3-6
GTH-5519
Part No. 1272852
September 2016
Section 3 • Repair Procedures
1-2
Boom Lift Cylinder
How to Remove the Lift
Cylinder
Note: 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 2,
Hydraulic Hose
and Fitting Torque Specifications
.
1
1 Lift the boom until the pin locking the lift
Lift the boom until the pin locking the lift
cylinder - rod side - is in a position above the
cylinder - rod side - is in a position above the
cab roof. .
cab roof. .
2
2 Attach a lifting strap from an overhead 22045
Attach a lifting strap from an overhead 22045
lbs / 10,000 kg crane to the fork end of the
lbs / 10,000 kg crane to the fork end of the
boom. Support the boom. Do not apply any
boom. Support the boom. Do not apply any
lifting pressure.
lifting pressure.
3
3 Tag, disconnect and plug the hydraulic hoses
Tag, disconnect and plug the hydraulic hoses
connected to the shut-off valve. Cap the fittings.
connected to the shut-off valve. Cap the fittings.
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.
NOTICE
Component damage hazard.
Hoses can be damaged if they
are kinked or pinched.
4
4 Attach a lifting strap from an overhead crane
Attach a lifting strap from an overhead crane
to the rod end of the lift cylinder. Support the
to the rod end of the lift cylinder. Support the
cylinder. Do not apply any lifting pressure.
cylinder. Do not apply any lifting pressure.
5
5 Place a suitably dimensioned wooden block
Place a suitably dimensioned wooden block
before the hydraulic oil tank. This block will be
before the hydraulic oil tank. This block will be
used to support the weight of the lift cylinder
used to support the weight of the lift cylinder
first, and the boom afterwards.
first, and the boom afterwards.
6 Remove the fasteners securing the lift cylinder
rod-end pivot pin to the boom.
DANGER
Crushing hazard. The boom
will fall if not properly supported
when the pivot pin is removed
from the machine.
7
7 Lower the lift cylinder and place it on the
Lower the lift cylinder and place it on the
wooden block previously positioned.
wooden block previously positioned.
8 Remove the fasteners securing the lift cylinder
barrel-end pivot pin to the chassis.
9 Use a soft metal drift to remove the pivot pin.
10 Remove the cylinder from the machine.
DANGER
Crushing hazard. The cylinder
could fall if not properly
supported when removed from
the machine.
11 Using the overhead crane, raise and place the
boom on the wooden block suitably positioned.
BOOM COMPONENTS
