X Series - Pontiac FIREBIRD 1972 Service Manual

4-18 1972 PONTIAC SERVICE M A N U A L
6. Loosen upper and lower spring shackle pin nuts.
7. Loosen spring front eye bolt (Fig. 4-19, View F; Fig.
4-10, View B; or Fig. 4-23).
8. B Series: Remove spring front eye bolt and carefully
let spring swing down.
F & X Series: Remove screws securing the spring
front mounting bracket to the floor pan and carefully
let spring swing down.
9. F & X Series: Remove front mounting bracket from
spring.
10. Support spring; then remove lower shackle pin from
spring. Separate shackle and withdraw spring from
vehicle.
INSTALL
CAUTION:
See
CA
UTION on page I o f this
Section regarding the fasteners referred to in
steps 1,
2,
3 and 8.
1. F &
X Series: Position spring front mounting bracket
to spring front eye and loosely install spring eye bolt
and nut.
CAUTION: Do not tkhten spring eye bolt nut
until weight of car is on springs.
2. B Series: Raise front end of spring and loosely install
spring eye bolt and nut.
CA UTI 0 N: Do not tighten spring eye bolt nut
until weight of car is on springs. Position park-
ing brake cable on top side of spring.
3. Install sleeves (B Series) and bushing halves in spring
rear eye, place spring to shackles and loosely install
lower shackle pin and nut.
CAUTION: Do not tighten shackle pin nuts un-
til weight of car is on springs.
F & X Series: Raise front end of spring and position
mounting bracket to floor pan.
CAUTION: Be sure tab on spring mounting
bracket is indexed in slot provided in the floor
pan. Position parking brake cable on top side of
spring.
4. F & X Series: Install spring front mounting bracket
attaching screws and tighten to 25 lb. ft. torque.
5. Place upper spring cushion pad on spring so cushion
is indexed on spring center locating bolt head.
6. Lower axle housing onto spring.
CAUTION: Index rib o f upper spring cushion
pad into groove of spring mounting bracket on
axle housing.
7. Place lower spring cushion pad in spring and shock
absorber anchor plate with dimple on cushion in-
dexed in hole of plate.
8. Position spring and shock absorber anchor plate to
spring with nut of spring center locating bolt indexed
in dimple of lower spring cushion pad. Tighten an-
chor plate attaching nuts to 40 Ib. ft. torque.
9. Install shock absorber lower end stud in spring and
shock absorber anchor plate. Tighten shock absorber
lower end stud nut to 65 lb. ft. torque on B Series or
t o 10 lb. ft. torque on
F
Series or 55 lb. ft. torque on
X Series.
CAUTION: Make sure all grommets and retain-
ers are correctly installed (F Series). Shock ab-
sorber stud must not rotate while tightening
nut.
10. Raise car so weight of car is on springs.
11. Tighten spring front eye bolt nut to 75 lb. ft. torque
and shackle pin nuts to 95 Ib. ft, torque on B Series
or to 50 Ib. ft. torque on F &
X
Series.
Fig. 4-23 Installation of Rear Spring on X Series
12. Remove jack stands and lower car.