Chevrolet Light Duty Truck 1973 Service Manual page 193

Installation
See CAUTION on page 1 of this
CAUTION:
section regarding the fasteners referred to steps
3 and 4.
1. Properly position spring on the control arm, and lift
control arm using jack and tool J-23028.
2. Position control arm cross-shaft to crossmember
and install "U " bolts and attaching nuts. Make
certain front indexing hole in cross-shaft is lined up
with crossmember attaching saddle stud.
3. Torque nut to specifications.
4. Install shock absorber to lower control arm and
install stabilizer bar.
5. Remove tool J-23028 and safety chain.
. Lower vehicle to floor.
6
LEAF SPRING AND BUSHINGS K SERIES
Removal
1. Raise vehicle on hoist.
2. Place adjustable lifting device under axle.
3. Position axle so that all tension is relieved from
spring.
4. Remove shackle upper retaining bolt.
5. Remove front spring eye bolt.
. Remove spring-to-axle u-bolt nuts and remove
6
spring, lower plate and spring pads.
7. Remove shackle to spring bolt and remove bushings
and shackle.
Bushing Replacement
1. Place spring on press and press out bushing using a
suitable rod, pipe, or tool.
2. Press in new bushing; assure that tool presses on
steel outer shell of bushing. Install until bushing
protrudes an equal amount on each side of spring.
Spring Inserts (Liners) or Leaf Replacement
1. Place spring in vise and remove clips.
2. Remove center bolt. Open vise slowly, allowing
spring to expand.
3. Wire brush, clean, and inspect for broken leaves.
4. Replace leaf or liners.
Installation
See CA UTION note on page one of
CAUTION:
this section regarding the fasteners referred to
in steps 5 and 6.
1. Install spring shackle bushings into spring and
attach shackle. Do not tighten bolt.
2. Position spring upper cushion on spring.
3. Insert front of spring into frame and install bolt.
Do not tighten.
FRONT S U S PEN SIO N
Fig. 28—Leaf Spring Assembly K-Series
4. Install shackle bushings into frame and attach rear
shackle. Do not tighten bolt.
5. Install lower spring pad and spring retainer plate.
Torque bolts to specifications.
. Torque front and rear spring eye and shackle bolts
6
to specifications.
7. Remove stands and lower vehicle to floor.
UPPER CONTROL ARM INNER PIVOT
SHAFT
AND/OR BUSHING REPLACEMENT
C20-30, G30 and P10-30 (Steel Bushings)
Pivot Shaft Removal
1. Raise vehicle and remove tire and wheel assembly.
2. Support the lower control arm with a floor jack.
NOTE: Position jack under the ball joint
assembly or as near as possible and still have
good support.
3. Loosen the upper control arm shaft end nuts before
loosening the shaft to frame attaching nuts.
4. Loosen the shaft to frame nuts and remove the
caster and camber shims.
NOTE: Tape the shims together as they are
removed and mark for position.
5. Remove the pivot shaft to frame nuts but do not
allow the arm to swing too far away from the
frame.
NOTE: Use a safety chain to retain the arm
in a close relationship to the frame.
. Remove the shaft end nuts and remove shaft from
6
arm.
3 -1 9
LIGHT DUTY TRUCK SERVICE MANUAL