
ELECTRICAL-BODY AND CHASSIS 12-6
\ \
CHEVROLET
CHEVELLE
CHEVY II
CAMARO
Fig.
10 - Headlamp Assemblies (Exc. Corvette)
1.
2.
Remove two bolts retaining housing assembly in Corvette (Fig. 12)
bumper and remove housing.
3.
Remove lens retaining screws, lens and bulb from
housing assembly and transfer to new housing unit.
4.
Connect lamp wiring assembly to harness assembly,
housing and check operation of lamp.
5. Position lamp assembly in place and.install retaining
bolts.
Camaro (Fig. 10)
1.
Raise hood.
2.
Disconnect wiring harness at rear of lamp socket.
3.
Remove attaching nut and disconnect ground wire at
sheet metal connection.
4.
Remove retaining nuts and housing from grille
opening.
5. Transfer lens and bulb to new unit.
6. To install, position lamp housing to grille opening
and install retaining nuts.
7. Connect ground wire to attaching point and install
retaining nut.
8. Connect wiring harness to lamp socket and check
operation of lamp.
Raise hood and disconnect harness connector from
lamp unit skirt-mounted
connector;
then
remove'lamp
unit connector from underside of skirt.
Working at the forward portion of the wheel well, re-
move the two lamp assembly retaining nuts and re-
move the lamp assembly and support from the
vehicle.
Route the lamp assembly lead wires through fender
cutout and position support over lead wires.
Position lamp unit studs through support and install
retaining nuts, making sure that the studs are
horizontal.
Connect harness to lamp unit skirt-mounted connec-
tor and close vehicle hood.
FENDER LAMP SERVICE (Fig. 11)
Chevrolet 16600 Models
1.
Disconnect parking lamp wiring from forward har-
ness connector.
CHEVROLET CHASSIS SERVICE MANUAL

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

ELECTRICAL-BODY AND CHASSIS 12-41
HAZARD WARNING
SWITCHES
Fig.
55- Directional Signal Switches
erating six to eight lamps simultaneously depending ve-
hicle series and model.
DIRECTIONAL SIGNAL SWITCH REPLACEMENT
All steering columns except tilt and telescoping.
Chevrolet, Chevelle, Chevy II and Camaro (Fig. 56)
1.
Disconnect battery ground cable.
2.
Disconnect signal switch wiring from chassis har-
ness at multiple connector under instrument panel.
3.
Remove steering wheel assembly as outlined in Sec-
tion 9, Steering.
4.
Remove shift lever roll pin and shift lever from
column (if applicable).
5. Push in hazard warning switch knob and unscrew
knob.
Remove switch lever arm.
6. On Chevy U and Camaro models equipped with auto-
matic transmission remove column mounted dial in-
dicator housing and lamp assembly (if applicable).
7. Remove mast jacket lower trim cover retaining
screws and remove trim cover(s).
8. On Chevrolet and Chevelle models equipped with
automatic transmission loosen set screw and remove
quadrant dial pointer (if applicable).
9. Remove retaining
"C"
ring from upper steering shaft
using snap ring remover Tool J-22569 (Refer to
Steering, Section 9). Slide thrust and wave washers
from steering shaft.
10.
Loosen three signal switch mounting screws until
assembly can be rotated counterclockwise.
NOTE:
Do not remove three screws from as-
sembly until unit is on the bench.
11.
Rotate switch assembly counterclockwise and pull
unit from top of mast jacket. Allow unit to hang
from end of column.
Fig.
56 - Standard Steering Column
CHEVROLET CHASSIS SERVICE

ELECTRICAL-BODY AND CHASSIS 12-43
23.
Install
MCtT
ring over steering shaft using snap ring
installer J-22659 (refer to Section 9).
NOTE: Be sure retaining ring is completely
seated into groove.
24.
Install dial pointer on Chevrolet and Chevelle models
equipped with automatic transmission (if applicable).
25.
Install dial indicator and lamp assembly on Camaro
and Chevy n models equipped with automatic
transmission.
26.
