1967 CHEVROLET CAMARO transmission

REAR SUSPENSION
AND
DRIVE LINE
4-38

•"•f •--..—-.>•,«.-. ^

Fig. 99—Heavy-Duty Propeller Shaft Cross-Section

(Saginaw Design)'

in
the
propeller shaft yokes. Conventional snap rings are

used
as
one method—these units can be disassembled and

reassembled using
the
same trunnions
if
desired.
How-

ever, the alternate method
of
retaining the trunnions does

not permit reusing
the
trunnions once they have been
pressed from the yokes. These trunnions are retained by

nylon material which
is
injected through
a
small hole
in

the yoke and into
the
annular grooves between the trun-

nion and yoke.

COMPONENT PARTS REPLACEMENT

PROPELLER SHAFT (DANA)

Removal

1.
Raise vehicle, mark relationship
of
shaft
to com-

panion flange and disconnect the rear universal joint

by removing trunnion bearing "U" bolts
(fig. 101).

Tape bearing cups
to
trunnion
to
prevent dropping

and loss of bearing rollers.

NOTE:
On
Corvette models, remove trunnion

"U"
bolts at transmission yoke also.

2.
Withdraw propeller shaft front yoke from transmis-

sion
by
moving shaft rearward, passing
it
under the

axle housing. Watch
for oil
leakage from transmis-

sion output shaft housing.

Repairs

NOTE:
The
universal joints
(fig. 102) are of
Fig.
101—
Removing Propeller Shaft from Companion Flange

the extended-life design
and do not
require

periodic inspection or lubrication; however, when

Fig.
100—Propeller Shaft Sleeve
and
Damper Assembly
Fig. 102—Propeller Shaft Trunnion (Dana Design)

CHEVROLET CHASSIS SERVICE MANUAL

REAR SUSPENSION AND DRIVE LINE 4-39

Fig.
103—Removing Bearing Caps

these joints are disassembled, repack bearings

and lubricate reservoir at end of trunnions with

high-melting point wheel bearing lubricant and

replace the dust seals.

1.
Remove bearing lock rings from trunnion yoke.

2.
Support trunnion yoke on a piece of 1-1/4" I.D. pipe

on an arbor bed.

NOTE:
Due to length of the propeller shaft it

may be more convenient to use a bench vise,

for removal and installation, instead of an arbor

press.
In this case, proceed with disassembly

and assembly procedure as with an arbor press.

3.
Using a suitable socket or rod, press trunnion down

far enough to drive bearing cup from yoke (fig. 103).

4.
Remove dust seals from trunnion, clean and inspect

bearing rollers and trunnion. Relubricate bearings

with a lithium base chassis lubricant.

NOTE:
In addition to packing the bearings,

make sure that the lubricant reservoir at the

end of each trunnion is completely filled with

lubricant. In filling these reservoirs, pack lu-

bricant into the hole so as to fill from the

bottom. This will prevent air pockets and ensure

an adequate supply of lubricant.

5. Place new dust seals on trunnions - cavity of seal

toward end of trunnion - then position Tool J-21548
over end of trunnion and into cavity portion of seal.

Press seal onto trunnion until tool bottoms against

trunnion (fig. 104). .

NOTE:
Installation of seal is critical to proper

sealing - use specified tool during installation to

prevent seal distortion and to assure proper

seating of seal on trunnion.

6. Partially install one bearing cup into yoke. Place

trunnion in yoke and into bearing cup. Install other

bearing cup and press both bearing cups into yoke

(fig. 105) being careful to keep trunnion aligned in

bearing cups.

7. Press bearing cups far enough to install lock rings,

and install lock rings.

Installation

1.
Inspect yoke seal in the transmission and replace, if

necessary, as described in the transmission section.

2.
Insert propeller shaft front yoke into transmission.

NOTE:
On Corvette models, install front yoke

into transmission then position propeller shaft

between yoke and companion flange; install "U"

bolts to front yoke.

3.
Align propeller shaft with companion flange, using

reference marks established in "Removal" pro-

cedure, connect the rear universal joint by installing

"U"
bolt clamps over bearing trunnions - torque

nuts to specifications.

Fig.
104—"U" Joint Trunnion Seal installation
Fig.
105—Installing Bearing Cup and Trunnion

CHEVROLET CHASSIS SERVICE MANUAL

REAR SUSPENSION AND DRIVE LINE 4-40

Fig.
106—Removing Propeller Shaft from Companion Flange

PROPELLER SHAFT (SAGINAW)

Removal

1.
Raise vehicle sufficiently to permit access to propel-

ler shaft and mark relationship of rear yoke to

companion flange.

