key CHEVROLET CAMARO 1967 1.G Chassis Workshop Manual

SECTION O

INFORMATION AND LUBRICATION

CONTENTS OF THIS SECTION

Page

General Information o-l

Lubrication 0-13

GENERAL INFORMATION

Model Identification and Vehicle Dimensions

Chevrolet

Chevelle

Chevy n

Corvette

Camaro
Page

0-1

0-1

0-2

0-2

0-3

0-3
Page

Unit and Serial Numbers o-3

Engine Number o-3

Vehicle Serial Number 0r3

Keys and Locks 0-4

Pushing,Towing and Lifting 0-7

Series

Biscayne

Bel Air

Tmpala.

Impala

Super Sport

Caprice
MODEL IDENTIFICATION-CHEVROLET

Model Number

6-Cyl

15311

15369

15335

15511,

15569

15535

15545

16387

16367

16369

16339

16335

16345

16787

16767

—

—

—

—
V-8

15411

15469

15435

15611

15669

15635

15645

16487

16467

16469

16439

16435

16445

16887

16867

16647

16639

16635

16645
Description

2-Door Sedan, 6-Passenger

4-Door Sedan, 6-Passenger

4-Door Station Wagon, 2-Seat

2-Door Sedan, 6-Passenger

4-Door Sedan, 6-Passenger

4-Door Station Wagon, 2-Seat

4-Door Station Wagon, 3-Seat

2-Door Sport Coupe, 5-Passenger

2-Door Convertible, 5-Passenger

4-Door Sedan, 6-Passenger

4-Door Sport Sedan, 6-Passenger

4-Door Station Wagon, 2-Seat

4-Door Station Wagon, 3-Seat

2-Door Sport Coupe, 4-Passenger

2-Door Convertible, 4-Passenger

2-Door Custom Coupe, 5-Passenger*

4-Door Custpm Sedan, 6-Passenger

4-Door Custom Wagon, 2-Seat

4-Door Custom Wagon, 3-Seat

*4-Passenger when optional bucket front seats are specified.

VEHICLE DIMENSIONS-CHEVROLET

Pertinent dimensions for the different models are shown in the following chart.

Model

Length Overall . .

Width Overall (Body)

Height Overall

Wheelbase

Tread-Front

Tread-Rear

Curb Weight: Approximately 3543 lbs.
Sedan

213.2"

79.6"

55.4"

119.0"

62.5"

62.4"

4-Door Sedan with
2-Door

Sport Coupe

213.2"

79.6"

54.4"

119.0"

62.5"

62.4"

L-6 Engine; 3685 lbs
Convertible

Coupe

213.2"

79.6"

55.3"

119.0"

62.5"

62.4"

. with V-8 Engine.
Station

Wagon

212.4"

79.6"

56.7"

119.0"

63.5"

63.4"

CHEVROLET CHASSIS SERVICE MANUAL

GENERAL INFORMATION 0-4

Fig.
1—Vehicle
Serial Number

Located on Left Front Hinge

Pillar—Chevrolet Shown
Fig.
2—Vehicle Serial Number and

Body Style, Body Number Trim and

Paint Combination Located on

Instrument Panel Brace

Under Glove Box—Corvette
Fig. 3—Four and Six Cylinder

Engine Unit Number Located on

Pad at Right Hand Side of Cylinder

Block at Rear of Distributor

Fig.
4—Eight Cylinder Engine Unit

Number Located on Pad at Front,

Right Hand Side of Cylinder Block
Fig.
5—Rear Axle Unit Number

Located Bottom Surface of Carrier

at Cover Mounting Flange—Corvette
Fig.
6—Rear Axle Unit Number

Located on Right or Left Axle

Tube Adjacent to Carrier

BSHfi^;^
PAINT

HRIKI5"tM>
fIHIsS
HE|St.>MfT*

^^ * *•'"
•<"'

Fig.
7—Body Style, Body Number

Trim Type and Paint Combination

Located on Upper Right Hand Side

of the Dash Panel—Chevrol et
Fig.
8—Body Style, Body Number

Trim Type and Paint Combination

Located on the Upper Left Hand

Side of the Dash Panel—Chevelle

and Camaro
Fig.
9—Body Style, Body Number

Trim Type and Paint Combination

Located on the Upper Right Hand

Part of the Dash Panel—Chevy II

1. Manufacturers identity number assigned to all

Chevrolet built vehicles.