Install mast jacket lower trim covers (if applicable).
27.
Install hazard warning knob and turn signal lever.
28.
Install shift lever.
29.
Install steering wheel.
30.
Install multiple connector to switch wiring using old
harness for wire color guide and connect to body
harness connector.
31.
Connect battery ground cable and check operation of
assembly.
Tilt Steering Column (Fig. 57)
Chevrolet, Chevelle and Camaro
1.
Disconnect battery ground cable.
2.
Disconnect directional switch wiring harness from
body harness at multiple connector under instrument
panel.
3.
Remove steering wheel assembly (refer to Steering,
Section 9).
4.
Remove preload spring and cancelling cam from end
of shaft.
5.
Remove shift lever pin and lever from steering col-
umn (except floor shift).
6. Remove directional le*ver screw and lever.
7.
Push in hazard warning knob and unscrew knob.
8. On Camaro models equipped with automatic trans-
mission, remove quadrant dial and lamp assembly
from column.
9. Remove mast jacket trim cover
(s).
10.
On Chevrolet and Chevelle models with automatic
transmission, loosen set screw and remove quadrant
dial pointer.
11.
Assemble slide hammer Tool J-6585-1 to turn signal
cover remover Tool J-21486. Place cover remover
over turn signal cover, tighten clamp, and pull cover
from end of column with slide hammer (Refer to
Steering, Section 9).
12.
Remove three switch mounting screws, noting short
length of top screw.
13.
Cut multiple connector from switch wiring and slide
switch from end of column.
14.
To install new switch, feed wiring through the bear-
ing housing, around support, and through shift bowl
and shroud.
15.
Feed through wiring protector. If clearance is not
sufficient loosen mast jacket bracket retaining bolts.
16.
Insert switch wiring terminals in multiple connector.
Use old connector
and
wiring for color guide.
17.
Position switch and install three mounting screws
with short screw in top position.
18.
Be sure hazard warning switch is pushed in, then
install turn signal cover using special Tool J-21853.
On automatic columns align key in cover with keyway
in bearing housing.
19.
Install turn signal lever, hazard warning knob and
tilt lever.
20.
Install shift lever and roll pin (where applicable).
21.
Install dial pointer on Chevrolet and Chevelle. On
Camaro install dial indicator and lamp assembly.
22.
Install trim covers and retaining screws.
23.
Install cancelling cam and preload spring.
24.
Install steering wheel (Refer to Section 9).
25.
Connect switch wiring to body harness under instru-
ment panel.
26.
Connect battery ground cable and check operation of
unit.
Standard and Telescoping Steering Column
Corvette (Fig. 58)
1.
Disconnect battery ground cable.
2.
Disconnect signal switch harness wiring from chas-
sis wiring harness at multiple connector under in-
strument panel.
3.
Remove steering wheel assembly as outlined in
Steering, Section 9.
4.
Remove preload spring and cancelling cam.
5.
Remove directional signal lever screw and lever.
6. Push in hazard warning knob, unscrew and remove
knob.
7.
Remove lower trim cover retaining screws and
cover.
8. Remove retaining ring, thrust and wave washers
from upper end of shaft.
9. Cut wiring above connector.
10.
Remove three switch mounting screws, slide switch,
cover and upper bearing housing from column, pull-
ing wire through protector and escutcheon.
11.
To install replacement switch, assemble upper bear-
ing housing and turn signal switch into switch cover,
then feed wiring through escutcheon and protector
until switch can be positioned on mast jacket.
12.
With switch positioned on mast jacket, install three
switch mounting screws.
13.
Install thrust and wave washers and snap lock ring
in place.
14.
Install turn signal lever and hazard warning knob.
15.
Install cancelling cam and upper bearing preload
spring on steering shaft.
16.
Install steering wheel assembly.
NOTE:
Be sure directional signal switch is in
neutral position before installing wheel.
17.
Install connector on directional signal wiring har-
ness and connect to body harness connector.
