STEERING 9-4
8. Reassemble pitman arm to sector shaft, lining up
marks made during disassembly. Refer to torque
specifications at rear of manual for correct torque
value.
9. Install horn cap or ornament and connect steering
column harness at chassis connector.
NOTE:
Chevy.n models are equipped with a
shim at the frame to steering gear mounting
bolts.
Shims may be removed or installed as
required for proper steering gear alignment.
STEERING WHEEL ALIGNMENT AND
HIGH POINT CENTERING
1.
Set front wheels in straight ahead position. This can
be checked by driving vehicle a short distance on a
flat surface to determine steering wheel position at
which vehicle follows a straight path.
2.
With front wheels set straight ahead, check position
of mark on wormshaft designating steering gear high
point. This mark should be at the top side of the shaft
at 12 o'clock position and lined up with the mark in
the coupling lower clamp.
3.
If gear has been moved off high point when setting
wheels in straight ahead position, loosen adjusting
sleeve clamps on both left and right hand tie rods,
then turn both sleeves an equal number of turns in
the same direction to bring gear back on high point.
CAUTION: Turning the sleeves an unequal
number of turns or in differential directions will
disturb the toe-in setting of the wheels.
4.
Readjust toe-in as outlined in Section 3 (if necessary).
5. With wheels in a straight ahead position and the
steering gear on highpoint, check the steering wheel
alignment by measuring the distance from each hori-
zontal spoke to the horizontal centerline of the
steering wheel (fig. 5). If the horizontal spokes are
over 1-1/8 inches from the horizontal position the
wheel should be removed and centered. (See steering
wheel removal in this section.)
TOE-IN ADJUSTMENT
Adjust the steering linkage for proper toe-in setting as
outlined in Section 3.
CORVETTE STEERING RATIO (Fig. 6)
The Corvette steering ratio may be changed as follows:
CAUTION: Do not use the rearward hole in the
steering arm with power steering equipment or
interference may result.
1.
Remove tie rod ball stud nut at steering arm and
disconnect tie rod from steering arm.
2.
Move tie rod end to forward hole for 17.6:1 ratio
(fast ratio) or rear hole for 20.2:1 ratio (standard
ratio).
3.
Install tie rod stud nut and tighten securely. Repeat
operation on opposite steering arm.
COMPONENT REPLACEMENT AND REPAIRS
STEERING WHEEL
REGULAR PRODUCTION (Fig. 7)
Removal
1.
Disconnect steering column harness from chassis
wiring harness at connector (fig. 8).
2.
Pull out horn button cap or center ornament and
retainer.
3.
Remove three screws from the receiving cup.
4.
Remove the receiving cup, belleville spring, bushing,
and pivot ring.
5. Remove the steering wheel nut and washer.
6. Using Tool J-2927, install centering adapter on
steering shaft, thread puller anchor screws into
threaded holes provided in steering wheel. Turn
center bolt of tool clockwise to remove steering
wheel (fig. 9).
Installation
CAUTION: Direction signal control assembly
must be in "neutral position when assembling
steering wheel to prevent damage to cancelling
cam and control assembly.
1.
With directional cancelling cam and horn contact as-
sembly in place, set wheel onto steering shaft.
Fig. 7—-Regular Wheel and Horn Attachments
CHEVROLET CHASSIS SERVICE MANUAL
ELECTRICAL-BODY AND CHASSIS 12-4
b.
hand lamp until the string is positioned over the
crossarm centerline. Turn the screw clockwise
in making the final adjustment to take up play in
the headlamp mechanism.
Repeat the above procedure on the right-hand
lamp to complete the horizontal adjustment of the
headlamps.
VERTICAL ADJUSTMENT
8. a. Numeral "2" (fig. 5) should appear in the "down"
window of each aimer. If not, loosen knob at
underside of aimer arm and slide back and forth
until the numeral does appear.
NOTE:
This setting will give a 2" drop of the
headlamp high beam spot centerline on a screen
placed 25 feet forward of the vehicle. Check
state laws for proper vertical setting.
b.
Turn headlamp vertical aim screw (fig. 5) on left-
hand unit counter-clockwise until the bubble is at
the inner end of the glass tube. Then turn screw
clockwise until bubble is centered in tube.
c. Repeat this procedure on right-hand headlamp
unit to complete vertical adjustment of lamps.
