BASE-OIL COOLER 7W9026 - Caterpillar

Illustration 1 g01141356
Service Brake System (8) Service brake control valve (15) Steering priority valve (17) Gear pump (pilot, brake, steering, and auxiliary tool)Components
Illustration 2 g00929266
Components of the Service Brake Pedal (23) Service brake pedal (24) Oscillating axle lock switch (25) Release for the brake pedal and the oscillating axleService brake pedal (23) is located on the right side of the cab floor. Oscillating axle lock switch (24) is located below service brake pedal (23).
Illustration 3 g00928916
(17) Gear pump (pilot, brake, steering, and auxiliary tool)Gear pump (17) is driven off a gear in the timing cover of the engine.Gear pump (17) supplies oil to the following components:
Brake system
Steering system
Pilot manifold
Medium pressure attachment
Illustration 4 g00929015
View Under the Cab (8) Service brake control valve (15) Steering priority valve (18) Return manifold (21) Steering metering unitSteering metering unit (21), service brake valve (8) and steering priority valve (15) are located below the cab at the front of the machine. Return manifold (18) is also located below the cab.
Illustration 5 g00929016
Steering Priority Valve (10) Line to steering unit (CF) (11) Line to steering unit (LS) (14) Line to service brake control valve (EF) (22) Line from gear pump (pilot, brake, steering, and auxiliary tool) (P)Steering priority valve (15) is mounted below the cab. The steering priority valve provides the steering metering unit with priority flow from gear pump (17) .Service Brake Operation
Illustration 6 g01151663
Schematic of Service Brakes (4) Service brake (5) Line (6) Line (8) Service brake control valve (10) Line to steering unit (CF) (11) Line to steering unit (LS) (14) Line (EF) (15) Steering priority valve (16) Filter (17) Gear pump (pilot, brake, steering, and auxiliary tool) (18) Return manifold (26) Brake accumulatorsGear pump (17) directs oil through steering priority valve (15) to service brake control valve (8). Service brake control valve (8) charges brake accumulators (26). When the service brake pedal is depressed, stored oil in brake accumulators (26) is directed to the pistons of service brake (4) in order to engage the brakes.Note: Refer to Systems Operation, "Service Brake Control Valve" in this manual for a complete description of the operation of the service brake control valve.