Repair Or Replace Parts - Meritor MS-113 Maintenance Manual

Section 3
Prepare Parts for Assembly
Figure 3.5
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1 SPALLING AND FLAKING
CAUTION
A drive pinion and ring gear is machined as a
matched set. When you replace either a drive
pinion or a ring gear, you must replace both parts
as a matched set. Do not mix old and new parts.
Damage to components can result.
2. Inspect pinions and gears for wear or damage.
Replace gears that are worn or damaged.
CAUTION
A thrust washer, differential side gear and pinion
gear are machined as a matched set. When you
replace any of these parts, you must install a new
matched set. Do not mix old and new parts.
Damaged to components can result.
3. Inspect the following main differential
assembly parts for wear or stress. Replace
parts that are damaged. Figure 3.6.
Inside surfaces of both case halves
Both surfaces of all thrust washers
The differential pinion shaft
Teeth and splines of both differential
side gears
Teeth and bore of all differential pinions
4. Inspect axle shafts for wear and cracks
at the flange, shaft and splines. Replace the
axle shafts, if required.
Page 10
Figure 3.6
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3
1 CASE HALVES
2 PINION AND THRUST WASHER
3 SIDE GEAR AND THRUST WASHER
4 DIFFERENTIAL PINION SHAFT

Repair or Replace Parts

NOTE: Threads must be without damage and
clean so that accurate adjustments and correct
torque values can be applied to fasteners and
parts.
1. Replace any fastener if corners of the head
are worn.
2. Replace washers if damaged.
3. Replace gaskets, oil seals or grease seals at
the time of axle or carrier repair.
4. Clean parts and apply new silicone gasket
material where required when the axle or
carrier is assembled. Figure 3.7.
5. Remove nicks, marks and burrs from parts
with machined or ground surfaces. Use a fine
file, india stone, emery cloth or crocus cloth.
6. Clean and repair threads of fasteners and
holes. Use a die, a tap of the correct size, or
a fine file.
Copyright 2002
ArvinMeritor, Inc.
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Maintenance Manual MM-0230
Issued 07-02