4-2
GTH-2506 GTH-3007
Part No. 57.4400.9220GT
August 2018
Section 4 • Repair Procedures
Boom Components
1-1
Boom
How to Replace the
Boom Wear Pads
1 Extend the boom until the wear pads are
accessible.
2 Fork end of the boom - lower wear pads
:
Using a lifting strap from an overhead crane
or a fork lift of sufficient capacity, lift the boom
tube just enough to remove the weight from the
pads.
3 Pivot end of the boom - lower and upper
wear pads
: Use a prisebar to remove the
weight of the boom inner section from the pads.
4 Remove the wear pad retainer plates and
remove the wear pads from the boom.
5 Lubricate the wear surface of the new pads.
Refer to Maintenance Procedure A-4,
Lubricate
the Boom
.
Note: Do not lubricate the side wear pads.
6 Install the wear pads. Install and securely
tighten the retainer plates. Do not over tighten.
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 If the machine is equipped with the lifting fork
frame locking cylinder, disconnect the locking
cylinder hoses from the boom.
WARNING
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to
squirt or spray.
3 Remove the screw securing the fork level
cylinder pivot pin to the lifting fork.
4 Use a soft metal drift to remove the pivot pin.
5 Remove the screw securing the fork frame
pivot pin to the boom.
6 Use a soft metal drift to remove the pivot pin.
7 Using the overhead crane, lift and remove the
fork frame from the boom.
CAUTION
Crushing hazard. The fork
frame could fall if not properly
supported when the lock pin is
removed from the machine.
