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2 Repairing the wheel end assembly
Fig. 28
Fig. 29
20
ArvinMeritor Wheel end assembly
Measure the distance between the sun gear thrust washer and
the face of the hub casing. (Record Dim A) fig 28.
Check sun gear free movement as follows:
• Pull out the sun gear approximately 10 mm.
• Offer up the cover plate into its position against the end of the
hub casing.
• Remove the cover, and remeasure the depth of the sun gear
thrust washer, as previously (Record Dim B).
• Ensure that Dim B is shorter than Dim A by 1 to 2 mm.
• If outside these limits, remove the thrust pin and change the
number of washers under the pin by the following procedure.
Remove the serrated thrust pin from the cover plate. Select a
serrated thrust pin for the cover plate and the number of washers
to be fitted under the pin in the cover so that the total length of
pin and washers is 0.4 to 0.6 mm shorter than the Dim A.
Place the washer in the pin bore in the cover plate and drive the
pin into the cover plate, ensuring that the serrations in the pin do
not engage in the former position. Then remeasure Dims. A and B
Refit the magnetic washer over the thrust pin and retain in
position with a new star lock fastener.
Apply sealing compound in approx. 6mm dia. bead (Dow Corning
7091) to the inner face of the cover plate in a continuous bead.
The components must be assembled immediately to permit the
silicone gasket material to compress evenly between the mating
surfaces. Refit the cover plate on the end of the hub casing and
retain with bolts and tighten to 20Nm ± 5Nm
Fill hub with 3 litres of oil as specified by vehicle manufacturer.
Fit new oil drain plug and tighten to 80Nm ± 20Nm
NOTE
: with new hub cap there is an oil level line that aligns
with the bottom of the filler hole. When line is horizontal it is an
indication of permitted oil capacity. (fig. 29)
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