Honour Time Machinery Limited is your trusted partner for reliable diesel engine components and heavy equipment hydraulic parts. Our expertise covers Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai engine assemblies and spare parts. We specialize in providing the highest quality OEM quality replacement valve solutions for excavator engine overhaul kits and routine swift delivery engine parts across the globe.
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We proudly offer the high-precision aftermarket Main Relief Valve, specifically designed for the Komatsu PC200-6-7 Excavator. This component is critical for maintaining optimal hydraulic pressure, ensuring smooth and reliable operation of your heavy equipment. Our replacement valve provides a perfect fit and dependable performance, often resolving common hydraulic system malfunctions. The official part numbers are 723-40-56302 and the stripped version 7234056302.
Use for excavator or construction machinery: Guaranteed compatibility with the Komatsu PC200-6-7 model.
OEM Quality Alternative: Manufactured to strict specifications for reliability and longevity, matching the performance of the original Komatsu spare parts.
High Durability: Constructed with wear-resistant materials to withstand high operating pressures and temperatures in demanding construction machinery maintenance environments.
Precision Pressure Control: Ensures the hydraulic system operates within safe limits, preventing component damage and providing accurate machine control.
Direct Fit Replacement: Easy installation with no modifications required, minimizing machine downtime for quick repair.
| Product Name | Brand | Machine Model | Part Number (Official) | Part Number (No Hyphen) |
|---|---|---|---|---|
| Main Relief Valve | Komatsu | PC200-6-7 | 723-40-56302 | 7234056302 |
| Float Switch | Komatsu | PC Series | 7861-92-4800 | 7861924800 |
Honour Time Machinery Limited is your trusted partner for reliable diesel engine components and heavy equipment hydraulic parts. Our expertise covers Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai engine assemblies and spare parts. We specialize in providing the highest quality OEM quality replacement valve solutions for excavator engine overhaul kits and routine swift delivery engine parts across the globe.
3D82, 3D84, 4D84, 4D95, 4D105
6D95, 6D102, 6D105, 6D108, 6D110, 6D114, 6D170
J05E, J08E, 6D16, 6D16T
6D22T, 6D24T, 6D34, 6D34T
3114, 3116, C4, C6, C7
3064T, S6K, C-9, C13
4D34, 4D24, 6D16, 6D24, 6D40
K4M, S3Q2, S4KT
3LD1, 4LE1, 4LE2, 4JB1, 4BG1
6BG1, 4HK1, 6HK1, 6SD1, 6WF1, 6WG1
4D88E, 4TNE84, 4TNE88, 4TNV88
4TNE94, 4TNV94L, 4TNV98, 4TNV106
J05E, J08E, V25C, V21C
EF750, P11C, H06CT, H07D
Cummins: QSB6.7, QSM11, QSM11-C, B5.9-C, B3.9-C, C8.3-C
Volvo: D6D, D6E, D7D, D7E, D9E, D12D, D12E, D16D
| Field | Details |
|---|---|
| Model NO. / Product Name | PC200-6-7 Main Relief Valve / Float Switch |
| Application | Excavator, Construction Machinery |
| Certification | ISO 9001 Compliant Production Standards |
| Condition | New, High-Quality Aftermarket |
| Origin / Specification | China / OEM Standard |
| Production Capacity | 5000 PCS/Year (Ensuring Stable Supply) |
| Transport Package | Secure Carton Packaging for Global Shipping |
| Payment Terms | T/T, Western Union, MoneyGram (Flexible Payment Options) |
| Delivery Methods | Express: DHL, FedEx, EMS, UPS or by Air / Sea (Global, swift delivery engine parts) |
Connecting Rod: Connects the piston to the crankshaft. Cummins QSB6.7 Connecting Rod.
Piston Ring: Seals the combustion chamber and transfers heat. Komatsu 6D102 Piston Ring.
Crankshaft Bearing: Supports the crankshaft within the cylinder block. Caterpillar 3116 Crankshaft Bearing.
Turbocharger: Compresses the air entering the engine. Isuzu 4HK1 Turbocharger.
Fuel Injector: Sprays diesel fuel into the combustion chamber. Kubota V2203 Fuel Injector.
Water Pump: Circulates coolant through the engine. Yanmar 4TNV98 Water Pump.
Oil Pump: Circulates oil for engine lubrication. Weichai WP10 Oil Pump.
Accelerator Motor: Controls the engine throttle electronically. Komatsu PC200-8 Accelerator Motor.
Valve Seat: Provides a sealing surface for the engine valves in the cylinder head. Caterpillar C9 Valve Seat.
Flameout Solenoid: Cuts off the fuel supply to shut down the engine. Kubota 4TNV88 Flameout Solenoid.
Fault Description: The engine temperature gauge on a Komatsu PC300-7 often enters the red zone under heavy load, leading to a temporary loss of power and safety shutdown.
Processing Solution: First, check the coolant level and system for external leaks. If those are fine, inspect the Radiator and Oil Cooler fins for blockage from dust or debris, which severely limits heat exchange. If cleaning the coolers does not resolve the issue, the Water Pump or Thermostat may be failing, restricting coolant flow. Replacing the faulty component with a high-quality aftermarket Komatsu replacement part will restore the engine cooling efficiency.
Daily Check: Inspect oil level, coolant level, and look for any visible leaks or damage to hydraulic hoses and cylinders.
250 Hour Service: Change engine oil and replace the engine oil filter and fuel filter. Lubricate all grease points.
500 Hour Service: Replace hydraulic filter element, check battery electrolyte, and inspect all belts (Engine Drive Belt) for tension and wear.
1000 Hour Service: Replace the Liner Kit (Engine Overhaul) components like piston rings if compression is low. Replace the coolant and clean the radiator/oil cooler.
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