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GMC ZE06581 1976 Maintenance Manual Supplement page 60

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POS . CAMBER
POS . CAMBER
VERTICAL
VERTICAL
GROUND
TOE-IN ....... .....
G = F + .06"
CAMBER .. . .. .. ... ..
0 ° TO
+"/2 °
A-4635
Figure 19-Rear Wheel Alignment Chart
If measurement is to be made from center
of tire treads, first hoist vehicle and
spin
wheels to obtain a center line on tire tread .
Roll vehicle ahead several feet to where the
inspection is to be made. This will remove any
slack caused by looseness in wheel bearings.
Measure at point "F" .and "G" .
The toe-in
should follow the relationship : G = F + .06" .
TOE-TN ADJUSTMENT
If toe-in is not correct, it must be shimmed
Figure 20-Rear Wheel Shim Location
REAR SUSPENSION 4- 1 9
TOE SPECIFICATION:
A = B .0625"
LEFT OR RIGHT REAR SUSPENSION
Figure 21-Measuring for Toe at Rear Suspension
as shown in figure 20. Follow this procedure
for adjustment .
1. Raise vehicle off floor.
2. Loosen six bolts on mounting bracket.
3. Insert proper shim as shown in figure 21 .
4. Tighten retaining nuts on frame rail .
Tighten two retaining nuts on crossmember.
See Specifications at the end of this section
for torque values.
5 . Lower vehicle to floor and recheck align-
ment .
If one side of the vehicle rear suspension
appears to be the primary cause of excessive
toe, use the following procedure for measuring
toe on one side of vehicle.
1 . Drive vehicle straight forward onto a
level surface.
2. Remove wheel covers and outer dust cap .
Figure 22-Air Compressor Pressure Switch Adjustment

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