Pinion assembly – Spicer Tandem Drive Axles Service Manual S400 User Manual
Page 19
PINION ASSEMBLY
5. Place carrier housing in press with the pinion
supported by wood block (6"X6"X6"), so the inner
pinion bearing is mated to the cup.
See Figure 15.
6. Insert original preload spacer and outer pinion
bearing onto pinion.
7. Press outer pinion bearing onto pinion until
completely seated.
8. On forward rear, press driven gear onto pinion.
See Figure 16.
IMPORTANT: The old style driven gear on the 3.21
and 3.42 ratios will have FRONT stamped on the
face of the gear. This gear must be installed with the
word FRONT facing away from the carrier assembly.
If you do not have this driven gear no special instruc-
tions apply to the installation of the gear.
9. On rear rear carrier, inspect end yoke or companion
flange, for grooves in seal surface. If grooves can be
Press
Driven Gear
detected with finger-nail, then end yoke must be
repaired with a C/R approved repair sleeve or
replaced.
10. Use yoke installer service tool and install yoke
without seal.
See Figure 17.
11. Use torque multiplier and torque flanged hex nut to
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6
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6
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17
900-1,200 Lb-Ft (1,220-1,627 N-m).
12. Install pinion pilot bearing cap. Tighten and torque
four bolts to 150 Lb-Ft (203 N-m).
13. Measure torque to rotate with an inch-pound torque
wrench. Make eight revolutions, taking a torque
measurement every fourth revolution. It should read
between 10-40 lb-in of bearing preload.
See Figure
18.
NOTE: If bearing preload does not fall within allowed
limits, preload can be increased by using a thinner
spacer and decreased by using a thicker spacer.
.001 inch change in preload spacer will change torque to
rotate approximately 30 lb-in.
Yoke Installer
Service Tool