JLG 18RS Service Manual - Manual (Page 43)

SECTION 3 - CHASSIS & TURNTABLE
3121284 – JLG Lift – 3-5
3.5 DRIVE HUB
Removal
1. Place the machine on a firm, level surface.
2. Use an adequate jack to lift up the axle enough to
remove the tire and wheel assembly and place blocking
underneath the axle for support.
NOTE: If removing a drive hub from the steer axle, turn the tires in
a direction that will allow maximum access to the drive
hub components. On non-steer axle, the access cover must
be removed.
NOTE: The tire and wheel assembly weighs approximately 513 lbs.
(233 kg).
3. Remove the tire and wheel.
4. Remove the bolts securing the drive motor to the hub
and carefully pull the motor away from the drive hub,
taking care not to kink or put stress on the hydraulic
hoses.
5. Place a container under the drive brake to catch hydrau-
lic oil.
6. Tag and disconnect the hydraulic lines running to the
drive brake.
NOTE: The hub weighs approximately 101 lbs. (45.8 kg).
7. Use a device capable of supporting the weight of the
hub to hold it in position.
8. Remove the bolts and washers securing the hub to the
axle or spindle and pull the hub away from the machine.
* Apply JLG Threadlocker P/N 0100019
** Torque to 190 ft.lbs. (260 Nm)
*
**
DRIVE HUB
DRIVE BRAKE
DRIVE MOTOR
Figure 3-2. Drive Hub/Motor Installation