STEERING 9-23
Fig.
47—I retaliating Spherical Joint Spring
upper shaft should be on the same side as the
flat on the lower shaft.
d. Install the upper shaft with spheres into the lower
shaft.
e. Insert the joint preload spring through the
spheres into the lower shaft. Using the upper
shaft to hold the spring in place, carefully feed
the spring into the upper shaft joint with a narrow
bladed screwdriver (fig. 47).
17.
Slide the race and bearing over the top of steering
shaft and install shaft in shift tube from upper end.
Carefully guide shaft through shift tube, taking care
not to tear or push out foam seal cemented inside
lower end of shift tube.
18.
Install tilt control lever and, holding lock shoes in
disengaged position, assemble bearing housing on the
shaft over the support until pivot pin holes line up.
19.
Secure bearing housing in position by pressing in the
pivot pins.
20.
Place housing in full up position and install tilt
spring, tapered end first. Install tilt spring retainer
using screwdriver in retainer slot.
21.
Install turn signal switch with three mounting
screws. Place short length screw in top position
above lock shoes.
NOTE:
If the steering shaft, adapter, mast
jacket, support or bearing housing has been,
replaced, the component stack-up in the column
will be different. Replace the lower plastic in-
jected tolerance ring and the lower bearing pre-
load spring with the necessary tolerance ring
kit as described below.
22.
Slide kit spring, tolerance ring kit, washers, and
retaining ring on steering shaft from lower end.
Seat retaining ring in steering shaft groove.
23.
Screw tolerance ring kit sections together leaving
enough inner edge exposed for later adjustment as
shown in Figure 35.
24.
Install inner race, inner race seat, and bearing lock-
nut on end of steering shaft, using locknut wrench
ToolJ-22599 (fig. 39).
25.
Remove any remaining looseness from internal col-
umn stack-up by unscrewing inner tolerance kit ring
section; then screw inner ring section back in 1/8 to
1/4 turn (fig. 36).
26.
Tighten bearing locknut installed in Step 24 above
until the torque required to rotate the steering shaft,
with the housing in the mid position, is 23 lb. in.
27.
Touch the outer surface of the tolerance ring kit at
several locations with a hot soldering iron to melt
the threads of the inner and outer sections together.
28.
Check to insure hazard warning switch is pushed in.
Remove tilt release control lever and install turn
signal switch cover using turn signal cover installer
Tool J-21853 (fig. 48). On automatic column, be sure
key in the cover is aligned with keyway in bearing
housing.
29.
Place turn signal control lever in position and se-
cure with mounting screw. Screw tilt release control
lever in. Screw hazard warning knob in.
30.
On automatic columns, place transmission shift con-
trol lever in position and insert lever retaining pin.
31.
On automatic columns to be installed in a Camaro,
insert the bulb and cap into the turn signal switch
housing (fig. 33). Slide pointer into position in bowl.
Install dial and dial retainer with mounting screws
removed during disassembly.
32.
Install steering shaft flange on bottom of shaft and
secure with flange bolt.
33.
Remove column from vise. Pull wires back against
column leaving a small amount of slack. Snap wiring
protector into position. Be sure enough slack re-
mains in wires to allow column head to tilt to full
up position.
34.
If mesh cover was removed, wrap mesh cover around
mesh portion of jacket and secure with friction or
electricians tape.
35.
Slide cancelling cam and cancelling cam spring on
upper end of shaft.
Disassembly—Standard Corvette Column (Fig. 49)
1.
Place column on a suitable work bench.
2.
Remove upper bearing preload spring and cancelling
cam from end of column.
3.
Slide escutcheon clear of wiring protector and re-
move protector.
4.
Remove turn signal lever retaining screw and re-
move lever. Push hazard warning knob in; unscrew
and remove knob.
Fig.
48—Installing Turn Signal Switch Cover Using
Signal Switch Installer Tool J-21853
CHEVROLET CHASSIS SERVICE MANUAL
STEERING
9-24
1.
Upper Flange
2.
Retaining Screws
3.
Mast Jacket
4.
Wiring Protector
5. Bearing
6. Signal Switch
. Screws
7.
Turn Signal Switch
Fig.
49—Standard Corvette Column—Exploded View
8.
Upper Bearing
Housing
9.
