freightliner Custom Classic MT45 2022, Maintenance Manual

Page: 73 / 138

1. With the vehicle on a level surface, rotate the
front wheels and allow the oil in the hubs to
settle.
2. Chock the tires.
IMPORTANT: The oil level should be at, or no
more than 1/4 inch (6 mm) above the level indi-
cators on the hub caps.
3. If necessary, remove the filler caps (in the ends
of the hub caps) and add enough oil (80W–90
hypoid gear oil) to bring the oil to the proper
level.
4. Rotate the wheels, allow the oil to settle, and
check the levels again.
5. Install the filler caps securely.
6. Remove the chocks from the tires.
33–06 Oil-Filled Hubs Oil
Changing
WARNING
Be careful not to overfill the hubs. Overfilling may
cause oil to be forced out of the hubs and to con-
taminate the brake linings and other brake compo-
nents. This could result in loss of vehicle control
and lead to personal injury and property damage.
1. With the vehicle on a level surface, rotate the
front wheels so that the front hub drain plugs are
positioned downward.
2. Chock the tires.
3. Place suitable containers under the hubs, re-
move the filler caps (in the ends of the hub caps)
and the drain plugs, and allow the hubs to drain
completely. See
Fig. 8 .
4. Install the drain plugs and tighten 25 lbf·in (282
N·cm).
5. Add approximately 1 to 1-1/2 pints (0.5 to 0.7 L)
of oil (80W–90 hypoid gear oil) to each hub.
6. Rotate the wheels, allow the oil to settle, and
check the levels.
IMPORTANT: Fill the hubs to the level indicators
on the hub caps, or to no more than 1/4 inch (6
mm) above the indicators. See
Fig. 8 .
7. Install the filler caps securely.
f330247 b
A
1
2
07/09/2009
A. Hub Cavity Full
1.
Fill Plug/Magnetic Drain
2. Drain Plug
Fig. 8, Oil-Filled Hub Cap
Front Axle
33
Walk-In Van Chassis Maintenance Manual, July 2015
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