low beam CHEVROLET CAMARO 1967 1.G Chassis Workshop Manual

Page 12 of 659


GENERAL INFORMATION 0-10

THIS DIMENSION MUST NOT

BE EXCEEDED DUE TO

POSSIBLE DAMAGE TO THE

STEERING KNUCKLE LOWER

CONTROL ARM STOP.

LIFT ONLY ON THE

4"
AREA EXTENDING

REARWARD FROM

THE FRAME RAMP.

CAUTION:
CARE MUST BE USED

TO PREVENT JACK

PAD FROM DAMAGING
DO NOT LIFT ON

REAR SPRING FRONT

MOUNTING BRACKET

BUMPER JACK LIFTING AT

FRAME ATTACHMENT AREA ONLY.

FLOOR JACK OR HOIST LIFT
DRIVE ON HOIST

FLOOR JACK ONLY

Fig.
28-Vehicle Lifting Points-Chevy II

Lifting With Auto Jack

The shaded areas on both the front and the rear

bumpers, as shown in Figures 21, 22, 28, 29 are recom-

mended auto jack lifting points. The jack load rest must

locate under the bumper at these points. Be sure the

load rest is positioned properly on the jack before raising

the vehicle. On Corvettes, position jack on shaded areas

indicated on Figure 30. Be sure jack load rest properly

contacts frame before raising vehicle.

Lifting Car With Drive-on Hoist

Many dealer service facilities and service stations are

now equipped with a type of automotive hoist which must

bear upon some part of the frame in order to lift the

vehicle. In Figures 21, 22, 28, 29, 30 the shaded areas

indicate areas recommended for hoist contact.
LIFTING THE CORVETTE

Shaded, areas in Figure 30 indicate 'recommended

points for hoist or jack contact. When using a single post

hoist place hoist on frame side rail behind kickup at front

and forward of #3 body mount at rear. When using a

twin-post hoist, two methods are recommended.

a. If no rear axle or suspension work is contem-

plated, use either suspension adapters or drive-

on adapters at the front, and drive-on adapters

at the rear. If a need for axle work develops, use

jack stands beneath the frame side rails on each

side and lower rear post.

b.
If rear axle work is contemplated, use either

suspension adapters or drive-on adapters at the

front and frame lift adapters as shown in Figure

31.
If frame lift adapters are not available, use

jack stands.

NOTE:
Wooden blocks, bolted to steel beam

shown in Figure 31 are necessary to allow

beam to clear exhaust system.

CHEVROLET CHASSIS SERVICE MANUAL

Page 335 of 659


ENGINE-ELECTRICAL 6Y-10

circuit. Make absolutely certain all connections in

the circuit are secure.

5.
Do not short across or ground any of the terminals

on the generator or regulator.

6. Do not attempt to polarize the generator.

7.
Do not disconnect lead at generator without first dis-

connecting battery ground cable.

Trouble in the A.C. charging system will usually be

indicated by one or more of the following conditions:

1.
Faulty indicator lamp or ammeter operation.

2.
An undercharged battery (usually evidenced by slow

cranking speeds).

3.
An overcharged battery (usually evidenced by exces-

sive battery water usage).

4.
Excessive generator noise or vibration.

Described below are a series of on-the-vehicle quick

checks which are designed to assist the service tech-

nician in locating troubles within the various components

of the engine electrical system. Additional checks, ad-

justments and overhaul procedures of these components

are also described in the "Charging Systems—Service

Operations Section" and should be referred to as

necessary.

STATIC CHECKS

Before making any electrical checks, perform the fol-

lowing static checks:

1.
Check for loose fan belt.

2.
Check for defective battery. (Refer to Battery).

3.
Inspect all connections, including the slip-on con-

nectors at the regulator and Delcotron.

NOTE: Do not short field to ground to check if

generator is charging since this will seriously

damage the charging system.

SYSTEM CONDITION TEST

This test is used .to indicate the overall condition of the

charging system (both good and defective) and to isolate

the malfunctioning unit if the system is defective.

NOTE: On Corvette models difficulty may be

encountered -when attempting to make the re-
quired test connections at the voltage regulator.

It is advisable to remove the regulator from its

mounting location to perform the necessary con-

nections at the regulator for the following tests

but make sure unit is grounded.

1.
With ignition off, perform the prescribed Static

Checks outlined in this section. Then set hand brake

and shift transmission
into
neutral.

