1967 CHEVROLET CAMARO differential

REAR SUSPENSION AND DRIVE LINE 4-40

Fig.
106—Removing Propeller Shaft from Companion Flange

PROPELLER SHAFT (SAGINAW)

Removal

1.
Raise vehicle sufficiently to permit access to propel-

ler shaft and mark relationship of rear yoke to

companion flange.

2.
Remove trunnion bearing retaining strap attaching

screws from both bearings (fig. 106).

3.
Lower rear of propeller shaft, being careful not to

dislodge bearing caps from trunnion, and tape bear-

ing caps to trunnion.

4.
Withdraw propeller shaft front yoke from transmis-

.sion by moving shaft rearward, passing it under the

axle housing. Watch for oil leakage from transmis-

sion output shaft housing.

Repairs

NOTE:
Because of the elastic properties of the

nylon retainers, the trunnions must be pressed

from the yokes. Pressing the trunnions from the

yokes will shear the retainers which renders

the bearing caps unsuitable for reuse. A service

Jdt, which employs a snap ring to retain the

trunnion, must be used when reassembling the

propeller shaft (fig. 107).

1.
Remove trunnion at differential end of propeller shaft

Fig.
107—Service Kir Trunnion (Saginaw)
Fig.
108—Pressing Trunnion Bearing from Propeller Shaft

using the following procedure:

a. Support trunnion on a press bed so that the

propeller shaft yoke can be moved downward.

Support front of propeller shaft so that shaft is

in a horizontal position.

b.
Using a piece of pipe or similar tool, with an ins-

side diameter slightly larger than 1 1/8", press

bearing from yoke (fig. 108).

c. Apply force on yoke around bearing until nylon

retainer breaks. Continue to apply force until the

downward movement of the yoke forces the bear-

ing as far as possible from the yoke (fig. 109).

d. Complete removal of bearing by tapping around

circumference of exposed portion with a small

hammer (fig. 110).

e. Rotate propeller shaft so that opposite bearing

-may be removed in the manner described above.

f. Remove trunnion from yoke.

Remove trunnion at transmission end of propeller

shaft using the following procedure:

a. Support splined yoke on a press bed and the rear

of the propeller shaft on a stand so that shaft is

horizontal. Be sure that weight is evenly dis-

tributed on each side of the splined yoke and that

the fixed yoke half of the "U" joint is free to

move downward.

b.
Using a piece of pipe or similar tool, with an

inside diameter slightly larger than 1 1/8", press

bearing from yoke (fig. 108).

c. Apply force on yoke around bearing until nylon

retainer breaks. Continue to apply force until the

downward movement of the yoke forces the bear-

ing as far as possible from the yoke (fig. 109).

d. Complete removal of bearing by tapping around

circumference of exposed portion with a small

hammer (fig. 110).

e. Rotate propeller shaft so that opposite bearing

may be removed in the manner described above.

f. Remove splined yoke and trunnion from propeller

shaft.

CHEVROLET CHASSIS SERVICE MANUAL

REAR SUSPENSION AND DRIVE LINE 4-41

Fig.
109—Bearing Partially Pressed from Propeller Shaft

g. Support exposed trunnion fingers on press bed and

press splined yoke from bearing caps using

method described above,

h. Remove trunnion from splined yoke.

3.
Install trunnion and bearing assembly to the propel-

ler shaft yokes using the,following procedure:

NOTE:
The trunnion and bearing assembly used

at the differential end of the propeller shaft

incorporates two different size bearing caps.

The larger bearing caps (with the annular

grooves) must be mated with the propeller shaft

yoke.

a. Install bearing cap and seal about one-fourth way

in on one side of yoke, using a soft-faced hammer

to tap the bearing into position. Check bearing

cap during installation to ensure that it does not

become cocked in yoke.
Fig.
Ill—Installing Trunnion to Propeller Shaft

b.
Insert trunnion into yoke (fig. 111).

c. Firmly seat trunnion into bearing cup and press

bearing cup into yoke until it is flush with yoke.

d. Install opposite bearing cap and seal making sure

that rollers do not become jammed on trunnion.

