When a main hydraulic pump loses pressure, the housing is often still perfectly serviceable. The real culprits are worn internal components — rotating groups, valve plates, and cylinder barrels that have simply reached their service limit. Replacing key internals is a highly cost-effective way to restore your Komatsu excavator's hydraulic performance without the cost of a complete pump.
We supply a comprehensive range of precision-engineered internal components for main pumps used across the Komatsu PC / PW series lineup — including PC-1 through PC-8 Series (legacy), PC-10 and PC-11 Series (current) and current generation models.
Why Rebuild with Our Komatsu Pump Parts?
- Micron-Level Precision: Every component is manufactured to exact OEM dimensional tolerances, ensuring new parts integrate seamlessly with your existing pump housing.
- Complete Rotary Group Kits: We package cylinder block, pistons, valve plate, and set plate together so you can source everything for a full overhaul in a single order.
- In-Stock Availability: We maintain local warehouse stock of the most commonly required rebuild components for Komatsu machines, minimising your wait time.
Give our team your Komatsu machine model, serial number, or the data tag from your pump casing — and we'll identify the exact internal parts you need to get back to work