GMC 1986 P-Truck Service Manual page 243

3B4-4 STEERING COLUMN
DIAGNOSIS OF THE STEERING COLUMN (CONT.)
PROBLEM
High Shift Effort
Improper
Transmission Shifter
Lash In Mounted
Column Assembly
Driver Can Lock
Steering In The
Second Gear (Manual
Transmission
Columns)
Excessive Play In
The Mounted
Steering Column
Assembly (Tilt
Column)
Housing Loose (Tilt
Column)
Housing Scraping
On The Bowl (Tilt
Column)
POSSIBLE CAUSE
1. Column assembly is misaligned in the
vehicle.
2. Lower bowl bearing is not aligned cor­
rectly.
3. Lack of grease on the bearing or seal
areas.
4. Shift tube is bent or broken.
1. Sheared shift tube joint.
2. Improper transmission linkage adjust­
ment.
3. Loose lower shift lever.
4. Sheared lower shift lever weld.
1. Column mounting bracket bolts loose.
2. Broken weld nuts on the jacket.
3. Column bracket capsule sheared.
4. Loose shoes in the housing (tilt only).
5. Loose tilt head pivot pins (tilt only).
1. Faulty upper shift lever.
2. Faulty shift lever gate.
3. Loose relay lever on the shift tube.
1. Column mounting bracket bolts loose.
2. Loose support screws.
3. Loose tilt head pivot pins.
4. Loose lock shoe pin in the support.
1. Excessive clearance between the
holes in the support or the housing
and pivot pin diameter.
2. Faulty anti-lash spring in the cent 'ring
spheres.
3. Upper bearing not seating in the bear­
ing race.
4. Upper bearing inner race seat miss­
ing.
5. Bearing preload spring broken.
6. Loose support screws.
Bowl bent or not concentric with the
hub.
CORRECTION
1. Align correctly.
2. Align correctly.
3. Lubricate bearings and seals.
4. Replace the shift tubes.
1. Replace the shift tube assembly.
2. Adjust the linkage.
3. Replace the shift tube assembly.
4. Replace the shift tube assembly.
1. Tighten to specifications.
2. Replace the jacket assembly.
3. Replace the bracket assembly.
4. Replace the shoes.
5. Replace the pivot pins.
1. Replace the shift lever.
2. Replace the shift lever gate.
3. Replace the shift tube assembly.
1. Tighten to specifications.
2. Tighten to specifications.
3. Replace the pivot pins.
4. Replace the pin.
1. Replace either or both.
2. Replace the spring.
3. Replace both.
4. Install the seat.
5. Replace preload spring.
6. Tighten to specifications.
Replace the bowl.