Pontiac FIREBIRD 1972 Service Manual page 366

4B-10 1972 PONTIAC SERVICE MANUAL
Fig
7.
8.
9.
10.
11.
.
48-16 Installing Flange Half of Differential Case
-
Two
or Four Pinion
Place shim, if provided, and remaining cone over side
gear.
Install flange half of differential case over cone, in
proper position to match alignment marks; insert two
case half bolts finger tight, 180" apart (Fig. 4B- 16).
Install other axle shaft through flange half of differ-
ential case, rotating axle to enter cone splines and
then side gear splines. Leaving the axle shaft in this
position, insert remaining bolts and tighten to 30 lb.
ft. (Fig. 4B-17).
Remove axle shafts (A slight tapping on the shafts
with a soft hammer may be necessary to align the
splines during assembly. The shafts can then be
readily reinstalled without spline interference during
final assembly).
If side bearings were removed, lubricate outer bear-
Fig. 48-1
7
Torquing Case Half Bolts
-
Two or Four Pinion
ing surfaces and press on bearings as described in
Section 4-A.
12. After making sure that matching surfaces are clean
and free of burrs, position ring gear on case so holes
are in line.
13. Lubricate attaching bolts with clean engine oil and
install.
CAUTION: Do not use hammer to force ring
gear on case. Ring gear to case bolts have left-
hand threads.
14. Pull ring gear onto case by alternately tightening
bolts around case. When all bolts are snug, tighten
bolts evenly and alternately across diameter to 90 lb.
ft. torque.
15. Install unit into axle carrier following instructions
given for Standard Differential.
SPECIFICATIONS
REAR AXLE
Type
..................................................
Semi-Floating
Type of Drive
..............................
Modified Hotchkiss
Drive-Final
............................................
Hypoid Gear
Lubricant Capacity
P-M Coded Axles
................
88 fl. oz. or 5 1/2 Pints
B, 0 , G and
K
Coded Axles 68 fl. oz. or 4 1/4 Pints
W Coded Axles
........................
75 fl. oz. or 4.4 Pints
Lubricant
..
G M Part Number 105 1022 or equivalent
Lubricant Level
Bottom of Filler Plug Hole for A and G Series.
B Series
-
P.M. Coded Axles
-
Bottom of Filler Plug
to 3/4" below
B, G , K and 0 Coded Axles Flush to 3/8" Below
Filler Plug.
RING GEAR A N D P I N I O N
Backlash
.....................................................
.005"-.009"
Ring gear run-out maximum
..............................
.002"
Ratios
...............................................
See Ratio Chart
Pinion Bearing Preload (with Ring Gear)
New Bearings (New Seal)
..........................
25 lb. in.
Old Bearings (New Seal)
..........................
17 lb. in.
Side Bearing Preload
....................
Slip Fit Plus .008"