JLG 800A_AJ ANSI Service Manual - Manual (Page 105)

SECTION 3 - CHASSIS & TURNTABLE
3120740 – JLG Lift – 3-49
3.12 SWING HUB INSTALLATION
1. Ensure mounting plate and mounting location of the
base plate are clean and painted with a uniform
coating of minimum thickness. (no runs, drips, etc.)
2. Assemble mounting plate, hub, brake, and motor.
3. Torque Items #1 to 120 ft. lbs.(17kgm)(w/#242 Loc-
tite)
4. Torque Items #2 to 285 ft. lbs.(40kgm)(w/#171 Loc-
tite)
5. Position swing drive to approx. location of bearing
gear max. eccentric tooth. (high spot)
6. With bearing free to slide, shim between pinion gear
and the bearing teeth to +0.008" / +0.012"
(+0.20mm/+0.30mm)backlash.
7. Alternately torque setscrews, item #4 to 30 ft. lbs.
(42 Nm), run jam nut tight against the 1" block.
8. Torque item #3 to 165 ft. lbs.(23 kgm)(w/ hardened
washers and #271Loctite).
Figure 3-38. Swing Torque Hub Adjustment