Swing Bearing Torque Values - JLG 600A Service And Maintenance Manual

5. Using suitable lifting equipment, carefully position the
turntable assembly above the machine frame.
6. Carefully lower the turntable onto the swing bearing,
ensuring that the scribed line of the inner race of the
bearing aligns with scribed line on the turntable. If a
new swing bearing is used, ensure that the filler plug
fitting is at 90 degrees from the fore and aft center line
of the turntable.
7. Clean any residue off the new bearing bolts, then apply
a light coating of Loctite #271 and install the bolts and
washers through the turntable and inner race of the
bearing.
8. Following the Torque Sequence diagram shown in
Figure 3-61., Swing Bearing Torque Sequence, tighten
the bolts to a torque of 190 ft. lbs. (260 Nm) w/Loctite.
9. Remove the lifting equipment.
10. Install the rotary coupling retaining yoke brackets, apply
a light coating of Loctite #242 to the attaching bolts and
secure the yoke to the turntable with the mounting
hardware.
11. Connect the hydraulic lines to the rotary coupling as
tagged prior to removal.
12. At ground control station, use boom lift control to lower
boom to stowed position.
13. Using all applicable safety precautions, activate the
hydraulic system and check the swing system for proper
and safe operation.
3121201
Figure 3-61. Swing Bearing Torque Sequence
SECTION 3 - CHASSIS & TURNTABLE

Swing Bearing Torque Values

1. Outer Race - 190 ft. lbs. (260 Nm) w/Loctite.
2. Inner Race - 190 ft. lbs. (260 Nm) w/Loctite.
3. See Swing Bearing Torquing Sequence.
CHECK THE INNER AND OUTER SWING BEARING BOLTS FOR MISSING OR
LOOSENESS AFTER FIRST 50 HOURS OF OPERATION, AND EVERY 600 HOURS
THEREAFTER.
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