784C, 785C and 785C HAA Off-Highway Truck/Tractors Hydraulic System Caterpillar


Hydraulic System Schematic

Usage:

785C 1HW



Illustration 1g00500352

(1) Left rear wheel brake

(2) Air breathers

(3) Left front wheel brake

(4) Torque converter lockup clutch and synchronizing valve

(5) Makeup tank for brake oil

(6) Torque converter and front brake cooling oil cooler

(7) Torque converter

(8) Torque converter outlet relief valve

(9) Pump drive

(10) Transmission hydraulic control

(11) Torque converter and parking brake release gear pump

(12) Transmission oil cooler

(13) Transmission planetary

(14) Transmission cooler inlet relief valve

(15) Torque converter inlet relief valve

(16) Electric drive pump check valve

(17) Parking and secondary brake release electric drive pump

(18) Parking and secondary brake valve

(19) Torque converter and front brake cooling diverter valve

(20) Brake master cylinder (front)

(21) Brake master cylinders (rear)

(22) Transmission gear pump

(23) Rear slack adjuster

(24) Traction control valve

(25) Rear brake oil cooler relief valve

(26) Hoist control valve

(27) Front slack adjuster

(28) Right rear wheel brake

(29) Rear brake oil coolers

(30) Hoist counterbalance valve

(31) Hoist cylinders

(32) Check valve

(33) Hoist and rear brake cooling gear pump

(34) Torque converter, hoist, brake, and transmission hydraulic tank

(35) Right front wheel brake

(47) Parking brake release pump section

(48) Torque converter charging pump section

(49) Torque converter scavenge pump section

(50) Transmission charging pump section

(51) Transmission lubrication pump section

(52) Transmission scavenge pump section

(53) Front section of the hoist and rear brake cooling gear pump

(54) Rear section of the hoist and rear brake cooling gear pump

Caterpillar Information System:

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