GEAR-PLANETARY 9W9099 - Caterpillar

Illustration 2 g03636337
Location of the braking system components
(1) Brake release cylinder
(5) Parking brake control valve
(8) Front wheel brakes
(9) Engine over-speed brake control valve
(21) Brake accumulator oil pressure switch - alert indicator
(22) Brake accumulator oil pressure switch - brake application
(23) Brake accumulator
(27) Brake accumulator relief valve
(30) Service brake and transmission neutralizer pedal
(31) Service brake pedal
(34) Brake accumulator charging valve
(35) Pilot relief valve
(39) Pilot oil filter
(40) Service brake control valve
(41) Pilot and braking pump
(42) Hydraulic tank
(43) Breaker relief valve
(44) Rear wheel brakesThe braking system has two brake control circuits operating four-wheel brakes on the machine. The two circuits are the service brake circuit and the parking brake circuit.The main components of the service brake circuit are: hydraulic tank (42), pilot, and braking pump (41), check valve (37), brake accumulator charging valve (34), brake accumulator (23), service brake, and transmission neutralizer pedal (30), service brake pedal (31), service brake control valve (34), front wheel brakes (8), rear wheel brakes (44), Engine overspeed brake control valve (9) and various lines.The main components of the parking brake circuit are: hydraulic tank (42), pilot, and braking pump (41), pilot oil filter (39), check valve (37), pilot relief valve (35), parking brake control valve (5), front wheel brakes (8), rear wheel brakes (44) and various lines.
Illustration 3 g03638676
(42) Hydraulic tank (behind guard)
(45) Filler capHydraulic tank (42) is located in the middle of the right side of the machine behind the hydraulic tank guard. Extra oil is placed into the tank through filler cap (45).
Illustration 4 g03638678
(42) Hydraulic tank
(43) Breaker relief valveBreaker relief valve (43) is on hydraulic tank (42).
Illustration 5 g03638679
(41) Pilot and braking pumpPilot and braking pump (41) is part of a two section, gear type pump mounted on the torque converter updrive housing.
Illustration 6 g06031204
(39) Pilot oil filter
Pilot oil filter (39) is on the rear frame cross beam.
Illustration 7 g03638680
(34) Brake accumulator charging valveBrake accumulator charging valve (34) is on the left side of the rear frame.
Illustration 8 g03638685
(23) Brake accumulatorBrake accumulator (23) is on the left side of the rear frame.
Illustration 9 g03638686
(30) Service brake and transmission neutralizer pedal
(31) Service brake pedal
(40) Service brake control valve (under floor)Service brake and transmission neutralizer pedal (30) and service brake pedal (31) are on the floor of the operator station. Service brake control valve (40) is located under the floor of the operator station.
Illustration 10 g06031205
(35) Pilot relief valvePilot relief valve (35) and pilot oil filter (39) is on the rear frame cross beam.
Illustration 11 g03638688
(5) Parking brake control valve
(16) Pressure tap for the parking brake circuitParking brake control valve (5) is located on the left side of the rear frame.
Illustration 12 g03638690
(9) Engine overspeed brake control valveEngine overspeed brake control valve (9) is located on the left side of the rear frame.Reference: For more information on the engine overspeed brake control valve, refer to Systems Operation Testing and Adjusting, "Engine Overspeed Control" for the machine being serviced.