Pontiac FIREBIRD 1972 Service Manual page 353

NON TYPE C DIFFERENTIAL 4A-29
When backlash is adjusted to specifications, tighten
bearing cap bolts to 70 lb. ft. torque.
I f readjusting the backlash does not give the
correct tooth contact pattern, the pinion depth
must be readjusted.
Check tooth contact pattern with red lead test as
specified in this section.
7. When correct tooth contact pattern is obtained, in-
stall cover with new gasket on housing. DO NOT
USE GREASE TO RETAIN GASKET. Insert two
upper cover bolts carefully through cover and gasket.
Be sure gasket is flat and not twisted between cover
and housing. Be sure all cover bolts pass through
gasket holes. Torque to 25 lb. ft.
NOTE: It may be necessary to readjust the
backlash to obtain the correct tooth contact
pattern. On high mileage gear sets where a defi-
nite wear pattern has been established, it may
be necessary to exceed ,009'' backlash to obtain
the desired tooth contact. It is important, how-
ever, not to exceed .009" backlash on new gear
sets.
F AND X SERIES AXLE USAGE CHART
M A N U F A C T U R E R ' S
T Y P E
b
T Y P E
-
"C"
T Y P E
-
-
X
R A T l C
A V A I L
A B I L I T Y
-
3 08'
V E H I C L E
S E R I E S
T R A N S E N G I N E
3 Spd Man
3 Svrl Man
4 Spd M a n
-
- -
M40
3 Spd Man 400
4 Bbl
4 Sod Man
455
4 Bbl
- -
3 Spd Man
4 Spd Man
3 Spd M a n
350 2 Bbl.
307
2
Bbl
3 Spd M a n
Standard A x l e Ratlo
b U m t T y p e A x l e Shaff Beanng
"
Direct
O n T y p e A x l e s h a f t Bearing
Fig.
F and X Series Axle Usage Chart