MAG-170VP Replacement Travel Device Final Drive Assembly For SANY SY215

This high-precision heavy-duty driving device assembly (integrating high-pressure walking motor and planetary gearbox) adopts the industry benchmark MAG-170VP (such as MAG-170VP-3800G) series high-pressure plunger walking motor architecture as its core. This premium Final Drive Assembly, as a high standard aftermarket pure replacement, is specially designed for deep matching with SANY's classic medium-sized hydraulic excavator, perfectly suitable for 21 ton absolute core flagship star models such as SANY SY215, SY215C, SY215H, etc. The product is based on first principles optimization of ultra-high pressure fluid mechanics and multi-stage planetary gear system structure, seamlessly carrying the alternating load caused by frequent steering under complex working conditions, ensuring absolute certainty of propulsion torque. The physical dimensions of the product packaging are approximately 580mm × 480mm × 510mm, with an overall net weight of approximately 170kg. The original factory standard hole positions are precisely aligned.

"Extreme cleaning and torque tightening: Before lifting and docking, the installation surface of the frame base and drive wheel flange must be absolutely flat and free of any foreign objects. All high-strength fastening bolts must be tightened using torque wrenches, strictly following the factory's specified torque for symmetrical and phased cross tightening to prevent local abnormal shear stress.

Motor forced oil filling (core avoidance pit): When connecting hydraulic pipelines, they must be absolutely aligned and do not connect the wrong drain pipe (Case Drain). Before starting the engine, it is necessary to fill the top of the walking motor housing with clean hydraulic oil through the air release/oil injection port. Dry grinding is strictly prohibited for starting, otherwise the internal rotating components will undergo irreversible physical erosion within 3 seconds of ignition.

Idle micro exhaust transition: Use a working device to suspend the entire machine's single-sided track support, control the walking mechanism to run slowly and alternately in front and back micro motion for 10-15 minutes, thoroughly exhaust the air inside the circuit, and closely monitor the gear meshing sound. Only after confirming that the thermodynamic state of the system is stable can the working load be applied on the ground."