JLG 680S Service Manual - Manual (Page 51)

SECTION 3 - CHASSIS & TURNTABLE
3121234 – JLG Lift – 3-3
Assembly and Installation
1. If re-installing the old studs or installing new ones,
coat the threads of the studs with Loctite #242
before screwing them into the torque hub.
2. Install a new o-ring between the drive brake and
torque hub and slide the drive brake over the studs
with the brake port positioned as shown.
3. Install a new o-ring between the drive brake and
drive motor and slide the drive motor over the studs.
Install the washers and nuts to secure the assembly
together and torque the nuts to 75 ft. lbs. (102 Nm).
4. Place the torque hub flange against the mounting
flange on the axle and fasten it in place with the bolts
and washers. Torque the bolts to 220 ft. lbs. (298
Nm).
5. Install the tire and wheel assembly.
Figure 3-1. Torque Hub Installation - 2WD