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11
Lubrication and Maintenance
4.
Install and tighten the fill plug to 35-50 Ib-ft (48-67 Nm).
Drain and Replace the Axle Oil
1.
Verify that the vehicle is parked on a level surface. Place a
large container under the axle.
2.
Remove the drain plug from the bottom of the axle. Drain
and discard the oil correctly.
3.
Clean, install and tighten the drain plug to 35-50 Ib-ft
(48-67 N m).
4.
Remove the fill plug from the axle.
5.
Fill the axle to the bottom of the fill plug hole with the
specified oil. Allow enough time for oil to circulate through
the axle assembly.
6.
Install and tighten the fill plug to 35-50 Ib-ft (48-67 Nm).
Hub Check, Drain and Fill Procedures
for Drive Axles Equipped with Wheel-
End Fill Plugs
Wheel Hub Oil Level Inspection
1.
Park the vehicle on a level surface. Place blocks under
the wheels not being serviced to prevent the vehicle from
moving.
2.
Raise the vehicle so that the wheels to be serviced are off
the ground. Support the vehicle with safety stands.
3.
Rotate the hub so the fill/drain plug is at 3 or 9 o'clock
position.
4.
Remove the plug and check if the oil is even with the
bottom of the plug hole.
If the oil flows from the hole when the plug is
removed: The oil level is high. Let the oil drain to the
correct level.
If the oil level is below the bottom of the plug hole:
Add the specified oil until it is at the bottom of the plug
hole.
Wheel Hub Oil Drain
1.
Park the vehicle on a level surface. Place blocks under
the wheels not being serviced to prevent the vehicle from
moving.
MM-0170 / Revised 03-23
Page 66
2.
Raise the vehicle so that the wheels to be serviced are off
the ground. Support the vehicle with safety stands.
3.
Rotate the hub so the fill/drain plug is at 6 o'clock position.
4.
Place a drain pan under the wheel end to catch the oil.
5.
Remove the drain/fill plug and drain the oil until it stops
flowing.
Wheel Hub Oil Fill
1.
Rotate the hub so the fill/drain plug is at 12 o'clock
position. Figure 11.1.
Figure 11.1
2.
Refill the hub with 2 pints (1 L ) of oil, and then perform the
Road Test for Wheel End Oil Level procedure in this section.
3.
Install the drain/fill plug and tighten to 51-59 lb-ft
(69-80 Nm).
Road Test for Wheel End and Axle Housing Oil Level
1.
Road test the vehicle after initial hub fill procedure in an
unloaded condition for one to two miles at safe speeds, but
no higher than 25 mph (40 km/h).
2.
Wait approximately ten minutes after completing the road
test for the oil to settle.
3.
Rotate the wheel hub so the fill/drain plug is at 3 or 9
o'clock position.
4.
Remove the wheel end oil fill/drain plug and check if the
oil level is at the bottom of the plug hole. Perform oil level
check on both wheel-end hubs.
5.
Install the drain/fill plug and tighten to 51-59 lb-ft
(69-80 Nm).
Copyright Meritor, Inc., 2023
OIL FILL/
DRAIN PLUG
4011694c
(16579)
Printed in USA
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