Western Star 47X 2020, Maintenance Manual

Page: 102 / 166

2. Clean the fill plug and the area around it. In the
axle housing rear cover, remove the plug from
the oil fill hole (or standpipe, if installed in the oil
fill hole). See
Fig. 6 .
3. Place a drain pan under the rear axle drain plug.
See
Fig. 6 . Drain the oil at normal operating
temperature, 150 to 200°F (65 to 93°C). At this
temperature, the oil will run more freely and en-
sure that the axle is flushed.
NOTE: Some tandem drive axles are equipped
with a cylindrical magnetic strainer, located
below the lube pump on the front of the power
divider cover. All rear axles are fitted with mag-
netic drain and fill plugs.
4. At each axle oil change, remove and clean the
magnetic strainer, if equipped. See
Fig. 7 .
4.1 Remove the magnetic strainer from the
power divider cover.
WARNING
Always wear eye protection when using com-
pressed air to clean parts, as flying debris could
cause permanent damage to unprotected eyes. Do
not point the air stream in the direction of other
persons.
4.2 Wash the strainer in solvent, and blow it
dry with compressed air to remove oil and
metal particles.
4.3 Install and tighten the magnetic strainer
40 to 60 lbf·ft (54 to 81 N·m).
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
to short the two magnetic poles and divert
the magnetic field.
5.2 Clean away the collected material depos-
ited on each pole. Magnets will rapidly
lose their effectiveness as collected mate-
rial bridges the gap between the two
poles.
5.3 After the first oil is changed, inspect the
drain plug each time for large quantities
of metal particles.
5.4 After cleaning, install the drain plug(s)
and tighten to 40 to 60 lbf·ft (54 to 81
N·m).
f350018a 10/05/2016
1
2
1. Oil Fill Plug 2. Oil Drain Plug
Fig. 6, Axle Housing Drain and Fill Plugs
f350017a 10/05/2016
1
2
1. Magnetic Strainer 2. Power Divider
Fig. 7, Dana Spicer Tandem Drive Axle Magnetic
Strainer
Rear Axle
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47X and 49X Maintenance Manual, August 2020
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