2.
Remove trunnion bearing retaining strap attaching

screws from both bearings (fig. 106).

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

dislodge bearing caps from trunnion, and tape bear-

ing caps to trunnion.

4.
Withdraw propeller shaft front yoke from transmis-

.sion by moving shaft rearward, passing it under the

axle housing. Watch for oil leakage from transmis-

sion output shaft housing.

Repairs

NOTE:
Because of the elastic properties of the

nylon retainers, the trunnions must be pressed

from the yokes. Pressing the trunnions from the

yokes will shear the retainers which renders

the bearing caps unsuitable for reuse. A service

Jdt, which employs a snap ring to retain the

trunnion, must be used when reassembling the

propeller shaft (fig. 107).

1.
Remove trunnion at differential end of propeller shaft

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

using the following procedure:

a. Support trunnion on a press bed so that the

propeller shaft yoke can be moved downward.

Support front of propeller shaft so that shaft is

in a horizontal position.

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

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

bearing from yoke (fig. 108).

c. Apply force on yoke around bearing until nylon

retainer breaks. Continue to apply force until the

downward movement of the yoke forces the bear-

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

d. Complete removal of bearing by tapping around

circumference of exposed portion with a small

hammer (fig. 110).

e. Rotate propeller shaft so that opposite bearing

-may be removed in the manner described above.

f. Remove trunnion from yoke.

Remove trunnion at transmission end of propeller

shaft using the following procedure:

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

of the propeller shaft on a stand so that shaft is

horizontal. Be sure that weight is evenly dis-

tributed on each side of the splined yoke and that

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

move downward.

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

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

bearing from yoke (fig. 108).

c. Apply force on yoke around bearing until nylon

retainer breaks. Continue to apply force until the

downward movement of the yoke forces the bear-

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

d. Complete removal of bearing by tapping around

circumference of exposed portion with a small

hammer (fig. 110).

e. Rotate propeller shaft so that opposite bearing

may be removed in the manner described above.

f. Remove splined yoke and trunnion from propeller

shaft.

CHEVROLET CHASSIS SERVICE MANUAL

REAR SUSPENSION AND DRIVE LINE 4-41

Fig.
109—Bearing Partially Pressed from Propeller Shaft

g. Support exposed trunnion fingers on press bed and

press splined yoke from bearing caps using

method described above,

h. Remove trunnion from splined yoke.

3.
Install trunnion and bearing assembly to the propel-

ler shaft yokes using the,following procedure:

NOTE:
The trunnion and bearing assembly used

at the differential end of the propeller shaft

incorporates two different size bearing caps.

The larger bearing caps (with the annular

grooves) must be mated with the propeller shaft

yoke.

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

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

to tap the bearing into position. Check bearing

cap during installation to ensure that it does not

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

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

c. Firmly seat trunnion into bearing cup and press

bearing cup into yoke until it is flush with yoke.

d. Install opposite bearing cap and seal making sure

that rollers do not become jammed on trunnion.

Check for free movement of trunnion in yoke.

e. Install bearing retainer snap rings making sure

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

Installation

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

place if necessary as described in the transmission

section.

2.
Insert propeller shaft front yoke into transmission

extension, making sure that output shaft splines

mate with propeller shaft yoke splines.

3.
Align propeller shaft with companion flange using

reference marks established in "Removal" pro-

cedure; remove tape used to retain trunnion bearing

caps;
connect exposed bearing caps to companion

flange by installing retaining strap and screws—

torque screws to specifications.

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

CHEVROLET CHASSIS SERVICE MANUAL

BRAKES 5-15

Brake Shoes

Refer to parking brake shoe service procedures under

Disc Brakes in this section.

BRAKE PEDAL (Fig. 26)

Removal

NOTE: Refer to Section 1A for removal

air conditioning components if necessary.
of

1.

5.

b.

c.
Disconnect clutch pedal return spring (manual trans-

mission models only).

Disconnect clutch push rod at pedal.

Disconnect brake pedal return spring (Chevelle and

Camaro only).

Disconnect brake pedal from main cylinder push

rod by removing retainer and clevis pin.

Corvette only:

a. Remove steering column from vehicle as outlined

in Section 9.

Support main cylinder frdm inside engine com-

partment and remove four support brace nuts.

Remove four nuts and bolts securing support

plate to bracket and remove support plate.

d. Remove two screws securing bracket to under-

side of instrument panel and lower bracket and

pedals to floor.

Remove retainer from right side of pedal pivot

shaft.

7.
Slide clutch pedal assembly to the left and remove

from support brace.