2.
See Model Identification in this section.

3.
Last number of model year (1967).

4.
F-Flint

5.
Unit numbering will start at 100,001 at all plants.

KEYS AND LOCKS

Four keys (two hexagonal head and two round head) are

provided with each vehicle. The hexagonal-head key

operates the ignition switch and front door locks. The
round-head key operates the locks for the glove box and

rear compartment lid.

' Lock cylinders (except trunk) are furnished for service

uncoded, this necessitates the coding of these replace-

ment lock cylinders.

NOTE: In service, the trunk and glove box

lock cylinders are provided together with the

trunk lock cylinder coded and the glove box

cylinder uncoded.

The side bar type lock (fig. 18) is used for the ignition,

front doors and trunk. The glove box lock is of the wafer

CHEVROLET CHASSIS SERVICE MANUAL

GENERAL INFORMATION 0-5

Fig.
10—Delcotron Unit

Serial Number
Fig.
11—3-4 Speed Transmission Unit

Number Located on Lower Left Side of

Case Adjacent to Rear of Cover

(Saginaw)
Fig.
12-3 Speed Borg-Warner

Transmission Unit Number Located on

Boss Right Rear Comer of Extension

Fig.
13 — 4-Speed Transmission Source

Data Code is Located on Left Side of

Case at Lower Rear of Cover Flange

(Muncie)
Fig.
14—Starter Serial Number and

Production Date Stamped on Outer

Case,
Toward Rear
Fig.
15—Powerglide Transmission Unit

Number located on Right Rear Vertical

Surface of Oil Pan

16—The Turbo Hydra-Matic Transmission Serial Number

is Located on the Light Blue Plate

Location on the Right Side of the Transmission

tumbler, single bitted type having four tumblers. To

protect owners, automobile lock manufacturers stamp

the lock numbers on the lock core, shaft, etc., where they

will not show until lock is removed.

In addition, when a lock cylinder requires replacement

the lock code number may be obtained either from the

key, if available, or from old lock cylinder which is being

replaced.
Fig.
17—Battery Code Number Located on Cell

Cover Segment, Top of Battery

TUMBLERS

5 4 3 2 1

jjwvvvvvjl

SPRING RETAINER

Fig.
18-Side Bar Lock

CHEVROLET CHASSIS SERVICE MANUAL

GENERAL INFORMATION
0-6

Once the code number of the lock is obtained look up

this number in a key cutting book.

All side bar locks (except trunk) furnished to the field

by the Parts' Department are uncoded, that is, they are

furnished without tumblers, springs or spring retainers,

these parts are serviced separately. The tumblers come

in five different depths, indicated by numbers.

The side bar locks have six tumbler positions, and in

looking up the cutting code, the following may be used as

an example. After key code number is determined, either

from key or from number stamped on lock cylinder refer

to your code book and record the key cutting information

as follows:

Key of Lock

Code Number

0V11

Cutting or Tumbler

position from head

of lock
Key Cutting

Code Numerical

545431

123456

NOTE:
Key blanks used for ignition and door

locks are stamped with an "A" while rear com-

partment and glove box blanks are stamped with

a "B".

The number that is written above the cutting or tumbler

position indicates each different tumbler which is to be

dropped into each tumbier slot of the lock.

In cases where a code book is not available, the dia-

gram shown on Figure 19 may be used to determine the

tumblers required to assemble an uncoded lock cylinder.

1.
Lay the key on the diagram (fig. 19) with bottom of

key flush with edge of the drawing, head and point

carefully lined up.

2.
Read the code in numbers 12345 from the head of the

key to the end from positions 1 to 6 inclusive. As

each depth is determined write that number in the

blank space provided above the position numbers

(1-2-3-4-5-6).

3.
With key properly lined up on diagram, all cuts that

show in the first section are marked
"1"
J

4.
Cuts that fall in the first black section, mark "2".

5. Cuts that fall in the first white section, mark "3".

6. Cuts that fall in second black section, mark "4".

7. Cuts that fall in the second white section, mark "5".

After the numbers have been determined and written

above the cutting positions the lock cylinder should be

assembled as follows.

