MCi Crusader II 1989 Maintenance Manual page 41

Date
Page
2-13
MC-9 MAINTENANCE MANUAL
a. Inside surfaces of both case halves.
b.· Both surfaces of all thrust washers. .
c. The four trunnion ends of the spider (cross).
d. Teeth and splines of both differential side gears.
e. Teeth and bore of all differential pinions.
CAUTION: Always replace thrust washers,
differential side gears and pinion gears in
sets. A higher stress on parts and early fail•
ure of the assembly will occur if a new part
is used with pans that are old or worn.
4. Inspect Axle Shafts: Inspect axle shafts for wear and
cracks at the flange, shaft and splines. Replace axle shaft if
required.
REPAIRING AND REPLACING FASTENERS
All threads of the fasteners and holes in the assembly must
be without damage and clean so that accurate adjustments and
correct torque values can be applied to the fasteners and parts.
Use the following procedures to ensure that all fasteners and
threaded holes are in good condition.
1. Replace any fastener if the corners of the head are worn
or distorted.
2. Clean and repair threads of fasteners and holes. Use a die
or tap of the correct size or a fine file for this purpose.
3. Replace any damaged washer.
4. When installing new fasteners of the "Dri-Loc" type, do not
apply adhesives or sealants to the new fastener or to the hole.
The "Ori-Loe" adhesive will notfunction correctly iHhis is done.
s.
When the old fasteners are being reused:
a. Clean the oil and dirt from threaded holes. There is no
special cleaning required and it is not necessary to remove the
old Ori-Loe adhesive from threads.
b. Apply four or five drops of Rockwell Liquid Adhesive or
Loctite 277 to threaded holes only. Make sure the adhesive is
on the threads. CAUTION: Do not apply adhesive to the fastener
threads. Air pressure in the hole will push the adhesive out as
the fastener is installed.
INSTALLING FASTENERS
When installing the fasteners. torque to the required value
for that size fastener. See Torque Value Chart later in this
section. Always use a torque wrench (Figure 2-34}.
CHECKING TORQUE OF UNREMOVED FASTENERS
If Dri-Loc fasteners do not require removal from compo-
nents. check the fasteners for correct torque vali.;e as follows:
1. Apply the minimum amount of torque required for that
size fastener. See the torque chart later in this section. The
fastener must not rotate (Figure 2-34).
2. If the fastener rotates any amount. remove the fastener
from the component and apply adhesive to the threaded hole.
Follow the procedure for installing old Ori-Loe fasteners.
.MOVAL OF "DRI-LOC"J=ASTENERS
If it is difficult to remove Ori-Loe fasteners from components,
the strength of Ori-Loe; Rockwell adhesive or Loctite 277 can
be decreased by heating. Use the following procedure:
ALWAYS USE
TORQUE WRENCHES
Figure
2-34.
Reinstalllng Fasteners.
1. Heat the fastener for three to five seconds only and try to
loosen the fastener with a wrench. Do not use an impact
wrench to loosen the fastener or hit the fastener with a hammer.
2. Repeat step 1 until the fastener can be removed.
CAUTION: Do notexceed350°F (+1n°C)
maximum. Heating must be done slowly to
prevent thermal stresses in the other com•
ponents.
REPAIRING PARTS
Remove nicks. mars and burrs from parts having machined
· or ground surfaces. Use a fine file, india stone, emery cloth or
crocus cloth for this purpose.
REPAIRING AXLE HOUSING
Certain repairs may be made to the axle housing, by welding
- see below. However, attempted repairs of the housing by
bending or straightening will cause poor or unsafe operation of
the axle and early failure can result
NOTE: Refer to the welding caution In the
introductory pages of this manual before
starting any welding operation.
Following is the vendor-allowed welding procedure which
can be done on the drive axle housing, The vendor, Rockwell
International, will permit repairing drive axle housing assem•
blies by welding ONLY in the following areas:
1. Cover welds.
2. Snorkel welds.
3. Housing seam welds between the suspension attaching
brackets.
CAUTION: Welding can
be
used when the
crack or damaged area Is within the old
weld material. Replace the axle housing If
the crack extends Into the metal next to the
old weld. A housing that has damage in the
seam weld or cover weld because of over-
load conditions can be repaired. A repaired
housing must be used in correct applica-
tions.