Check for free movement of trunnion in yoke.

e. Install bearing retainer snap rings making sure

that gap in ring is toward yoke (fig. 112).

Installation

1.
Inspect yoke seal in the transmission extension, re-

place if necessary as described in the transmission

section.

2.
Insert propeller shaft front yoke into transmission

extension, making sure that output shaft splines

mate with propeller shaft yoke splines.

3.
Align propeller shaft with companion flange using

reference marks established in "Removal" pro-

cedure; remove tape used to retain trunnion bearing

caps;
connect exposed bearing caps to companion

flange by installing retaining strap and screws—

torque screws to specifications.

Fig.
110—Removing Bearing from Propeller Shaft
Fig.
112—Installing Snap Ring to Retain Trunnion

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS 7-9

6. Connect speedometer cable.

7. Install propeller shaft assembly.

8. Fill transmission with lubricant specified in Section

O.

CORVETTE TRANSMISSION REPLACEMENT

, 1. Disconnect battery ground cable.

2.
Pisassemble transmission shift control lever by un-

screwing ball from lever, lifting out
"T"
handle re-

turn spring and "T" handle, then remove the anti-

rattle bushings.

3.
Raise front and rear of vehicle.

4.
Insert a block of wood between the top of the dif-

ferential carrier housing and the underbody (to pre-

vent upward travel of the carrier when the carrier

front support is disconnected).

5. Disconnect the differential carrier front supportfrom

its frame bracket, by removing the nut on the under-

side of the biscuit mount.

6. Pry the carrier downward to relieve load while re-

moving the two center mounting bolts from the car-

rier front support. (To pry carrier downward insert

crowfoot end of a pry bar through the opening in the

carrier front support, hooking end of bar over top of

the center mounting bolt pad cast in the underside of

the carrier.)

7. Pivot carrier support downward for access to prop

shaft "U" joint.

8.
.
Disconnect prop shaft front and then rear "U" bolts.

9. Disconnect parking brake cable from ball socket at

idler lever located near center of underbody.

10.
Remove prop shaft by moving shaft forward.

11.
Remove heat deflectors from the right and left ex-

haust pipe.

12.
Remove left bank exhaust pipe.

13.
Remove right bank exhaust pipe and heat riser.

14.
Disassemble the transmission mount, as follows:

a. Remove the two bolts that attach rear mount

cushion to the rear mount bracket.

b.
Support engine under oil pan and raise engine to

remove load from rear mount cushion.
CAUTION: To avoid damage to oil pan, a suit-

able wide base, heavy wood platform should be

placed between the jack pad and the oil pan.

c. Remove the three transmission mount bracket-

to-
crossm ember bolts and remove mount bracket.

d. Remove the two bolts from mount pad to trans-

mission case and remove rubber mount cushion

and exhaust pipe "yoke".

15.
Disconnect transmission linkage by removing the

shift levers at the transmission side cover.

16.
Disconnect speedo cable at transmission extension.

17.
Remove transmission output shaft slip yoke.

NOTE:
The yoke is removed to avoid tearing

the heat reflecting pad on the underbody, when

the transmission is being removed.

18.
Remove two bolts to disconnect the transmission

gearshift control lever and bracket assembly from

its adapter plate on side of transmission. Lower

transmission assembly from the vehicle, letting the

gearshift lever slide down and through the dust boot

in the console.

19.
Remove transmission-to-clutch housing attaching

bolts.

20.
Slide transmission assembly rearward from clutch

and rotate transmission for access to the three flat

head machine screws in the control lever bracket

adapter plate. Remove adapter plate. Rotate trans-

mission back to the upright position.

21.
To allow room for transmission removal slowly

lower the rear of engine until the tachometer drive

cable at the distributor just clears the horizontal

ledge across the front of dash.

CAUTION: The tachometer cable can be easily

damaged by heavy contact with the dash. Slide

transmission rearward out of the clutch, then

tip front end of transmission downward and

lower the assembly from vehicle.

22.
Reinstall transmission assembly by performing above

steps in reverse order.

