valve)
MH***-0Service Kit,T.Cyl. Sequence Valve1
MH***-1Valve Ass'Y,Sequence1
MH***-0O-Ring (Kit)1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Winch (Mounting And Snap Sheave) (For Ec)
MH***00Collar2
MH***00Wedge1
MH***00Arm,Roller1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Winch Falling Stop System (For Ec)
MH***00Bracket,Arm1
MH***00Plate,Limit Switch1
MH***00Plate,Limit Switch1
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Komatsu : Lc755-3-Me(S/N 30001-Up) : Work Equipment : Winch Wire Rope Guard

Frequently asked questions

What engine does the LC755-3-ME use?

The LC755-3-ME uses a Komatsu 4D102E engine rated at 40.5 kW (55 PS) at 1,750 rpm.

What is the operating weight?

The transportable weight is approximately 9,600 kg.

What replaced the LC755-3-ME?

Komatsu no longer manufactures telescopic cranes, including the LC755 series. The company has shifted its focus to other construction and mining equipment lines.

What LC755-3-ME(S/N 30001-UP) owners discuss

What is the specific engine designation and power rating for the Komatsu LC755-3-ME(S/N 30001-UP)?
The machine uses a Komatsu 4D102E 4-cylinder diesel engine. The rated power is 40.5 kW (55 PS) at 1,750 rpm. This engine provides the hydraulic power for the 5-section telescopic boom and travel motors. The fuel tank capacity is 140 liters (37.0 gal). Note: Some general LC755 database entries cite 59.3 hp at 2,000 rpm; this varies by configuration/series. The 4D102E specification is the primary source for the LC755-3 series.
What are the typical undercarriage and wear patterns for this mini crawler crane?
The LC755-3-ME is mounted on a crawler base with 450 mm-wide tracks and a total ground contact length of 2,235 mm. It exerts a low ground pressure of 0.32 kgf/cm² (4.56 psi). Common wear items include the track pads, bushings, and bearings. Worn bushings lead to noise and vibration. Worn bearings cause premature track failure. The undercarriage includes independent hydraulic drive motors and sprocket/crawler drive with built-in braking. Track tension should be checked regularly as repeated loosening indicates adjuster or component wear.
What are the known hydraulic behaviors and common failure modes for this series?
A common diagnostic pattern is hydraulics working cold but becoming weak when hot, indicating excessive internal leakage in the pump, main control valve, or cylinders as viscosity decreases. If all functions (boom, arm, swing, travel) are slow, check hydraulic oil level, specification, filters, and engine RPM. If only one function is slow, investigate the specific cylinder, control valve spool, or load-holding valve. The main safety valve is critical; slow heating or poor performance often requires grinding and repairing the main safety valve. Leaks in hydraulic lines or cylinders are frequently caused by worn seals or improper installation.
What electrical or sensor issues are commonly reported for Komatsu machines of this era?
Komatsu excavators and cranes of this generation rely heavily on electronic control systems. A single faulty sensor or unstable power supply can trigger multiple warning signals. Owners often report intermittent starting, dashboard failure, or machines that randomly shut down. Multiple fault codes often point to battery issues, poor grounds, or connector problems. The machine is equipped with electronic monitoring systems for hoist drum rotation and other key operations; these sensors must be verified for functionality.
What are the engine quirks or power loss symptoms specific to the 4D102E series?
Engine performance issues dominate serious problems. A loss of power, increased fuel usage, or overheating may signal airflow restriction, injector wear, or failing fuel delivery components. If the engine drops heavily in RPM whenever hydraulics are used, the hydraulic system may be placing excessive load on the engine, or the engine may be unable to produce expected power. Check air filters, fuel filters, fuel tank venting, and charge-air hoses. Black smoke from the exhaust is also a common symptom of fuel system issues.
What is the lifting capacity and boom configuration for the LC755-3-ME(S/N 30001-UP)?
The LC755 is a 4.9-ton capacity mini crawler crane. It features a fully hydraulic 5-section telescopic boom that extends from 4.56 meters (14.96 ft) to 15.56 meters (51.05 ft). The maximum lifting height is 16.35 meters (53.64 ft) with a working radius reaching up to 14.45 meters (47.41 ft). The boom elevation angle ranges from -2° to 80°. Lifting is supported by four-part reeving using a 6xFi (29) IWRC wire rope, 10 mm in diameter and 115 meters in length. Hoisting speeds are 21.5 m/min and 32.5 m/min.
What to check when buying a used LC755-3-ME(S/N 30001-UP)?
Verify the exact serial-prefix specification sheet and installed attachment package. Check the engine oil level and cooling system for blockages or leaks. Test the battery with a multimeter and check for intermittent starting or dashboard failures. Inspect hydraulic lines and cylinders for leaks and worn seals. Check track tension and undercarriage wear (rollers, chain, pads). Verify the functionality of the integrated load moment limiter (LMI) and anti-two block system. Ensure the swing brake holds position and there is no mechanical play in the swing system. Have your dealer verify the main safety valve condition and hydraulic pump pressure if performance is suspect.

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

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