Final Drive Assembly 557-5904 557-5905 for E336GC E345GC Excavator

This hydraulic final drive assembly, integrated with a travel motor and reduction gearbox, is the walking drive core component for excavators. It is compatible with the E336GC and E345GC models and delivers the driving torque required for machine travel. Precision machining, stable output torque, and reliable sealing make it well suited for equipment overhaul and replacement.

The following symptoms typically indicate a worn or failing final drive assembly:

• Slow travel speed or weak driving torque
• Travel jitter and abnormal noise during movement
• Oil leakage from the sealing surface and joints
• One side fails to travel, or the travel brake fails
• High temperature after prolonged running

• Confirm the machine model before ordering
• Check the part number against your old final drive assembly
• Keep hydraulic oil clean during installation
• Replace the seal kit together if needed