2.
Connect a voltmeter from junction block relay to

ground at regulator base.

CAUTION: Be sure meter clip does not touch a

resistor or terminal extension under regulator,

3.
Connect a tachometer on engine.

4.
Models equipped with Indicator Lamp: Turn ignition

switch on "ON" position and check indicator lamp.

If lamp fails to glow, perform appropriate tests and

corrections (Indicator Lamp Circuit Tests) before

continuing.

Models equipped with Ammeter: Turn ignition

switch to "ACC" with an accessory on and check

ammeter. If ammeter fails to read discharge, check

ammeter circuit before continuing.

5.
Models equipped with Indicator Lamp: If lamp glows,

start the engine and run' it at 1500 rpm or above.

Check indicator lamp. If lamp fails to go out, per-

form appropriate test and corrections (Indicator

Lamp Circuit Test) before continuing.

Models equipped with Ammeter: If ammeter reads

discharge, start the engine and observe ammeter. If

meter fails to move toward charge (from original

position), perform appropriate test and corrections

(Field Circuit Tests) before continuing.

NOTE: At this point a field circuit has been

established and any other problem will lie in

generator or regulator.

6. Turn on high-beam headlights and heater blower

motor to high speed, run engine at or above 1500

rpm (for a few minutes, if necessary) and read the

voltage on meter.

AIR GAP

ADJUSTING NUT

ONLY

ADJUSTING SCREW

(Turn To Adjust

Voltage Setting)

Fig.
6c—Adjusting Voltage Setting

CHEVROLET CHASSIS SERVICE MANUAL

Page 516 of 659


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

Page 520 of 659


ELECTRICAL-BODY AND CHASSIS 12-8

is inserted through radiator support opening.

Remove two screws retaining lamp assembly to

lower sheet metal.

Remove three screws retaining lamp assembly to

lender.

To replace lamp assembly, reverse removal proce-

dure and check operation of the unit.
is aligned with flat on pivot shaft. Install stop lock

bolt and torque bolt to 45-60 in, lbs. Make sure that

side-to-side panel alignment is not changed when in-

stalling and tightening the stop.

CAUTION: Do not exceed specified torque

when tightening stop lock bolt.

HEADLAMP PANEL REPLACEMENT-CORVETTE

Refer to Figure 13 for Panel Mounting details.

1.
Remove engine compartment hood as outlined in

Section 1.

2.
Actuate headlamp panel to the open position.

NOTE:
In the event headlamp motor is inop-

erative, manual positioning of the panel can be

accomplished by turning the knurled knob at in-

board end of motor. As an assist in manual

operation of panel, apply light hand pressure to

panel in desired direction of rotation.

3.
Remove positive lead from battery terminal.

4.
Remove headlamp bezel retaining screws and bezel.

5. Remove the sealed beam housing unit as an assem-

bly - disconnect sealed beam leads at harness con-

nector and remove connector from sealed beam

leads;
remove the housing-to-panel retaining screws

and remove housing unit and wiring from panel.

6. Remove motor from panel pivot shaft - see motor

removal procedure. Then remove the panel stop

from panel inboard pivot shaft, and disconnect switch

lead wires from panel, support-mounted motor

switch.

7. Remove the panel retaining bolt access hole plugs

from inside the panel then rotate panel as required

and remove the retaining bolts and slide supports

from ends of panel pivot shaft. Remove bearing, felt

seal, retainer and washer from inboard pivot shaft.

8. Remove panel from its location by alternately disen-

gaging pivots from their retaining slots and with-

drawing unit forward through opening in body (fig.

14).

9. Loosen alien screw in spacer and disassemble parts

from the panel outboard pivot shaft.

10.
Install washer, retainer, felt seal, bearing and

spacer, in that order, to panel outboard pivot shaft.

Do not tighten spacer on shaft at this time.

11.
Position panel in body opening and index panel pivot

shafts in retaining slots; then loosely install support

retaining bolts.

12.
Install washer, retainer, felt seal, bearing and sup-

port, in that order, to panel inboard pivot shaft, and

loosely install support retaining bolts. -

13.
Check side-to-side alignment of panel, making sure

that there is no panel-to-body contact; position

spacer snugly against bearing; then tighten spacer

seat screw to 30-50 in. lbs.

