1967 CHEVROLET CAMARO ECU

ELECTRICAL-BODY AND CHASSIS 12-50

SERVICE OPERATIONS

MOTOR SECTION

DISASSEMBLY

NOTE:
Motor section
may be
disassembled

independently
of
the gear box.

Brush Plate and Circuit Breaker Removal

1.
Scribe
a
reference line along the side of the casting

and end cap to insure proper re-assembly.

2.
Remove the two motor thru bolts.

3.
Feed exposed excess length
of
motor leads thru the

casting grommet
and
carefully back
the
case
and

field assembly plus
the
armature away from
the

casting (fig. 76).

NOTE:
It may be
necessary
to
remove
the

armature end play adjusting screw and insert
a

rod thru
the
opening
in
order to apply pressure

against the end of the armature.

4.
Unsolder
the
black lead from circuit breaker
(fig.

77).

5.
Straighten
out the 4
tabs that secure the brush plate

to the field coil retainers (fig. 77).

CAUTION:
Be
careful
not to
break
any of
the

retainer tabs.

6. Install
"U"
shaped brush retainer clip over brush

holder that has brush lead attached to circuit breaker

(fig. 78).

7.
Holding
the
opposite brush from that retained in Step

6, carefully lift
the
brush holder
off the
mounting

tabs
far
enough
to
clear
the
armature commutator

(fig. 78).

8. Allow
the
brush, held
in
Step
7, to
move out
of its

holder. Remove
the
brush spring
and
lift the brush

holder
off
the armature shaft.

Armature Removal

1.
Follow Steps
1
thru
8
under brush plate removal.

2.
Lift armature out
of
case and field assembly.

3.
Remove thrust ball from
end of
armature shaft
as
PUMP

ASSEMBLY

CAM SLOT

DRIVE PLATE
AND

ASSEMBLY

RELAY SWITCH

ASSEMBLY
WASHER PUMP

DRIVE
PIN

Fig.
75
-
Wiper and Washer
Pump
Mechanism

required and save
for
reassembly.

NOTE: Thrust ball
may be
easily removed

with
a
magnet.

MOUNTING

GROMMET

WASHER PUMP COVER

RETAINING RING

STAKE MARKS -

CASE
TO
FIELD

LAMINA
(4
PLACES)

Fig. 74 - Depressed Park 2-Speed Wiper
Fig. 76 - Wiper Motor Separation

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-52

GEAR MECHANISM

NOT IN PARK

RELAY SWITCH ATTACHING SCREW

Fig.
81 -
Drive Gear not
in
Park Position

TERMINAL BOARD

1 2 3

RELAY LEADS (RED)

SOLDER TO NO. 1 TERMINAL

RELAY
COIL-RED

TAN-SOLDER TO

SAME RELAY SWITCH TERMINAL WITH RED COIL LEAD

BLACK WITH PINK STRIPE
ASSEMBLY

1.
If new field and case assembly is being installed,

splice the black and black with pink stripe leads of

the new field with the corresponding leads of the

wiper.

2.
Install the rubber thrust disc, steel thrust disc and

felt lubricating washer in the case assembly bearing

in the order indicated.

3.
Lubricate end of armature shaft that fits in case

bearing. Next, install thrust ball in end of shaft.

4.
Assemble armature in the case and field assembly.

5.
Position the partially assembled brush plate over the

armature shaft far enough to allow re-assembly of

the remaining brush in its brush holder;- then position

the brush plate assembly on the mounting tabs in the

position shown in Figure 78.

NOTE: Circuit breaker ground lead will not

reach circuit breaker terminal if brush plate is

positioned wrong.

6. Center the brush plate mounting holes over the

mounting tabs and bend the tabs toward the brush

holders as required to secure the brush plate in

position.

CAUTION: Be sure tabs are centered in brush

plate mounting holes.

7.
Remove brush retainer clips and resolder circuit

breaker ground lead to circuit breaker. Refer to

Figure

8. If new case and field assembly'is used, scribe a line

on it in the same location as the one scribed on the

old case. This will insure proper alignment of the

new case with the scribed line made on the housing

(Step
1
under Brush Plate Removal).

9. Position armature worm shaft inside the housing and,

using the scribed reference marks, line up as near

Fig.
82 - Relay Assembly Wiring
Fig.
83 -
Terminal Board Resistor

CHEVROLET CHASSIS SERVICE MANUAL

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

ELECTRICAL-BODY AND CHASSIS 12-59

NOTE: it may be necessary at this point to

rotate the armature slightly before the worm

will engage with the worm gear.

