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| Illustration 1 | g00528937 |
This schematic covers the BBB1-221 and the BCA1-172. | |
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| Illustration 2 | g00953717 |
This schematic covers the BBB222-UP and the BCA173-UP. (1) Left rear wheel brake (2) Air breather (3) Left front wheel brake (4) Towing diverter valve (5) BBB1-221 and BCA1-172 Pump and motor (secondary steering and brake release) (5) BBB222-UP and BCA173-UP Pump and motor (secondary steering) (brake release) (prelubrication) (high speed oil change - QuickEvac) (6) Hoist and brake hydraulic tank (7) Parking brake release check valve (8) Brake pump section of the hoist and brake gear pump (9) Hoist pump section of the hoist and brake gear pump (10) Brake master cylinder (front) (11) Parking and secondary brake valve (12) Gear pump for the hoist and brake (13) Brake master cylinder (rear) (14) Hoist control valve (15) Rear slack adjuster (16) Rear brake oil cooler (17) Rear brake oil cooler relief valve (18) Makeup tank for brake oil (19) Hoist cylinders (20) Right rear wheel brake (21) Right front wheel brake | |
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| Illustration 3 | g00529683 |
(6) Hoist and brake hydraulic tank (8) Brake pump section of the hoist and brake gear pump (9) Hoist pump section of the hoist and brake gear pump (14) Hoist control valve (19) Hoist cylinders | |
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| Illustration 4 | g00529685 |
(6) Hoist and brake hydraulic tank (9) Hoist pump section of the hoist and brake gear pump (14) Hoist control valve (19) Hoist cylinders | |