CHEVROLET CHASSIS SERVICE

ELECTRICAL-BODY
AND CHASSIS 12-48
NOTE:
Screws, nuts and lock washers for re-
assembling cover to wiper are contained in a
service repair package.
6. Remove output gear and shaft assembly, then slide
,
intermediate gear and pinion assembly off shaft.
7. If necessary, remove terminal board and park switch
assembly as follows:
a. Unsolder motor leads from terminals. Coding of
motor leads is not necessary on single-speed
wipers.
b.
Drill out rivets securing terminal board and park
switch ground strap to mounting plate.
NOTE:
Screws, nuts and washers for attaching
a replacement terminal board-park switch as-
sembly are included with the replacement
assembly.
Motor
(Fig. 65)
1.
Follow Steps 1 through 7b under gear box
disassembly.
2.
Remove, motor through bolts, tap motor frame
lightly, and remove motor from mounting plate.
3.
Remove brush spring tension (fig. 68), slide arma-
ture and end plate from motor frame. Pull end
plate from armature.
NOTE:
Thrust plug located between armature
shaft and end plate.
4.
Remove end play adjusting washers from armature,
noting arrangement for proper reinstallation.
INSPECTION
Check and inspect all parts for serviceability, replace
as necessary. All parts can be replaced individually
except motor frame and field, which is serviced as an
assembly. Service kits also provide screws, nuts and
washers to replace gear cpver and terminal board rivets.
ASSEMBLY
Refer to Figure 65 for exploded view of motor and gear
train.
Motor
Reassemble motor using reverse of disassembly
procedures.
NOTE:
Armature end play is controlled by end
play washers. See Figure 69 for proper assem-
bly of end play washers. Lubricate armature
shaft bushings with light machine oil.
Gear Box
1.
Assemble gear box using reverse of disassembly
procedure.
NOTE:
Lubricate gear teeth with Delco Cam
and Ball Bearing lubricant or equivalent. Be
sure cover is properly located over dowel pins
and be sure to reinstall ground strap.
2.
Place wiper in park position and install crank arm
on output shaft, rotate crank so alignment marks line
up with those on cover (fig. 70).
3.
Replace retaining nut, place crank arm in vise,
tighten retaining nut.
WINDSHIELD
WASHER PUMP
The windshield washer pump used on the 2-speed Type
"E"
wiper motor assembly is a positive displacement
type pump employing a small bellows, bellows spring and
valve arrangement. The pumping mechanism is actuated
by a four lobe cam and driven directly by the wiper motor
(fig. 71). Thus, when the wiper is operated, this rotor is
always turning with the gear. Programming is accom-
plished electrically and mechanically by a relay assembly
and ratchet wheel arrangement.
GEAR
CASE GROOVES
r— CRANK ARM GROOVES
WASHER PUMP
Ha
ACTUATOR
IB
•
^^HTS4LOBE
•MMBW
CAM
Fig.
70 - Wiper Crank Arm in Park Position
Fig.
71 - Wash Pump Drive Cam and Actuator
CHEVROLET
CHASSIS SERVICE MANUAL

ELECTRICAL-BODY
AND
CHASSIS
12-49
BELLOWS
AND
SPRING
HOUSING
COIL
AND
POLE
ASSEMBLY
VALVE
ASSEMBLY
RATCHET
PAWL
ASSEMBLY
RATCHET
WHEEL
ACTUATOR
PLUNGER
ARM
ACTUATOR
PIN
HOLDING CONTACTS
OPEN
RAMP TANG
PLUNGER
ARM
Fig.
73 -
Releasing
Pump from
Lockout Position
Fig.
72 -
Washer
Pump
Mechanism
REMOVAL AND INSTALLATION
Removal of the washer pump from the wiper motor
consists of:
1.
Disconnect wiring harness and washer hoses from
washer.
2.
Remove the two pump-to-wiper retaining screws and
remove washer from wiper (fig. 66).
3.
Reverse removal procedure to install assembly.
DISASSEMBLY-ASSEMBLY
Refer to Figure
1.
Remove washer pump cover.
2.
Relay
a. To remove relay unsolder coil leads from
terminals.
