Main hydraulic pressure dropping or slow cycle times on your PC7000? A worn 90339140 pump lets the rotating group bypass internally, starving every circuit. RITO rebuilds this main pump to OEM clearances so your machine's dig force and speed come back from the first hour.
Item NO.:
90339140Order(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In Stock90339140 Excavator Main Hydraulic Pump for PC7000. Precision-machined barrel bores and lapped valve face restore volumetric efficiency, while the factory-calibrated regulator maintains stable pressure-flow output across the full working range.
| Part Number | 90339140 |
|---|---|
| Part Name | Excavator Hydraulic Main Pump (Piston Pump) |
| Compatible Brand | PC7000 Main Pump |
| Applicable Models | PC7000 Excavator |
| Application | Main hydraulic pump for PC7000 excavator all-function operation |
| Material | High-strength alloy steel |
| Product Color | Metallic industrial finish |
| Working Temperature | -25°C~+60°C |
| Key Function | Generates main hydraulic flow and pressure for PC7000 work circuits |
| Condition | 100% New Aftermarket OEM Quality |
| Packaging | Wooden Case Reinforced Carton Neutral Packing Customized Box |
The 90339140 cylinder block, pistons and shoes are machined to OEM clearance, restoring volumetric efficiency on the PC7000.
Barrel face and valve plate are surface-matched to Ra 0.2, eliminating break-in leakage on the PC7000 main circuit.
The regulator is pre-set to the PC7000 engine power curve, preventing overload during combined boom, swing and travel demand.
90339140 port configuration and flange are confirmed for the PC7000, providing direct bolt-on installation.
FAQ
Q: What symptoms indicate the 90339140 pump needs replacing on a PC7000?
A: Main circuit pressure falls below specification, all functions slow simultaneously, case-drain flow exceeds the OEM limit, and oil temperature rises faster than normal.
Q: Does the 90339140 pump include a matched valve plate?
A: Yes, this 90339140 assembly includes a new matched valve plate and rotating group, so the sealing interface is correct from installation.
Q: What other models does the 90339140 pump fit?
A: Cross-reference keywords 90339140 / Komatsu Main Pump / PC7000 Hydraulic Pump / Excavator Main Pump / Axial Piston Pump / Hydraulic Power Unit apply. Confirm your machine serial number with our team to verify compatibility with other models.
Q: How to confirm the 90339140 is the correct pump for my PC7000?
A: Match the pump model plate reading 90339140 and confirm the machine is PC7000. Provide pump and machine serial numbers to our team for exact confirmation.
Q: What quality options are available?
A: We provide original, OEM and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies
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