8. Withdraw brake pedal and all nylon bushings.

Inspection

1.
Clean all metal parts with a good nontoxic cleaning

solvent.

2.
Wipe nylon bushings clean with a clean cloth.
6
CAUTION: Nylon bushings should not be treated

with cleaning agent of any nature.

3.
Inspect all nylon bushings for wear and damage.

4.
Inspect mating surface of bushings for wear and

damage—replace parts as required.

Installation

1.
Lubricate and install nylon bushings on pedal pivot

shaft, right side of support brace cutout, and through

both ends of brake pedal bore.

2.
Chevrolet, Chevy n, and Corvette: Position brake

pedal return spring on pedal arm and place pedal

assembly in support brace. Index return spring in

support brace cutout.

3.
Chevelle and Camaro: Place pedal assembly in

support brace.

4.
Slide pedal pivot shaft through support brace and

brake pedal bore.

5.
Install retainer to right side of pedal pivot shaft.

6. Corvette only:

a. Install bracket with pedal assemblies to underside

of instrument panel with two screws.

b.
Install support plate on bracket with four bolts

and nuts. • • ' •

c. Place main cylinder in position and install four

bracket and cylinder mounting bolts; secure en-

tire assembly with four nuts.

d. Install steering column in vehicle as outlined

in Section 9.

7.
Chevelle and Camaro: Install brake pedal return

spring.

8. On manual transmission models, connect clutch pedal

push rod to pedal bracket and install retainer. In-

stall clutch pedal return spring.

9. Adjust brake pedal free travel as outlined in this

section. Adjust stoplight switch as outlined in Section

CHEVROLET

CHEVELLE

Fig.
26—Brake Pedal Installation

CHEVROLET CHASSIS SERVICE MANUAL

ENGINE 6-6

CHOKE VALVE

COMPLETELY

CLOSED

PULL UPWARD ON

ROD TO END OF

TRAVEL

BEND ROD

TO ADJUST
ROD IN BOTTOM

OF SLOT

BOTTOM OF

ROD SHOULD

EVENWITH

TOP OF

HOLE
CHOKE VALVE

CLOSED

BOTTOM OF

ROD SHOULD

BE EVEN WITH

TOP OF HOLE

TOP OF ROD

SHOULD BE EVEN

WITH BOTTOM

OF HOLE (CHOKE

CLOSED)

^..BEND ROD TO

ADJUST

_PULL DOWNWARD

ON ROD TO CON-

TACT STOP

L6 (TYPICAL)

V8 327-275 HP

V8 350-295 HP
BEND ROI

TO ADJUST

PULL UPWARD ON

ROD TO CONTACT

STOP ON BRACKET

ALL V8 (EXCEPT 327-275 HP

AND 350-295 HP)

Fig.
11 - Remote Choke Adjustment

sequence outlined on Torque Sequence Chart. A slight

leak at the intake manifold destroys engine performance

and economy.

Service Fuel Lines and Fuel Filter

1.
Inspect fuel lines for kinks, bends or leaks and cor-

rect any defects found, • • •

2.
Inspect filter and replace if plugged.

NOTE:
If a complaint of poor high speed per-

formance exists on the vehicle, fuel pump tests

described in Section 6M should be performed.

Service Cooling System

1.
Inspect cooling system for leaks, weak hoses, loose

hose clamps and correct coolant level, and service

as required.

NOTE:
A cooling system pressure test, as de-

scribed in "Additional Checks and Adjustments"

in this section, may be performed to detect

internal or external leaks within the cooling

system.

Check and Adjust Accelerator Linkage

1.
Disconnect accelerator rod at carburetor throttle

lever.

2.
Hold carburetor throttle lever in wide position.

3.
Pull accelerator rod to wide open position. (On ve-

hicles equipped with automatic transmission, pull

through detent).

4.
Adjust accelerator rod to freely enter hole in carbu-

retor throttle lever.'

NOTE:
Accelerator linkage is outlined in de-

tail in Section 6M.
5. Connect accelerator rod at throttle lever.

Service Crankcase Ventilation (Fig. 10}

All engines have either "Positive" or "Closed Positive"

ventilation systems utilizing manifold vacuum to draw

fumes and contaminating vapors into the combustion

chamber where they are burned. Since it affects every

part of the engine, crankcase ventilation is an important

function and should be understood and serviced properly.

In both "Positive" and "Closed Positive" ventilation,

air is drawn through the engine, (through a regulating

valve) into the manifold, drawing' crankcase vapors and

fumes with it to be burned. "Positive" ventilation uses a

vented-meshed cap for clean air intake to the engine,

while . "Closed Positive" ventilation system draws the

clean air from the carburetor air cleaner and has a

nonvented oil filler cap.

