Part No. 43063
Genie Z-30/20
4 - 15
Service Manual - Third Edition
Section 4 - Scheduled Maintenance Procedures
Table C Procedures
C-1
Check the Primary Boom
Wear Pads
Maintaining the primary boom wear pads in good
condition is essential to safe machine operation.
Wear pads are placed on boom tube surfaces to
provide a low friction, replaceable wear pad
between moving parts. Improperly shimmed wear
pads or continued use of worn out wear pads may
result in component damage and unsafe operating
conditions.
1 Turn the key switch to ground control and lift
the red Emergency Stop switch cover and
move the toggle switch to the
ON
position.
2 Extend the primary boom 10 inches (25 cm).
3 Measure each wear pad. Replace the wear pad
if it is less than 0.41 inches (1 cm) thick. If the
wear pad is more than 0.41 inches (1 cm)
thick, shim as necessary to obtain zero
clearance and zero drag.
4 Extend and retract the primary boom through
the entire range of motion to check for tight
spots that could cause binding or scraping.
Always maintain squareness
between the primary boom outer
and inner tubes.
C-2
Check the Turntable Rotation
Bearing Bolts
Maintaining proper torque on the turntable bearing
bolts is essential to safe machine operation.
Improper bolt torque could result in an unsafe
operating condition and component damage.
1 Raise the secondary boom and place a safety
chock on the secondary boom lift cylinder.
The lift cylinder safety chock is
available through Genie (part
number 36555).
2 Carefully lower the boom onto the lift cylinder
safety chock.
Crushing hazard. Keep hands
away from the cylinder and all
moving parts when lowering the
secondary boom.
2 Check to ensure that each turntable bearing
bolt is torqued in specified order to
190 foot-pounds (258 Newton meters).
Bolt torque sequence
3 Remove the safety chock. Lower the boom to
the stowed position.
4 Disconnect the battery packs from the
machine.
5 Remove the mounting fasteners from both
battery packs. Use a lifting device to remove
the battery packs from the machine.
