Second pump section sluggish on your 320D2 or 323D2? A worn 318002 companion cylinder block erodes the flow balance between both K5V140 sections, making it impossible to sustain full combined-function work rate. RITO supplies this precision barrel to restore the companion section's displacement and rebalance K5V140 pump output.
Item NO.:
318002Order(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In Stock318002 Piston Pump Cylinder Block for Kawasaki K5V140 piston pumps on Caterpillar 320D2, 320D2GC, 320E and 323D2 excavators. Cross-reference: 318001 (companion section). While 318001 governs the primary circuit, 318002 supplies the secondary circuit flow. Matched lapping between barrel face and valve plate ensures immediate sealing efficiency after installation without a break-in leakage period.
| Part Number | 318002 |
|---|---|
| Part Name | Piston Pump Cylinder Block (K5V140, Companion Section) |
| Compatible Brand | TONG MYUNG (Kawasaki K5V140 Pump) |
| Applicable Models | 320D2, 320D2GC, 320D2L, 320E, 323D2 Excavator |
| Application | Companion section rotating group barrel of Kawasaki K5V140 piston pump |
| Material | High-strength alloy steel |
| Product Color | Silver machined metal finish |
| Working Temperature | -25°C~+60°C |
| Key Function | Generates secondary-circuit hydraulic flow to balance K5V140 dual-section pump output |
| Condition | 100% New Aftermarket OEM Quality |
| Packaging | Wooden Case Reinforced Carton Neutral Packing Customized Box |
Correct 318002 barrel displacement restores secondary-circuit flow capacity, rebalancing the K5V140 dual-section output and normalising simultaneous function speed.
Port geometry matched to the companion section of the K5V140 pump, preventing cross-port leakage between primary and secondary circuits.
Barrel face and valve plate lapped as a matched pair to Ra 0.2 for immediate sealing efficiency without break-in loss.
318002 can be replaced independently or together with 318001 for complete dual-section rotating group restoration.
FAQ
Q: How to distinguish 318002 companion-section failure from 318001 primary-section failure?
A: Perform a split-flow gauge test on both pump sections. Low pressure or high case-drain flow on the companion section with normal primary-section readings confirms 318002 barrel or valve plate wear.
Q: What is the role difference between 318001 and 318002?
A: 318001 is the primary section barrel and 318002 is the companion section barrel of the K5V140 tandem pump. Each governs a separate hydraulic circuit. They are not interchangeable due to different port timing.
Q: Can I replace 318002 without replacing 318001 on a high-hour 320D2?
A: Yes if the 318001 primary section passes a case-drain flow test. Replace 318002 independently when the companion section is the isolated failure. Consider replacing both together if total machine hours are high.
Q: How to confirm 318002 fits my 320D2 K5V140?
A: Verify pump model is K5V140 and existing companion barrel part number is 318002. Provide pump serial number to our team for cross-reference.
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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