1.
Ventilation valve may be checked as outlined under

"Additional Checks and Adjustments".

2.
Inspect for deteriorated or plugged hoses.

3.
Inspect all hose connections.

4.
On closed positive ventilation systems, remove flame

arrestor and wash in solvent then dry with com-

pressed air.

Service Air Injection Reactor System

Inspect air injection reactor system for evidence of

leaks,
deteriorated hoses, cracked air manifolds or tubes

and loose hose clamps. Inspect air injection pump belt

condition and tension. Make all necessary repairs as

outlined in "Section 6T".

Because of the relationship between "Engine Tune Up"

and "Unburned Exhaust Gases", the condition of Engine

CHEVROLET CHASSIS SERVICE MANUAL

ENGINE
6-8

Check
and
Adjust Ignition Timing
(Fig. 13)

1.
Disconnect
the
distributor spark advance hose
and

plug
the
vacuum source opening.

2.
Start engine
and run at
idle speed
(see
tune
up
chart).

3.
Aim
timing light
at
timing
tab.

NOTE:
- The
markings
on the
tabs
are in 2°

increments
(the
greatest number
of
markings
on

the
"A"
side
of the "O"). the "O"
markings
is

TDC
of
#1 cylinder
and all
BTDC settings fall
on

the
"A"
(advance) side
of "O".

4.
Adjust
the
timing
by
loosening
the
distributor clamp

and
,
rotating
the
distributor body
as
required, then

tighten
the
clamp.

5.
Stop engine
and
remove timing light
and
reconnect

the spark advance hose.

Adjust Idle Speed
and
Mixture
(Fig. 14)
(Except when

equipped with
Air
Injection Reactor System)

1.
As a
preliminary adjustment, turn idle mixture

screws lightly
to
seat
and
back
out 2
turns.

CAUTION:
Do not
turn idle mixture screw

tightly against seat
or
damage
may
result.

2.
With engine running
at
operating temperature (choke

wide open) adjust idle speed screw
to
bring idle

speed
to
specified
rpm
(automatic transmission
in
drive, manual transmission
in
neutral).

3.
Adjust idle mixture screw
to
obtain highest steady

idle speed
(1/4
turn
out
from lean roll).

4.
Repeat Steps
2 and 3 as
needed
for
final adjustment.

5.
Shut down
the
engine, remove gauges
and
install
air

cleaner.

Adjust Idle Speed
and
Mixture
(Fig. 14)
(With
Air

Injection Reactor System)

The recommended adjustment procedure
for Air
Injec-

tion Reactor System equipped engines
is as
follows:

1.
As a
preliminary adjustment, turn idle mixture

screws lightly
to
seat
and
than back
out 3
turns.

CAUTION:
Do not
turn idle mixture screw

tightly against seat
or
damage
may
result.

2.
With engine running
at
operating temperature, choke

wide open,
and
parking brake applied, adjust idle

specified idle speed (automatic

"drive"-manual transmission
in
to

in
screw

transmission

"neutral").

;3.
Adjust idle mixture screw (turn
in) to
"lean roll"

position; then turn screw
out 1/4
turn
(1/4
turn rich

from "lean roll").
The
definition
of
"lean roll" point

is
a 20 to 30 rpm
drop
in
engine speed, obtained
by

leaning
the
idle mixture.

4.
Repeat Steps
2 and 3 as
needed
for
final adjustments.

ADDITIONAL CHECKS
AND
ADJUSTMENTS

Testing Crankcase Ventilation Valve
(Fig. 15) 0

1.
Connect tachometer
and
vacuum gauge
as for
idle

speed
and
mixture adjustment.

2.
Set
parking brake, start engine
and
adjust idle speed

and mixture.

3.
Disconnect ventilation hose
at
valve, block opening
of

valve
and
read engine
rpm
change.

4.
A
change
of
less than
50 rpm
indicates
a
plugged

ventilation valve
-
replace
the
valve.

Cylinder Balance Test
(Fig. 16)

It
is
often difficult
to
locate
a
weak cylinder.
A com-

pression test,
for
example, will
not
locate
a
leaky intake

manifold,
a
valve
not
opening properly
due to a
worn

camshaft,
or a
defective spark plug.

With
the
cylinder balance test,
the
power output
of one

cylinder
may be
checked against another, using
a set of

grounding leads. When
the
power output
of
each cylinder

is
not
equal,
the
engine will lose power
and run
roughly.