9. Recheck the string at the ends of each crossarm for
correct setting and the bubble on each aimer for
centered position.
10.
Remove the aimers by pulling on the suction cup tabs
through the openings in the aimers (fig. 6).
11.
With headlamps properly aimed, replace headlamp
bezels.
HOW TO SELECT A LEVEL AIMING AREA
1.
Select area you believe to be level.
2.
Remove headlamp bezels and install Aimers on each
headlamp (fig. 3) making sure aiming lugs engage
smoooth inner ring of the Aimer.
"
To install Aimer,
press firmly on the knob extending out from the cen-
ter of the Aimer base. This forces the suction cup
into place on the Sealed Beam unit.:
3.
Loosen the slider knob beneath the aimer arm and
set the numeral "2" in the DOWN view window (fig.
7).
Back vertical lamp adjustment out on each lamp
until bubble is outside of black line of vial, then cen-
ter bubble in between black line of vial by turning
clockwise.
VERTICAL AIMING SCREW
VIEW WINDOWS
BUBBLE
Fig.
6 - Removing Aimer from Headlamp
Fog.
7- Selecting Level Aiming Area
4.
After botli bubbles are centered, turn the car around
end for end, making sure the tires are in the spots
made on the floor before the car was moved.
.5.
If the bubbles are still within the two outside black
marks on the vials, the floor is level enough to use
the Aimer as it comes from the factory.
NOTE:
A quick level check can be made by
using the T-3 Safety-Aimer as a level. Use
with a true eight to ten foot two by four as an
extension. Make sure pads on base of Aimer
are used. Place the board where you expect the
wheels to be and take readings as outlined above.
6. If either bubble moves outside the black lines of the
vial there is too much slant to the floor. Try driving
the car in at different angles onto the aiming area.
If bubbles can
not
be centered follow procedure under
"How to Compensate for Unlevel Floor."
NOTE:
When level portion of floor is obtained,
mark tire spots on floor so spots can be used
next time without calibrating Aimer.
TO COMPENSATE FOR UNLEVEL FLOORS
If your floor is not level within the limits specified, the
T-3 Aimer can be calibrated to compensate for the error
in the floor. Follow this procedure with both aimers.
1.
Drive the car onto the area for which you wish to
compensate the aimers, and install the aimers in
place on the headlamps.
2.
Loosen knob beneath the aimer arm and move the
slider until the bubble is centered.
3.
Record the numeral in the view window. (This nu-
meral is to be used only for recalibration.)
4.
Move the slider to a position halfway between this
recorded numeral and the numeral "2" in the
DOWN
window. (This numeral is used only in recalibration
and not for headlamp aiming.)
5.
Recalibrate aimers by turning screw shown in Figure
8 until the bubble is centered.
6. The T-3 Aimers are now calibrated for the selected
area. All future aiming must be done in the same
area and with the car pointed in the same direction.
Mark the tire spots on the floor so that other vehi-
cles can be located in the same position.
CHEVROLET CHASSIS SERVICE MANUAL
ELECTRICAL-BODY AND CHASSIS 12-19
VIEW A
•CONTACT SUPPORT
DRIVE SLOT IN LINE
WITH HOLE IN SWITCH
PAWL
CONTACT POINT B
CONTACT SUPPORT
DRIVE SLOT IN LINE
WITH HOLE IN SWITCH
FLOOR SHIFT
(EXCEPT CAMARO)
COLUMN SH
Fig.
31 - Neutral Safety Switches
PARKING BRAKE ALARM SWITCH REPLACEMENT
Corvette (Fig. 33)
1.
Remove seat belt retainer and parking brake cover
assembly from center console.
2.
Disconnect wire from brake alarm switch.
3.
Remove retaining screw and switch from
reinforcement.
4.
Position new switch to reinforcement and install re-
taining screw.
5. Connect switch wire and check operation of switch.
6. Install cover and seat belt retainer assembly.
Chevrolet, Chevelle, Chevy II and Camaro (Fig. 34)
1.
Disconnect wiring connector at switch terminal.
2.
Remove nut and lock washer or retaining bolt and
disengage switch from brace.
3.
To install, reverse removal procedure.
