1967 CHEVROLET CAMARO clutch

CLUTCH AND TRANSMISSIONS 7-22

Fig.
2X - Shift Linkage (Chevy II)

3.
Install Reverse Rod (J) with Retainer on Lever (N).

4.
With two Jam Nuts and Swivel loose on Rod (J) insert

and attach Swivel with Retainer to Lever (E).

5. Maintaining Lever (E) against Locating Gauge (B)

while holding Swivel run front Jam Nut against Swivel

then tighten rear Jam Nut against Swivel to specified

torque.

6. Install Rod (O) with Retainer on Lever (M)o

7. With two Jam Nuts and Swivel loose on Rod (O) insert

and attach Swivel with Retainer to Lever (C).

8. Repeat Step 5 Maintaining Lever (C) against Locating

Gauge (B).

9. Install Rod (K) with Retainer on Lever (L).

10.
With two Jam Nuts and Swivel retain to Lever (D).

11.
Repeat Step 5 maintaining Lever (D) against Locating

Gauge (B).

12.
Remove Locating Gauge and check shift to insure

proper operation. Readjust if necessary.

N

<

^ ii

K
3 A
1-2 DETENT

CAM
PIVOT PIN

DETENT

SPRING
3-4 DETENT

CAM

3-4

SHIFT FORK

1-2 SHIFTER

SHAFT ASSY.

REVERSE

SHIFTER SHAFT

ASSY.

3-4 SHIFTER

SHAFT ASSY.

DETENT SPRING

RETAINER

& BALL (UNDERNEATH) 1-2 SHIFTER R,NG

FORK

Fig.
3X - Comoro and Corvette Shift Linkage
Fig.
4X - Transmission Side Cover/ Shift Fork and Detent Assembly

TRANSMISSION SIDE COVER

Removal

1.
Disconnect control rods from levers.

2.
Shift transmission into neutral detent positions be-

fore removing cover.

3.
Remove cover assembly from transmission case

carefully and allow to drain.

Disassembly (Fig. 4X)

1.
Remove the outer shifter levers.

2.
Remove both shift forks from shifter shaft assem-

blies.
Remove all three shifter shaft assemblies

from cover. "O" ring seals around shifter shaft

may now be pryed out if required because of damage.

Remove reverse shifter shaft detent ball and spring,

3.
Remove detent cam spring and pivot retainer "C"

ring. Mark to identify for reassembly, then remove

both detent cams.

4.
Replace damaged parts.

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH
AND
TRANSMISSIONS
7-23

Assembly (Fig.
4X)

1.
With detent spring tang projecting
up
over
the 3rd

and
4th
shifter shaft cover opening install
the
first

and second detent
cam
onto
the
detent
cam
pivot
pin.

With
the
detent spring tang projecting
up
over
the

first
and
second shifter shaft cover hole install
the

3rd
and 4th
detent
cam,

NOTE:
The 1-2
detent
cam has a
.090" greater

contour
on the
inside detent notch.

2.

3.
Install detent
cam
retaining
"C"
ring
to
pivot shaft,

and hook spring into detent
cam
notches.

Install
1-2 and 3-4
shifter shaft assemblies
in
cover

being careful
not to
damage seals. Install both shift

forks
to
shifter shaft assemblies, lifting
up on
detent
cam
to
allow forks
to
fully seat into position.

4.
Install reverse detent ball
and
spring
to
cover, then

install reverse shifter shaft assembly
to
cover.

5.
Install outer shifter levers, flat washers, lock wash-

ers
and
bolts.

Installation

1.
Shift shifter levers into neutral detent (center) posi-

tion. Position cover gasket
on
case.

2.
Carefully position side cover into place making sure

the shift forks
are
aligned with their respective

mainshaft clutch sliding sleeves.

Install cover attaching bolts
and
tighten evenly
to

specified torque.

Remove filler plug
and add
lubricant specified
in

Section
0, to
level
of
filler plug hole.
3.

4.

