Meritor Drive Axle Recommended Lubricant
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
IMPORTANT: Axles should not be flushed with
any solvent, such as kerosene.
6.
Clean the fill and drain plugs. For magnetic
plugs, a piece of key stock or any other conve-
nient steel slug may be used to short the two
magnetic poles and divert the magnetic field.
NOTE: Meritor recommends plugs with ele-
ments having a minimum pickup capacity of
1-1/2 pounds (0.7 kg) of low-carbon steel, in
plate or bar form. Magnets will rapidly lose ef-
fectiveness as collected material bridges the
gap between the two poles. Clean or change
the plugs before this occurs. It may be neces-
sary to clean or change the plugs one or more
times between lubrication change intervals.
7.
After cleaning the drain plug(s), install and
tighten to 35 lbf·ft (47 N·m).
8.
With the vehicle on a level surface, fill the axle
housings to the bottom of the fill hole, using
specified lubricant. See
for recom-
mended axle lubricants, and
for drive
axle lubricant capacities.
NOTE: Some Meritor axles have a small tapped
and plugged hole near and below the housing
lubricant fill hole. This smaller hole is for a lubri-
cant temperature indicator only, and should not
be used as a fill or level hole.
9.
Install and tighten the fill plug 35 lbf·ft (47 N·m).
10. Whenever the interaxle differential housing has
been drained, add an additional 2 pints (1 L) of
specified lubricant directly into the interaxle differ-
ential housing.
11. For a two-speed axle with a shift unit, change
the shift unit lubricant; see elsewhere in this
maintenance operation for the shift unit lubricant
changing procedure.
12. Remove the chocks, then drive the vehicle, un-
loaded, for 1 or 2 miles (2 or 3 km) at speeds
not to exceed 25 mph (40 km/h), to thoroughly
circulate lubricant throughout the carrier and
housing assemblies.
Two-Speed-Axle Shift Unit
Lubricant Changing
Dana Spicer and Meritor Axles
1.
Remove the shift unit housing cover. See
Drain and discard the old lubricant. Discard the
housing cover gasket.
2.
Thoroughly wash the axle shift parts and housing
cover, and allow them to air dry.
3.
Install the housing cover and a new cover gas-
ket. Tighten the housing cover capscrews 7.5 to
9.2 lbf·ft (10.2 to 12.5 N·m), then remove the oil
fill plug from the cover.
f350119a
05/27/93
Fig. 5, Axle Oil Filter Removal
Rear Axle
35
Century Class Trucks Maintenance Manual, April 2005
35/4
Summary of Contents for Argosy COE
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