Pontiac firebird 1968 - Page 126

STANDARD DIFFERENTIAL
4A-3
29 30 31 32 33 34 35
1.
Spacer
14.
Differential Side Bearing Cap 27. Axle Shaft Oil Seal
2.
Differential Side Bearing Shim 15.
Cap Bolt
28.
Carrier & Tubes Assy.
(Service)
16.
Pinion Shaft Lock Bolt
29. Outer Retainer
3.
Side Bearing Shim
17.
Washer 30.
Outer Retainer Gasket
(Production)
18.
Pinion Gear Thrust 31. Nut
4. Side Bearing Race
Washer
32.
Axle Shaft Bearing
5.
Differential Side Bearing
19.
Differential Pinion Gear
33.
Brake Assy, to Housing Bolt
6.
Ring Gear to Differential Case Bolt
20.
Differential Pinion Shaft
34. Inner Retainer
7. Differential Case
21.
Differential Side Gear
35.
Axle Shaft
8. Rear Pinion Bearing Outer Race
22.
Side Gear Thrust
36.
Front Pinion Bearing Outer Race
9.
Bearing Spacer
Washer
37.
Front Pinion Bearing
10. Drive Pinion Bearing
23.
Cover Gasket
38.
Pinion OiI Seal
11.
Bearing Shim 24. Cover
39.
Companion Flange
12. Drive Pinion Gear
25.
Cover Bolt
40.
Washer
13.
Ring Gear
26.
Inner Retainer Gasket
41.
Pinion Nut
Fig. 4A-3 Exploded View of Typical Differential Assembly
bearing rollers when joint is disconnected if tie wire
has been removed (Fig. 4A-5).
3. Attach a 1/2" drive adapter and socket to a
lb. in. torque wrench. Place socket over drive pinion
nut and turn pinion two or three revolutions to ensure
free movement. Then take a torque reading while
rotating pinion to measure bearing preload (Fig.
4A-6). Record reading.
NOTE: Additional clearance to check preload can
be obtained between differential and body by rais-
ing body a few inches by means of a jack or stand
placed under frame at rear.
4. Hold companion flange with tool J 8614-1 (Fig.
4A-7) and remove drive pinion nut and washer using
heavy duty socket.
5. Remove companion flange, using puller J 8614-2
and 3 (Fig. 4A-8).
6. Install new companion flange and washer and
nut. Hold companion flange with tool J 8614-1 and
tighten nut only a little at a time, stopping frequently
to check preload (step 3). Tighten nut to reading
noted in step 3| however, if reading obtained in step
3 was less than 12 lb. in., increase preload to 16
lb. in.