Lock Cylinder Assembly—Refer to Figure 20

1.
Hold cylinder with head of cylinder away and starting

•... at the head of the cylinder, insert the tumblers in
their proper slots in the order called for by the

code, ribbed side toward you and long point down.

2.
After all tumblers are in place, check for correct-

ness with the code. Then press tumblers down with

one finger.

3.
Insert one tumbler spring in the space provided

above each tumbler.

CAUTION: If the springs are tangled, do not

pull them apart—unscrew them.

4.
Reverse the lock cylinder so that the head of the

cylinder is now toward you. Insert the spring re-

tainer so that one of its six prongs enters into each

of the springs and the two large end prongs slide into

the slots at either end of the cylinder. Press the

retainer down with one finger.

5. To check, insert proper key and if tumblers are in-

stalled properly the side bar will be allowed to drop

down. If bar does not drop down, remove the key,

spring retainer, springs and tumblers and reas-

semble correctly.

NOTE:
If the tumblers have not been assembled

correctly and not according to the code, the

tumblers can be removed from the cylinder by

holding it with the tumbler slots down, pulling

the side bar out with the fingers and jarring the

cylinder to shake the tumblers out. This pro-

cedure is necessary because after the tumblers

have been pressed down into the cylinder they

are held in their slots by the cross bar.

6. If after checking it is found that the lock is as-

sembled properly, remove key and place cylinder in

INSERTING

TUMBLER
CHECKING

WITH CODE

STAKING

POINTS

NSERTING

TUMBLER SPRINGS
INSERTING

SPRING RETAINER

Fig.
19—Tumbler Requirement Diagram
Fig.
20—Assembling Lock Cylinder

CHEVROLET CHASSIS SERVICE MANUAL

GENERAL INFORMATION 0-7

a vise using leather or wood on each side to prevent

damage to the cylinder,

7. Stake the retainer securely in place by staking the

cylinder metal over both edges of the retainer ends

using a suitable staking tool at right angles to the

top of the retainer and from the cast metal of the

cylinder over the retainer at each corner.

PUSHING, TOWING AND LIFTING

Pushing

NOTE:
Towing car to start is not recommended

due to the possibility of the disabled car ac-

celerating into tow car.

AUTOMATIC TRANSMISSION

Do not attempt to start the engine by pushing the car.

Should the battery become discharged, it will be neces-

sary to use an auxiliary battery with jumper cables to

start the engine.

CAUTION: To prevent damage to electrical

system, never connect booster batteries in ex-
cess of 12 volts and connect positive to positive

and negative to negative.

Manual Transmission

When a push start is necessary turn off all electrical

loads such as heater, radio, and if possible, lights, turn

on the key, depress the clutch, and place the shift lever

in high gear. Release the clutch when your speed reaches

10 to 15 miles per hour.

TOWING

The car may be towed safely on its rear wheels with

the (selector lever in "N" (Neutral) position at speeds

of 35 miles per hour or less under most conditions.

However, the drive shaft must be disconnected or the

car towed on its front wheels if 1) Tow speeds in excess

of 35 MPH are necessary, 2) Car must be towed for ex-

tended distances (over 50 miles) or, 3) Transmission is

not operating properly. If car is towed on its front

wheels, the steering wheel should be secured to maintain

a straight ahead position.

DRIVE ON HOIST

BUMPER JACK LIFTING AT FRAME ATTACHMENT ONLY

FLOOR JACK OR HOIST LIFT

Fig.
21-Vehicle Lifting Pointe-Chevroiet

CHEVROLET CHASSIS SERVICE MANUAL

FRONT SUSPENSION 3-15

4.
Insert Spring Compressor J-
6874-
4-
5 with Adapters

J-6874-8-9 into upp^r spring tower so that lower

MU"
bolt fits into shock absorber mounting holes in

spring seat (fig. 23). Secure the two lower studs to

the spring seat with nuts.

5.
Fit the tool upper pilot to top of spring and compress

spring by tightening upper nut (fig. 24). Compress

spring until screw is bottomed out.

6. Remove lower spring seat retaining nuts, lift spring

and seat assembly from control arm and guide it

down and out through fender skirt (fig. 25).

