User's Manual

GM550 v1043 FCC-IC.doc Revision 2 35
For live end mounting on multiple sheave blocks with sheaves greater than 16 inches
(41 centimetres) in diameter consult your service representative.
For fast line weight installation place the anti-two-block switch mounting bracket directly below
the sheave center as low and as close to the edge of the sheave as possible. Place the fast line
weight mounting bracket on the opposite side of the sheave with the chain hole pointing down
and lined up opposite the pivot of the anti-two-block switch mounting bracket.
Mount bracket 2-4 in. (5-10 cm)
below sheave centre.
Boom base →
Figure: Jib, rooster or other extension, anti-two-block switch
placement for single part of line operation only
Mount bracket directly below sheave
centre as low as possible.
Fast line mounting bracket
Chain hole
Anti-two-block switch
mounting bracket
Fast line weight
Boom base →
Front view
Figure: Fast line weight installation