DRIVE GP-WHEEL 2719956 - Caterpillar

Illustration 1 g00615844
The hoist control valve is located above the transfer gear case.
Illustration 2 g00637022
Loosen O-ring face seal nut (1) on lowering control valve (2). Insert a 3/8 hex wrench into valve (3). Turn the valve counterclockwise by two turns.
Turn the engine start switch to the ON position.
Illustration 3 g00629568
Push the top half of the switch for the secondary steering. The switch must be held in the ON position.
Move the lever for the hoist control to the FLOAT position.
Illustration 4 g00615846
Pull up knob (4) on lowering control valve (5). The knob must be held in this position. This will allow the oil to flow from the secondary steering pump to the hoist cylinders. The dump body will lower under power.
When the dump body has been fully lowered, release knob (4) on lowering control valve (5). Release the switch for the secondary steering.
Turn valve (3) in a clockwise direction until the valve is closed. Tighten O-ring face seal nut (1) to a torque of 50 7 N m (37 5 lb ft).Do not operate the machine until the fault has been corrected.