Spring Seat Replacement (Fig. 26)

1.
Release spring tension and disconnect spring com-

pressor from spring seat.

2.
Install new spring seat to spring compressor.

Installation

1.
If spring is to be replaced, install new spring into

tool and compress spring until screw is bottomed

out.

NOTE: Spring coil ends must be against spring

stops in upper and lower seats.

2.
Lift spring and tool assembly into place and position

so that the upper spring stop is inboard.

NOTE: Locating tab on upper spring seat may

be flattened before reinstalling spring.

3.
Install lower spring seat to control arm and torque

nuts as shown in the Specifications.

4.
Loosen spring compressor until spring is properly

seated in upper spring tower and remove.

5.
Install shock abosrber as outlined under Shock Ab-

sorber—Installation in this section.

Corvette

Removal

1.
With car on suitable hoist or jack, (support vehicle

by frame so control arms may swing free) remove

wheel and tire assembly, stabilizer bar and shock

absorber. Loosen the lower ball joint to steering

knuckle nut, and the' two lower control arm cross

shaft bushing bolts.

2.
Place Tool J-6874-1 across top of sixth coil (ap-

prox.),
then loosely secure Tool J-6874-2 to the up-

per shoe, with attaching capscrews and lock washers.

The upper shoe "V" notch and lower shoe raised land

should contact spring.

3.
Insert Tool J-6874 up through center of spring and

attach to upper and lower shoe assembly.

4.
Position spacers under shock absorber mounting hole

and against bottom of lower control arm. Install

special bearing washer and Tool J-6874-5. Locate

bearing against spacer and large washer against

bearing. Feed screw up through large washer bear-

ing and spacer and thread into Tool J-6874 and

tighten snugly (fig. 22).

5.
Center shoe assembly on spring and tighten screw

until a very slight compression is placed on spring

(fig. '22). Then firmly tighten down the two cap-

screws securing the upper and lower shoes to lock

these shoes to spring.

6. Turn head of screw until spring is compressed just

enough to clear the spring tower, then remove the

lower ball joint to steering knuckle nut (fig. 22).
NOTE: It may be necessary to assist the

spring out of the spring tower with a pry bar or

a similar tool.

7.
Disconnect the lower ball joint from the steering

knuckle and lower the control arm with the com-

pressed spring. Immediately release compression

on spring by backing off long screw. Release spring

and tool and withdraw spring.

CAUTION: The spring force under compres-

sion is very large. Exercise every safety pre-

caution when performing this operation to see

that individuals and materials subject to damage

are removed from the path of the spring when

the control arm is being lowered. Also, the

compressed spring
be relaxed immedi-

ately after lowering the control arm to reduce

the time of exposure to the large compressive

force.

Installation

1.
Position spring with closely coiled end up. Place

Tool J-6874-1 across the top of the sixth coil (ap-

prox.) then loosely secure Tool J-6874-2 to the

upper shoe with attaching capscrews and lock wash-

ers.
The upper shoe MV" notch and lower shoe

raised land should contact spring.

2.
Insert Tool J-6874 up through center of spring and

attach to upper and lower shoe assembly with bolt

and nut.

3.
Set spring in its seat on the lower control arm.

4.
Position spacers centrally under shock absorber

mounting hole and against bottom of lower control

arm. Install bearing, large washer and Tool

J-6874-5.
Locate bearing against spacer and large

washer against bearing. Feed the screw up through

large washer, bearing and spacer and thread into

yoke rod. Tighten snugly, but do not start to draw

down yet

5.
Center the shoe assembly on the spring and tighten

the lag screw until a very slight compression is

placed on spring, then firmly tighten down the two

capscrews securing the upper and lower shoes. This

will lock the shoes to the coil spring.

6. Turn head of screw until spring is compressed just

enough to clear the spring tower.

NOTE: It may be necessary to assist the

spring into the spring tower with a pry bar or

similar tool.

7.
Immediately install the lower ball joint into steering

knuckle and secure in place with attaching nut.

8. Release compression on spring and at the same time

use a drift to guide the coil spring into its proper

seat. End of coils must be 3/8" from coil stops in

spring seat.

9. Tighten the lower ball joint to steering knuckle nut

and lock with cotter key.