TRANSMISSION OVERDRIVE

INDEX

Page

General
Description 7-10

Maintenance
and Adjustments 7—10

Governor
Switch and Pinion .............. 7-10

Sun
Gear Solenoid Oil Seal and Control

Cable
Bracket 7-10

Case
Rear Oil Seal 7-10

Removal
7-10

Installation
. . . . . 7-10

Control
Shaft Lever and Oil Seal 7-10

Speedometer
Driven Gear 7-10

Electrical
Unit Checks 7-11

Overdrive
Relay . 7-11
Page

Air
Gap 7-11

Point
Opening 7-11

Closing
Voltage 7-11

Solenoid
. 7-11

Closing
Coil 7-11

Engaging
Spring . - 7-11

Ignition
Grounding Contact . 7-11

Governor
Switch 7-11

Kickdown
Switch 7-11

Diagnosis
- Overdrive 7-12

Mechanical
. 7-12

Electrical
7-13

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS 7-11

UPPER ARMATURE STOP

(BEND TO ADJUST POINT OPENING)

Fig.
2B-Adjusting Relay Point Opening

ELECTRICAL UNIT CHECKS

Overdrive Relay

Specifications and checking procedures for this relay

are as follows:

Specifications

Air Gap Oil inch minimum

Point Opening .025 inch

Closing Voltage
8.3-10.2
volts

Armature Sealing Voltage. ..... 11.2 volts maximum

Three checks and adjustments are required on the

overdrive relay; air gap, point opening and closing volt-

age.
The air gap contact point opening checks and adjust-

ments should be made with the battery disconnected.

Air Gap

The air gap should not normally require adjustment

unless the relay has been misadjusted. Check the air gap

with the points barely touching and adjust if necessary by

bending the lower point support (fig, IB).

Point Opening

Check the contact point opening and adjust by bending

the upper armature stop (fig. 2B).

Closing Voltage

To check the relay closing voltage, connect a potenti-

ometer or variable resistance of sufficient value (not less

than 50 ohms) in series with the "KD" terminal, connect a

voltmeter to the "IGN" and "KD" terminals. With the

ignition switch on, slowly decrease the amount of resist-

ance in order to check the relay closing voltage (the

overdrive solenoid and relay should click when the relay

closes). Adjust the closing voltage by bending the arma-

ture spring post (fig. 3B). Bend down to increase the

closing voltage and bend up to decrease the closing

voltage.

To check the sealing voltage, increase the voltage after

the relay closes until the armature seals against the

core.
Decrease the sealing voltage by reducing the relay

air gap.

Solenoid

Closing Coil

Remove solenoid from transmission, connect a jumper

wire between negative terminal of battery and mounting

flange of solenoid. Connect a second jumper wire be-
ARMATURE SPRING PQST

(BEND TO ADJUST CLOSING VOLTAGE)

Fig.
3B - Adjusting Relay Closing Voltage

tween the battery positive terminal and solenoid terminal

No.
4; this should cause the solenoid pawl to move out.

If solenoid chatters, Hold-In Coil is defective.

Engaging Spring

With jumper wire connected as in paragraph above,

(solenoid energized, plunger extended) place ball end of

solenoid against bench. Push down on solenoid. The

pawl rod should move in 3/8M under a load of not less

than 8 lbs. nor more than 12. Pawl should move out to

extended position when load is removed.

Ignition Grounding Contact

Place a test lamp between negative battery terminal

and solenoid terminal No. 6. Lamp should light when this

connection is made. Remove jumper from between nega-

tive battery terminal and solenoid terminal No. 4. Pawl

rod should snap "in" and test lamp should go out.

Governor Switch

Remove overdrive wire at governor and connect test

lamp between governor overdrive terminal and positive

terminal of battery. Drive car on road or raise on jacks.

The lamp should light at a car speed of between 26 to 30

MPH. Upon decreasing speed, the lamp should go out at

between 28 and 23.5 MPH. The car speed differential

between light "on" and light "off" should be 2 or 3 MPH.