ALUMINUM POWERGLIDE

INDEX

Page

General
Description
7-23

Maintenance
and
Adjustments .............. 7—23

Oil
Level Check
7-23

Periodic
Oil
Change
7-24

Periodic
Low
Band Adjustment
7-24

Manual
Shift Linkage Check
and
Adjust
7-24

Floor
Shift Linkage
7-25

Floor
Mounted Control Lever
and

Bracket
Assembly
7-29

Throttle
Valve Linkage
.... 7-29

Neutral
Safety Switch
.. . 7-30

Throttle
Return Check Valve (Dashpot)
7-30

Component
Parts Replacement
7-30

Transmission
Replacement .............. 7—30
Page

Other
Service Operations
7-32

Diagnosis
7-32

Warming
Up
Transmission
7-32

Shop
Warm
Up , 7-32

Road
Warm
Up 7-32

Checking
Fluid Level
and
Condition
7-32

Manual
Linkage
7-32

Oil
Leaks
7-33

Basic
Pressure Checks
7-33

Wide
Open Throttle Upshift Pressure Check
.... 7-33

Idle
Pressure
in
Drive Range
7-33

Manual
"Low"
Range Pressure Check .......
7-33

Drive
Range Overrun (Coast) Pressure
.
.......
7-33

Powerglide
Shift Points
. . 7-35

GENERAL DESCRIPTION

The case
and
converter housing
of the two
speed alumi-

num Powerglide Transmission
is a
single case aluminum

unit. When
the
manual control
is
placed
in the
drive
po-

sition,
the
transmission automatically shifts
to low
gear

for initial vehicle movement.
As the car
gains speed
and

depending
on
load
and
throttle position,
an
automatic shift

is made
to
high gear.
A
forced downshift feature
pro-

vides
a
passing gear
by
returning
the
transmission
to low

range.

The
oil
pump assembly
is a
conventional gear type
and

the
oil
pump housing
is of the
large diameter type acting

as
the
front bulkhead
of the
transmission.
The
torque

converter
is a
conventional three element welded design

bolted
to the
engine flywheel which drives through
a
two-

speed planetary gearset.
The
high clutch assembly
is

typical
of the
designs used
in
this type transmission.
The

aluminum Powerglide uses
an
output shaft mounted
gov-
ernor which requires
a
hole through
the
output shaft.
The

reverse clutch assembly
is a
multiple disc type clutch.

The steel plates
are
splined directly
to the
case while
the

face plates
are
splined
to the
internal
or
ring gear.
The

clutch piston operates within
the
rear portion
of the
case.

The internal diameter
of the
pistoh
is
sealed to
an
integral

hub portion
of the
case rear bulkhead.
The
outside
dia-

meter
is
sealed
to a
machined portion
of the
case.
The

piston
is
hydraulically applied
and is
released
by
separate

coil springs.
The
valve body assembly
is
bolted
to the

bottom
of the
transmission case
and is
accessible
for

service
by
removing
the oil pan
assembly.
The
valve

body consists
of an
upper
and
lower body located
on
either

side
of a
transfer plate.
The
vacuum modulator
is lo-

cated
on the
left rear face
of the
transmission case.
The

modulator valve bore
is
located
in the
upper valve body.

MAINTENANCE
AND
ADJUSTMENTS

OIL LEVEL CHECK

The transmission
oil
level should
be
checked period-

ically
as
recommended
in
Section
0. Oil
should
be
added

only when level
is on or
below
the
"ADD" mark
on the dip

stick with
oil hot or at
operating temperature.
The oil

level
dip
stick
is
located
at the
right rear
of the
engine
compartment. Fill with
oil
specified
in
Section
0.

In order
to
check
oil
level accurately,
the
engine should

be idled with
the
transmission
oil hot and the
control

lever
in
neutral (N) position.

It
is
important that
the oil
level
be
maintained
no

higher than
the
"FULL" mark
on the
transmission
oil

level gauge.
DO NOT
OVERFILL,
for
when
the oil
level

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS 7-24

is at the full mark on the dip stick, it is just slightly be-

low the planetary gear unit. If additional oil is added,

bringing the oil level above the full mark, the planetary

unit will run in the oil, foaming and aerating the oil. This

aerated oil carried through the various oil pressure pas-

sages (low servo, reverse servo, clutch apply, converter,

etc.) may cause malfunction of the transmission assem-

bly, resulting in cavitation noise in the converter and

improper band or clutch application. Overheating may

also occur.

