Spicer Drive Axles Service Manual - Manual (Page 14)

12
PINION ASSEMBLY
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To measure preload with spring scale, clamp the end
yoke horizontally in a soft-jawed vise. Attach one end of
cord to a bolt hole in the pinion bearing cage and attach
the other end of the cord to the spring scale. Rotate
pinion cage and attach the other end of cord to the
spring scale. Rotate pinion bearing cage by pulling scale.
Read scale during fourth revolution. Scale reading must
be between 3-9 lbs.
See Figure 9.
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12. Measure torque-to-rotate with an inch-pound torque
wrench. Torque measurementsshould be taken every
fourth revolution and should read between 10-30
in-lbs of bearing preload.
See Figure 10.
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" change in preload spacer thickness will change
torque-to-rotate approximately 30 in-lbs.
NOTE: Individual carriers may vary slightly.
Pinion bearing preload spacers are available in several
thicknesses. Refer to service parts booklet for kits of
commonly used preload spacers.
Always measure each spacer before assembly to ensure
correct thickness.
NOTE: Closer adjustment can be made by sanding
the next thicker spacer to desired thickness using
emery cloth on a flat surface.
CAUTION: Wash spacer thoroughly of emery
cuttings before installing on pinion.
NOTE: Spicer recommends that new torque prevail-
ing nuts be used.
13. Apply Loctite #680(green) to threads.
14. Install new pinion oil seal. Apply a small amount of
light greas e to the seal lip. Prior to installing yoke.
15. Use torque multiplier and torque flanged hex nut to
700-900 Lb-Ft (950-1,220 N-m).
Pinion Assembly Complete
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Yoke Installation Tool
DST 1009