Pontiac firebird 1968 - Page 157

4B-8 1968 PONTIAC SERVICE MANUAL
washers into cap half of differential case in such a
manner that pinion shaft retaining dowel can be in-
serted through pinion gear shaft into differential
case. This prevents pinion shaft from sliding out
and causing damage to carrier (Fig. 4B-12).
(4 pinion) Place one spring block in central
position over gear face. Assemble the four pinions
and four thrust washers onto the pinion cross shaft
and place in position in the cap half of the differential
case (Fig. 4B-13).
5. (2 pinion) Insert six springs into spring block
that is already installed into case, then place second
spring block over springs. Note offset construction
of spring block tabs (Fig. 4B-14).
(4 pinion) Insert three springs through center of
pinion cross shaft onto spring block that is already
installed into case, then place second spring block on
top of springs (Fig. 4B-15).
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.
4B-16).
9. Install other axle shaft through flange half of
differential 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).
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
PRELOAD.
SPRINGS
SPRING
BLOCK
Fig. 4B-14 Installing Second Spring Block - Two Pinion
Tempest and Firebird
—. SPRING BLOCK
. PRELOAD SPRINGS
SPRING BLOCK
PINION CROSS SHAFT
PINION '
GEARS^r^- / 'j* I ^ "K,
_ _ JBT
SPRING ^ 1 J W \
BLOCK ^
SIDE
GEAR*
PINION
^ GEARS
DIFFERENTIAL CASE (CAP HALF)
Fig. 4B-13 Instal ling Parts in Cap Ha If - Four PinT
Tempest and Firebird
ion
Fig. 4B-15 Installing Second Spring Block - Four Pinion
Tempest and Firebird
Fig. 4B-16 Installing Flange Half of Differential Case
Two or Four Pinion Tempest and Firebird