10.
Install shock absorber and stabilizer bar.

11.
Install wheel, tire and drum assembly.

12.
Remove car from hoist or jack stands.

13.
Tighten the two lower control cross shaft bushing

bolts to 45-55 lbs. ft. torque.

NOTE: If a suitable adjustable jack-stand is

CHEVROLET CHASSIS SERVICE MANUAL

ENGINE 6-19

OIL SEAL (REAR MAIN)

Replacement

The rear main bearing oil seal can be replaced (both

halves) without removal of the crankshaft.

NOTE:
Always replace the upper and lower

seal as a unit. Install with the lip facing toward

the front of the engine.

1.
With the oil pan removed, remove the rear main

bearing cap.

2.
Remove oil seal from the groove by lifting the end

tab (fig. 7L) then clean seal groove.

3.
Lubricate the lip and O.D. of a new seal with engine

oil. Keep oil off the parting line surface. Insert

seal in cap and roll it into place with finger and

thumb,
using light pressure so beads on seal O.D.

are not cut by seal groove at cap parting line. Be

sure tabs on seal are properly located in cross

grooves.

4.
To remove the upper half of the seal, use a small

hammer to tap a brass pin punch on one end of seal

until it protrudes far enough to be removed with

pliers (fig. 8L).

NOTE:
Always clean crankshaft surface re-

moving all foreign deposits before installing a

new seal. Also clean seal groove.

5. Lubricate the lip and O.D. of a new seal with engine

oil. Keep oil off the parting line surface. Gradually

push with a hammer handle, while turning crank-

shaft, until seal is rolled into place. (Similar to in-

stalling a main bearing.) Be careful that seal bead

on O.D. is not cut. Compress seal towards crank-

shaft as much as possible.

6. Install the rear main bearing cap (with new seal) and

torque to specifications. Be sure cross seal tabs

are in place and properly seated.

CRANKSHAFT PULLEY AND HUB

(Chevy II with L4 Engine)

Removal

1.
Drain radiator and disconnect upper and lower radi-

ator hoses at radiator.

2.
Remove radiator core as outlined in Section 13.

3.
Remove fan belt. Remove crankshaft pulley from

pulley hub.

4.
Install puller Tool J-6978 to pulley hub with two

3/8"
x 2" and one 5/16" x 2" bolts and remove hub

then remove puller tool.

Installation

1.
Coat oil seal contact area on hub with engine oil

position hub over crankshaft and key and start hub

into position with a mallet. Using Tool J-5590 drive

onto crankshaft until it bottoms against crankshaft

gear.

NOTE:
Crankshaft extends slightly through hub

and a tool is necessary to drive hub completely

into bottomed position.

2.
Install pulley onto hub.

NOTE:
There are two 3/8" holes and one

5/16" hole that must be matched on hub in order
Fig.
9L - Removing Torsional Damper

to properly position timing mark.

3.
Install fan belt and adjust using strand tension gauge.

4.
Install radiator as outlined in Section 13.

TORSIONAL DAMPER

Removal

1.
Remove radiator core, as outlined in Section 13.

2.
Remove fan belt and (if so equipped) accessory drive

pulley and belt.

3.
Install Tool J-6978 to damper and turn puller screw

to remove damper (fig. 9L). Remove tool.

Installation

1.
Coat front cover oil seal contact area of damper with

engine oil.

CAUTION: It is necessary to use installer

Tool J-22197 to prevent the inertia weight sec-

Fig.
10L - Installing Torsional Damper

CHEVROLET CHASSIS SERVICE MANUAL

ENGINE 6-33

Fig.
13V - Installing TorsionaI Damper (283, 327 and 350)

4.
Remove accessory drive pulley, then remove tor-

sional damper retaining bolt (if so equipped).

5. Install Tool J-6978 to torsional damper and turn

puller screw to remove damper from crankshaft

(fig. 12V).

6. Remove tool.

Installation

CAUTION: It is necessary to use installer tool

to prevent the inertia weight section from walk-

ing off the hub during installation of damper.

283, 327 and 350 cu. in. Engines

(Except 327-325 HP & 350 HP)

1.
Coat front cover seal contact area (on torsional

damper) with engine oil.

