GMC 1976 ZEO 6083 Maintenance Manual page 150

Camber Reading (Checking) . . . .. . . . .. +1-1/4°
Amount To Be Corrected . . . ... . ..... . . ... . ... . 1/2°
1/2 of 1/2°=1/4° Front Cam Bolt
Remaining 1/4° Rear Cam Bolt
4. Tighten front and rear cam nuts (torque to
80-95 ft . lbs.) while holding bolts with back-up
wrench so that camber is not changed. Check caster,
do not reset unless caster exceeds specifications .
Caster
Example:
IMPORTANT : Check cam adjustment surface for
weld splatter . Weld splatter in this area will af-
fect front end alignment . Remove weld spatter if
found .
1 . Loosen front and rear cam nuts while holding
bolts with back-up wrench so that camber is not
changed .
2. Turn front cam bolt so that camber changes
1/4 of the desired amount of caster to be corrected.
Example:
Caster Reading (Checking) . . . ... . .... . ... . . . . . +5o
Amount To Be Corrected . . . . . ... . .... . ... . . . . ... . . 3°
1/4 of 3°=3/4° Front Cam Bolt
3. Turn rear cam bolt so that camber now returns
to corrected setting.
4. Recheck caster setting.
This is a location to start from and a correct
setting can be obtained with the above procedure.
NOTE : Torque upper control arm cam nuts to 90
ft . lbs. Hold head of bolt securely, any move-
ment of the cam will effect the final setting and
caster camber adjustment must be rechecked.
Toe-In Adjustment (Figure 32)
1 . Loosen the clamp bolts at each end of the
FRONT SUSPENSION
3A- 2 1
BOLTS MIST BE INSTALLED IN DIRECTION SHOWN, ROTATE BOTH INNER AND
OUTER TIE ROD HOUSINGS REARWARD TO THE LIMIT OF BALL JOINT TRAVEL
BEFORE TIGHTENING CLAWS .
WITH THIS SAME REARWARD ROTATION ALL
BOLT CENTERLINES MIST BE BETWEEN ANGLES SHOWN AFTER TIGHTENING
CLAWS .
A-0885
Figure 32-Positioning Tie Rod Clamp
steering tie rod adjustable sleeves . Tie rod assembly
must be decreased in length in order to increase toe-
in .
NOTE : Tie rod adjuster components often
become rusted in service. In such cases, it is
recommended that if the torque required to
remove the nut from the bolt (after breakaway)
exceeds 7 ft . lbs ., discard the nuts and bolts.
Apply penetrating oil between the clamp and
tube and rotate the clamps until they move
freely . Install new bolts and nuts to assure
proper clamping at the specified nut torque .
2. With steering wheel set in straight ahead posi-
tion, turn tie rod adjusting sleeves to obtain the
proper toe-in adjustment at curb load .
3. When adjustment has been completed accord-
ing to the recommended specifications, check to see
that the number of threads showing on each end of
sleeve are equal and that the tie rod end housings are
at right angles to steering arm. Position inner and
outer tie rod clamps as shown in Figure 32 . Torque
nuts to 20 ft . lbs.