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DIFFERENTIAL
4B-17
5-21777-1 OR
DIAL INDICATOR
5-23597-1
(5-8001
)
Fig. 48-33 Pinion Gage Tools - Step 2
(Fig. 4B-35).
Fig. 48-35 Installing Rear Pinion Bearing
INSTALL PINION ASSEMBLY AND
ADJUST PINION PRELOAD
1. Position pinion assembly in carrier and install
collapsible spacer.
2. Place front pinion bearing in position on pinion. Hold
pinion fully forward and drive bearing over pinion until
seated. Use Installer J 22388.
3. On 8 1/2" or 8 3/4" ring gear axles install pinion oil
seal using Installer J 22388 (Fig. 4B-36). A correctly installed
pinion seal having a flanged case should be flush with nose
of carrier casting.
Fig. 48-34 Pinion Marking All Axles
Fig. 48-36 Installing Pinion Oil Seal on 8 1/2" and 8 3,
4 " Axles
1) If reusing production pinion and pinion is marked
"+"
(plus) correct shim will have a thickness equal to gage
reading, plus the amount specified on pinion.
2) If production pinion is marked
"-"
(minus), correct
shim will have a thickness equal to gage reading, less the
amount specified on pinion.
3) If using production or service pinion which has no
marking, the correct shim will have a thickness equal to the
gage reading.
9. Remove pinion gage assembly and both pinion
bearings from case.
10. Position correct shim on pinion shaft and install rear
pinion bearing. Use Installer J 21022-02 on 6 1/2" and 7-1/2"
ring gear axles, or J 8609 on 8-1/2" and 8-3/4" ring gear axles
On 6 1/2" and 7 1/2" ring gear axles, install pinion oil
seal seal by placing spacer J 22804-2 over seal and against seal
flange. The spacer insures proper seating of seal in carrier
bore. Using Installer J 2391 1, press seal into carrier shoulder
and seal flange. Turn spacer 180 degrees from installed
position; seal must be square in carrier bore.
4. Coat lips of pinion oil seal and seal surface of pinion
flange with gear lube. Install pinion flange on pinion by
tapping with a soft hammer until a few pinion threads project
through flange.
5. Coat pinion flange splines with silastic and install
pinion washer and nut. Hold pinion flange with Holder J
8614-10. While intermittently rotating pinion to seat
bearings, tighten pinion nut until end play begins to be taken
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