April 2018
Service and Repair Manual
Boom Components
Part No. 1287211GT
GTH-1056
29
1-3
Boom Lift Cylinder
How to Remove the Lift Cylinder
Note: When removing a hose assembly or fitting,
the O-ring (if equipped) on the fitting and/or hose
end must be replaced. All connections must be
torqued to specification during installation. Refer to
Specifications,
Hydraulic Hose and Fitting Torque
Specifications.
1 Attach a lifting strap from an overhead 10 ton /
10,000 kg crane to the fork end of the boom.
Support the boom. Do not apply any lifting
pressure.
2 Tag, disconnect and plug the hydraulic hoses
at the lift cylinder manifold. Cap the fittings.
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.
Component damage hazard.
Hoses can be damaged if they
are kinked or pinched.
3 Attach a lifting strap from an overhead crane
to the rod end of the lift cylinder. Support the
cylinder. Do not apply any lifting pressure.
4 Remove the fasteners securing the lift cylinder
barrel-end pivot pin to the chassis.
5 Use a soft metal drift to remove the pivot pin.
6 Remove the fasteners securing the lift cylinder
rod-end pivot pin to the boom.
7 Use a soft metal drift to remove the pivot pin.
Crushing hazard. The boom will
fall if not properly supported
when the pivot pin is removed
from the machine.
8 Using the overhead crane, raise the boom to a
horizontal position. Remove the cylinder from
the machine.
Crushing hazard. The cylinder
will fall if not properly supported
when removed from the
machine.
Содержание Genie GTH1056
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