Boom Lift Cylinder - Genie S-100 Service And Repair Manual

Section 3 • Repair Procedures
BOOM COMPONENTS
4-3

Boom Lift Cylinder

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 on the fitting and/or hose end must be
replaced and then 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.
4 Remove the boom storage area cover retaining
fasteners. Remove the cover from the machine.
3 - 44
5 Place support blocks under the boom lift
cylinder.
6 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.
7 Carefully raise the boom with the overhead
crane until the rod end of the boom lift cylinder
can be removed.
8 Carefully lower the rod end of the boom lift
cylinder down onto the support blocks.
9 Carefully raise the boom with the overhead
crane until the barrel end of the boom lift
cylinder is accessible.
10 Tag, disconnect and plug the boom lift cylinder
hydraulic hoses. Cap the fittings on the cylinder.
S-100 • S-105 • S-120 • S-125
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.
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.
Part No. 1268494
March 2017