5.
Rotate the case as required to align the holes in the

case with those in the housing.

6. Being very careful not to pinch any of the motor

leads between the case and edge of the field, push the

case onto the field until it butts against the housing.

7.
Secure case to housing with two tie bolts.

8. Install end-play adjusting screws and locknut and

adjust end-play by tightening adjusting screw finger

tight; then back off screw 1/4 turn and tighten

locknut.

GEAR BOX SECTION

The gear box section is subdivided into two areas, (A)

the relay control and latching mechanism and (B) the

drive gear mechanism.

A—Relay Control and Latching Mechanism:

Disassembly

1.
Remove four screws which secure the washer pump

assembly to gear box.

2.
Refer to Figure 97. Disconnect coil spring, remove

"E"
ring and lift the latch and follower assembly off

the pivot pin and relay armature.

3.
Remove the stop assembly retaining screw. This

will permit the stop assembly to be moved as neces-

sary to allow clearance for removing the relay con-

trol assembly.
Fig.
100 - Assembly Gear and Eccentric Shaft

4.
Remove the two screws that secure the relay control

assembly.

5.
Lift the relay control assembly out of the gearbox

and unsolder leads as required.

Reassembly

1.
Solder existing green and yellow wiper leads to relay

control switch and solder the relay coil Iea4 to the

wiper unit terminal board as shown in Figure

B—Drive Gear Mechanism:

Disassembly

Refer to Figure 84 unless other wise specified.

1.
Remove the crank arm retaining nut (No. 1).

2.
Remove crank arm (No. 2), snap ring (No. 3) and

rubber seal (No. 4).

3.
Remove the retaining ring (No. 5), end play washers

(No.
6), shield (No. 7) and spacer washer (No. 8).

4.
Follow Steps 1 through 3 under relay control and

latch mechanism disassembly.

Fig.
99 - Lock and Drive Pawi Mechanism
Fig.
101 - Drive Gear Mechanism Installed

CHEVROLET CHASSIS SER\

ELECTRICAL-BODY AND CHASSIS 12-60

....
£
VALVE ASSEMBLY

mm

BROWN
*yr

RED '
WATER

INTAKE

PORT

|f|i

Wjjm WATER

|HP DISCHARGE

W PORTS

WASHER

PUMP

ASSEMBLY

Fig.
102 - Washer Pump Assembly

5. Remove gear mechanism from the gear box and slide

spacer washer (No. 9) off the gear assembly eccen-

tric shaft.

6. Slide the drive plate and shaft assembly (No.. 11) out

of the gear, assembly, remove the lock and drive

pawls (Nos. 12 and 13) and remove the coil spring

(No.
14).

Reassembly

1.
Assemble lock and drive pawls to the shaft and drive

plate assembly as shown in Figure 99.

2.
Install the assembled parts from Step 1 in the gear

and eccentric shaft as shown in Figure 100.

3.
Connect the coil tension spring between the lock and

drive pawls (fig. 100).
4.
Reinstall spacer washer on the eccentric shaft of the

gear.

5. Reinstall gear mechanism in the housing as shown in

Figure 101.

6. Reassemble the parts removed in Steps 1 through 4

under drive gear disassembly.

The washer pump and/or valve assembly (fig. 102) may

be removed from the wiper assembly as a unit; therefore

it is- not necessary to remove the. wiper assembly from

the vehicle if only the washer pump and/or valve assem-

bly requires service.

WASHER PUMP SECTION

PUMP REPLACEMENT

. To replace the washer pump assembly proceed as

follows:

1.
Raise vehicle hood and remove engine distributor

shielding and distributor cap.

2.
Remove lead wires from washer pump and disconnect

ground wire from screw retained connector; discon-

nect hoses from valve unit.

3.
Remove four screws which secure the washer pump

assembly to the gear box.

a* The water inlet and outlet valve assembly is

serviced as a unit if required; also the rotor cam

is serviced separately.

4.
Install washer pump and cover assembly so that the

slot in the washer pump cam fits over the pin on the

wiper unit drive plate.

5. Install the four washer pump to gear box retaining

screws, position ground lug under lower screw.

6. Connect valve inlet and outlet hoses, attach ground

lead and washer pump lead wires.

