JLG M450 ANSI Service Manual - Manual (Page 83)

SECTION 3 - CHASSIS & TURNTABLE
3121127 – JLG Lift – 3-43
Swing Bearing Torque Value
Install with Loctite - 190 ft. lbs. (260 Nm).
Checking Worm Gear End Play
NOTE: JLG Industries requires that a annual inspection be
performed on the worm gear end play.
1. Using a dial indicator, measure end play of worm
gear, by applying side to side movement by hand to
platform.
2. If tolerance exceeds 0.010", reduce end play to less
than 0.005". Refer to Adjusting End Play.
Adjusting End Play
1. Remove end plate.
2. Measure and record total thickness of existing shim
pack.
3. Determine thickness of shim pack required to obtain
0.001" - 0.005" end play.
4. Adjust shim pack thickness as required to obtain
proper end play. Reduce end play by removing
thicker shims and replacing with thinner shims,
included in kit.
5. Replace end plate and torque bolts to 90 ft. lbs. (122
Nm).
6. Recheck end play.
Allowable Tolerance
.001 to .005 ( )
Fig 2 Adjusting End Play.
END PLATE
SHIMS