Hydraulic Main Piston Pump CAT E303 304 Mini Excavator for 284-8038

• Part Number 284-8038
• Pump Type KYB Variable Displacement Axial Piston
• Compatible Models CAT E303, 303C, 303CR Mini Excavator

This KYB variable displacement axial piston hydraulic pump is designed for CAT E303, 303C, and 303CR mini excavators. It supplies hydraulic power to the boom, arm, bucket, swing, and travel hydraulic circuits, ensuring reliable and efficient machine operation.

The following symptoms may indicate pump wear or failure and should be inspected by a qualified technician:

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

To ensure correct part selection and delivery, please provide the following information when ordering:

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.