Chevrolet 1988 Light Duty Truck Repair Manual page 159

A. Dial in d ica to r and arbor p o sitio n e d on the gage block.
B. M easurem ent after the arbor is moved o ff o f the gage b lo ck
T ig h te n
• The nut until the pinion end play is just taken
up. Rotate the pinion while tightening the nut
to seat the bearings. Once there is no end play
in the pinion, the preload torque should be
rechecked.
• R em ove J 8614-01. U sin g an in c h -p o u n d
torque wrench, check the pinion preload by
rotating the pinion with the wrench. Preload
should be at or below 2.3 to 2.8 N m (20 to 25
in. lbs.) on new bearings, or 1.1 to 1.7 N m (10
to 15 in. lbs.) for used bearings (figure 16).
• If the preload torque is below the preloads
given above, continue torquing the nut in small
increm ents. C heck the preload after each
J-22388
A. Pinion Oil Seal
Figure 14— Installing the Pinion Oil Seal
Figure 13— Checking Pinion Depth
8. Differential case. Refer to " Backlash A d ju stm en t" in
this section.
F-04702
/ -INCH RING GEAR 4B2-7
8 1 2
tig h te n in g . Each tig h te n in g in cre ase s the
bearing preload by several pounds. If the
bearing preload is exceeded, the pinion will
have to be removed, and a new collapsible
spacer installed.
• Once the preload has been obtained, rotate
the pinion several tim es to assure that the
bearings have seated. Recheck the preload,
and adjust if necessary.
Figure 15— Installing the Pinion Flange
F-04682
F-04694