JLG M600 Service Manual - Manual (Page 84)

SECTION 3 - CHASSIS & TURNTABLE
3-46 – JLG Lift – 3121813
11. Following the torque sequence shown in Figure 3-
28., Swing Bearing Torque Sequence tighten the
bolts to an initial torque of 130 ft. lbs. (175 Nm).
Then following the same sequence, tighten the bolts
to 190 ft. lbs (260 Nm).
12. Remove the lifting equipment.
13. Route hydraulic lines through center of turntable and
frame and connect as tagged prior to removal.
14. Using all applicable safety precautions, activate the
hydraulic system and functionally check swing sys-
tem for proper and safe operation
.
Swing Bearing Torque Value
Install with Loctite - 190 ft. lbs. (260 Nm).
Swing Drive Installation
1. Coat the threads of the socket head bolts securing
the swing drive to the mounting plate with Loctite
#271 and torque to 120 ft.lbs. (168 Nm).
2. Position swing drive to location of bearing gear max
eccentric tooth. High spot is marked with yellow
paint in tooth.
3. With the mounting plate pivoting about the shoulder
bolt, adjust backlash between the pinion and bear-
ing gear teeth to 0.008 to 0.012 inch backlash
(0.20mm to 0.30mm).
4. Tighten the adjusting bolt, jam nut, and shoulder
bolt to prevent the swing drive from moving. Coat
the threads of the shoulder bolt with Loctite #271
and torque to 420 ft.lbs. (588 Nm).
5. Coat the threads of the mounting plate bolts with
Loctite #271 and torque to 420 ft.lbs. (588 Nm).
Setting Backlash
1. Place a shim (JLG P/N 4071009) between pinion
and bearing on high spot of bearing.
2. After applying Loctite #271 to the shoulder bolt,
torque to 420 foot-pounds (588 Nm).
3. Remove the lock pin on the turntable.
4. After applying Loctite #271, torque the four ¾"
socket head bolts to 120 foot-pounds (168 Nm).
5. Tighten the setscrew until the pinion is snug against
the shim and bearing.
6. Torque the setscrew to 50 foot-pounds (70 Nm).
7. Tighten the jam nut.
8. Torque the four ¾" socket head bolts to 420 foot-
pounds (588 Nm).
9. Recover the shim and throw it away.
Figure 3-28. Swing Bearing Torque Sequence