Genie GTH-636 Service Manual page 81

June 2007
REV C
GTH-1056:
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 front of the
boom. Remove the clamp securing the fork
level hoses to the number 3 boom tube.
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 fork level cylinder
hoses from the 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.
Part No. 97487 GTH-636 • GTH-644 • GTH-842 • GTH-844 • GTH-1048 • GTH-1056
Section 4 • Repair Procedures
9 Use a soft metal drift to remove the pivot pin.
Remove the cylinder from the machine.
Crushing hazard. The cylinder will
fall if not properly supported when
the pivot pin is removed from the
machine.
a c
b
GTH-1056
j
l k i
a number 0 boom tube
b chain tensioner
c boom tube 2 extension chain
d number 1 boom tube
e boom tube 3 extension chain
f number 2 boom tube
g number 3 boom tube
h front cover
i chain roller (hidden from view)
j boom roller (hidden from view)
k support loop
l extension cylinder
m rear cover
n cable track
o boom tube 2 retraction chain
p boom tube 3 retraction chain
m n o
BOOM COMPONENTS
g
e
d f h
j j
i
p c
a
d f
4 - 11
e
g