
Service and Repair Manual
October 2016
Boom Components
60
SX-135 XC
Part No. 1263382
4-3
Primary Boom Lift Cylinder
The primary boom lift cylinder raises and lowers
the primary boom. The primary boom lift cylinder is
equipped with a counterbalance valve to prevent
movement in the event of a hydraulic line failure.
How to Remove the Boom 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.
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 Raise the boom until there is approximately
4 feet / 1.2 m between the turntable and boom
rest pad.
2 Attach a lifting strap from an overhead crane
or other suitable lifting device to the rod end of
the the boom lift cylinder.
3 Attach an overhead 10 ton / 9071 kg crane to
the platform end of the boom for support. Do
not lift the boom.
Note: Place the lifting strap between the cable
track assembly and the boom.
4 Remove the boom storage area cover
retaining fasteners. Remove the cover from
the machine.
5 Remove the pin retaining fastener from the
boom lift cylinder rod-end pivot pin. Use a soft
metal drift to remove the pin. Protect the
cylinder rod from damage.
Crushing hazard. The boom lift
cylinder may fall when the
rod-end pivot pin is removed if
the boom lift cylinder is not
properly supported by the
overhead crane.
Crushing hazard. The boom
may fall when the rod-end pivot
pin is removed if the boom is
not properly supported by the
overhead crane.
6 Place support blocks under the boom lift
cylinder.
7 Using the Auxiliary Power Unit, retract the
boom lift cylinder until the rod end will clear
the boom weldment.
8 Carefully lower the rod end of the boom lift
cylinder down onto the support blocks.
Содержание Genie SX-135 XC
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