Komatsu PC200-8 Wiring Harness 3979318 / 3976418 & Float Switch 7861-92-4800:
High-Quality Chinese Replacement Solves Electrical & Level Sensor Faults

Komatsu PC200-8 3979318 Wiring Harness | Komatsu PC300-7 7861924800 Float Switch | Caterpillar 320D Liner Kit | Cummins QSB6.7 Liner Kit

Cylinder Liner Customization & Engine Rebuild Solutions

We are the Source Manufacturer and offer Factory Direct Sales for various engine components, including Liner Kits, Piston Ring sets, and Engine Bearings. We support customization and development of cylinder liners for all major diesel engine brands, ensuring high-quality aftermarket engine components for global Export markets.

Weichai WP10 Liner Kit | Kubota V3307 Liner Kit | Yanmar 4TNV98 Liner Kit | Isuzu 6BG1 Liner Kit

Essential Komatsu Electrical System Components

We specialize in providing reliable construction machine parts for maintaining optimal performance of your Komatsu heavy machinery. Our stock includes the critical Komatsu Wiring Harness and the precision Komatsu Float Switch, essential for ensuring accurate data transmission and safety. These parts are critical for excavator electrical system components, minimizing downtime and maximizing productivity.

Featured Komatsu Products:

  • Komatsu Wiring Harness: Part Numbers 3979318 and 3976418 (also available as 3979318 and 3976418 without separators). Essential for reliable power distribution in your diesel engine rebuild solutions.

  • Komatsu Float Switch: Part Number 7861-92-4800 (also available as 7861924800). High-accuracy sensor for monitoring fluid levels (e.g., fuel or coolant).

Product Features:

  1. OEM Quality Materials: Constructed with durable, high-grade materials to match or exceed original equipment standards.

  2. Precise Fitment for PC Series: Wiring Harness (3979318, 3976418) is designed for seamless integration into Komatsu excavators.

  3. Reliable Fluid Monitoring: Float Switch (7861-92-4800) provides accurate, fail-safe level detection.

  4. Use for Excavator or Construction Machinery: Suitable across a wide range of Komatsu construction equipment models.

  5. Enhanced Signal Integrity: Harness 3979318 features superior insulation for robust electrical performance in harsh environments.

Komatsu Float Switch (P/N 7861-92-4800) Technical Specifications

AttributeDetail
Model NO.7861-92-4800 / 7861924800
ApplicationExcavator Hydraulic/Fuel Tank Level Monitoring
CertificationISO 9001, CE
ConditionNew, High-Quality Aftermarket
Product NameKomatsu Float Switch (Level Sensor)
Transport PackageCarton with Protective Foam
SpecificationHigh-Precision Electronic Sensor, 12V/24V Compatibility
TrademarkHonour Time Machinery Limited (HTM)
OriginChina
Production Capacity5000PCS/Year
Payment TermsT/T, Western Union, MoneyGram
Delivery MethodsExpress: DHL Fedex EMS UPS or by Air/Sea

Comprehensive Inventory: Engine Overhaul Kits and Components

Honour Time Machinery Limited is your one-stop solution for wholesale engine parts export. We supply complete excavator engine overhaul kits and individual components like CrankshaftTurbochargerFuel Pump, and Injector for the world's leading brands. Whether you need a Diesel engine rebuild solution for Isuzu 4HK1 cylinder head supplier needs or Caterpillar C7 fuel injector repair parts, we have the inventory.

Key Engine Components We Provide:

Liner Kit / Cylinder Liner
Piston / Piston Ring
Gasket Kit / Gasket Head
Crankshaft / Connecting Rod
Valve Guide / Valve Seat
Engine Bearing (Crankshaft Bearing, Connecting Rod Bearing, Thrust Washer)
Water Pump / Oil Pump
Pressure Switch / Monitor

Supported Engine Models:

