Genie GTH-636 Service Manual page 78

Section 4 • Repair Procedures
BOOM COMPONENTS
23 Support and slide the number 3 boom tube
assembly approximately halfway out of the
number 2 boom tube.
24 Using the crane, raise the fork end of the
number 3 boom tube assembly slightly and
remove the bottom wear pads of the number 2
boom tube.
25 Support and slide the number 3 boom tube
assembly out of the number 2 boom tube.
Place the number 3 boom tube assembly on a
structure capable of supporting it.
Crushing hazard. The number 3
boom tube could become
unbalanced and fall when
removed from the number 2 boom
tube if not properly supported and
attached to the overhead crane.
Note: During removal, the overhead crane strap
will need to be adjusted for proper balancing.
4 - 8 GTH-636 • GTH-644 • GTH-842 • GTH-844 • GTH-1048 • GTH-1056
GTH-636 and GTH-1048:
1 Remove the extension cylinder. See 1-4, How
to Remove the Boom Extension Cylinder .
2 Remove the boom. See 1-2, How to Remove
the Boom .
3 Remove the access cover from the fork of the
boom. Remove the clamp securing the
hydraulic hoses to the top of the gooseneck at
the fork end of the boom (if equipped).
4 Attach a lifting strap from an overhead crane to
the rod end of the fork level cylinder.
5 Raise the cylinder enough to access the
manifolds of the fork level cylinder.
6 Tag, disconnect and plug the hydraulic hoses
from the fork level cylinder manifolds. Cap the
fittings. Lower the cylinder.
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.
Crushing hazard. Keep hands
clear of the cylinder when
lowering.
Component damage hazard.
Hoses can be damaged if they are
kinked or pinched.
7 Attach a lifting strap from an overhead crane to
the barrel end of the fork level cylinder.
8 Remove the fasteners securing the fork level
cylinder barrel-end pivot pin to the boom.
June 2007
REV C
Part No. 97487