Chevrolet 10 1971 Series Chassis Service Manual page 134

REAR SUSPENSION AN D DRIVE LINE 4-14
torque required to keep the pinion turning (fig. 23).
If flange is to be reused, mark pinion and flange for
reassembly in the same relative position.
5. Install Tool J-8614-1 on pinion flange and remove
pinion flange nut (fig. 24). (Position J-8614-1 on
flange so that the four notches are toward flange.)
Discard nut and use a new one upon reassembly.
6. Thread pilot end of Tool J-8614-3 into small O.D.
end of J-8614-2. Then with J-8614-1 installed as in
Step 4, insert J-8614-2 into J-8614-1 and turn it 45
degrees to locked position. Remove flange by turn­
ing J-8614-3 while holding J-8614-1 (fig. 25).
7„ Pry old seal out of bore, using a screw driver or a
hammer and chisel.
8. Inspect pinion flange for smooth oil seal surface
worn drive splines, damaged ears, and for smooth­
ness of b e a r i n g
necessary.
9. If deflector requires replacement, remove by tapping
from flange, clean up stake points; install new de­
flector, and stake deflector at three new equally
spaced positions.
NOTE: Staking operation must be performed in
such a manner that the seal operating surface is
not damaged.
10. Pack the cavity between the seal lips of the pinion
flange oil seal with a lithium-base extreme pressure
lubricant, position seal in bore and place gauge plate
J-22804-2 (light-duty axle) or J-22804-1 (heavy-duty
axle) over seal and against seal flange. Gauge plate
insures proper seating of seal in carrier bore.
11. Using Tools J-21468 and J-9458 for light-duty axle
(fig. 26) and Tool J-21057 for heavy-duty axle (fig.
27) press and seal into carrier bore until gauge plate
is flush with the carrier shoulder and seal flange.
Turn gauge plate 180° from installed position; seal
must be square in carrier bore to seal properly
against pinion flange.
12. Position and align pinion flange on pinion shaft using
Tools J-9458 and J-8614-1.
threaded onto pinion shaft and nut tightened against
J-9458-2 to pull flange on shaft (fig. 28). Remove
J-9458 after flange is seated.
Fig. 25— D rive Pinion Flange Removal
contact surface. Replace if
Tool J-9458-1 is
J-22804-2
X
J-9458
Fig. 26— Drive Pinion Flange O il Seal Installation
(Light Duty)
NOTE: The position of the pinion and flange
was previously marked so that reinstallation
may be made with flange and pinion in same
relative position.
CAUTION: Do not attempt to hammer flange
onto pinion shaft. To do so will damage ring
gear and pinion.
13. Pack the cavity between end of pinion splines and
pinion flange with a non-hardening sealer (such as
Permatex Type A or equivalent) prior to installing
nut on pinion.
14. Install a new nut on pinion shaft. Tighten nut to
remove end play and continue alternately tightening
in small increments and checking preload with torque
wrench until it is the same as that recorded in
Step 4.
15. Reinstall propeller shaft to companion flange in
same position as marked in Step 3. Reinstall rear
brake drums and wheels.
NOTE: This propeller shaft to pinion flange
fastener is an important attaching part in that
Fig. 27— Drive Pinion Flange O il Seal Installation
(Heavy Duty)
I
10-30 CHEVROLET TRUCK SERVICE MANUAL