Spicer Tandem Drive Axles Pro-40 Single Reduction and Single Reduction with Differential Lock - Manual (Page 83)

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Lubrication
Change Lube
Drain
Drain when the lube is at normal operating temperature
(150°–200°F). It will run freely and minimize the time neces-
sary to fully drain the axle, this insures the axle is flushed.
Unscrew the magnetic drain plug on the underside of the axle
housing and allow the lube to drain into a suitable container.
Note: Dispose of all used lubricants properly by following dis-
posal methods approved for mineral or synthetic based
oils.
After initial oil change, inspect drain plug for large quantities
of metal particles. These are signs of damage or extreme wear
in the axle. Clean the drain plug and replace it after the lube
has drained completely. Inspect breather for clogging or cor-
rosion. Clean or replace as necessary.
Fill
Front Axle
a. With vehicle on level ground, remove the filler hole
plug from the axle housing cover and fill the axle
with approved lubricant until level with the bottom of
the hole.
Rear Axle
a. Remove the filler hole plug from the axle housing
cover and fill the axle with the approved lubricant
until level with the bottom of the hole.
b. If wheel ends were removed, follow instructions in
wheel end servicing page 40.
Always use the filler hole as the final reference. If lube is level
with the bottom of the hole, the axle is properly filled.
Note: Lube fill capacities (see chart) are basic guidelines and
will vary based on the angle the axle is installed in a par-
ticular chassis. Torque fill plug to 40–60 lbs. ft.
(54–82 N•m).
TIP: The axle can be filled through the axle housing breather
hole. Fill until lube level is even with the bottom of filler hole in
axle housing rear cover.
Correct lube level at bottom of filler hole.
1 - With axle on level surface, fill housing with oil to bottom
of plug
2 - Temperature sensor mounting hole