Looking for reliable excavator spare parts to solve abnormal hydraulic pressure and electrical failures? Honour Time Machinery Limited provides high-quality China-made replacements and OEM parts for major brands including Hitachi and Komatsu. Our products solve common equipment issues like slow movement, low hydraulic power, and sensor malfunctions.
We are a leading source factory and exporter for engine components. We provide Factory Direct Sales and support Custom Development for various engine liners.
Cummins 6BT Engine Cylinder Liner - Precision fit for industrial power.
Caterpillar 320D C6.6 Cylinder Sleeve - Wear-resistant high performance.
Komatsu PC200-8 6D107 Engine Liner - Advanced heat dissipation.
Isuzu 4HK1 Excavator Engine Liner - Long-lasting durability.
| No. | Part Number | Alt Part Number | Product Name | Application Model | Performance Benefit |
|---|---|---|---|---|---|
| 1 | 4372034 | 4372034 | Main Relief Valve | Hitachi Excavator | Solves low hydraulic pressure issues |
| 2 | 7861-92-4800 | 7861924800 | Float Switch | Komatsu PC Series | Ensures accurate fluid level monitoring |
Engineered for high-pressure hydraulic environments in construction machinery.
Direct replacement for OEM parts with strict quality control standards.
Plug-and-play installation for Hitachi and Komatsu excavator systems.
Enhanced wear resistance for extreme working conditions in North America and Europe.
Cost-effective China-made high-quality alternative solving original part failures.
| Category | Available Engine Parts |
|---|---|
| Liner & Piston | Liner Kit, Piston, Piston Ring, Engine Bearing, Cylinder Block |
| Gasket & Seal | Gasket Kit, Gasket Head, Valve Guide, Valve Seat |
| Electrical & Control | Pressure Switch, Flameout Solenoid, Monitor, Accelerator Motor, Transmitter |
| Cooling System | Radiator, Fan Cooling, Belt, Water Pump, Oil Pump |
| Fuel & Turbo | Nozzle, Injector, Diesel Pump, Turbocharger, Main Valve |
| Brand | Model List |
|---|---|
| Komatsu | 3D82, 3D84, 4D105, 6D95, 6D108, 6D110, 4D84, 4D95, 6D102, 6D105, 6D114, 6D170 |
| Caterpillar | 3114, 3116, C4, C6, 3064T, S6K, C7, C-9, C13 |
| Isuzu | 3LD1, 4LE1, 4BG1, 4HK1, 6SD1, 6WG1, 4LE2, 4JB1, 6BG1, 6HK1, 6WF1 |
| Yanmar | 4D88E, 4TNE84, 4TNV88, 4TNV94L, 4TNE88, 4TNE94, 4TNV98, 4TNV106 |
| Mitsubishi | 4D34, 4D24, K4M, S3Q2, 6D16, 6D24, S4KT, 6D40 |
Caterpillar 320D Fuel Injector: Installed in the cylinder head to atomize diesel fuel for combustion.
Komatsu PC300 Main Relief Valve: Located on the control valve bank to regulate maximum system pressure.
Cummins 6BT Turbocharger: Mounted on the exhaust manifold to increase air intake efficiency.
Isuzu 6HK1 Water Pump: Installed on the front of the engine block to circulate coolant.
Yanmar 4TNV98 Piston Rings: Located in the piston grooves to seal the combustion chamber.
Kubota V2203 Glow Plug: Installed in the cylinder head to assist cold starts.
Weichai WP10 Oil Pump: Located inside the oil pan to provide lubrication pressure.
Hitachi ZX200 Hydraulic Filter: Installed in the return line to remove contaminants.
Volvo EC210 Crankshaft: Positioned at the bottom of the engine block to convert reciprocating motion.
Caterpillar D8R Track Link: Part of the undercarriage system for crawler propulsion.
Common Issue: Low Power in Hitachi ZX200 Excavator.
Solution: Check the Main Relief Valve (Part No. 4372034). If the internal spring is worn or the poppet is stuck, hydraulic pressure will bleed off. Replacing it with our high-quality valve restores full digging force. Also, ensure the hydraulic oil is changed every 2000 hours to prevent valve clogging.
| Model NO. | 4372034 / 7861-92-4800 | Certification | ISO9001 / CE |
| Application | Excavator Construction | Condition | New Replacement |
| Origin | China | Capacity | 5000PCS/Year |
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