Tilt Steering Column Unit Repair (C, K And G M O D E Ls) - GMC 1986 P-Truck Service Manual

3B4-28 STEERING COLUMN
TILT STEERING COLUMN UNIT REPAIR
Remove or Disconnect
Steering column assembly. Refer to " CK or G
Model Steering Column Replacement" in this
section.
*
Disassemble (Figures 29 through 36)
Tools Required:
J-22635 Lock Shoe and Release Lever Pin
Remover and Installer
J-23074 Steering Column Holding Fixture
J-21854-01 Pivot Pin Remover
J-23072 Shift Tube Remover
1. Dash panel bracket and screws from the column.
• Install J-23074 onto the steering column and
place the tool in a bench vise.
Im portant
• Clamping the steering column directly in a
vise, could result in a damaged column.
2. Turn signal switch. Refer to " Turn Signal Switch
Replacement" in this section.
3. Lock cylinder. Refer to " Lock Cylinder Replace­
ment" in this section.
4. Tone alarm switch, if it needs to be serviced. Re­
fer to " Tone Alarm Switch Replacement" in this
section.
Important
• The tone alarm switch does not have to be
removed to remove the upper bearing hous­
ing.
5. Ignition switch. Refer to " Ignition Switch Replace­
ment" in this section.
6. Tilt release lever.
7. Shift lever pivot pin and lever.
8. Housing cover screws and housing cover.
• Install the tilt release lever and place the column
in the " up" position.
9. Tilt lever spring retainer, spring and guide. Use a
screwdriver to turn the retainer until it aligns with
the grooves in the housing then remove the re­
tainer.
10. Pot joint to steering shaft clamp bolt and remove
the intermediate shaft and pot joint assembly (CK
Model).
11. Upper bearing inner race and seat. Push the up­
per steering shaft in enough to remove the race
and seat.
12. Lower bearing retainer clip.
(C, K AND G MODELS)
13. Bearing reinforcement, bearing and bearing
adapter assembly from the lower end of the mast
jacket.
14. Upper bearing housing pivot pins. Use J-21854-01
(figure 33).
• Install the tilt release lever and disengage the
lock shoes.
15. Bearing housing by pulling upward to extend the
rack full down, and then moving the housing to
the left to disengage the ignition switch rack from
the actuator rod.
16. Steering shaft assembly from the upper end of
the column.
17. Steering shaft by removing the centering spheres
and the anti-lash spring.
18. Transmission indicator wire, if so equipped.
19. Bearing housing support to gearshift housing
screws and remove the bearing housing support.
20. Ignition switch actuator rod.
21. Shift tube retaining ring and washer.
NOTICE: When removing the shift tube, be
sure to guide the lower end through the slot­
ted opening in the mast jacket. If the tube is
allowed to interfere with the jacket in any way,
damage to the tube and jacket could result.
• Install J-23072 into the lock plate, making sure
that the tool screws have good thread engage­
ment in the lock plate. Then, turning the center
screw clockwise, force the shift tube from the
housing (Figure 34). Remove the shift tube (trans­
mission control lock tube on floor shift models)
from the lower end of the mast jacket. Remove J-
23072.
22. Lock plate and washer.
• Slide the lock plate out of the jacket notches
by tipping it down toward the housing hub
and sliding it under the jacket opening.
23. Shift lever housing from the mast jacket.
(Transmission control lock tube housing on
floor shift models).
• Disassemble the bearing housing as fol­
lows:
24. Tilt lever opening shield.
25. Lock bolt spring. Remove the retaining
screws and move the spring clockwise to re­
move it from the bolt (figure 35).
26. Snap ring from the sector drive shaft.
• With a small punch, lightly tap the drive
shaft from the sector (figure 36).
27. Drive shaft, sector and lock bolt.
28. Rack and rack spring.