Hydraulic Piston Pump Assembly for E3406 E 3406C E3406E Part No. 421-1808

This hydraulic piston pump assembly is manufactured to match the original specification for CAT 3406, 3406C, and 3406E engines (Part No. 421-1808). It serves as a direct replacement for a failed pump on your CAT bulldozer, delivering steady hydraulic output for heavy-load working conditions such as mining, earthmoving, and road construction.

• Gear tooth wear, pitting, and chipping
• Bearing damage accompanied by abnormal knocking noise
• Internal oil seal leakage and gear oil loss
• Planet carrier cracking under heavy load
• Output spline wear causing power transfer slipping

1. Confirm the part number and machine serial number before ordering.
2. Check spline size, mounting hole position, and gear ratio.
3. Request a running test before shipment.
4. Use anti-collision wooden packaging for transport.
5. Quality warranty is available for qualified products.