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pinions. For the 10 tooth, 4.1:1 ratio pinion
this measurement should be 2.250". These
measurements apply to correctly adjusted pin-
ions carrying zero "0" markings. With a pin-
ion marked +2 the reading should be .003"
greater.
17. If the micrometer reading shows the pinion
setting is incorrect by more than .002" plus or
minus from the given figures, shims equal to
that difference must either be added to or
removed from the shim pack between the rear
bearing cup and housing.
When changing shim packs, it is advisable to
check each shim separately t o avoid unnecessary
removing an d installing of pinion and depth gauge.
18. When the correct pinion setting is accom-
plished, install the pinion front bearing shims
on shaft and install the front pinion bearing
cone and rollers.
19. Install companion flange washer and nut, hold-
ing flange with J-2637 holding tool. Tighten
pinion nut to 180-200 ft. lbs.
20. Use a spring scale on the J-2637 holding tool
and check torque required to turn pinion. The
turning torque should b e from 10 to 20 inch
pounds. If the reading varies more or less, it
will be necessary t o add or remove shims
from the front bearing shim pack. The shims
are available in .003", .005", .010" and .030".
21. When the proper pre-load is set, remove the
pinion nut, washer and companion flange.
22. Install the oil slinger, and install a new gasket
in counterbore at front of housing.
Install new oil seal with rear face against
gasket using Oil Seal Installer J-5366.
23. Reinstall companion flange, washer and
nut,torque to 180-200 ft. lbs.
24. Inspect differential side bearing cones and
cups a s well as bearing bores in housing to be
sure all are free of dirt and grit. Place cups on
cone and rollers and lubricate thoroughly.
Install differential assembly in housing.
25. Replace bearing caps in their proper position
according to markings an d tighten bolts fin-
ger tight.
26. Insert two screwdrivers between bearing cup
and housing on the side opposite the drive gear
and move the differential assembly and drive
gear away from the pinion until the opposite
bearing cup is firmly seated against housing.
Move the screwdrivers to the drive gear side
and force the differential assembly and drive
gear over until drive gear teeth contact the
pinion teeth.
27. From shim requirements shown by indicator
reading (Paragraph 8, page 112 shims between
bearing cups and housing Figure 17, dividing
total amount of shims between sides to elimi-
nate all backlash.
FIGURE 17
28. Remove bearing caps and take out differential as-
sembly and drive gear, keeping each shim pack
separate. Use bearing puller J-2241-A, with J-
2241-10 adapter, remove the bearing cones from
differential case and install the shim packs on their
respective hubs. Install an additional 015" thick-
ness of shims behind the differential bearing on the
tooth side of the drive gear to provide the proper
backlash between the gear and pinion and also
provide the proper bearing pre-load. In s tall bear-
ings using Installer J-5364. Lubricate thoroughly.
29. Place axle housing spreader J-5372 in position,
mount the dial indicator and spread housing .020"
as shown in Figure 5 to permit installation of the
differential assembly.
REAR AXLE 114
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