3 — OPERATION
Manual Lowering
Each Manual Lowering Valve (Figure 3-6) is equipped with a plunger, found at the base of the lift cylinders and on the back side of the jib boom (Figure 3-7). Use the plungers to lower the platform in case of a complete electrical power failure, a load shift, or other emergency situation. To lower the work platform, push the valve plungers. Continue pushing the plungers to completely lower the booms.
Figure 3-6. Manual Lowering Valve (Jib)
UPPER BOOM
(END OF CYLINDER)
JIB BOOM
(BEHIND BOOM)
LOWER BOOM
(END OF CYLINDER)
Figure 3-7. Manual Lowering Valve Locations