Fig.
14V - Installing Torsional Damper (396 and 427)
2.
Attach damper installer Tool J-22197 to damper.

Tighten fingers of tool to prevent weight from moving

(fig. 13V).

3.
Position damper on crankshaft and drive into position

until it bottoms against crankshaft sprocket (fig.

13V).
Remove installer tool.

4.
Install accessory drive pulley.

5. Install radiator and shroud as outlined in Section 13.

6. Install fan pulley and fan as outlined in Section 6K.

7. Install fan belt and adjust to specifications using

strand tension gauge.

8. Fill cooling system, start engine and check for leaks.

396 and 427
cu.
in.
Engines

1.
Coat front cover seal contact area (on damper) with

engine oil.

2.
Place damper in position over key on crankshaft.

3.
Using Tool J-21058 pull damper onto crankshaft

(fig. 14V).

NOTE:
If engine or radiator has not been re-

moved from the vehicle a 1/2"- 20 x 5" bolt and

a
1/2"-20
nut may be used in place of the bolt

and nut of Tool J-21058.

CAUTION: Install bolt in crankshaft with suffi-

cient thread engagement (min. 1/2").

4.
Remove tool from crankshaft.

5. Install damper retaining bolt and torque to specifica-

tions,
then install accessory drive pulley.

6. Install radiator and shroud as outlined in Section 13.

7. Install fan pulley and fan as outlined in Section 6K.

8. Install fan belt and adjust to specifications using

strand tension gauge.

9. On Corvettes, lower engine and install front mount

through-bolts.

10.
Fill cooling system, start engine and check for leaks.

327
cu.
in. (325 & 350 HP)
Engine

Install damper as outlined for 396 and 427 cu. in. en-

gines,
using a 7/16"-20 x 5" bolt and nut in place of the

bolt and nut furnished with J-21058.

CRANKCASE FRONT COVER

Removal

1.
Remove oil pan as outlined.

2.
Remove torsional damper as outlined.

3.
Remove water pump as outlined in Section 6K.

4.
Remove crankcase front cover attaching bolts and

remove front cover and gasket, then discard gasket

Installation

283, 327 and 350 cu. in.
Engine

1.
Make certain that cover mounting face and cylinder

block front face are clean and flat.

2.
Coat the oil seal with engine oil and using a new

cover gasket, coated with gasket sealer, install cover

and gasket over dowel pins and cylinder block.

3.
Install cover screws and torque bolts to

specifications.

4.
Install water pump as outlined in Section 6K.

5. Install torsional damper as outlined.

6. Install oil pan as outlined.

CHEVROLET CHASSIS SOVKZ MANUAL

ENGINE-ELECTRICAL 6Y-7

CHARGING SYSTEM

INDEX

Page

General Description . 6Y-7

Maintenance and Adjustments 6Y-9

Static Checks . 6Y-10

System Condition Check and Voltage

•Regular Adjustment. 6Y-10

General Output 6Y-11

Generator Diode and Field Test 6Y-12

Indicator Lamp-Initial Field Excitation

Circuit Tests . 6Y-12
Page

Field Circuit Resistance Wire Tests 6Y-13

Field Relay Test and Adjustment 6Y-14

Other Harness Checks 6Y-14

Service Operations 6Y-14

Generator 6Y-14

Removal and Installation 6Y-14

Pulley Replacement. 6Y-14

Brush Replacement (6" Delcotron). 6Y-15

Double Contact Regulator . . . . . . 6Y-16

GENERAL DESCRIPTION

The charging system includes the battery, generator,

regulator, telltale light, and necessary wiring to connect

these components. The Delcotron is offered as standard

equipment, although there are various capacities avail-

able on all models.

The Delcotron continuous output A.C. generator (fig.

lc) consists of two major parts, a stator and a rotor. The

stator is composed of a large number of windings as-

sembled on the inside of a laminated core that is attached

to the generator frame. The rotor revolves within the

stator on bearings located in each end frame. Two

brushes are required to carry current through the two

slip rings to the field coils wound concentric with the

shaft of the rotor. Six rectifier diodes are mounted in the

slip ring end frame and are joined to the stator windings

at three internally located terminals.

Diodes are mounted in heat sinks to provide adequate

heat dissipation. The six diodes replace the separately
mounted rectifier as used in other types of application.

