Terex Genie Z-40, Service And Repair Manual, Page: 95 / 287

June 2022 Service and Repair Manual
Turntable Rotation Components
Part No. 1268555GT Z ® -62/40 81
10 Attach a suitable lifting device to the lifting
eyes on the turntable rotation assembly.
11 Carefully remove the turntable rotation
assembly from the machine.
Tip-over hazard. The machine
could tip over when the turntable
rotation assembly is removed if
the turntable rotation lock is not
in the locked position.
Crushing hazard. The turntable
rotation assembly could become
unbalanced and fall when
removed from the machine if not
properly supported by the lifting
device.
When installing the turntable rotation
assembly:
1 Install the turntable rotation assembly. Torque
the mounting fasteners to 80 ft-lbs / 108 Nm.
2 Push the backlash pivot plate towards the
turntable bearing as far as possible.
3 Fully turn the backlash adjustment bolt
clockwise. Turn the adjustment bolt 1/2 turn
counterclockwise. Tighten the jam nut.
4 Adjust the turntable rotation gear backlash.
Refer to
How to Adjust the Turntable Gear
Backlash .
How to Adjust the Turntable
Rotation Gear Backlash
The turntable rotation drive hub is mounted on an
adjustable plate that controls the gap between the
rotation motor pinion gear and the turntable
bearing ring gear.
Note: Perform this procedure with the machine on
a firm, level surface and the boom rotated 90° to
either side of the drive chassis.
1 Push the backlash plate towards the platform
end of the machine as far as possible (this will
push the rotation gear into the turntable
bearing ring gear).
2 Loosen the lock nut on the adjustment bolt.
1 adjustment bolt
2 jam nut
3 pivot plate retaining fasteners
3 Turn the adjustment bolt clockwise until it
contacts the backlash pivot plate pin.
4 Turn the adjustment bolt 1/2 turn
counterclockwise. Tighten the lock nut on the
adjustment bolt.
5 Rotate the backlash pivot plate away from the
turntable bearing until it contacts the
adjustment bolt. Torque the retaining
fasteners securing the backlash pivot plate to
specification. Refer to Specifications, Machine
Torque Specifications
.
6 Rotate the turntable through an entire
rotation. Check for tight spots that could
cause binding. Readjust if necessary.