14.
Install stop on panel inboard shaft so that it rests

against bearing, being sure that index mark on stop
15.
Check and align panel to body as follows:

a. Tighten panel pivot support bolts snugly but still

allowing panel to" be moved by applying hand

pressure.

b.
Position panel to the closed position and align

with body so that all surfaces are flush.

c. With the panel in the closed position the outboard

access hole is aligned with the forward bolt head.

Tighten this bolt with the panel in the closed

position - access to bolt head can be obtained by

working through opening between the hood and

body.

d. Rotate panel to obtain access to each bolt head

and torque bolts to 100-140 in. lbs.

e. Connect switch lead wires to support-mounted

limit switch.

16.
Install seaLed beam housing unit and at the same time

position sealed beam lead wires through panel out-

board pivot shaft. Install housing unit retaining

screws and install lead wires in connector, making

sure to match colors between harness and connector.

17.
Install motor assembly - see motor replacement

procedure.

18.
Connect positive lead to battery terminal.

19.
Adjust headlamp panel as outlined under "Headlamp

Panel Travel Adjustment".

20.
Adjust headlamp aiming as outlined under "Headlamp

Adjustment".

21.
Install headlamp bezel and engine compartment

hood - refer to Section 1 for hood installation.

Fig.
14
- Headlamp Panel Removal (Corvette)

CHEVROLET CHASSIS SERVICE MANUAL

Page 547 of 659


ELECTRICAL-BODY AND CHASSIS 12-35

SERVICE OPERATIONS

INSTRUMENT CLUSTER

REMOVAL AND INSTALLATION (Fig. 49)

1.
Remove mast jacket assembly. Refer to Section 9

for removal procedures.

2.
Disconnect tachometer drive cable at distributor.

3.
Disconnect the headlamp panel control switch from

instrument cluster.

4.
Remove lighting switch as outlined in this section.

10 10-A 1112 13

14
15 16 17 18 19

Fig.
49- Instrument Cluster Connections

1.
Cluster Illuminating

Bulbs

2.
Direction Signal Indicator

Bulb L.H.

3. Direction Signal Indicator

BulbR.H.

4.
Headlamp Actuating Motor

Indicator

5. Headlamp Hi Beam

Indicator

6. Parking Brake Alarm

Indicator

7. Ground Lead Attaching

Point

8. Temperature Indicator
"1"

Terminal
9.

10.

10A.

11.

12.

13.

14.

]5.

16.

17.

18.

19.

20.

21.
Temperature Indicator "S"

Terminal

Ignition Switch Receptacle

ignition Switch Illuminating

Bulb

Oil Pressure Indicator

Tachometer

Lighter Receptacle

Trip Odometer

Wiper Switch Receptacle

Speedometer

Ammeter "Gen" Terminal

Ammeter "Battery" Terminal

Lighting Switch Receptacle

Fuel Gauge
"1"
Terminal

Fuel Gauge "S" Terminal

5. Remove the ignition switch. Refer to Section 6Y

for removal procedure. Then disconnect ignition

switch lamp support at instrument panel.

6. Disconnect oil pressure line at oil pressure gauge

then remove the lead wires from ammeter, wiper

switch and cigarette lighter. Disconnect trip odom-

eter at mast jacket support.

7. Remove the instrument cluster-to-dash retaining

screws and pull cluster assembly slightly forward

to obtain clearance for removal of speedometer

cable, tachometer cable, cluster ground wire, fuel

gauge lead wires and remaining indicator and cluster

illuminating lamps.

8. To install cluster in dash panel, reverse removal

procedure.

FUEL GAUGE

The gasoline fuel gauge circuit consists of an electri-
cal indicator in the instrument cluster and a float-

controlled rheostat in the fuel tank.

Since the fuel gauge consists of two remotely located

units and connecting wires, it is sometimes difficult to

determine which unit is at fault when the gauge fails to

operate properly. Cluster removal is necessary to re-

place the fuel gauge.

NOTE:
Be sure to check gas gauge fuse in fuse

panel before attempting to trouble shoot for

inoperative gauge or tank sending unit.

SPEEDOMETER AND/OR TACHOMETER

Removal and Installation

Cluster must be removed from vehicle to service

speedometer head assembly (see Cluster Removal pro-

cedure)
.
With cluster removed from vehicle:

1.
Remove five screws securing cluster back panel to

cluster assembly; separate the parts carefully.