BrandEngine Models
Komatsu3D82, 3D84, 4D105, 6D95, 6D108, 6D110, 4D84, 4D95, 6D102, 6D105, 6D114, 6D170
KOBELCOJ05E, 6D34T, 6D16, J08E, 6D22T, 6D24T, 6D16T, 6D34
CATERPILLAR3114, 3116, C4, C6, 3064T, S6K, C7, C-9, C13
Mitsubishi4D34, 4D24, K4M, S3Q2, 6D16, 6D24, S4KT, 6D40
ISUZU3LD1, 4LE1, 4BG1, 4HK1, 6SD1, 6WG1, 4LE2, 4JB1, 6BG1, 6HK1, 6WF1
Yanmar4D88E, 4TNE84, 4TNV88, 4TNV94L, 4TNE88, 4TNE94, 4TNV98, 4TNV106
HINOJ05E, J08E, V25C, EF750, P11C, V21C, H06CT, H07D
CUMMINSQSB6.7, QSM11-C, B5.9-C, B3.9-C, QSM11, C8.3-C
VOLVOD6D, D6E, D9E, D12D, D7D, D7E, D12E, D16D

Construction Machinery Parts Glossary (Long-Tail Keywords)

1. Piston Ring: Rings seated in grooves around the Piston in the Cylinder BlockKomatsu 6D102 Piston Ring Set.

2. Crankshaft Bearing: Half-shell bearings installed in the Cylinder Block main saddles to support the CrankshaftCaterpillar C7 Engine Bearing Set.

3. Gasket Head: A seal between the Cylinder Block and Cylinder HeadIsuzu 4BG1 Gasket Head Replacement.

4. Turbocharger: Air compressor driven by exhaust gases, installed in the Exhaust ManifoldWeichai WP10 Turbocharger Price.

5. Fuel Pump: Pumps fuel from the tank to the Injector rail. Located near the Engine BlockYanmar 4TNV98 Fuel Pump.

6. Water Pump: Circulates coolant through the engine and Radiator. Mounted on the Engine Block front. Kubota 4TNV88 Water Pump Replacement.

7. Accelerator Motor: Controls the engine speed (throttle position) in the Cab/Engine BayKomatsu PC200-8 Accelerator Motor.

8. Main Valve: Controls hydraulic flow to the actuators in the Hydraulic SystemMain Valve Assembly for Komatsu Excavator.

9. Nozzle (Injector): Atomizes fuel and injects it into the combustion chamber in the Cylinder HeadCummins QSB6.7 Injector Nozzle.

10. Flameout Solenoid: Stops the engine by cutting off the fuel supply, often near the Fuel PumpIsuzu 6WG1 Flameout Solenoid.

Engine Health: Troubleshooting and Maintenance Tips

Fault and Solution: Komatsu PC200-8 Engine Overheating

Fault: A Komatsu PC200-8 excavator engine (with a 6D107 engine) begins to overheat under load, even with adequate coolant visible in the reservoir. The temperature gauge spikes erratically.

Detailed Solution: This may indicate a failure in the Water Pump or, more commonly, a blockage in the Radiator or a faulty Thermostat. Check the radiator fins for dirt/debris (external cleaning is crucial). If the issue persists, test the water pump's function. In some cases, a cracked Cylinder Head or blown Gasket Head (part of a full Engine Overhaul Kit) can cause combustion gases to enter the cooling system, leading to overheating and erratic gauge readings. Timely replacement of components like the Kubota 4TNV88 water pump replacement is key preventative maintenance.

Essential Construction Machinery Maintenance:

Regular maintenance is essential for longevity. Always use an Excavator engine overhaul kit from a reliable source. Regularly inspect the Engine Bearing clearances, check the tension of the Belt, and monitor oil pressure. For engine components, only use OEM quality replacement parts. For hydraulic components, frequently inspect the oil level, often sensed by the Float Switch 7861-92-4800. This adherence to best practices ensures your equipment remains operational and extends the service life of high-value parts like the Crankshaft and Cylinder Block.

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Honour Time Machinery Limited Company Profile

Honour Time Machinery Limited is a trusted heavy equipment spare parts supplier specializing in reliable engine components for Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. We provide affordable and high-performance engine rebuild solutions globally, guaranteeing customer satisfaction and quality.

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