Chevrolet 70 1969 Series, Shop Manual

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STEERING SYSTEM 9A-14
8. Inspect lubrication fittings for crossed or
stripped threads. Check for plugged tube passage.
I N T E R M E D IA T E S H A F T A S S E M B L Y
N O T E : Key numbers in text refer to Figure 19.
1. Install lubrication fitting (13) in center cross
(4); then position center cross in yoke tube (6).
2. Position bushing (1) and new cork washer
(3) on center cross (4). Install snap ring (2).
3. Place a second bushing (1) and new cork
washer on center cross (4) and retain with snap
ring (2).
N O T E : Two more bushings (1), newcorkwash-
ers (3), and snap rings (2) will be installed on
center cross (4) when the intermediate shaft is
installed in the vehicle.
4. Install lubrication fitting (13) in center
cross (14) and position center cross in yoke shaft
(9).
5. Position clamp yoke (15) on center cross
(14).
6. Place two bushings (11) and two new cork
washers (10) on center cross (14); then secure
with two snap rings (12).
7. Repeat step 6 and install two more bush­
ings (11) and two new cork washers (10). Secure
parts with two snap rings (12).
8. Position dust cap (8), metal washer (5), and
new felt washer (7) on yoke shaft (9); then insert
yoke shaft in yoke tube and sleeve assembly (6).
Bend tangs of dust cap (8) down against yoke tube.
S T E E R IN G C O L U M N A N D
UPPER S H A F T A SS E M B L Y
1. If previously removed, press lower bearing
into mast jacket.
2. Position directional signal control assembly
in housing and attach with screws. Tighten screws
to 30-40 inch-pounds torque. Install directional
signal control lever.
3. Place "Stop" clamp on lower end of upper
shaft and install bolt, nut, and lock washer loosely.
4. Install washer, spring, spring seat, and
seal on lower end of upper shaft.
5. Position center cross on upper shaft yoke
in intermediate shaft tube yoke. Install two new
cork washers, two tube yoke bushings, and two
snap rings.
6. Install bearing sleeve in column upper
bearing.
IN S T A L L A T IO N (Fig. 18)
1. Position steering column, upper and inter­
mediate steering shaft, steering column seal, and
seal plate in vehicle.
2. Position intermediate shaft clamp yoke on
steering gear worm shaft with match marks align­
ed.
3. Raise mast jacket into position and install
bolts attaching steering column to support and
braces. Install steering column to floor seal and
retainer.
4. If used, install trailer brake hand control
valve.
5. Install steering wheel as described under
"Steering Wheel Replacement” earlier.
6. Adjust "Stop” on lower end of upper shaft
to allow 0.005" (min.) to 0.030" (max.) axial move­
ment of shaft assembly and tighten stop bolt nut to
5-6 foot-pounds torque.
C A U T IO N : This clearance must be maintained
to prevent excessive axial chucking of upper steer­
ing shaft or binding of upper steering shaft bearings.
N O T E : If steering wheel "clunking" noise is
audible, refer to "Steering Wheel Clunking Noise"
immediately following for procedure to remedy
this condition.
STEERING WHEEL “CLUNKING
NOISE”
When steering wheel "clunking" noise is ex­
perienced and is accompanied by up and down
movement of the steering wheel, it is possible that
the mast jacket clamps and lower steering shaft
clamp need adjusting. The "clunking" is caused by
up and down movement of upper and lower shaft
joints and can be eliminated as follows:
1. Loosen mast jacket clamps at dash and
firewall.
2. Push steering wheel down until all up and
down movement has been removed.
3. Tighten clamp at dash; then tighten clamp
at firewall (if used).
4. Adjust "stop” clamp at bottom of steering
shaft to allow 0.005" to 0.030" up and down move­
ment of the upper shaft assembly (fig. 18).
N O T E : If "clunking" still exists, the yoke and
sleeve assemblies should be disassembled, in­
spected for wear, and replaced if necessary. This
is an important safety procedure which will pre­
vent internal steering shaft joint interference.
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK SH O P M A N U A L