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3 — OPERATION
3-9
3-4 MANUAL BOOM ROTATION
The hydraulic boom lift is equipped with an emergency rotation handle (crank) that can
be used to rotate the boom in case of a power failure or other emergency situation.
Use the following procedure to manually rotate the boom:
1. Remove the crank from its stowage rack and install the crank on the hex end of
the worm gear drive screw (Figure 3-8).
2. Hold the boom rotation valve lever in the correct position for boom rotation and
turn the crank to rotate the boom.
BOOM ROTATION
VALVE LEVER
BOOM ROTATION
CRANK
Figure 3-8. Emergency Rotation