china 315B 312B Hydraulic Pump K3V63DT for Excavator Parts

Oil change: 1,000 operating hours

Filter replacement: 500 hours (suction filter: 1R-0710; return filter: 1R-0716)

seal kit replacement: 8,000 hours (kit part: 118-7085)

Inspection Points:

Check for leaks at port connections (SAE 3000 psi flanges: 1½” inlet, 1″ outlet)

Monitor swashplate movement (should be smooth, no binding)

Verify charge pump pressure (minimum 15 バー / 218 psi at idle)