NOTE:
No coil polarity is necessary when re-
soldering coil leads.
b.
Remove coil retainer clip and slip coil assembly
out of mounting bracket.
3.
Ratchet Pawl
a. To remove ratchet pawl disengage spring from
ratchet pawl and slide ratchet pawl from shaft.
CAUTION: Be sure spring is properly assem-
bled before replacing washer pump cover.
Terminal Board
a. Remove terminal board attaching screws, ratchet
dog and board from washer base.
Ratchet Wheel
a. Remove lock ring from shaft.
b.
Slide ratchet wheel from shaft.
Valve Assembly
a. To remove valve assembly remove screws that
secure valve assembly to bellows housing.
CAUTION: It may be necessary to carefully
pry bellows lip out of the valve body groove.
Bellows
a. To remove bellows first remove valve assembly.
b.
Manually operate pump clockwise to release pump
from 'lock-out" position (fig, 73).
c. Hold bellows plunger arm from moving, then push
in against bottom of bellows with thumb and twist
bellows spring from housing.
Actuator Pin
a. Remove actuator pin retaining spring and slide
pin from washer base.
Reverse disassembly procedure to assemble washer.
DEPRESSED PARK 2-SPEED WIPER
CHEVROLET
GENERAL DESCRIPTION
The Type "C" two speed electric wiper assembly (fig.
74) incorporates a depressed park type (blades park
against windshield lower molding when the motor is
turned off) motor and gear train. The wiper has a com-
pound wound 12 volt motor and a gear box section con-
taining the gear mechanism and relay control. The motor
armature is fitted with a worm gear which drives the
main gear assembly and crank arm.
The relay control, consisting of a relay coil, relay
armature and switch assembly, is located in the gear box
section bid controls the starting and stopping of the wiper
through a latching mechanism (fig. 75).
An electric washer pump is mounted on the gear box
section of the wiper and is driven by the wiper unit gear
assembly (fig* 75).
The overhaul procedures for the wiper are broken down
into three major areas: The motor section, gear box
section and washer pump section. Each section maybe
serviced independently of the other.
CHEVROLET CHASSIS SEftVKX

ELECTRICAL-BODY AND CHASSIS 12-54
INNER
SPACER
WASHER
LOCK
PAWL
COIL
SPRING
DRIVE,
PAWL
DRIVE
SHAFT
AND
PLATE
ASSEMBLY
DRIVE
AND
LOCK
PAWL
GUIDE
PINS
IN
GEAR
POCKETS
7
DURING
NORMAL
OPERATION
RELAY
LATCH
ARM
IS
HELD
OUT OF
PATH
OF
GEAR
BY
RELAY
MAGNET
11.
12.
Fig. 87 - Drive Gear and Shaft Assembly
CAUTION: It may be necessary at this point to
rotate armature slightly before the armature
worm will engage with worm gear teeth.
Rotate the case as required to align the bolt holes in
the case with those in the housing.
Secure the case to the housing with the two tie bolts.
GEAR BOX SECTION
Fig. 88 - Drive and Lock Pawl Guide Pins in Pockets
(drive pawl away from latch arm, fig. 81), proceed
to Step 3.
Remove relay-switch attaching screw (fig. 80) and
carefully lift the relay-switch assembly out of the
gear box. Unsolder leads from switch terminals as
required. Refer to Figure when resoldering leads.
To remove terminal board assembly simply slide it
out of housing and unsolder leads as required.
The gear box section is subdivided into two areas, (A)
the relay control and latching mechanism and (B) the
drive gear mechanism.
A—Relay Switch and Latch Assembly-
Terminal Board Removal
1.
Remove screws retaining washer pump assembly to
wiper unit.
2.
If wiper pawl is in full park position (drive pawl lo-
cated in magnetic switch assembly slot, fig. 79), it
becomes necessary to remove gear assembly first
(see Gear Assembly Removal).