The diodes change the Delcotron A.C. current to D.C.

current.

Two regulators (fig. 2c) are available on the 1967 vehi-

cles,
a double contact two unit type and a transistor

regulator. The function of these regulators in the charg-

ing system is to limit the generator voltage to a pre-set

value by controlling the generator field current. Both

regulators have an internal field relay unit. The relay

unit allows the telltale lamp to light (as a bulb check)

with the ignition key on and engine not running. When the

engine is started and the generator begins to charge, the

indicator light goes out indicating that the system is op-

erating normally.

The double contact regulator, when used with the

special 63 amp air conditioning model generator (4 ohm

field coil) uses a field discharge diode internally in the

field circuit (figs. 3c and 4c). The added diode adapts the

BRUSH AND

TERMINAL

ASSEMBLY

SLIP RINGS
SLIP RING

END FRAME

_\

THRU

BOLT
DRIVE END

FRAME

BEARING

BEARING

DIODES

ROTOR

5.5" SERIES ID DELCOTRON
STATOR

ASSEMBLY
GREASE

RESERVOIR

BRUSH

FAN ASSEMBLY

6.2" SERIES 2D TYPE 150 DELCOTRON

Fig.
lc—Delcotron Cross-section View

CHEVROLET CHASSIS SERVICE MANUAL

ENGINE-ELECTRICAL 6Y-29

each capacitor (not illustrated). The capacitor is

shorted if both readings are zero.

6. Resistor Rl: The resistor is open if both readings

are infinite.

7. Resistor R2: Use an ohmmeter scale on which the

1800 ohm value is within, or nearly within, the

middle third of the scale. If both readings are infi-

nite, the resistor is open.

8. Resistor R3: Use an ohmmeter scale on which the

680 Ohm value is within, or nearly within, the middle

third of the scale. If both readings are infinite, the

resistor is open.

9. Resistor R4: Select an ohmmeter scale on which the

15000 ohm value is within, or nearly .within, the

middle third of the scale. If either reading is infi-

nite, the resistor is open. ~

10.
Resistor R5: Use the lowest range ohmmeter scale.

The resistor is open if either reading is infinite.

NOTE:
This resistor on some applications may

be located in the vehicle wiring harness, and not

on the panel board.

11.
Resistor R6: An ohmmeter scale on which the 150

ohm value is within or nearly within, the middle

third of the scale should be used. If both readings

are infinite, the resistor is open.

REASSEMBLY

During assembly, coat with silicone grease both sides

of the flat insulators used between the transistors and

heat sink, and also the heat sink on the side on which the

transistors are mounted. The silicone grease, which is

available commercially, conducts heat and thereby pro-

vides better cooling.'

IGNITION PULSE AMPLIFIER

R-5

C-3 Ju

MAGNETIC PULSE

DISTRIBUTOR
IGNITION SWITCH REPLACEMENT (Figs.
21
i to 23i)

CHEVROLET, CHEVY II AND CORVETTE

1.
Raise hood and disconnect battery ground cable from

battery.

2.
Remove lock cylinder by positioning switch in "off"

position and inserting wire in small hole in cylinder

face. Push in on wire to depress plunger and con-

tinue to turn key counter-clockwise until lock cylin-

der can be removed.

3.
Remove the metal ignition switch nut from the pas-

senger side of the dash using Tool J-7607 (Fig. 21i).

4.
Pull the ignition switch out from under the dash and

remove the wiring connectors.

5. To remove the "theft resistant" connector, the

switch must be out from under the dash as outlined

in Step 4. Using a screw driver unsnap the locking

tangs on the connector from their position on the

switch as shown in Figure 22i. Unplug the connector.

6. Snap the connector into place on a new ignition

switch.

7. Place the switch into position from behind the dash

and install the metal ignition switch nut.

8. Install the lock cylinder.

9. Install the battery cable to the battery and lower the

hood.

CHEVELLE

1.
Disconnect battery ground cable.

2.
Remove ash tray, retainer attaching screws and

retainer.

3.
Remove A/C distributor duct retaining screws and

duct.

Fig.
19i—Pulse Amplifier Internal Circuitry
Fig.
20i—Transistor Checking

CHEVROLET Oi