Brake Hydraulic System
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| Illustration 1 | g00529595 |
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(1) Hydraulic tank
(2) Rear brake oil cooler relief valves (3) Rear brake cooling pump section (4) Oil screens for rear brake oil cooler (5) Makeup tank for brake oil (6) Rear brake oil coolers (7) Rear brake cooling pump section (8) Hoist and front brake cooling gear pump (9) Parking brake release pump section (10) Rear brake cooling pump section (11) Parking and secondary brake valve (12) Left rear wheel brake (13) Parking brake release hydraulic filter (14) Bypass switches (15) Right rear wheel brake (16) Screens for the hoist (17) Hoist cylinders (18) Left service and parking brake (19) Hoist control valve (20) Front brake oil cooler (21) Right service and parking brake (22) Front brake oil cooler relief valve (23) Front brake cooling hydraulic filters (24) Front brake cooling diverter valve | |
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| Illustration 2 | g00527551 |
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(4) Oil screens for rear brake oil cooler
(6) Rear brake oil coolers (11) Parking and secondary brake valve (12) Left rear wheel brake (15) Right rear wheel brake (18) Left service and parking brake (20) Front brake oil cooler (21) Right service and parking brake (24) Front brake cooling diverter valve (25) Pilot oil from the parking brake release section of the oil pump (26) Return oil to tank (27) Valve for Traction Control System (TCS) (28) Oil from the electric drive pump for manual brake release (29) Air from secondary air tank (30) Oil from the hoist control valve (31) Oil from the parking brake release pump section (32) Front brake slack adjuster (33) Rear brake slack adjuster (34) Air from the service brakes or from the retarder (35) Front brake air/hydraulic cylinders (36) Rear brake air/hydraulic cylinders (37) Oil from the three rear brake cooling pump sections (38) Oil to the makeup tank for the brake oil | |
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| Illustration 3 | g01057075 |
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(5) Makeup tank for brake oil
(11) Parking and secondary brake valve (32) Front brake slack adjuster (35) Front brake air/hydraulic cylinders (two) | |
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| Illustration 4 | g01057076 |
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Side view of rear service brake lines (1) Hydraulic tank (3) Rear brake cooling pump section (5) Makeup tank for brake oil (7) Rear brake cooling pump section (9) Parking brake release pump section (10) Rear brake cooling pump section (11) Parking and secondary brake valve (13) Parking brake release hydraulic filter (27) Valve for Traction Control System (TCS) (33) Rear brake slack adjuster (36) Rear brake air/hydraulic cylinders (39) Electric driven pump for manual brake release | |
Caterpillar Information System:
554 Forwarder and 574 Forwarder Fuel System Primary Filter (Water Separator) - Drain
69D and 769D Off-Highway Truck/Tractors and 771D Quarry Truck Power Train Differential and Bevel Gear - Adjust
773D Off-Highway Truck and 775D Quarry Truck Steering System Front Wheel Bearing - Adjust
784C and 785C Off-Highway Trucks Machine Systems Electric Drive Pump (Parking And Secondary Brake Release) - Disassemble
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5110B Excavator, 24H Motor Grader, 69D, 769D, 773D, 773E, 776D and 777D Off-Highway Truck/Tractors, 771D, 775D and 775E Quarry Trucks and AD40 Series II, AD45 and AE40 II Underground Articulated Trucks Caterpillar Monitoring System System Schematic
69D and 769D Off-Highway Trucks and 771D Quarry Truck Steering System Front Wheel Bearing - Adjust
69D and 769D Off-Highway Truck/Tractors and 771D Quarry Truck Power Train Transmission Hydraulic Control Pilot Pressure - Test and Adjust
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69D and 769D Off-Highway Trucks and 771D Quarry Truck Steering System Front Wheel - Align
784C and 785C Off-Highway Trucks Machine Systems Electric Drive Pump (Parking and Secondary Brake Release) - Assemble
773D Off-Highway Truck and 775D Quarry Truck Engine Oil and Filter - Change
980G Wheel Loader Machine Systems Gear Pump (Secondary Steering) - Assemble
773D Off-Highway Truck and 775D Quarry Truck Fuel System Secondary Filter - Replace
773D Off-Highway Truck and 775D Quarry Truck Hoist and Brake Tank Oil - Change
773D Off-Highway Truck and 775D Quarry Truck Tire Shipping Pressure
773D Off-Highway Truck and 775D Quarry Truck Fuel System Water Separator - Drain
554 Forwarder and 574 Forwarder Fuel System Primary Filter (Water Separator) Element - Replace