DAMPER 1084075 - Caterpillar

Illustration 1 g03390468
Location of the Components for the Parking Brake
(1) Piston. (2) Disc. (3) Plate. (4) Chamber. (5) Bolt. (6) Hub. (7) Shaft. (8) Plate. (9) Bolt. (10) Bearing cage. (11) Bolt. (12) Spring. (13) Plate.
The parking brake is positioned on the rear of the output transfer gear case. The parking brake is a multiple disc brake with a dry cavity which is engaged by springs (12).Plates (3) react against four bolts (11). Bolts (11) are anchored into bearing cage (10). Discs (2) have splines on the inside diameter which engage with hub (6). The hub is splined to shaft (7). The shaft is driven by one of the transfer gears. The discs turn with the transfer gear shaft.
Illustration 2 g03390469
Parking brake control button.
Note: A red colored interlock tab is part of the parking brake switch. The tab must be lifted and held before the switch can be pressed in either direction. Lift the interlock tab and press the top of the switch in order to activate the parking brake. Lift the interlock tab and press the bottom of the switch in order to deactivate the parking brake. The parking brake control button is positioned on the right side of the dashboard. This button operates the parking brake control valve.When the parking brake control button is pushed, oil flows from the accumulators to chamber (4) behind piston (1). Piston (1), plate (8), and bolts (9) are pushed to the left when the oil fills chamber (4). Shaft (7) is able to rotate when the pressure on plates (3) and on discs (2) is released. When the parking brake control button is pushed off, the flow of oil from the accumulator stops. The flow of oil to the parking brake also stops. Oil in chamber (4) drains back to the hydraulic oil tank. Springs (12) then exert force on plate (13). Discs (2) and plates (3) are clamped together. This compression of discs (2) and plates (3) engage the parking brake.When the pressure in the accumulators decreases below 6035 515 kPa (875 75 psi), the parking brake engages. The position of the control knob indicates the status of the parking brake.Use the parking brake if the service brakes fail to stop the machine.