Komatsu's HPV series pumps power the world's most widely deployed excavators — the HPV95 drives the PC200/PC210 class, HPV132/HPV145 handles PC300/PC350, and the HPV160 delivers maximum output for the largest production excavators like the PC400-7. All three use the same 708-series part numbering logic and the same fundamental wear pattern: after roughly 6,000-8,000 operating hours, symptoms appear gradually — slightly more noise, marginally slower cycle times, higher operating temperature — before eventually progressing to error codes or unacceptable performance loss.
PC400-7 Pump — Specification Reference
| Spec | Value |
|---|
| Pump Model | HPV160 |
| Max Operating Pressure | 350 bar |
| Flow Rate | ~266 LPM |
| Displacement | 160 cc/rev |
| Equipment Class | Large production excavator |
Confirm your exact generation and pump nameplate before ordering — WhatsApp a photo for a precise match.
Watch For: "Hot Running" Symptoms
A pump that runs hotter than it used to is often the earliest sign of internal wear on the HPV series.
| Symptom | Likely Cause |
|---|
| Hydraulic oil running hotter than usual (70°C+) | Worn LS valve spools, sticking PC valves, or internal cylinder block leakage |
| Slightly slower cycle times | Early-stage internal wear — worth monitoring |
| Progressively louder operation | Advancing wear in the piston/cylinder block assembly |
As oil temperature rises, internal clearances change and already-worn components begin leaking more — which is why "running hot" tends to get progressively worse rather than staying stable once it starts.
What Our Quality Process Covers
Piston & Cylinder Block AssemblyMeasured against Komatsu's original HPV160 tolerance specification.
LS Valve Spool & PC Valve InspectionChecked specifically for the wear patterns that cause hot-running symptoms.
Shaft Seal & All O-ringsReplaced as standard on every unit.
Bench Pressure & Flow TestVerified at 350 bar rated pressure, output documented on the written test report.
We Supply Across India
FAQs — Komatsu PC400-7 Pump
My PC400-7's hydraulic oil runs hotter than it used to — is this urgent?
Worth addressing before it worsens. Rising oil temperature is often the earliest sign of internal wear, and once clearances change from heat, already-worn components tend to leak more — creating a cycle that gets progressively worse. Have it checked rather than waiting for an error code or performance drop.
Does the HPV160 share parts with the smaller HPV95 or HPV132 used on other PC models?
They share the same fundamental architecture and 708-series part numbering logic, but individual components are sized differently across the range — always confirm your exact part number rather than assuming cross-compatibility.
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