Secondary Boom Extension Cylinder - Genie Z80/60 Service Manual

June 2011
REV D
18 Use a soft metal drift to remove the pin.
19 Remove the secondary boom lift cylinder from
the machine by pulling it through the platform
end of the secondary boom.
Crushing hazard. The secondary
boom lift cylinder could become
unbalanced and fall if not properly
supported when removed from the
machine.
Component damage hazard.
When removing the secondary
boom lift cylinder from the
machine, be careful not to damage
the counterbalance valves at the
barrel end of the cylinder.
Component damage hazard.
Cables and hoses can be
damaged if the cylinder is pulled
across them.
Part No. 88619
4-9
Secondary Boom Extension
Cylinder
The secondary boom extension cylinder extends
and retracts the secondary boom extension tube.
The secondary boom extension cylinder is
equipped with counterbalance valves to prevent
movement in the event of a hydraulic line failure.
How to Remove the Secondary
Boom Extension 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 Section 2, Hydraulic Hose and
Fitting Torque Specifications.
Note: The secondary boom extension cylinder
must be removed as an assembly with the cable
tracks, cable track trays and cable track support
tubes from the platform end of the secondary
boom.
1 Raise the primary boom to a horizontal position.
2 Remove the access cover from the
counterweight end of the secondary boom.
Z-80/60
Section 4 • Repair Procedures
BOOM COMPONENTS
4 - 47