If wiper gear mechanism is not in park position
VALVE
ASSEMBLY—j
RATCHET ->Mmk
LATC
SPR
HOUT
ING
RELAY COIL
/PAWL SPRING
/ /'
^L / PAWL
|j^»i It
RATCHET
WHEEL
Fig. 89 - Washer Pump Assembly
CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY
AND
CHASSIS
12-55
COVER RELAY COIL
ASSEMBLY
PAWL SPRING
a=-
VALVE ASSEMBLY
RATCHET DOG AND _/_ f1
LATCHOUT SPRING ^—-»*
PAWL
RATCHET WHEEL
J
Fig.
SO
-
Exploded View
of
Pump
Relay Switch—Latch and Terminal Board Assembly
1.
Resolder leads
to
wiper terminal board as required
(fig. 82).
2.
Slide terminal board into wiper housing being careful
to position the terminal board resistor lead as shown
in Figure 83.
3.
Resolder leads
to
relay switch assembly
as
required
(fig. 82).
4.
Position relay-switch assembly
in
housing.
CAUTION:
Be
very careful
to
route leads
in
such
a
manner
as to
avoid having them pinched
between relay and wiper housing.
5. Install relay-switch mounting screw.
6. Assemble gear box cover and washer pump assembly
to wiper being careful that the ground strap
is
prop-
erly connected. Refer
to
Figure 75 for assembly
of
washer pump
to
gear housing.
B-Drive Gear Disassembly (Fig.
84)
1.
Remove washer pump assembly.
2.
Remove crank
arm
retaining nut, crank arm, rubber
seal
cap,
retaining ring, shim washers, shield
and
spacer washer in the order indicated.
3.
Slide gear assembly out
of
housing (fig. 85).
4.
Slide drive plate and shaft out
of
gear and remove the
drive pawl, lock pawl
and
coil spring
as
required.
Drive Gear—Assembly
1.
Position drive pawl
on
drive plate
as
shown
in
Fig.
ure 86.
2.
Assemble lock pawl over drive pawl
as
shown
in
Figure
86.
3.
Slide gear
and
tube over
the
drive shaft (fig. 87).
(Move drive and lock pawls
as
required to allow their
respective pins
to fit in the
gear guide channel,
fig.
88).
4.
Holding
the
gear, manually rotate
the
drive plate
until
the
drive
and
lock pawl guide pins snap into
their respective pockets in the gear (fig. 88).
5. Reinstall coil spring between lock
and
drive pawls
(fig. 88).
IMPORTANT: Be very careful
to
maintain lock
and drive pawl guide pins
in
their respective
pockets during Step
6.
6. Assemble inner spacer washer over gear shaft
and
assemble gear mechanism
in
housing
so
that
it is
positioned with respect to the housing in the approxi-
mate location shown
in
Figure 85.
7. Reassemble
the
outer spacer washer, shield, shim
washers
as
required
to
obtain .005"
max.
end play,
snap ring and rubber seal cap in the order indicated.
Refer to Figure 84.
8. Operate wiper
to
"park"
or
"off" position and install
crank arm.
9. Reassemble washer pump
to
wiper (fig. 75).
WASHER PUMP UNIT
The washer pump and/or valve assembly
may be re-
moved from the wiper assembly
as a
unit; therefore,
it is
not necessary
to
remove
the
wiper assembly irom
the
vehicle
if
only
the
washer pump and/or valve assembly
required service.
When
the
pump
is
removed from
the
wiper assembly,
all working parts
are
readily accessible and may easily
be serviced
as
necessary
(fig. 89).
An exploded view
of
the washer pump
is
shown in Figure 90.
Removal and Installation
1.
Raise vehicle hood.
2.
Disconnect washer hoses
and
electrical connections
from assembly.
3.
Remove
3
screws securing washer pump
and
cover
to wiper assembly. Remove pump from wiper gear
box.
4.
Position pump
and
cover assembly
to
the wiper and
install retaining screws.
5. Connect washer hoses
to
valve assembly and wiring
leads
to
pump and wiper terminals.
6. Check operation
of
unit.
CHEVROLET CHASSIS SERVICE MANUAL