Signal Switch Cover
10.
Escutcheon
11.
Steering Wheel Nut
12.
Upper Bearing Preload
Spring
13.
Cancelling Cam
5. Remove "C" retaining ring from upper steering
shaft using snap ring remover Tool J-22569 (fig. 50).
Remove thrust washer and wave washer.
6. Remove three upper flange mounting bolts.
7. Slide upper end assembly with escutcheon off end of
column.
8. If necessary to service upper end components, re-
move the turn signal switch mounting screws. Re-
move the switch and upper bearing housing from
cover.
9. Carefully slide steering shaft assembly out of lower
end of mast jacket.
10.
If necessary, remove lower bearing assembly from
lower end of mast jacket and discard bearing
assembly.
11.
Remove flange bolt and flange from steering shaft.
NOTE:
If the steering shaft assembly, mast
jacket, bearing housing, jacket flange, or lower
bearing assembly has been replaced, the com-
ponent stack-up in the column will be different.
Replace the lower plastic injected tolerance
ring an4 lower bearing preload spring with the
tolerance ring kit.
12.
Slide lower bearing spring, plunger, tolerance ring
and sleeve assembly, and thrust washer off shaft.
14.
Retaining Ring
15.
Thrust Washer
16.
Wave Washer
17.
Spring
18.
Spacer
19.
Washer
20.
Retaining Ring
21.
Steering Shaft
Fig.
50-Removing "C" Ring Retainer Using Tool J-22569
CHEVROLET CHASSIS SERVICE MANUAL
STEERING 9-25
\
£$&+
SIGNAL SWITCH
^ ^-BEARING
UPPER FLANGE^
HOUSING
COVER
»,
ESCUTCHEON
"^^^^^fr
Fig.
51-Assembling Upper End
13.
If necessary, remove two seals from lower end I.D.
of jacket.
14.
If necessary, unwrap mesh cover from jacket.
Assembly—Standard Corvette Column (Fig. 49)
RING KIT V
INNER SEaiON-n 1
\
[1
3
^^•-
'^p|§
W- - V: -: ';'^ /
W ^-RI^G KIT
OUTER SECTION
Fig.
52—Tolerance Ring Kit—First Adjustment
14.
Touch the outer surface of the tolerance ring kit at
several locations with a hot soldering iron to melt
the threads of the inner and outer ring sections
together.
1.
4.
5.
6.
of lithium soap grease to all 15. Place turn signal switch lever in position and secure
10.
11.
12.
13.
Apply a thin coating
friction surfaces.
If seals were removed from lower end I.D. of jacket,
cement two new seals into position.
If lower bearing assembly was removed, press new
lower bearing into position at lower end of mast
jacket.
Slide thrust washer, tolerance ring kit, plunger, and
new kit spring into position from top of steering
shaft.
Install flange and flange bolt on lower end of steering
shaft.
Carefully slide steering shaft into lower end of mast
jacket.
Assemble upper bearing housing and turn signal
switch into cover and secure entire assembly to mast
jacket upper flange with three signal switch mounting
screws as shown in Figure 51.
Feed turn signal switch wires through escutcheon.
Slide escutcheon and upper assembly onto upper end
of column. Secure upper flange to column with three
mounting bolts.
Screw tolerance ring kit sections together leaving
enough inner edge exposed for later adjustment (fig.
52).
Slide wave washer, thrust washer, and "C" retaining
ring loosely into place at top of shaft.
Complete installation of "C" retaining ring using
snap ring installer Tool J-22659 as shown in Figure
50.
Be sure retaining ring is completely seated into
steering shaft groove.
Remove any remaining looseness from internal col-
umn stack-up by unscrewing inner tolerance ring kit
section; then screw inner kit section back in 1/8 to
1/4 turn. See Figure 53.
with screw. Screw hazard warning knob into position.
16.
Pull signal switch wires flat against column, install
wiring protector, and slide escutcheon into position.
17.
If mesh cover was removed, wrap mesh cover around
mesh portion of mast jacket and secure with friction
or electricians tape.
18.
Install spring and cancelling cam on end of shaft.
RING KIT
OUTER SECTION
fig.
53-Tolerance Ring Kit-Final Adjustment
CHEVROLET CHASSIS SERVICE MANUAL
STEERING
9-26
Fig.