Kickdown Switch

Disconnect the 4 wires at kickdown switch.

1.
Connect test lamp between "SW" terminal and posi-

tive terminal of battery; with switch in normal posi-

tion, lamp should light when "REL" terminal is

grounded but should not light when "IGN" or "SOL"

terminals or switch case is grounded.

2.
Connect test lamp between "IGN" terminal and posi-

tive terminal of battery; with switch stem pushed in,

lamp should light when "SOL" terminal is grounded,

but should not light when "SW" or "REL" terminals

or switch case is grounded.

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS 7-31

with the "white" stripe painted on the engine

side of the flywheel outer rim, denoting the

"heavy" side of the engine.

1.
Mount transmission on transmission lifting equip-

ment installed on jack or other lifting device.

2.
Remove converter holding tool.

CAUTION: Do not permit converter to move

forward after removal of holding tool.

3.
Raise transmission into place at rear of engine and

install transmission case to engine upper mounting

bolts,
then install remainder of the mounting*bolts.

Torque bolts to 35 ft. lbs.

4.
Remove support from beneath engine, then raise

rear of transmission to final position.

5. Through flywheel cover opening align as closely as

possible the "white" flywheel balance mark stripe

and the "blue" painted stripe on the end of converter

cover and housing. If scribed during removal, align

scribe marks on flywheel and converter cover. In-

stall converter to flywheel attaching bolts. Torque

bolts to 15-20 ft. lbs.

6. Install converter under pan.

7. Reinstall transmission support crossmember to

transmission and frame.

8. Remove transmission lift equipment.

9. Connect propeller shaft to transmissions.

10.
Connect manual and TV control lever rods to

transmission.

11.
Connect oil cooler lines (if so equipped), vacuum

Fig.
13PG - Converter Holding Tool
modulato:* line, and speedometer drive cable to

transmission.

12.
Refill transmission through filler tube, using Funnel

J-4264 and following the recommended procedure

provided earlier in this section.

13.
Check transmission for proper operation and for

leakage. Check and, if necessary, adjust linkage.

CORVETTE POWERGLIDE TRANSMISSION

Replacement

1.
Disconnect battery ground cable.

2.
Remove ball end from transmission shift control

lever.

3.
Raise front and rear of vehicle.

4.
Insert a block of wood between the top of the dif-

ferential carrier housing and the underbody (to

prevent upward travel of the carrier when the car-

rier front support is disconnected).

5. Disconnect the differential carrier front support

from its frame bracket, by removing the nut on the

underside of the biscuit mount.

6. Pry the carrier downward to relieve load while re-

moving the two center mounting bolts from the

carrier front support. (To pry carrier downward

insert crowfoot end of a pry bar**hrough the open-

ing in the carrier front support, hooking end of bar

over top of the center mounting bolt pad cast in the

underside of the carrier).

7. Pivot carrier support downward for access to prop

shaft "U"-joint.

8. Disconnect prop shaft front and then rear
"U"
bolts.

9. Disconnect parking brake cable from ball socket at

idler lever located near center of underbody.

10.
Remove prop shaft by moving shaft forward.

11.
Remove left bank exhaust pipe.

12.
Remove right bank exhaust pipe and heat riser.

13.
Disassemble the transmission mount, as follows:

a. Remove the two bolts that attach rear mount

cushion to the rear mount bracket.

b.
Support engine under oil pan and raise engine to

remove load from rear mount cushion.

CAUTION: To avoid damage to oil pan, a suit-

able wide base, heavy wood platform should be

placed between the jack pad and the oil pan.

c. Remove the three transmission mount bracket-

to-crossmember bolts, then remove mount

bracket.

d. Remove the two bolts from mount pad to trans-

mission case and remove rubber mount cushion

and exhaust pipe "yoke".

14.
Disconnect oil cooler lines at transmission and

swing lines clear.

15.
Remove connector underpan.

16.
Remove converter to flywheel attaching bolts.

17.
At transmission disconnect vacuum modulator line

and speedometer cable.

18.
Disconnect transmission shift linkage from trans-

mission gearshift control lever. Remove shift lever.

