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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 bar / 218 psi at idle)