CAUTION: Care must be used to avoid marring

instrument cluster face.

2.
Remove two screws securing speedometer or ta-

chometer head to cluster back panel; carefully re-

move speedometer or tachometer head.

NOTE:
Servicing of speedometer or tachom-

eter head should be performed by an authorized

AC service station.

3.
Reverse above procedure to install speedometer.

Cable Replacement or Lubrication

1.
Disconnect the. cable from the speedometer or ta-

chometer head. Remove the old cable by pulling it

out from speedometer end of conduit.

NOTE:
If old cable is broken it may be nec-

essary to remove lower piece from transmission

or distributor end of conduit as applicable.

2.
Lubricate the lower 3/4 of cable with
AC
speedom-

eter cable lubricant and push the cable into the con-

duit. Connect the upper end to the speedometer or

tachometer head and road test vehicle for proper

operation.

TEMPERATURE GAUGE

The temperature indicator requires very little service

other than testing for malfunctioning and replacing de-

fective units. Cluster must be removed to service tem-

perature gauge.

Do not attempt to repair either the engine unit or the

gauge. When installing new engine unit, do not use

thread compound on unit threads, as this will increase

electrical resistance of unit and cause faulty reading

on gauge.

AMMETER OR OIL PRESSURE GAUGE

The ammeter or oil pressure gauge requires very

little attention other than keeping ammeter terminals

clean and tight. If the oil pressure control line should

become restricted it should be blown out or replaced.

Cluster must be removed to service these gauges.

HftVKI MANUAL

Page 548 of 659


ELECTRICAL-BODY
AND
CHASSIS
12-36

CAMARO INSTRUMENTS AND GAUGES

INDEX

Page

General Description
12-36

Service Operations
12-36

Instrument Cluster
. . . 12-36

Instrument Lamps
12-36

Printed Circuit
12-36

Fuel Gauge
12-37

Tachometer
. . 12-37

Seat Separator Instrument Console
12-37
Page

Fuel Gauge
12-37

Ammeter
12-37

Temperature Gauge
12-37

Oil Pressure Gauge
. 12-37

Fuel Warning Unit
12-37

Clock.
... 12-37

Oil Pressure Indicator
12-37

Generator Indicator
12-38

Temperature Indicator
12-38

GENERAL DESCRIPTION

The standard Camaro instrument cluster assembly con-

sists
of two
circular units which house
the
speedometer

and fuel gauge assemblies.
The oil
pressure, left-hand

directional
and
brake warning indicators
are
located
in

the face
of the
speedometer bezel while generator,
tem-

perature
and
right-hand directional indicators are grouped

with
the
fuel gauge unit.
The
high beam indicator
is

located between
the
cluster bezels.

A special instrumentation package
is
available with
the

eight-cylinder engine
and
center floor console combina-

tion.
The
special cluster includes:
a
clock; coolant

temperature,
oil
pressure, fuel
and
ammeter gauges,

mounted forward
on the
seat separator console;
a ta-

chometer
in the
right circular housing
of the
dash
in-

strument cluster; and
a low
fuel level indicator replacing

the
oil
pressure indicator lamp
in the
instrument cluster.

The instruments
and
gauges,
may be
serviced only

after
the
instrument cluster
is
removed from
the
vehicle.

Indicator
and
cluster lamps except
for the
high beam

indicator
may be
replaced without removing
the
cluster

assembly. Partial cluster removal
is
necessary when

replacing
the
high beam indicator due
to its
proximity
to
the upper brace
rod
anchor plate.
The
bulbs
are in-

stalled
in
plastic sockets which lock into
the
cluster

housing and make contact with
the
printed circuit.

A
low
level fuel warning system
is a
special feature

available with
the
floor console gauge pack. This
sys-

tem includes
an
indicator lamp
in the
dash cluster and
a

semi-conductor unit senses
the
change
in
electrical
re-

sistance
of the
fuel system circuitry
as
variations
in

fuel level occur.
The
sensing device
is
replaced
as a

unit
if
found defective.

The brake warning light serves
a
dual purpose.
It

functions
as an
indicator when
the
parking brake
is ap-

plied
and
also
if
there
is a
malfunction (loss
of
hydraulic

pressure)
in the
brake system. Switches which provide

the signal
to
operate
the
light
are
located
at the
parking

brake assembly
and at the
brake master cylinder
in the

hydraulic lines. Service
of the
brake pressure differ-

ential switch unit
is
covered
in
Section
5 of
this manual.

