Boom - Genie GTH-636 Service Manual

June 2007
REV C
1-2

Boom

How to Replace the
Boom Wear Pads
1 Extend the boom until the wear pads are
accessible.
2 Lower wear pads (if equipped): Attach a
lifting strap from an overhead crane to the fork
end of the boom. Lift the boom just enough to
remove the weight from the pads and allow the
pad to be replaced.
3 Remove the wear pad mounting fasteners and
remove the wear pads from the boom.
4 Lubricate the wear surface of the new pads with
multipurpose grease.
5 Install the new wear pads. Install and securely
tighten the fasteners.
How to Replace the Boom Rollers
(if equipped)
1 Extend the boom approximately half way out.
2 Attach a lifting strap from an overhead crane to
the fork end of the boom. Lift the boom just
enough to remove the weight from the lower
rollers.
3 Remove the fasteners securing the boom roller
pivot pin to the boom.
4 Use a soft metal drift to remove the pivot pin.
Remove and replace the boom rollers.
Crushing hazard. The boom rollers
could fall if not secured when the
pivot pin is removed from the
boom.
Note: Note the quantity and location of the thrust
washers when removing the boom rollers.
Part No. 97487 GTH-636 • GTH-644 • GTH-842 • GTH-844 • GTH-1048 • GTH-1056
Section 4 • Repair Procedures
How to Remove the Lifting Fork
Frame
1 With the boom in the stowed position, attach a
lifting strap from an overhead crane to the top
of the lifting fork frame at the front of the boom.
Support the frame. Do not apply any lifting
pressure.
2 Remove the fasteners securing the fork level
cylinder pivot pin to the lifting fork.
3 Use a soft metal drift to remove the pivot pin.
4 Remove the fasteners securing the fork frame
pivot pin to the boom.
5 Use a soft metal drift to remove the pivot pin.
Crushing hazard. The fork frame
could fall if not properly supported
when the pivot pin is removed
from the machine.
6 Remove the fork frame from the boom.
BOOM COMPONENTS
4 - 3