54—Corvette Telescoping Column—Exploded View
1.
Wiring Protector
2.
Screw
3. Screw
4. Turn Signal Switch
5. Upper Bearing
Housing
6. Signal Switch Cover
7. Escutcheon
8
9
10
11
12
13
14
8.
Mast Jacket
9. Bumper
Key
Bumper
Bumper Key Strap
Steering Wheel Nut
Upper Bearing Preload
Spring
15.
Cancelling Cam
16.
Retaining Ring
17.
Thrust Washer
18.
Wave Washer
19.
Retainer
20.
Bearing
21.
Spring
22.
Washer
23. Retaining Ring
24.
Lower Steering
Shaft
25.
Upper Steering
Shaft
26.
Locking
Rod
27.
Wedge
Disassembly—Corvette Telescoping Column (Fig. 54).
1.
Place column on a suitable work bench.,
2.
Remove upper bearing preload spring and cancelling
cam from end of shaft.
3.
Remove turn signal lever retaining screw and re-
move lever. Push hazard warning knob in; unscrew
and remove knob.
4.
Remove upper retaining ring from upper steering
shaft using a screwdriver. Remove thrust washer
and wave washer. -
5. Remove three- screws from the lower bearing
retainer.
6. Carefully slide steering shaft assembly out of lower
end of mast jacket.
7. Remove flange bolt and flange from lower end of
shaft. -
CAUTION: Use caution when removing the low-
er retaining ring in the following step. The lower
bearing washer is under load from the com-
pressed spring and could cause injury when the
lower retaining ring is removed.
8. Carefully remove lower retaining ring as shown in
Figure 55. Remove washer* spring, packing, and
CHEVROLET CHASSIS SERVICE MANUAL
STEERING 9-27
Fig.
55— Removing Lower Bearing Retaining Ring
bearing assembly from lower end of shaft.
9. Push upper steering shaft section into lower section
until spring pin is visible at pin access hole in lower
section. Drive out spring pin.
10.
Remove upper shaft section from lower section. If
necessary, replace locking wedge and locking rod at
this time.
11.
Remove bumper key strap (fig. 56). Remove keys and
bumper assembly.
12.
Remove screws securing bottom of wiring protector
to column.
13.
Slide inner jacket section, switch cover, switch,
upper bearing housing, wiring protector, and es-
cutcheon off top end of jacket.
14.
If necessary, remove three turn signal switch mount-
ing screws and remove switch and upper bearing
housing.
15.
If necessary, remove seals from I.D. of mast jacket.
16.
If necessary, unwrap mesh cover from jacket.
Assembly—Corvette Telescoping Column (Fig. 54)
1.
Apply a thin coating of lithium soap grease to all
friction surfaces.
2.
If seals were removed from I.D. of mast jacket,
cement new seals in positions where old seals were
removed.
3.
Place locking wedge and locking rod into upper shaft
and slide upper shaft into lower shaft.
4.
Align upper and lower shafts and insert spring pin
into access hole.
5. Install bearing, packing, spring, washer, and retain-
ing ring on bottom of steering shaft. Seat the re-
taining ring into the steering shaft groove with a
screwdriver.
6. Carefully slide steering shaft into lower end of mast
jacket.
7. Install bearing retainer over lower end of shaft and
lower end of jacket. Secure retainer with three
screws.
8. Install flange and flange bolt on lower end of steering
shaft.
9. Feed wires of turn signal switch through turn signal
switch cover and escutcheon, and place switch and
upper bearing housing in cover. Secure switch to
cover with three mounting screws.
10.
Place wiring protector inside escutcheon.
11.
Start escutcheon and wiring protector, with signal
switch wires, over end of outer jacket.
12.
Slide inner jacket section into outer jacket section.
13.
Secure switch cover to flange of inner jacket section
by tightening the signal switch mounting screws.
14.
Secure the bottom of the wiring protector to the col-
umn with two screws.
15.
Assemble keys and bumper and place the entire as-
sembly in position in the jacket. Install bumper key
strap.
16.
Slide wave washer, thrust washer, and upper retain-
ing ring into place at top of shaft. Seat retaining ring
in steering shaft groove with a screwdriver.
17.
Place turn signal switch lever in position and secure
with screw. Screw hazard warning knob into position.