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 properly lubricated.

SERVICE OPERATIONS

INSTRUMENT CLUSTER (Figs.
50
thru
53)

Removal
and
Installation

1.
Disconnect battery ground cable.

2.
Remove mast jacket lower support screws
at toe
pan.

3.
Remove mast jacket upper support bolts
and
allow

steering wheel
to
rest
on
seat cushion.

CAUTION: Both supports must
be
detached
to

prevent distortion
of
mast jacket.

4.
Remove cluster attaching screws from face
of
panel

and partially remove assembly from console opening.

5. Reaching behind cluster assembly, disconnect speed-

ometer cable, speed warning device
(if so
equipped
-

Fig.
51) and
chassis harness connector
at
rear
of

panel.

6. Remove assembly from console opening to
a
suitable

bench area
for
required service operations.

7.
To
install, reverse removal procedure.

INSTRUMENT CLUSTER LAMP REPLACEMENT

1.
Turn bulb holder counterclockwise
and
pull
out to

remove from
the
cluster housing.
2.
Pull bulb straight out
to
remove from socket.

3.
Press replacement bulb inward
to
lock
in
socket.

4.
Insert lamp assembly into housing, with lugs
on

holder entering notches
in
housing,
and
turn clock-

wise
to
lock
in
place.

PRINTED CIRCUIT REPLACEMENT

1.
Remove instrument cluster
as
previously described

in this section.

2.
Remove
all
cluster illuminating and indicator lamps

from housing.

3.
Remove fuel gauge terminal nuts
or
tachometer
re-

taining nuts securing printed circuit
to
housing.

4.
Remove four
hex
head screws retaining printed
cir-

cuit
to the
cluster housing
and
remove circuit from

housing.

5.
To
install, reverse removal procedure.

CAUTION:
The
retaining screws
are
part
of

the grounding circuit
and
must
be
installed
to

provide proper connections
for the
printed
eir-

cuit.

CHEVROLET CHASSIS SERVICE MANUAL

Page 652 of 659


SPECIFICATIONS 25

BODY AND CHASSIS ELECTRICAL

SECTION
12

LAMP USAGE
CANDLE

POWER
BULB

NUMBER

Headlamp Unit

Chevrolet, Chevelle & Corvette

Outer - High Beam

Outer - Low Beam

Inner -• High Beam only

Chevy H

High Beam . .

Low Beam

Parking Lamp and Directional Signal

All Exc. Camaro

Camaro

Tail, Stop and Directional Signal (Exc. Bel Air)

Backing Lamp ••...,

Instrument Illumination Lamps

Chevrolet & Camaro ,

Chevelle and Chevy n

Corvette

Temperature Indicator

Chevrolet & Camaro

Chevelle and Chevy II .............

Oil Pressure Indicator

Chevrolet & Camaro .............

Chevelle and Chevy II

Generator Indicator

Chevrolet & Camaro .

Chevelle and Chevy n ,

Hi-Beam Indicator

Chevrolet & Camaro <

Chevelle and Chevy II

Corvette , . • . ,

Directional Indicator

Chevrolet & Camaro

Chevelle & Chevy II . .

Corvette . .

Cigarette Lighter Lamp

Corvette .

Ignition Lock Lamp

Chevrolet . . .

Corvette . . .

Heater or A/C Control Panel

Chevrolet, Chevelle, Chevy n & Camaro . . .

Corvette . . .

Glove Box Lamps

Chevrolet, Chevelle, Chevy n & Camaro . . .

Corvette . . . . .

Dome and Courtesy Lamps

Cartridge Type (AU)

Bayonet Type (Exc. Corvette) . . .

Corvette ,

Convertible . .
37 1/2 Watts

55 Watts

37 1/2 Watts

55 Watts

45 Watts

4-32

4-32

4-32

Special Fiber

1

2

3

2

3

12

6

6

6
Optic
4002

4002

4001

6012

1157

1034-A

1157

1156

194

1895
.

1816

194

1895

194

1895

194

1895

194

1895

1445

194

1895

1816

1445

Wiring

1445

1895

1893

1895

1893

211

89,
212

90

631

CHEVROLET CHASSIS SERVICE MANUAL