Contaminated Lubricant Found During Preventive Maintenance - Meritor MS-113 Maintenance Manual

Section 5
Diagnostics

Contaminated Lubricant Found During Preventive Maintenance

Indicates
Milky,
that water
Brownish
is entering
the axle.
Inspect the
breather.
Breather Yes
clogged?
No
Inspect the
pinion seals
for leaks.
No
Seal
leaking?
Yes
Replace the pinion
seal with a
unitized seal.
Replace the pinion
cage O-ring with
a new O-ring.
Fill the carrier
with the correct
amount of the
specified lubricant.
Refer to Section 6.
Clean the seal area.
Test drive the
vehicle to confirm
that the leak is
repaired. Return the
vehicle to service.
Page 32
Visually
inspect the
lubricant.
Silvery
Lubricant
color?
Clean or replace the
breather. A clogged
breakdown in the carrier,
breather can cause
refer to the Differential
a seal leak.
Making Noise diagnostic
flowchart in this publication.
Inspect the
carrier-to-housing
joint for leaks.
Joint No
leaking?
repair welding procedures.
Yes
Drain and
inspect the
lubricant.
Refer to MM 1.
Remove the
carrier from
the axle. Refer to
Section 2.
Indicates
metallic
contamination.
Send out a lubrication
sample for analysis.
Advise the owner to
return for the results.
If analysis results
indicate wear or
Inspect the axle housing
welds for cracks or leaks.
If you find weld cracks,
contact Meritor for
Copyright 2002
ArvinMeritor, Inc.
Clean and prepare the
housing and carrier
flanges. Apply the correct
gasket or silicone.
Refer to Section 3.
Install the carrier.
Refer to Section 4.
Fill the carrier with
the correct amount
of the specified lubricant.
Refer to Section 6.
Test drive the vehicle
to confirm that the
leak is repaired. Return
the vehicle to service.
Maintenance Manual MM-0230
Issued 07-02