18.
If mesh cover was removed, wrap mesh cover around
mesh section of jacket and secure with electricians
or friction tape.
19.
Slide cancelling cam and upper bearing preload
spring over top end of shaft.
Installation
NOTE:
Before placing column in position in
vehicle, refer to figures 19 through 23 and slide
dash panel seals, covers, plates, and clamps
loosely into position on column for later
installation.
1.
Move front seat back as far as possible to provide
Fig.
56—Removing Bumper Key Strap
CHEVROLET CHASSIS SERVICE MANUAL
STEERING 9-34
Fig.
64-Over Center Adjustment
transmission fluid "Type A" bearing the mark
"AQ-ATF" followed by a number and the suffix
letter "A".
ADJUSTMENTS
POWER STEERING GEAR
Chevrolet, Chevelle, and Camaro
The over-center adjustment (fig. 64) is the only power
steering gear adjustment which can be made on the car.
However, in order to make this adjustment, it is also
necessary to check the combined ball and thrust bearing
preload.
If the vehicle is equipped with a tilt column it will be
necessary to disconnect the steering coupling to obtain a
torque reading of the column. This torque should then be
subtracted from any reading taken on the gear.
1.
Disconnect the pitman arm from the relay rod.
2.
Loosen the pitman shaft adjusting screw loeknut and
thread the adjusting screw out to the limit of its
travel through the side cover. '. •
3.
Disconnect steering column harness at chassis wir-
ing connector plug.
4.
Remove horn button.
5.
Turn the steering wheel through its full travel, then
locate the wheel at its center of travel.
6. Gheck the combined ball and thrust bearing preload
with an inch-pound torque wrench on the steering
shaft nut by rotating through the center of travel
(approximately 1/4 turn in each direction). Note the
highest reading.
7.
Tighten the pitman shaft adjusting screw and check
torque at steering shaft nut until over center preload
and total steering gear preload falls within speci-
fications. Refer to torque specifications at rear of
manual for correct torque values.
8. Install horn button. Connect steering column harness
at wiring connector plug.
Chevy II and Corvette
The steering gear used with power steering is adjusted
in the same manner as the manual steering gear.
PUMP BELT TENSION
1.
Loosen nut on pivot bolt and pump brace adjusting
nut.
CAUTION: Do not move pump by prying against
reservoir or by pulling on filler neck.
2.
Move pump, with belt in place until belt is tensioned
to specifications as indicated by Tool J-7316 (Fig-.
65).
3.
Tighten pump brace adjusting nut. Then tighten pivot
bolt nut.
HYDRAULIC SYSTEM CHECKS
The following procedure outlines methods to identify
and isolate power steering hydraulic circuit difficulties.
This test is divided into two parts. Test number one
provides means of determining whether power steering
system hydraulic parts are actually faulty. If test number
one results in readings indicating faulty hydraulic opera-
tion, test number two will identify the faulty part. Be-
fore performing hydraulic circuit test, carefully check
belt tension and condition of driving pulley. Strand
tension of belt should be 125 lbs. on new belts and 75 lbs.
on old belts, as indicated by Tool J-7316 (Fig. 65).
Test Number One—Oil Circuit Open
Engine must be at normal operating temperature. In-
flate front, tires to correct pressure. All tests are made
with engine idling, so adjust engine idle speed to correct
specifications listed in Section 6 and proceed as follows:
a. With engine not running, disconnect flexible pres-
sure line from pump and install Tool J-5176 as
Fig.
65— Checking Belt Tension with Tool J-7316
CHEVROLET CHASSIS SERVICE MANUAL
ELECTRICAL-BODY AND CHASSIS 12-3
Fig.
2 - T-3 Safety Aimer
wearing away the insulation due to vibration.
By referring to the wiring diagrams, circuits may be
tested for continuous circuit or shorts with a conventional
test lamp or low reading volt meter.
HEADLAMP ADJUSTMENT-
T-3 HEADLAMPS
CAUTION: Check and tighten radiator support
grille retaining bolts prior to attempting head-
lamp aiming. Distorted grille or supports in
this area will hinder proper aiming of head-
lamps. On Corvette models make sure head-
lamp panel is adjusted properly - refer to
"Headlamp Panel Travel Adjustment".
