COMPONENT OPERATION / Travel Device When Brake is Applied When the travel lever is in the neutral position, the friction plate and plate come in contact tightly, so that the parking brake is applied. At this time, oil in the piston chamber returns to the hydraulic oil tank. When Brake is Released When the travel lever is operated, pilot pressure oil flows to the piston chamber and acts on the piston. Therefore, the piston is pushed and moves upward. Consequently, the friction plate is separated from the plate and the parking brake is released.
Spring Piston Chamber Piston Plate Friction Plate Casing Rotor T111-03-04-007 Spring Piston Chamber Piston Plate Friction Plate T111-03-04-008 T3-5-13 n e Casing Rotor