Chevrolet 1977 light duty truck Service Manual page 243

6. Remove the floor pan trim cover screws and
remove the cover.
7. Remove the screws securing the two halves of
the floor pan cover; then remove the screws securing the
halves and seal to the floor pan and remove the covers
(fig. 3B-64 and 3B-65).
8. Remove the transmission indicator cable, if so
e qu pp ed (fig. 3B-63).
9. Move the front seat as fa r back as possible to
provide m axim um clearance.
10. Remove the two column bracket-to-instrument
panel nuts and carefull remove from vehicle. Additional
help should be obtained to guide the lower shift levers
through the firewall opening.
C and K Series Except T ilt Columns-
(Fig. 3 B -6 6 )
Disassembly
N OTE: G and P Series columns differ from those
shown in Figures 3B-66 thru 3B-74.
1. Remove the four dash panel bracket-to-column
screws and lay the bracket in a safe place to prevent
da m a ge to the m ounting capsules.
2. Place the column in a vise using both weld nuts
o f either Set A or B as shown in Figure 3B-67. The vise
jaw s must clam p onto the sides o f the weld nuts
indicated by arrows shown on Set B.
CAUTION: Do not place the column in a vise
by clam ping onto one weld nut o f both sets A
a n d B or by clamping onto the sides not
indicated by arrows, since damage to the
column could result.
3. Remove the Directional Signal Switch. Lock
Cylinder, and Ignition Switch as outlined previously in
this section.
4.
Column Shift Models
lever pivot pin and remove the shift lever.
5. Remove the upper
Remove the four screws attaching the turn signal and
ignition lock housing to the jacket and remove the
housing assembly (fig. 3B-68).
6. Remove the thrust cap from the lower side of
the housing.
7. Lift the ignition switch actuating rod and rack
assembly, the rack preload spring and the shaft lock bolt
and spring assembly out of the housing (fig. 3B-69).
8. Remove the shift lever detent plate (shift gate).
9. Remove the ignition
through the lock cylinder hole by pushing firmly on the
block tooth o f the sector with
screwdriver (fig. 3B-70).
10. Remove the gearshift lever housing and shroud
from the jacket assembly (transmission control lock tube
housing and shroud on floor shift models).
11. Remove the shift
gearshift lever housing (lock tube spring on floor shift
models).
12. Pull the steering shaft from lower end o f the
jacket assembly.
- Drive out the upper shift
bearing thrust washer.
switch actuator sector
a blunt punch or
lever spring from the
13. Remove the two screws holding the back-up
switch or neutral-safety switch to the column and remove
the switch.
14. Remove the lower bearing retainer clip (fig.
3B-71).
15. Automatic and Floorshift Columns
the lower bearing retainer, bearing adapter assembly,
shift tube thrust spring and washer. The lower bearing
m ay be removed from the ad apter by light pressure on
the bearing outer race. Slide out the shift tube assembly.
Manual Transmission
lower bearing adapter, bearing and the first reverse
shift lever. The lower bearing may be removed from
the adapter by light pressure on the bearing outer
race. Remove the three screws from bearing at the
lower end and slide out the shift tube assembly.
Remove the gearshift housing lower bearing from
the upper end o f the mast jacket.
Assembly-All Except Tilt Columns
NOTE: Apply a thin coat of lithium soap grease to
all friction surfaces.
1. Install the sector into the turn signal and lock
cylinder housing. Install the sector in the lock cylinder
hole over the sector shaft with the tang end to the
outside o f the hole. Press the sector over the shaft with a
blunt tool.
2. Install the shift lever detent plate onto the
housing.
3. Insert the rack preload spring into the housing
from the bottom side. The long section should be toward
the handwheel and hook onto the edge of the housing
(fig. 3B-72).
4. Assemble the locking bolt onto the crossover
arm on the rack and insert the rack and lock bolt
assembly into the housing from the bottom with the
teeth up (toward hand-wheel) and toward the centerline
o f the column (fig. 3B-69). Align the 1st tooth on the
sector with the 1st tooth on the rack; if aligned properly,
the block teeth will line up when the rack assembly is
pushed all the way in.
5. Install the thrust cup on the bottom hub of the
housing.
6. Install the gearshift housing lower bearing.
Insert the bearing from the very end o f the jacket.
Aligning the indentations
projections on the jacket (fig. 3B-73).
CAUTION: I f the bearing is not installed
correctly, it will not rest on all o f the stops
provided.
7. Install the shift lever spring into the gearshift
lever (or lock tube) housing. Install the housing and
shroud assemblies onto the upper end o f the mast jacket.
Rotate the housing to be sure it is seated in the bearing.
8. With the shift lever housing in place, install the
turn signal and lock cylinder housing onto the jacket.
The gearshift housing should be in " P a r k " position and
the rack pulled downward. Be sure the turn signal
housing is seated on the jacket and drive the four screws.
- Remove
- Column Shift - Remove the
in the bearing with the