500,000 miles (800 000 km) for axles using syn-
thetic lubricant with a pump and filter system.
On single drive axles so equipped, the traction equal-
izer may slip or stick. When this happens, the driver
will hear intervals of shrill noises when the vehicle is
driven at low speed or makes sharp turns. Use a
"limited-slip friction modifier" to correct this slip/stick
condition. Add 1.6 ounces (35 mL) of additive for
each pint (0.5 L) of lube capacity.
For all GL-5 oils, add one of the following limited-slip
friction modifiers:
•
Lubrizol No. 6178 (Lubrizol Corporation)
•
DSL-178 (Guardsman Products)
•
Equa-Torque No. 2411 (Sta-Lube Corporation)
•
Equa-Torque No. 2414 (Sta-Lube Corporation)
IMPORTANT: These friction modifiers generally
deteriorate faster than conventional extreme-
pressure additives, so the lubricant change
schedule must be shortened when using these
additives. The traction equalizer additive (and
recommended drive axle lubricant) must be
changed at the Maintenance 2 (M2) interval,
instead of the Maintenance 3 (M3) interval rec-
ommended in the Maintenance Operation Chart
for axles that require only those lubricants rec-
ommended in
Table 3
.
1.
Park the vehicle on a level surface, shut down
the engine, and set the parking brake. Chock the
tires.
2.
Remove the axle carrier fill plug. Then remove
the drain plug from the bottom of the housing.
Completely drain the lubricant while the unit is
warm, to allow the lubricant to drain faster.
On tandem drive axles, it is also necessary to
remove the plug at the bottom of the interaxle
differential housing to drain that lubricant.
3.
If equipped with an oil pump, use a suitable filter
strap wrench to remove the axle oil filter. See
Fig. 3
. Discard the old filter.
NOTE: There may be about one pint (0.5 L) of
lubricant remaining in the filter. Be careful not to
spill it when removing the filter.
4.
Using the recommended drive axle lubricant,
coat the face of the gasket on the new oil filter, if
it was replaced. Install the filter over the adapter,
and tighten the filter one full turn after the gasket
contacts the base; do not overtighten. See
Table
3
for recommended lubricants.
Meritor Drive Axle Recommended Lubricant
Recommended
Lubricant Type
Ambient Temperature
Lubricant SAE
Viscosity Grade
Meritor Specification
Synthetic Gear Oil
–40°F (–40°C) and Up
*
75W–90
0–76–N
–40°F (–40°C) and Up
*
75W–140
0–76–M
*
There is no upper limit on these outside temperatures, but axle sump temperature must never exceed 250°F (121°C).
Table 3, Meritor Drive Axle Recommended Lubricant
5.
Clean the fill and drain plugs. Change them if
necessary.
5.1
For magnetic plugs, use a piece of key
stock or any other convenient steel slug
f350119a
05/27/93
Fig. 3, Meritor Axle Oil Filter Removal
Rear Axle
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