19.
At transmission, remove throttle valve linkage and

disconnect neutral safety switch linkage, also re-

move the gearshift control linkage.

20.
Remove neutral safety switch from transmission

control bracket.

CHEVROLET CHASSIS SERVICE

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 12-21

2.
Remove ash tray, retainer attaching screws and

retainer.

3.
Remove Air Conditioning distributor
duct'
retaining

screws and duct.

4.
Remove heater and/or Air Conditioning control panel

assembly retaining screws and push panel assembly

from console.

NOTE:
If interference between control panel

and radio is encountered, loosen radio retaining

nuts.

5. Remove radio control knobs, bezels and retaining

nuts.

6. Disconnect radio wiring harness and antenna lead-in.

7. Remove radio rear brace attaching screw and re-

move ra(Jio from vehicle.

8. Remove ignition switch bezel nut using Tool J-7607

and push switch rearward.

9. Disconnect cigarette wiring connector.

10.
Remove cigarette lighter retainer and lighter as-

sembly from console.

11.
To install, reverse removal procedure.
Fig.
35 - Cigarette Lighter — Chevelle

CHEVROLET INSTRUMENTS AND GAUGES

INDEX

Page

General Description 12-21

Service Operations 12-22

Instrument Cluster........................ 12-22

Instrument Cluster Lamps 12-22

Printed Circuit .
* •
12-22

Speedometer 12-22

Speedometer Cable 12-23

Fuel Gauge 12-23
Page

Clock 12-24

Tachometer 12-24

Ammeter . . 12-24

Temperature Gauge 12-24

Oil Pressure Gauge 12-24

Oil Pressure Indicator 12-24

Generator Indicator 12-26

Temperature Indicator 12-26

GENERAL DESCRIPTION

The standard instrument cluster on all models contains

seven circular housings consisting of: a speedometer;

fuel gauge; oil pressure, generator and temperature indi-

cators; right and left directional signal indicators; brake

warning and high beam indicators; and includes a clock

on deluxe models. An optionally available instrument

cluster provides special instrumentation which includes

in addition to the speedometer and clock: a tachometer;

fuel, oil pressure, ammeter and engine temperature

gauges; which replace the standard fuel gauge and indi-

cator lights. The brake warning indicator is relocated

to the tachometer dial face and the high beam and direc-

tional indicators are positioned in the speedometer dial

face.

Instrument cluster removal is recommended before at-

tempting to service the printed circuit and gauges even

though some units may be accessible from behind the

cluster. Limited working space under the instrument

panel increases the possibility of electrical malfunctions

due to poor connections, and damaged or improperly in-

stalled printed circuit. The printed circuit is service-

able but not repairable and requires complete
replacement.

The brake warning light serves a dual purpose. It

functions as an indicator when the parking brake is ap-

plied and also warns if a malfunction (loss of hydraulic

pressure) should occur in the brake system. The two

separate switches, which provide the signal to operate the

indicator, are located at the parking brake support and in

the hydraulic brake line at the master cylinder. Service

of the brake pressure, differential switch unit at the

master cylinder is described in Section 5 of this manual.

All indicator and cluster illumihating lamps may be

replaced without removing the cluster from the vehicle.

The bulbs are installed in plastic holders which lock into

the cluster housing and make contact with the printed

circuit. An instrument lamp is used to illuminate the

ignition switch. A special fibre optic lucite wiring

transmits light from the lamp to the switch.

Regular maintenance is not required on the instrument

cluster or its components other than maintaining clean,

tight electrical connections, replacing defective parts and

keeping the speedometer cable properly lubricated.

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY
AND
CHASSIS
12-26

•
Low oil
pressure

• High engine temperature

• Defective wiring
or
switch

connector from sender

in block above starter
on

and
at
left front
of
distributor
on V-8
Sending Unit Replacement

1.
Disconnect wiring harness

unit terminal (located

L-6 engines

engines).

2.
Remove sender unit using Tool J-21757
or 12
point

socket, replace with
new
unit
and
check operation.

