Chevrolet 1977 light duty truck Service Manual page 250

ACTUATOR
Fig. 3ES-82 In sta llin g Bearing Housing
J 23073 4
U P PE R SHIFT T U BE
Fig. 3 B -8 3 -In s ta llin g Shift Tube
1. If the b earing housing was disassembled, repeat
the following steps:
a. Press the bearings
removed, using a suitable size socket. Be careful not to
da m a ge the housing or bearing during installation.
b. Install the lock shoe springs, lock shoes and
shoe pin in the housing. Use an approxim ate .180" rod
to line up the shoes for pin installation.
c. Install the shoe release lever, spring and pin.
N O T E : To relieve the load on the release lever,
hold the shoes inw ard and wedge a block between
the top of the shoes (over slots) and bearing
housing.
d. Install the sector drive shaft into the housing.
Lightly tap the sector onto the shaft fa r enough to install
the snap ring. Install the snap ring.
RACK
SHIFT B O W L
J 23073-3
LOCK
PLATE
W A V E - -
J 23073-1
W A S H E R
J 23073-2
FLAT
W A S H E R
into the housing,
e. Install the lock bolt and engage it with the
sector cam surface. Then install the rack and spring. The
block tooth on the rack should engage the block tooth on
the sector (fig. 3B-81). Install the external tilt release
lever.
f. Install the lock bolt spring and retaining screw
(fig. 3B-76). Tighten the screw to 35 in. lbs.
2. Install the shift lever spring into the housing by
windng it up with pliers and pushing it into the housing.
On floor shift models, install the plunger, slide the
gearshift lever housing onto the mast jacket.
3. Install the bearing support lock plate wave
washer.
4. Install the bearing support lock plate. Work it
into the notches in the jacket by tipping it toward the
housing hub at the 12 o 'clock position and sliding it
under the jacket opening. Slide the lock plate into the
notches in the jacket.
5. Carefully install the shift tube into the lower
end o f the mast jacket. Align keyway in the tube with the
key in the shift lever housing. Install the wobble plate
end o f Tool J-23073 into the upper end of the shift tube
far enough to reach the enlarged portion o f the tube.
T hen install the ad apter over the end o f the tool, seating
it against the lock plate. Place the nut on the threaded
end o f the tool and pull the shift tube into the housing
(fig. 3B-83). Remove Tool J-23073.
CAUTION: Do not push or tap on the end o f
the shift tube. Be sure that the shift tube lever
is aligned with the slotted opening at the lower
end o f the m ast jacket or damage to the shift
tube and mast jacket could result.
6. Install the bearing support thrust washer and
retaining ring by pulling the shift lever housing up far
enough to compress the wave washer.
7. Install the bearing support by aligning the "V "
in the support with the "V" in the jacket. Insert the
screws through the support and into the lock plate and
torque to 60 lbs. in.
8. Align the
notches in the jacket and push the adap ter into the lower
end of the mast jacket. Install lower bearing, bearing
reinforcem ent and retaining clip, being sure that the clip
is aligned with the slots in the reinforcement, jacket and
adapter.
9. Install the centering spheres and anti-lash spring
if
in the upper shaft. Install the lower shaft from the same
side of the spheres that the spring ends protrude.
10. Install the steering shaft assembly into the shift
tube from the upper end. Carefully guide the shaft
through the shift tube and bearing.
11. Install the ignition switch actuator rod through
the shift lever housing and insert in the slot in the
bearing support. Extend the rack downward from the
bearing housing.
12. Assemble the bearing housing over the steering
shaft and engage the rack over the end o f the actuator
rod (fig. 3B-82).
13. With the external release lever installed, hold
the lock shoes in the disengaged position and assemble
lower bearing adap ter with the