GMC 1976 ZEO 6083 Maintenance Manual page 578

9- 46 STEERING
STEERING COLUMN TROUBLE DIAGNOSIS (Cont'd.)
SIGNAL SWITCH DIAGNOSIS
Condition
Possible Cause
Correction
Steering wheel fails
A. Pivot pins are bound up .
A
. Replace pivot pins .
to return to top tilt
position .
B . Wheel tilt spring is
B. Replace tilt spring .
defective.
C. Turn signal switch C. Readjust .
wires too tight.
Noise when tilting
A. Upper tilt bumpers
A. Replace tilt bumper .
column .
worn .
B. Tilt spring rubbing in B. Lubricate.
housing.
Condition
Possible Cause Correction
Turn signal will not
A. Loose switch mounting
A. Tighten to specified torque
cancel .
screws .
(25 in .-lbs.) .
B. Switch or anchor
B. Replace switch .
bosses broken .
C. Broken, missing or out
C. Reposition or replace springs as
of position detent, return
required .
or cancelling spring .
D. Uneven or incorrect
D. Adjust switch position .
cancelling cam to cancel- 1 . If interference is correct
ling spring interference . and switch will still not cancel,
( .120)/side.
replace switch .
2. If interference cannot be cor-
rected by switch adjustment, re-
place cancelling cam .
Turn signal difficult A. Actuator rod loose.
A. Tighten mounting screw
to operate .
-
(12 in .-lb .) .
B. Yoke broken or
B. Replace switch .
distorted.
C. Loose or misplaced
C. Reposition or replace springs.
D. Foreign parts and/or
D. Remove foreign parts and/or
materials.
material .
E. Switch mounted loosely .
E. Tighten mounting screws
(25 in .-lbs.) .