Brake Hydraulic System
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| Illustration 1 | g00556031 |
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(1) Left rear wheel brake
(2) Left front wheel brake (3) Air breathers (4) Torque converter lockup clutch and synchronizing valve (5) Makeup tank for brake oil (6) Torque converter and front brake cooling oil cooler (7) Parking brake release pump section (8) Torque converter (9) Torque converter outlet relief valve (10) Pump drive (11) Torque converter and front brake cooling diverter valve (12) Torque converter charging pump section (13) Transmission hydraulic control (14) Torque converter scavenge pump section (15) Torque converter and parking brake release gear pump (16) Transmission oil cooler (17) Transmission planetary (18) Transmission cooler inlet relief valve (19) Parking and secondary brake valve (20) Torque converter inlet relief valve (21) Brake master cylinder (front) (22) Transmission charging pump section (23) Transmission lubrication pump section (24) Transmission scavenge pump section (25) Electric drive pump check valve (26) Parking and secondary brake release electric drive pump (27) Transmission gear pump (28) Rear slack adjuster (29) Brake master cylinders (rear) (30) Traction control valve (31) Rear brake oil cooler relief valve (32) Rear brake cooling pump section (33) Hoist control valve (34) Hoist pump section (35) Front slack adjuster (36) Right rear wheel brake (37) Rear brake oil coolers (38) Hoist counterbalance valve (39) Hoist cylinders (40) Hoist diverter valve (41) Hoist and rear brake cooling gear pump (42) Torque converter, hoist, brake, and transmission hydraulic tank (43) Right front wheel brake | |
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| Illustration 2 | g00556032 |
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Top view of front service brake lines (5) Makeup tank for brake oil (19) Parking and secondary brake valve (21) Brake master cylinder (front) (35) Front slack adjuster | |
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| Illustration 3 | g00556033 |
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Side view of front service brake lines (19) Parking and secondary brake valve (21) Brake master cylinder (front) (35) Front slack adjuster | |
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| Illustration 4 | g00556034 |
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Top view of rear service brake lines (5) Makeup tank for brake oil (8) Torque converter (15) Torque converter and parking brake release gear pump (19) Parking and secondary brake valve (26) Parking and secondary brake release electric drive pump (28) Rear slack adjuster (29) Brake master cylinders (rear) (42) Torque converter, hoist, brake, and transmission hydraulic tank (44) Parking brake release hydraulic filter | |
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| Illustration 5 | g00324973 |
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Top view of oil cooler lines (6) Torque converter and front brake cooling oil cooler (8) Torque converter (11) Torque converter and front brake cooling diverter valve (15) Torque converter and parking brake release gear pump (19) Parking and secondary brake valve (37) Rear brake oil coolers (40) Hoist diverter valve (42) Torque converter, hoist, brake, and transmission hydraulic tank (45) Torque converter and front brake cooling screen | |
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| Illustration 6 | g00324974 |
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Side view of oil cooler lines (6) Torque converter and front brake cooling oil cooler (8) Torque converter (11) Torque converter and front brake cooling diverter valve (15) Torque converter and parking brake release gear pump (19) Parking and secondary brake valve (37) Rear brake oil coolers (40) Hoist diverter valve (42) Torque converter, hoist, brake, and transmission hydraulic tank (45) Torque converter and front brake cooling screen | |
Caterpillar Information System:
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740 Articulated Truck, 768C, 769C, 769D, 772B, 773B, 773D, 773E, 773F, 776, 776B, 776C, 776D, 777, 777B, 777C, 777D, 777F, 784B, 784C, 785, 785B, 785C, 785D, 789, 789B, 789C, 789D, 793, 793B, 793C and 793D Off-Highway Trucks and 771C, 771D, 775B, 775 Service Tools
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793B Off-Highway Truck Front Wheel Oil - Change
793B Off-Highway Truck Steering Linkage - Inspect