Manitowoc GROVE RT890E Operator's Manual page 118

SET-UP AND INSTALLATION
If, additionally, a hook block is reeved on the main boom,
connect the lifting limit switch of the main hoist to the socket
on the right side of the main boom head.
During Transport
• Insert the plug of the connecting cable into the dummy
socket (2).
• Wind the connecting cable onto the holders (3).
• Plug the short-circuit plug into the socket (1).
4-56
Setting the Folding Swingaway Extension
Offset
Ensure any blocking material used is adequate to support
the weight of the extension assembly without tipping or
falling.
1. Extend and set the outriggers and swing the boom to
over the front. Position the boom to above horizontal.
2. Block up under the tip of the extension assembly
section.
3. To set the offset from a lesser degree to higher degree,
perform the following procedures.
CAUTION
Do not overload the extension anchor fittings or the
extension base section when lowering the boom.
a. Slowly lower the boom until the pressure is relieved
on the offset link pins.
NOTE: For 20 or 40 degree offset, make sure the mast is in
the raised position.
b. Remove the offset link clip pins and attach pins
securing the offset links in the lesser degree offset
position. If going to maximum offset, stow them in
the stowage lugs. If going to the intermediate (20
degree) offset, install them in the offset links for that
degree of offset.
c. Slowly elevate and telescope the boom at the same
time so that the extension does not move off of the
blocking until the offset links take the full weight of
the extension.
d. Reeve the hoist cable as described under normal
erecting procedures.
RT890E
DANGER