JLG 1850SJ Service Manual - Manual (Page 63)

SECTION 3 - CHASSIS & TURNTABLE
3121619 – JLG Lift – 3-21
3.9 FREE WHEELING OPTION
Disengage Drive Motors & Brakes for Towing, etc.
(Free Wheel)
1. Chock wheels.
2. Removing screws and invert cover so center tip presses
on disengagement pin in hub. Reinstall screws.
3. Remove chocks.
Engage Drive Motors & Brakes (Normal Operation)
1. Chock wheels.
2. Removing screws and invert cover so center tip faces
out. Reinstall screws.
3. Remove chocks.
Figure 3-12. Disengaging Drive Hubs
3.10 GEAR HUB OIL SERVICE
Check Oil Level
1. Position hub as shown in Figure 3-13.
2. Remove Level Plug (3) and check oil is level with plug
opening. Add oil as needed.
3. Reinstall plug.
Change Gear Hub Oil
NOTE: Change oil when reduction gear is hot.
1. Position hub as shown in Figure 3-13.
2. Place suitable tray underneath to collect waste oil.
3. Remove three plugs.
4. Flush gear hub with appropriate solvent.
5. Reinstall Drain Plug (2).
6. Fill with oil until level reaches level hole.
7. Reinstall Level Plug (3) and Fill Plug (1).l
Figure 3-13. Gear Hub Oil Fill and Drain
DISENGAGEMENT
COVER
DRIVE
HUB
DRIVE
HUB
Drive Hub Engaged
Drive Hub Disengaged
DISENGAGEMENT
COVER (REVERSED)
1
2
3