Inspect For Turntable Bearing Wear - Genie S-80 Service Manual

February 2017
D-4
Inspect for Turntable Bearing
Wear
Genie specifications require that this procedure be
performed every 1000 hours or annually,
whichever comes first.
Periodic inspection of turntable bearing wear is
essential to safe machine operation, good machine
performance and service life. Continued use of a
worn turntable bearing could create an unsafe
operating condition, resulting in death or serious
injury and component damage.
1 Grease the turntable bearing. Refer to
Maintenance Procedure, Grease the
Turntable Bearing and Rotate Gear.
2 Torque the turntable bearing bolts to
specification. Refer to Maintenance
Procedure, Check the Turntable Rotation
Bearing Bolts.
3 Start the machine from the ground controls
and raise the boom to full height. Do not
extend the boom.
Part No. 1259369GT
Checklist D Procedures
4 Place a dial indicator between the drive
chassis and the turntable at a point that is
directly under, or inline with, the boom and no
more than 1 inch / 2.5 cm from the bearing.
Note: To obtain an accurate measurement, place
the dial indicator no more than 1 inch / 2.5 cm from
the turntable rotation bearing.
1 turntable
2 dial indicator
3 drive chassis
4 turntable rotation bearing
5 Adjust the dial indicator needle to the "zero"
position.
6 Fully extend the boom and lower to a
horizontal position.
7 Note the reading on the dial indicator.
Result: The measurement is less than 0.118
inch / 3.0 mm. The bearing is good.
Result: The measurement is more than0.118
inch / 3.0 mm. The bearing is worn and needs
to be replaced.
S-80 • S-85 • S-80X
Service Manual
61