INSTRUMENT PANEL COMPARTMENT
LAMP/SWITCH REPLACEMENT
1.
Disconnect battery ground cable.
2.
Reach into glove box, depress bulb in end of switch
and turn counterclockwise to remove bulb.
3..
Remove switch from socket. Carefully detach wire
and terminal from switch.
NOTE:
On some model switches, the wire and
terminal cannot be detached from the switch
making it necessary to cut and splice the switch
wire.
4.
Insert wire and terminal into new switch.
5. Push switch into place and install bulb by setting it in
place, depressing and turning it clockwise.
CIGARETTE LIGHTER REPLACEMENT
Chevrolet, Chevy II, Camaro and Corvette (Fig. 23)
1.
Disconnect battery ground cable.
2.
Disconnect wire connector at rear of lighter unit
under dash.
3.
Remove retainer from rear of housing assembly and
disengage lighter unit from panel.
4.
To install, reverse removal procedure.
Chevelle (Fig. 35)
1.
Disconnect battery ground cable.
CHEVROLET CHASSIS SERVICE MANUAL
SPECIFICATIONS
HEATING
AND AIR
CONDITIONING
SECTION
1A
Compressor
Make Frigidaire
Type
. 6
Cylinder Axial
Displacement
Four-Season
12.6
Cu.
In.
Universal
and
Ail-Weather
.... .10.8 Cu. In.
Rotation Clockwise
Compressor Suction
and
Discharge
Connector Bolt Torque
.......
25 ft lbs.
Compressor Clutch Coil
Ohms
(at
80°F.).
4.18-4.38
Amps
(at
80°F.)
2.86 @ 12
Volts
Torques
Rear Head
to
SheU Stud
Nut 23 lb. ft
Shaft Mounting
Nut 15 lb. ft
Belt Tension.
See
Tune-Up Chart
System Capacities
Refrigerant
R-12
Four-Season
and
Comfortron
Systems.
............
3 lbs., 12 oz.
Universal Systems
Chevrolet, Chevelle,
and
Camaro.
... 3 lbs.
Chevy
n 2 lbs. 8 oz.
All-Weather System
2 lbs. 8 oz.
Compressor
Oil 525
Viscosity
All Systems
11 oz.
Fuses
Comfortron Systems
.
Four-Season Systems
.
Universal Systems
. .
All-Weather System.
.
Fuse
Block
25
amp.
25
amp.
25
amp.
25
amp.
In
Line
30
amp.
30
amp.
20
amp.
20
amp.
SECTION
3
WHEEL ALIGNMENT SPECIFICATIONS (Vehicle
dt
Curb Weight)
Caster*
Camber*
Steering Axis
Inclination
tToe-In (Total)
Wheel Bearing
Adjustment
Preload
End Movement
Chevrolet
Pos.
3/4° ± 1/2°
Pos.
1/4° ± 1/2°
7-1/2° ± 1/2°
@l/8"
to 1/4"
12 ft lbs.
zero
.001"
to .008"
Chevelle •
(SS and El Camino)
Neg. 1/2° ± 1/2°
(All others)
Neg. 1° ± 1/2°
Pos.
1/2° ± 1/2°
8-1/4° ± 1/2°
1/8" to 1/4"
12 ft lbs.
zero
.001"
to .008"
Chevy n
Pos.
1° ± 1/2°
Pos.
1/2° ± 1/2°
7° ± 1/2°
1/4" to 3/8"
12 ft lbs.
zero
.000"
to .004"
Corvette
Pos.
1° ± 1/2°
Pos.
3/4° ± 1/2°
7° ± 1/2°
3/16" to 5/16"
12 ft lbs.
zero
.001"
to .008"
Camaro
Pos.
1/2° £ 1/2°
Pos.
1/4° ±1/2°
8 3/4° ± 1/2°
1/8" to 1/4"
12 ft lbs.
zero
.001"
to .008"
•Must not vary more than 1/2° from side to side.
@Toe-In (Total) should be 5/16" to 7/16" after rebuild using new bushings and ball joints.
tAdjust Toe-in with steering gear on straight ahead location after camber and caster have been set Any change
in caster and camber settings will affect toe; always recheck and set toe to specifications.
LET CHASSIS SERVICE MANUAL