Snorkel TL37-sn7000+V-2 - Manual (Page 26)

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3. EMERGENCY SLEW.
In the event of a power failure, the machine may be manually slewed by
moving the base control slew lever in the desired direction and manually
indexing the Slew Platform by means of ratchet on the shaft of the Slew
Gearbox.
Emergency Lowering, method two.
You can operate the hand pump in the cage and operate the lowering boom
functions.
To operate the hand pump, simply insert the lever into the pump shaft,
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 operate the slew.
EMERGENCY CONTROLS