Chevrolet Light Duty Truck 1973, Service Manual

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STEER IN G 9 -7 5
IG N IT IO N SYSTEM
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E L E C T R IC A L S Y S T E M
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W IL L N O T F U N C T IO N (C O N T 'D .)
Cause Solution
D. Defective ignition switch.
E. Ignition switch not adjusted properly.
D. Replace ignition switch.
E. Readjust ignition switch.
SW ITCH W IL L N O T A C T U A T E M E C H A N IC A L L Y
Cause
Solution
A. Defective ignition switch. A. Replace igntion switch.
SW ITCH CAN N O T BE SET C O R R E C T L Y
Cause
Solution
A. Switch actuator rod deformed.
B. Sector to rack engaged in wrong tooth (tilt-tilt and
telescope).
A. Repair or replace switch actuator rod.
B. Engage sector to rack correctly.
NO ISE IN C O L U M N
Cause
Solution
A. Coupling bolts loose.
B. Column not correctly aligned.
C. Coupling pulled apart.
D. Sheared intermediate shaft plastic joint.
E. Horn contact ring not lubricated.
F. Lack of grease on bearings or bearing surfaces.
G. Lower shaft bearing tight or frozen.
H. Upper shaft tight or frozen.
I. Shaft lock plate cover loose.
J. Lock plate snap ring not seated.
K. Defective buzzer dog cam on lock cylinder.
L. One click when in “off-lock” position and the steering
wheel is moved.
A. Tighten pinch bolts to specified torque.
B. Realign column.
C. Replace coupling and realign column.
D. Replace or repair steering shaft and realign column.
E. Lubricate with lubriplate.
F. Lubricate bearings.
G. Replace bearing. Check shaft and replace if scored.
H. Replace housing assembly.
I. Tighten three screws or, if missing, replace.
CAUTION: Use specified screws. (15 in. lbs.)
J. Replace snap ring. Check for proper seating in groove.
K. Replace lock cylinder.
L. Normal condition - lock bolt is seating.
Fig. 112—Automatic Transmission Column Diagnosis
LIGHT DUTY TRUCK SERVICE MANUAL