Upright 8000 Serie Manual Del Usuario página 27

EMERGENCY CONTROLS
3. Emergency Lowering a, method two.
You can operate the hand pump from the ground control station cage
and operate the boom controls and slewing functions.
To operate the hand pump, insert the lever over the pump shaft, then lower
the lever to a convenient position to start pumping.
Move a control lever to the required direction of movement, and
operate the hand pump. When the machine starts to lower, continue
depressing the control lever.
Vigorous pumping is required to lower and slew the machine.
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