Product Details

PC200-6 Hydraulic Main Relief Valve for Komatsu

Premium Pressure Control Solution | Part Number 723-40-51102 & 7234051102

Reliable Hydraulic Performance for Your Excavator

Maintain peak hydraulic efficiency with our heavy-duty replacement Main Relief Valve designed specifically for Komatsu PC200-6 equipment. Whether you are dealing with pressure drops or sluggish boom movements, the 723-40-51102 is the critical component needed to restore your machine's breakout force.

Technical Specifications

Model NO.	PC200-6 (6D102 Engine Series)	Part Number	723-40-51102 / 7234051102
Product Name	Hydraulic Main Relief Valve	Type	Primary Pressure Control Valve
Condition	Brand New, OEM Standard Replacement	MOQ	1 Piece
Stock Status	In Stock / Fast Dispatch	Packaging	Industrial Export Packing
Application	Hydraulic system overhaul, maintenance, and engine rebuild support.
Payment Terms	T/T, Western Union, MoneyGram
Delivery Methods	Express: DHL, Fedex, EMS, UPS or by Air/Sea freight.

Procurement Analysis: OEM vs. Low-Cost Alternatives

Core Procurement Points	Our Premium 723-40-51102 Replacement	Standard Aftermarket Valves
Internal Sealing	High-precision grinding for zero-leakage performance.	Basic machining, prone to internal bypass.
Pressure Stability	Steady response even under extreme hydraulic loads.	Fluctuating pressure leads to erratic movements.
Material Hardness	Case-hardened steel for wear resistance.	Standard carbon steel, shorter service life.
Installation Fit	100% Direct Plug-and-Play for PC200-6.	Possible thread tolerance issues.
Response Time	Instant pressure relief to protect hydraulic pumps.	Delayed response, risks damaging the main pump.
Cost Efficiency	Balanced ROI with extended maintenance intervals.	Frequent replacements increase total downtime.

Hydraulic Troubleshooting & FAQ

Why is my Komatsu PC200-6 losing hydraulic power?

Weak hydraulic performance is often caused by a worn 723-40-51102 Main Relief Valve. When the internal spring or poppet fails, the valve cannot hold the required system pressure, causing fluid to bypass back to the tank prematurely. Replacing the valve is the most cost-effective fix before inspecting the main pump.

How to diagnose a faulty 7234051102 relief valve?

If you experience "stalling" under load or abnormal noise from the control valve bank, check the relief pressure with a gauge. If the pressure is significantly lower than factory specs and adjustment doesn't help, the 723-40-51102 needs immediate replacement.

Why Choose This Main Relief Valve?

Our units feature an OEM-standard tri-metal structure. This design ensures superior heat dissipation and structural integrity under high-cycle operations. We are trusted by repair shops and equipment fleets worldwide for providing parts that match the original machine's duty cycle.

Not sure how this issue affects your equipment?

Our technical team helps operators maximize uptime:

✔ Identify potential risks during routine hydraulic maintenance.
✔ Recommend suitable replacement parts tailored to your machine hours.
✔ Support both inspection advice and immediate parts supply.

Send Your Part Number for a Quick Quote

Our Professional Supply Scope: We specialize in complete engine assemblies and precision components for Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Our core inventory includes high-quality cylinder liners, pistons, piston rings, crankshaft bearings, connecting rod bearings, thrust washers, and full overhaul gasket kits. We also supply critical fuel system parts such as diesel injection pumps and fuel injectors, as well as heavy-duty crankshafts, turbochargers, water pumps, oil pumps, cylinder blocks, cylinder heads, and connecting rods.

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