Inspect For Turntable Bearing Wear - Genie S-60 TraX Service Manual

Section 3 • Scheduled Maintenance Procedures
CHECKLIST D PROCEDURES
D-3
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.
Note: Perform this procedure with the machine on a
firm, level surface and the boom in the stowed
position.
1 Grease the turntable bearing. See A-13, Grease
the Turntable Bearing and Rotate Gear.
2 Torque the turntable bearing bolts to
specification. See D-2, 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.
3 - 56
4 Place a dial indicator between the drive chassis
Note: To obtain an accurate measurement, place
the dial indicator no more than 1 inch / 2.5 cm from
the turntable rotation bearing.
a
b
c
d
5 At the dial indicator, adjust it to "zero" the
6 Fully extend the boom and lower to a horizontal
7 Note the reading on the dial indicator.
S-60 • S-65 • S-60 TRAX • S-65 TRAX
S-60 HC • S-60X • S-60XC
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.
a turntable
b dial indicator
c drive chassis
d turntable rotation bearing
indicator.
position.
Result: The measurement is less than
0.063 inch / 1.6 mm. The bearing is good.
Result: The measurement is more than
0.063 inch / 1.6 mm. The bearing is worn and
needs to be replaced.
December 2013
Part No. 147753