353-0528 333-3036 Caterpillar cat345D Final Drive Gearbox with Motor

This mining grade heavy-duty final drive assembly (integrating high-pressure travel motor and multi-stage planetary gearbox) has core original part numbers including 353-0528 and 333-3036. This assembly serves as the core power source for walking drive and is specially designed for Caterpillar heavy-duty excavators, perfectly matching the 45 to 52 ton main models such as CAT 345D, 345D L, 349D, 349D L, and 352F. The product is designed based on first principles for heavy-duty multi-stage planetary transmission, carrying extreme shear forces and ensuring absolute certainty of walking output torque. The physical dimensions of the product packaging are approximately 820mm × 820mm × 880mm, with an overall net weight of approximately 540kg. The original factory standard position is precisely aligned.

"Heavy load fastening and flat cleaning: Before lifting and docking, the installation surface of the frame must be absolutely flat, free of rust or foreign objects. All high-strength fastening bolts must be coated with anti seize compound and tightened symmetrically and in stages using torque or hydraulic wrenches strictly in accordance with the original factory's specified torque.

Motor forced oil filling (core avoidance pit): Do not connect the wrong drain pipe (Case Drain) when connecting the hydraulic pipeline. Before starting, clean hydraulic oil must be filled from the oil injection port on the top of the walking motor housing. Dry grinding is strictly prohibited during starting, otherwise the internal plunger will undergo physical erosion within 3 seconds of ignition.

Transition of no-load test: With the track support in an unloaded state, control the single-sided walking mechanism to alternate micro motion forward and backward for 10-15 minutes, exhaust the circuit air and monitor the gear meshing sound. Only after confirming the thermodynamic state is stable can full load operation be applied."