Hydraulic Main Piston Pump CAT E120B Excavator for 120-8016 099-0246 085-5799

This is a variable displacement axial piston hydraulic pump designed for the CAT E120B and E110B excavators, model VRD63. It delivers hydraulic power to the digging, boom, arm, bucket, swing, and travel hydraulic circuits, ensuring reliable performance across demanding job site conditions.

The following symptoms typically indicate pump wear or failure and may require inspection or replacement:

• Insufficient hydraulic power and slow movement
• Excessive internal pump leakage, unable to build up pressure
• Abnormal noise and severe vibration of the pump
• Hydraulic oil overheating
• Oil leakage at the pump shaft and joint surface
• Stuck displacement mechanism, flow control failure

To ensure the correct part is supplied and to streamline your order, please provide the following information:

1. Machine serial number to confirm part interchangeability.
2. Your demand type: complete pump assembly, spare parts, or seal kit.
3. Quality option: Genuine, OEM, or Remanufactured.
4. Pre-delivery inspection: pressure test and visual inspection.
5. Seals and O-rings can be provided upon request.
6. Export packing with shockproof and anti-rust treatment.