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SEAL-PISTON 2333893 - Caterpillar

2333893 SEAL-PISTON Caterpillar parts SEAL
Alternative (cross code) number:
Caterpillar 2333893 SEAL-PISTON

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200-0866 Brake Control Valve (Service)
The service brake control valve is located on the front right side, and under the operator's platform.A mechanical link connects the two brake pedals to each other. When a brake pedal is depressed, a lever and cam assembly actuates the service brake control valve. The control valve is a fully split modulating valve with two independent output pressures.
Illustration 1 g00829933
Service Brake Control Valve for the 834G Wheel Tractor and the 988GWheel Loader (1) Return ports to the hydraulic tank. (2) Supply ports from the brake accumulator charging valve. (3) Supply ports to the service brakes.
Illustration 2 g00695822
View A-A of the Service Brake Control Valve for the 834G Wheel Tractor and the 988GWheel Loader (1) Piston. (2) Spring. (3) Spring. (4) Retainer. (5) Ball. (6) Spacer. (7) Upper valve spool. (8) Outlet to rear service brakes. (9) Outlet to hydraulic oil tank. (10) Passage. (11) Supply from accumulator for the rear service brakes. (12) Drain port to tank. (13) Upper valve spool passage. (14) Cavity. (15) Lower valve spool. (16) Plug. (17) Outlet to front service brakes. (18) Passage. (19) Lower valve spool passage. (20) Supply from accumulator for the front service brakes. (21) Cavity. (22) Spring.The service brake control valve modulates the flow of pressurized oil. The flow of pressurized oil is modulated between the brake accumulators and the service brakes. The position of either brake pedal causes a specific pressure at the service brakes. As the position of the pedal changes, the pressure at the service brakes also changes.Applying one of the brake pedals will cause a roller arm in the foot brake control to push on piston (1). Piston (1) applies a force on

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