Pontiac FIREBIRD 1972 Service Manual page 390

- - - --
-
TYPE C SAFE-T-TRACK DIFFERENTIAL
Fig. 4D-13 Installing Second Spring Block
6.
Install second side gear, face down on spring block so
that side gear will mesh with pinion gears.
7. Place shim, if provided, and remaining cone over side
gear.
8. 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. 4D-14).
9. 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. 4D-15).
10. 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).
11. If side bearings are removed, lubricate outer bearing
surfaces and press on bearings as described in Section
4A.
Fig. 4D-14 Installing Flange Half o f Differential Case
Fig. 4D-15 T o r q u i n g Case Half Bolts
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.
FLUSHING PROCEDURE
Lubricant contamination will result in chatter. The fol-
lowing procedure is established for flushing this differen-
tial in the event the wrong lubricant is accidentally added.
1. Drain original lubricant from differential housing.
2. Fill axle with a light, non-detergent engine oil.
3. Raise both rear wheels off floor.
CAUTION: Use care not to crush exhaust sys-
tem "kick-underWp1pe on B Series station wag-
ons when using an axle engaging hoist.
4: With car properly supported, run car in "Drive"
range for three to four minutes. Do not exceed 30
MPH on speedometer or accelerate or decelerate rap-
idly.
5. Remove oil from axle.