Setting Swing Gear Backlash - JLG 400SC Service And Maintenance Manual

SECTION 3 - CHASSIS & TURNTABLE
10. Install the rotary coupling mount bracket, apply a light
coating of Medium Strength Threadlocking Compound
to the attaching bolts and secure the mount bracket to
the turntable with the mounting hardware.
11. Connect the hydraulic lines, electrical harness and
remote grease fitting line (if equipped) 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.

3.6 SETTING SWING GEAR BACKLASH

1. Set swing gear backlash to 0.005 - 0.010 in
(0.127 - 0.254 mm).
2. Place shim (JLG PN 1001190964) between pinion and
bearing on high spot.
NOTE: High spot is marked with yellow paint.
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3. Apply High Strength Threadlocking Compound to pivot
bolt. Torque to 205 ft-lb (280 Nm).
4. Remove turntable lock pin.
5. Apply High Strength Threadlocking Compound to
remaining swing drive mounting bolts. Torque to
30 ft-lb (40 Nm).
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