Lift Cylinder - Genie GR-12 Service Manual

Section 4 • Repair Procedures
MAST COMPONENTS
3-4

Lift Cylinder

The lift cylinder is equipped with a normally closed
solenoid valve to prevent movement in the event of
a hydraulic line failure.
How to Remove the Lift Cylinder
Bodily injury hazard. This
procedure requires specific repair
skills, lifting equipment and a
suitable workshop. Attempting this
procedure without these skills and
tools could result in death or
serious injury and significant
component damage. Dealer
service is strongly recommended.
When removing a hose assembly
or fitting, the O-ring on the fitting
and/or hose end must be replaced
and then torqued to specification
during installation.
Refer to Section Two, Hydraulic
Hose and Fitting Torque
Specifications.
1 Remove the mast. See 3-1, How to Remove the
Mast Assembly.
2 Rotate the mast until the carriage is facing
down.
3 Remove the socket head retaining fastener
from the clevis block on the lift cylinder rod end
at the top of the number 1 column.
4 Remove the lift cylinder barrel end mounting
fasteners.
5 Loosen the lift cylinder mounting bracket
fasteners.
6 Support the cylinder and carefully slide it out of
the mast assembly.
Crushing hazard. The lift cylinder
could become unbalanced and fall
if not properly supported when
removed from the mast.
4 - 20
a
b
c
d
a
b
c
d
e
f
g
h
GR-12 • GR-15 • GR-20
top of number 1 column
clevis block (not shown)
clevis block fastener
lift cylinder (not shown)
check valve
flow control
cylinder
manual lowering valve
M
L
N
f
e g h
November 2005
REV B
Part No. 84700