CYLINDER GP-TILT 3707083 - Caterpillar

Front Wheel Brakes
Illustration 1 g00535280
(1) Pistons
(2) Brake carrier linings
(3) Wheel
(4) Inlet
(5) Disc
(6) Plate
(7) Caliper assembly
(8) Taper roller bearings
(9) Axle The front wheels have caliper disc type brakes. Plate (6) is fastened to axle (9). Plate (6) is used to support caliper assembly (7). Taper roller bearings (8) are used to support wheel (3) on axle (9). Disc (5) is bolted to wheel (3). Two brake carrier linings (2) on each side of disc (5) are used for each caliper. There is one caliper assembly (7) on each wheel.The application of the parking and secondary brakes and the service and retarder brakes is identical for the brakes on the front wheels. The hydraulic oil from the front brake master cylinder flows into inlet (1) of the caliper. All piston bores are connected together by inside passages in order to allow free flow of hydraulic oil. Pressure oil forces pistons (1) against brake carrier linings (2) and friction occurs. The friction causes the rotation of wheel (3) to slow. A continued application of the brakes stops the rotation of wheel (3).Rear Wheel Brakes
Illustration 2 g00280426
Wheel brake components
(1) Wheel assembly
(2) Duo-Cone seals
(3) Anchor
(4) Hub
(5) Housing
(6) Ring
Illustration 3 g00535737
Rear wheel assembly
(A) Purge valve for the service brake and retarder
(B) Purge valve for the parking and secondary brake
(C) Parking and secondary brake oil passage
(D) Brake cooling oil inlet
(E) Brake cooling oil outlet
(F) Service brake and retarder oil passage
Illustration 4 g00535757
(2) Duo-Cone seals
(3) Anchor
(4) Hub
(6) Ring
(7) Discs
(8) Parking and secondary brake release oil chamber
(9) Parking and secondary brake piston
(10) Guide
(11) Plates
(12) Service brake and retarder piston
(13) Service brake and retarder oil chamber
(14) Spring
(15) Spring
Illustration 5 g00535786
(16) Parking and secondary brake spring
(17) Parking and secondary brake spring Wheel assembly (1) is connected to housing (5) by two taper roller bearings. Housing (5) does not turn. Parking Brake Application
The parking brakes are spring applied brakes that are released by pressure. When the parking and secondary brake valve is not supplied with air pressure, parking and secondary brake springs (15) and (16) push on parking and secondary brake piston (9). Parking and secondary brake piston (9) is against service brake and retarder piston (12). Service brake and retarder piston (12) will push discs (7) and plates (11) together. Plates (11) do not turn. Discs (7) turn with wheel assembly (1). When discs (7) and plates (11) are held together, friction occurs. The friction causes the rotation of the wheel assembly to slow and the wheel assembly stops rotating. Wheel assembly (1) is connected to hub (4) by splines.When the parking and secondary brake valve is supplied with air pressure, pressure oil from the brake section of the hoist and brake gear pump is sent to parking and secondary brake oil passage (C). Oil passage (C) is connected to parking and secondary brake release oil chamber (8). The pressure oil forces parking and secondary brake piston (9) away from discs (7) and plates (11). Spring (14) and guide (10) pull service and retarder piston (12) away from discs (7) and from plates (11).