Travel mechanism of each track consists of a variable two-speed piston motor, a planetary reducer and a parking brake, travel brake buffer valve is mounted on motor to reduce hydraulic shock.

Failures which can be solved by minor adjustment on brake pump, wheel, steering hydraulic cylinder, and micro-valve, connect level, mast roller, steering axle, etc. are excluded.

Many Al or Mg alloy die castings, such as the auto wheel, the brake cylinder, the hydraulic valve, the actuator body and the heat exchanger, have been produced.