When aiming headlamps, vehicle should be filled to ca-
pacity with gas, oil, and water but no load. Tires should
be uniformly inflated to recommended pressure.
the T-3 Safety Aimer-Type B (fig. 2), is used for the
headlamp aiming description that follows. An adapter is
required with the Type B T-3 Aimer when adjusting the 7
inch headlamp used on the Chevy n vehicle.
1.
Drive vehicle onto selected aiming area. Bounce
vehicle several times and allow to settle.
2.
Remove headlamp bezels.
3.
Mount the T-3 Aimers on either the No. 1 or No. 2
pair of headlamps so that "the points of the headlamps
engage the smooth inner ring of the aimers.
HORIZONTAL
AIMING
SCREW
STRING OVER
"2R" ON AIMER ARM
Fig.
4—-Headlamp Horizontal Adjustment
NOTE:
In the dual headlamp installation, the
inboard unit is designated No. 1 and the outboard
unit is designated No. 2.
4.
Secure the aimers to the headlamp units by firmly
pressing knob at center of each aimer (fig. 3). Ro-
tate crossarms inboard to approximate horizontal
position.
NOTE:
Moisten suction cups slightly to obtain
maximum holding force.
5. With both aimers in place, knot both ends of elastic
string and, using slots provided, fasten string across
horizontal crossarms of each aimer.
6. Rotate both aimers so that the string just clears the
points on the crossarms.
HORIZONTAL ADJUSTMENT
7. a. Turn horizontal aiming screw, Figure 4, on left-
VERTICAL ADJUSTMENT SCREW
Fig.
3 - Installing Aimer on Headlamp Unit
Fig.
5 - Headlamp Vertical Adjustment
CHEVROLET CHASSIS SERVICE MANUAL
ELECTRICAL-BODY AND CHASSIS 12-5
Fig.
8—Turning Level Adjusting Screw to Calibrate Aimer
HEADLAMP PANEL TRAVEL ADJUSTMENT
Corvette (Fig. 9)
The headlamp panel travel is limited by two adjusting
screws which are located on the arms of the shaft
mounted stop.
Fig.
9—Headlamp Panel Travel Adjusting Screw
1.
Raise hood and as a safety precaution install a bolt
through the hole in the hood support - secure bolt
with a nut.
2.
Adjusting screw (A) limits headlamp panel travel in
open position - adjust this screw so that mounting
face of panel is within 2 degrees of vertical in the
fully open position.
NOTE: Each headlamp operates independently
of the other, therefore individual adjustment is
required for each panel.
3.
Adjusting screw (B) limits headlamp panel travel in
closed position - adjust this screw so that panel is
flush to upper body panel in the fully closed position.
4.
Lock both screws by tightening lock nut against stop.
5.
Remove safety bolt as installed in Step 1 and close
the hood.
SERVICE OPERATIONS
FRONT LIGHTING
HEADLAMP REPLACEMENT (Figs. 10 and 13)
1.
On Corvette and Camaro Rally Sport models, rotate
the headlamp panel to the open position.
2.
Remove headlamp bezel retaining screws and remove
bezel. On Chevrolet, Chevelle and Camaro models
lift bezel to disengage retaining tabs from slots in
filler panel.
3.
On Chevy n models remove three retaining ring at-
taching screws. On other models disengage spring
from the retaining ring and remove two attaching
screws.
4.
Remove retaining ring, disconnect sealed beam unit
at wiring connector and remove the unit.
5.
Attach connector to replacement unit and position
unit in place making sure the number molded into the
lens face is at the top.
NOTE: In the dual headlamp installation the
inboard unit (NO. 1) takes a double connector, the
outboard unit (No. 2) takes a triple connector
plug.
6. Position retaining ring into place and install the re-
taining ring attaching screws and spring (as
applicable).
7.
Check operation of unit and install the headlamp
bezel.
PARKING LAMP REPLACEMENT
Bulb
1.
Remove two lens retaining screws and disengage lens
from housing.
2.
Replace bulb, check operation of lamp, reinstall lens
and retaining screws.
Lamp Housing
Chevrolet, Chevelle and Chevy II (Figs. 10 and 11)
1.
Disconnect lamp wire assembly in-line connector
from wiring harness.
CHEVROLET CHASSIS SERVICE MANUAL