If the transmission is found consistently low on oil, a

thorough inspection should be made to find and correct

all external oil leaks.

PERIODIC OIL CHANGE

The transmission oil should be changed periodically as

recommended in Section 0, and whenever transmission is

to be removed from the vehicle for repairs.

1.
Run engine for one minute in neutral prior to chang-

ing.

2.
Be sure vehicle is level or raise from the rear only.

3.
Remove the oil pan drain plug and allow oil to drain

thoroughly into a pan or can.

Replace drain plug and refill with approximately two

quarts of oil specified in Section 0.

NOTE: To refill the transmission, remove dip

stick from oil filler tube and refill transmission

with oil specified in Section 0 using filler tube

and funnel J-4264. Then, after shifting into all

ranges at idle speed to fill all oil passages, the

engine should be run at 800-1000 rpm with the

transmission in Neutral until the oil warms up,

then add oil as required to raise the fluid level

to the full mark on the dip stick. Refill capacity

is approximately 2 qts.
4.

Fig.
1PG - Adjusting Low Band Using J-21848
PERIODIC LOW BAND ADJUSTMENT (Fig. 1PG)

Low band adjustment should be periodically performed

at 12,000 mile intervals, or sooner, as necessary if op-

erating performance indicates low band slippage.

1.
Raise vehicle and place selector lever in neutral.

2.
Remove protective cap from transmission adjusting

screw.

3.
a. On Corvette Models: Drop left exhaust pipe for

clearance.

b.
On Chevelle Models: To gain clearance between

underbody and transmission, it may be necessary

to remove rear mount bolts from crossmember,

and move transmission slightly toward passenger

side of vehicle. .

4.
Loosen adjusting screw lock nut 1/4 turn and hold in

this position with wrench.

5.
Using Special Tool J-21848 adjust band to 70 in. lbs.

and back off four (4) complete turns for a band which

has been in operation for 6,000 miles or more,.or

three (3) turns for one in use less than 6,000 miles.

CAUTION: Be sure to hold the adjusting screw

lock nut at 1/4 turn loose with a wrench during"

the.adjusting procedure.

6. Tighten the adjusting screw lock nut to specified

torque.

CAUTION: The amount of back-off is not an

approximate figure, it must be exact.

MANUAL SHIFT LINKAGE CHECK & ADJUST

(Column Type)

1.
The shift tube and lever assembly must be free in the

mast jacket. See Section 9 for alignment of steering

column assembly if necessary.

2.
To check for proper shift linkage adjustment, lift

the transmission selector lever towards the steering

wheel. Allow the selector lever to be positioned in

drive (D) by the transmission detent.

NOTE: Do not use the indicator pointer as a

reference to position the selected lever. When

performing linkage adjustment, pointer is ad-

justed last.

3.
Release the selector lever. The lever should be in-

hibited from engaging low range unless the lever is

lifted.

4.
Lift the selector lever towards the steering wheel,

and allow the lever to be positioned in neutral (N) by

the transmission detent.

5.
Release the selector lever. The lever should now

be inhibited from engaging reverse range unless the

lever is lifted.

6. A properly adjusted linkage will prevent the selector

lever from moving beyond both the neutral detent, and

the drive detent unless the lever is lifted to pass

over the mechanical stop in the steering column.

7.
In the event that an adjustment is required, place

the selector lever in drive (D) position as determined

by the transmission detent. See Steps 2 and 3.

8. Loosen the adjustment swivel at the cross-shaft,

and rotate the transmission lever so that it contacts

the drive stop in the steering column.

9. Tighten the swivel and recheck the adjustment. See

2 and 6.

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS 7-25

Fig.
2PG - Chevrolet Shift Linkage Adjustments

10.

11.
Readjust indicator needle if necessary to agree with

the transmission detent positions. See Section 9.

Readjust neutral safety switch if necessary to pro-

vide the correct relationship to the transmission

detent positions. See Section 12.