GENERATOR INDICATOR

1.
Ignition
on,
Engine
not
Running
and
Telltale Light

Off.

• Indicator bulb burned out, replace bulb.

• Open circuit
or
loose connection
in the
telltale

light circuit.

2.
telltale Light Stays
on
after Engine
is
Started.
If indicator light does
not go out at
engine idle

speed, refer
to
Charging Systems under Engine

Electrical, Section
6Y.

TEMPERATURE (COOLING SYSTEM) INDICATOR

The temperature indicator circuit consists
of two re-

motely located units, indicator gauge
and
engine sender

unit.
The
indicator gauge, located
in the
instrument

panel, consists
of a
red light which will indicate
an
over-

heated engine condition.

Engine Sender Unit Replacement

1.
Drain engine cooling system
to a
level below unit.

2.
Remove sender unit (located
in the
inlet manifold

near water pump housing
on V-8
engines and
in the

cylinder head near
an
exhaust port
oh L-6
engines)

and replace with new unit.

3.
Refill cooling system
and
check operation
of
unit.

CHEVELLE INSTRUMENTS AND GAUGES

INDEX

Page

General Description
* *
i2-26

Service Operations
12-26

Instrument Panel
12-26

Instrument Cluster.
12-26

Fuel Gauge and/or Ammeter
12-27

Clock,
i 12-27

Speedometer
12-27
Page

Speedometer Cable
.
. 12-27

Temperature Gauge
12-29

Oil Pressure Gauge
12-29

Indicator Lights.
. 12-29

Oil Pressure Indicator
12-29

Generator Indicator
. . 12-29

• Temperature Indicator
12-29

GENERAL DESCRIPTION

The Chevelle instrument cluster assembly consists
of:

a speedometer;
a
fuel gauge;
a
generator,
an
engine
tem-

perature and an
oil
pressure indicator lamp, and includes

a clock
on
deluxe models.
On
super sport models,
am-

meter, coolant temperature
and oil
pressure gauges
re-

place
the
appropriate indicator lights. Except
for the

speedometer,
all of the
indicator lamps, instruments
and

gauges
of
these clusters may
be
serviced without remov-

ing
the
instrument cluster assembly from
the
vehicle.

In addition
to the
instrument indicator lamps,
a
brake

warning lamp
is
included
in the
cluster
as
standard

equipment.
The
indicator
is
connected
to the
parking
brake
and
brake pressure differential switches
and

serves
a
dual function.
It
lights when the parking brake

is applied
and
also when
the
brake pedal
is
applied,
if a

malfunction should occur
in the
brake system
due to a

loss
of
hydraulic pressure. Servicing
of the
hydraulic

pressure differential switch
is
covered
in
Section
5 of

this manual.

Regular maintenance
is not
required on the instrument

cjLuster
or its
components other than maintaining dean

and tight electrical connections, replacing defective parts

and keeping
the
speedometer cable properly lubricated.

SERVICE OPERATIONS

INSTRUMENT PANEL ASSEMBLY

INSTRUMENT CLUSTER (Figs.
41
thru
44)

Removal

1.
Disconnect battery ground cable.

2.
Remove steering coupling bolt and disconnect steer-

ing shaft from coupling.

3.
Loosen mast jacket lower clamp.

4.
Remove
air
conditioning center distributor duct
(if

so equipped).

5. Remove radio rear support bracket screw.

6. Remove mast jacket upper support clamp and retain-

ing bolts from lower support (refer
to
Section
9,

Steering).
CAUTION: Cover mast jacket
and
parl

brake handle with
a
suitable material
to
prevc

scratching.

7.
Disconnect speedometer cable
at
rear
of
cluster

housing
and
speed warning control knob
at
panel
(if

so equipped).

8. Remove instrument panel retaining screws (nine

upper and five lower).
.

9. Working under the console remove four lower retain-

ing screws from instrument cluster housing.

10.
Pull instrument panel assembly from console and
lay

forward on mast jacket.

11.
Disconnect wiring harness, cluster lamps and wiring

CHEVROLET CHASSIS SERVICE MANUAL