Excavators CAT E120B E110B E130B Hydraulic Main Piston Pump Assembly VRD63

The E120B hydraulic pump is specifically designed for the CAT E120B excavator and serves as the core power component of the machine's hydraulic system.

• Verify OEM part number compatibility, including regulator and servo valve assembly
• Require hydraulic bench test report for pressure, flow, and case drain leakage
• For remanufactured units, confirm replacement of pistons, cylinder block, valve plate, slippers, bearings, and all seals
• Inspect pump housing for pores and cracks upon arrival
• Protect ports to prevent contaminants from entering pump cavity
• Secure pump properly during transportation to avoid damage to input shaft and port threads
• Clean hydraulic tank and pipelines before installation
• Replace all hydraulic filters and bleed air from system
• Test pump pressure and flow after installation
• Check regulator response and inspect for abnormal noise, oil leakage, and engine bogging