Hydraulic Main Piston Pump 151-9736 for E313B Excavator

This hydraulic main piston pump is the core power component of the excavator hydraulic system, designed for compatibility with the E313B model. It supplies pressure oil to drive the boom, arm, bucket, and travel movements, ensuring reliable performance across all primary machine functions.

Manufactured with precise processing techniques, the pump delivers stable output pressure and excellent wear resistance, making it an ideal choice for machine overhaul and replacement applications.

The following symptoms may indicate that the hydraulic main piston pump requires inspection or replacement:

• Weak digging force and slow working speed
• Abnormal noise and vibration during operation
• Internal wear leading to pressure drop
• Oil leakage at the pump assembly sealing surface
• Unstable hydraulic flow and action jitter

To ensure correct fitment and long-term reliability, please observe the following before ordering and installation:

• Verify the machine model before placing your order
• Confirm the part number matches your existing old pump
• Keep hydraulic oil clean during installation
• Replace the sealing kit together if necessary