7. Install engine distributor cap and shielding.

8. Lower hood and check operation of wiper unit.

SPECIAL TOOLS

J-21932

BEZEL NUT REMOVER

Fig.
103 - Special Tools

CHEVROLET CHASSIS SERVICE MANUAL

SECTION 13

RADIATOR AND GRILLE

INDEX

Page Page

General Description 13-1 Repairs 13-4

Radiator and Shroud-All Vehicles (Except Corvette) . . . . 13-1 Installation 13-4

Removal 13-1 Grille Assembly - Chevy II 13-4

Installation 13-1 Removal . 13-4

Radiator and Fan Shroud - Corvette . . . . 13-1 Repairs 13-5

Fan Shroud Replacement 13-1 Installation . 13-5

Aluminum Radiator 13-1 Grille Assembly - Corvette 13-5

Copper Radiator . 13-1 Removal . . . . 13-5

Grille Assembly - Chevrolet 13-2 Installation ....*... 13-5

Removal 13-2 Grille Assembly - Caxnaro 13-5

Repairs 13-3 Removal 13-5

Installation 13-3 Repairs . 13-6

Grille Assembly - Chevelle 13-3 Installation . . 13-6

Removal 13-.Q

GENERAL DESCRIPTION

Radiator assemblies are attached by cap screws either the radiator and shroud are basically the same for each

to the radiator support or radiator shroud, depending on vehicle,

the engine installation of each vehicle. The Camaro fan

Shroud is mounted in two bottom slots and secured by one NOTE: Refer to the Fisher Body Service Man-

bolt at the top. Removal and installation procedures for ual for Body, Section IX for Sheet Metal, Section

14 for Bumpers, and Section 1A for Air Condi-

tioning information when required.

SERVICE OPERATIONS

RADIATOR
AND
SHROUD—ALL VEHICLES
NOTE: Reach upper two shroud bolts from top,

(EXCEPT CORVETTE)
between hood and radiator support. Reach lower

4 by reaching around front edge of open hood.

Removal

1.
Drain radiator. 4.- Remove shroud carefully (tilt rearward, then lift up

2.
Disconnect inlet and outlet radiator hoses, and Pow- to clear fan blades).

erglide cooler lines if vehicle is so equipped. 5. Reverse procedure to install, fill cooling system and

3.
Remove radiator and shroud attaching screws and lift check for leaks.

radiator and shroud out of vehicle.

Aluminum Radiator

Installation

NOTE:
Refer to Figures 1 through 5 for radi- Removal and Installation

ator fan and shroud assembled positions for each 1. Remove shroud as previously outlined.

vehicle. Reverse removal procedures, fill cool- 2. Disconnect lower raciiator hose at either end.

ing system and check for leaks. 3. Remove radiator upper mount bracket bolts and

bracket, then lift radiator from vehicle.

RADIATOR AND FAN SHROUD-CORVETTE 4. Reverse procedure to install.

Fan Shroud Replacement (Fig. 4) Copper Radiator

1.
Drain radiator and open hood. (Install a bolt in hole

of hood support bracket for safety purposes.) Removal and Installation

2.
Disconnect upper radiator hose and supply tank hose 1. Remove hood panel assembly after scribing bracket

at radiator connection. location.

3.
Remove shroud bolts. 2. Drain radiator and disconnect radiator hoses.

CHEVROLET CHASSIS SERVICE MANUAL

RADIATOR AND GRILLE 13-2

Fig.
1 - Radiator and Shroud - Chevrolet

3.
Remove fan.

4.
Remove bolts along top of radiator support, right and 4.

left radiator hold down clamps, and shroud center

bracket.

5. Remove horns and bolts retaining fan shroud to radi- 5.

ator support.

6. With helper, work radiator and fan shroud from vehi-

cle.

7. Reverse procedure to install. 6.

7.

GRILLE ASSEMBLY-CHEVROLET

Removal (Figs. 6 and 7)

1.
Raise hood and disconnect battery leads. 8.

2.
Remove bumper (Section 14).

3.
Remove bolts securing hood catch assembly to radi-

ator support, hood catch support and tie bar, and re- 9.
move hood catch from vehicle.

Remove screws attaching headlamp bezels to grille

reinforcements, fenders, and filler panel. Remove

bezels and headlamps from vehicle. •

Remove screws and rivits- from each fender trim

plate and remove fender trim plates with reinforce-

ments from vehicle. Refer to Figure 6 for attaching

hardware locations.

Remove rivits securing top of grille to tie bar.

Remove screw and rivits securing bottom" of grille to

filler panel and remove grille. If necessary, remove

nuts attaching name plate to grille and replace name

plate.

Remove screws attaching hood catch support to radi-

ator support and filler panel and remove catch sup-

port from vehicle. -

Remove screws attaching tie bar to fenders, radiator

CHEVROLET CHASSIS SEJMCE MANUAL