Perform
a
cylinder balance test
as
follows:

1.
Connect
the
tachometer
and
vacuum gauge.

2.
Start engine
and run at 1500 rpm.

3.
Ground large clip
of
grounding leads
and
connect
in-

dividual leads
to all
spark plugs except
the
pair being

tested.

Divide
the
firing order
in
half
and
arrange
one
half

over
the
other.
The
cylinders
to be
tested together
ap-

pear
one
over
the
other.

L4 Firing Order
V8 Firing Order

1-8-4-3-6-5-7-2

1-6, 8-5, 4-7, 3-2

1-3-4-2
= 1-3

4-2

L6 Firing Order

1-5-3-6-2-4
=
=
1-4. 3-2

1-5-3

6-2-4
1-6, 5-2, 3-4
1-8-4-3

6-5-7-2

4.
Operate engine
on
each pair
of
cylinders
in
turn
and

note engine
rpm and
manifold vacuum
for
each pair.

A variation
of
more than
1
inch
of
vacuum
or 40 rpm

between pairs
of
cylinders being tested indicates that

the cylinders
are off
balance.

Battery

The battery should
be
checked with special testing

equipment
and to the
equipment manufacturers specifica-

tions.
See
Section 6Y
for
complete information
on
battery

tests.

Ignition

The following additional ignition checks
may be
made

with
any of
several pieces
of
equipment available
for un-

covering
the
source
of
engine difficulties.
The
specific

operating instructions
of the
equipment manufacturer

should
be
followed:

Cranking voltage

Ignition switch

Distributor resistance

Secondary resistance

Ignition output
and
secondary leakage

Cranking Voltage
(Fig. 17)

1.
Disconnect coil primary lead
at the
coil negative

terminal
to
prevent engine from firing during

cranking.

2.
Connect voltmeter between primary terminal
of coi|

(resistance wire side)
and
ground.

3.
Operate starting motor.

CHEVROLET CHASSIS SERVICE MANUAL

ENGINE 6-13

Fig.
1L- In
Line Engines (Typical)

NOTE:
If plug for propeller shaft open-

ing in transmission is not available, drain

transmission.

10.

11.

12.
Disconnect:

• Shift linkage at transmission.

• Speedometer cable at transmission.

On synchromesh equipped vehicles, disconnect clutch

linkage at cross-shaft then remove cross-shaft en-

gine bracket.

Remove rocker arm cover as outlined, then attach

engine lifting adapter at the proper cylinder head

bolt locations.

13.
Remove front mount through bolts.

14.
Attach lifting device and raise engine to take weight

off front mounts, then remove rear mount bolts.

15.
Raise engine to take weight off rear mount, then

remove crossmember.

NOTE:
On Chevrolet vehicles it will be neces-

sary to remove mount from transmission before

crossmember can be removed.

NOTE:
On Camaro vehicles it will be neces-

sary to remove mount from transmission and

loosen rear frame cushion bolts before cross-

member can be removed.

16.
Remove engine-transmission assembly from vehicle

as a unit.

17.
Remove transmission (and clutch):

Synchromesh Transmission

a. Remove clutch housing cover plate screws.

b.
Remove bolts attaching the clutch housing to en-

gine block then remove transmission and clutch

housing as a unit.

NOTE:
Support the transmission, as the last

mounting bolt is removed, and as it is being
pulled away from the engine (to prevent damage

to clutch disc).

c. Remove starter and clutch housing rear cover.

d. Loosen clutch mounting bolts a turn at a time (to

prevent distortion of clutch cover) until the spring

pressure is released. Remove all bolts, clutch

disc and pressure plate assembly.

Automatic Transmission

SL.
Lower engine, secured by the hoist, and support

engine on blocks.

b.
Remove starter and converter housing underpan.

c. Remove flywheel-to-converter attaching bolts.

d. Support transmission on blocks.

e. Remove transmission-to-engine mounting bolts.

f. With the hoist attached, remove blocks from the

engine only and slowly guide the engine from the

transmission.

18.
Mount engine in stand.

Installation

1.
Attach lifting device to engine and remove engine

from engine stand.

2.
Install transmission (and clutch):

Synchromesh Transmission

a. Install the clutch on flywheel as outlined in Sec-

tion 7.

b.
Install clutch housing rear cover and starter.

c. Install transmission and clutch housing as out-

lined in Section 7.

d. Install clutch housing cover screws and tighten

securely.

Automatic Transmission

a. Position engine adjacent to the transmission and

align the converter with the flywheel.

CHEVROLET CHASSIS SERVICE MANUAL