Check The Turntable Rotation Gear Backlash - Genie S-105 Service Manual

June 2011
REV A
3 Be sure that each turntable rotation bearing
mounting bolt above the turntable is torqued in
sequence. Refer to Section 2, Specifications.
Bolt torque sequence
4 Raise the boom to a horizontal position.
5 Remove the safety chock and lower the boom to
the stowed position.
6 Be sure that each turntable rotation bearing
mounting bolt under the drive chassis is torqued
in sequence. Refer to Section 2, Specifications.
Note: The turntable rotation bearing bolt torque
sequence is the same from above the turntable and
below the drive chassis.
Part No. 102916
Section 3 • Scheduled Maintenance Procedures
D-5
Check the Turntable Rotation
Gear Backlash
Genie specifications require that this procedure be
performed every 1000 hours or annually, whichever
comes first.
Properly adjusted turntable rotation gear backlash
is essential for good machine performance and
service life. Improperly adjusted turntable rotation
gear backlash will cause the machine to perform
poorly and continued use will cause component
damage. The turntable rotation drive hub is
mounted on the swing chassis behind the fixed side
cover at the ground controls side.
Note: Be sure to check the backlash with the
machine fully stowed and the counterweight at the
square end of the machine.
Note: Select a test area that is firm, level and free
of obstructions.
1 Rotate the turntable until the boom is centered
between the circle end wheels.
2 Apply approximately 20 lbs / 89 N of side force
to the platform, moving the platform to one side
as far as it will go.
S-100 • S-105 • S-120 • S-125 3 - 53