Secondary Boom Lift Cylinder - Genie ZX-135/70 Service Manual

Service Manual
Boom Components
4 Tag, disconnect and plug the primary boom lift
cylinder hydraulic hoses. Cap the fittings on
the cylinder.
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.
5 Attach a lifting strap from an overhead crane
to the rod end of the primary boom lift
cylinder. Do not apply any lifting pressure.
6 Remove the pin retaining fasteners from the
primary boom lift cylinder rod-end pivot pin.
Use a soft metal drift to remove the pin and
rest the cylinder on the block.
7 Attach a lifting strap from a second overhead
crane to the barrel end of the primary boom lift
cylinder. Do not apply any lifting pressure.
8 Remove the primary boom lift cylinder
barrel-end pivot pin retaining fasteners.
9 Use a soft metal drift to remove the barrel-end
pivot pin. Carefully remove the primary boom
lift cylinder from the machine.
Crushing hazard. The boom lift
cylinder may become
unbalanced and fall if it is not
properly supported when it is
removed from the machine.
Crushing hazard. The primary
boom lift cylinder linkage arms
may fall if not properly
supported when the barrel-end
pivot pin is removed.
134
4-5

Secondary Boom Lift Cylinder

How to Remove the Secondary
Boom 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.
Note: Perform this procedure with the machine on
a firm, level surface and in the stowed position with
the axles extended.
1 Tag, disconnect and plug the hydraulic hoses
from the secondary boom lift cylinder. The
hoses can be accessed from under the
turntable.
ZX-135/70
August 2014
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.
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. 218700