CAUTION: Any inaccuracies in the above ad-

justment may result in premature failure of the

transmission due to operation without controls

in full detent. Such operation results in reduced

oil pressure and in turn partial engagement of

the affected clutches. Partial
of the

clutches with sufficient pressure to cause ap-

parent normal operation of the vehicle will

result in failure of the clutches or other in-

ternal parts after only a few miles of operation.

Floor Shift Linkage

Chevrolet Linkage Adjustment (Fig. 6PG)

1.
Loosely assemble Nuts (A) and (B) on Lower Rod (C).

2.
Set Transmission Lever (D) in drive position.
NOTE:
Obtain drive position by moving Trans-

mission Lever counter-clockwise to low detent,

then clockwise one detent position to drive.

3.
Set Control Pawl Lever Rod (E) in Neutral or drive

notch of Detent (F). See View A.

4.
Apply load in direction of Arrow (Y) on Actuating

Lever (G) until pawl Rod comes in contact with

Detent at Contact Point (Z). See View A.

5. Place a 7/64" Spacer (H) between Nut (A) and Swivel

(J),
run Nut (A) until it touches spacer. Remove

Spacer and apply load in the direction on Arrow (X)

until it touches Nut (A). Tighten Nut (B) against

Swivel and lock Swivel between Nuts (A) and (B).

See View B.

Chevelle Linkage Adjustment (Fig. 7PG)

1.
Assemble Nuts (A) and (B) on Lower Rod (C) loosely.

2.
Set Transmission Lever (D) in drive position.

NOTE:
Obrain drive position by moving Trans-

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH
AND
TRANSMISSIONS
7-26

TUBE
&
LEVER
ASM (B)

SELECTOR

PLATE

TRANSMISSION

LEVER
(A)
TUBE
B
LEVER
(B)

VIEW B
BRACKET
ROD
(C)

VIEW A

Fig.
3PG - Chevelle Shift Linkage Adjustments

BUSHING
VIEW
A

NUT{D)
ROD{C)

VIEWD

1.00MIN.

NOTE:
DIMENSION MUST
BE

MAINTAINED
WITH
TRANS.

IN"NEUTRAL" POSITION.
TUBE
&
LEVER ASM (&}

VIEWB

Fig.
4PG - Chevy II Shift Linkage Adjustments

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS 7-27

Fig.
5PG - Camaro Shift Linkage Adjustment

mission Lever counter-clockwise to low detent

then clockwise one detent position to drive.

3.
Set Control Pawl Lever

drive notch of Detent (F).
Rod (E) in the neutral or

See View A.

4.
Apply load in direction of Arrow (Y) on Actuating

Lever (G) until pawl Rod comes in contact with

Detent at Contact Point (Z). See View A.

5. Place 7/64" Spacer (H) between Nut (A) and Swivel

(J),
run Nut (A) until it touches Spacer. Remove

Spacer and apply load in the direction of Arrow (X)

until it touches Nut (A). Tighten Nut (B) against

Swivel and lock Swivel between Nuts (A) and (B).

See View B.

The foregoing procedure will provide a 3/32"

over travel gap in the notches of Detent (F).

Chevy II Linkage Adjustment (Fig. 8PG)

1.
Assemble Nuts (D) and (E) on Rod (C) loosely.

2.
Set Transmission Control Actuating Lever (F) in

drive position.

3.
Set Control Pawl Lever Rod (J) in the neutral and

drive notch of Detent (K). See View B.

4.
Apply load in direction of Arrow (H) on Actuating

Lever (F) until Pawl Rod comes in contact with De-

tent (K) at Contact Point (G). See View B.
5. Place .090" Spacer between Nut (E) and Swivel, run

Nut (E) until it touches Spacer. Remove Spacer and

apply load in the direction of Arrow (G) until it

touches Nut (E). Tighten Nut (D) against Swivel and

lock Swivel between Nuts (E) and (D).

The foregoing procedure will provide a .070" over

travel gap in the notches of Detent (K).

Camaro Linkage Adjustment (Fig. 9PG)

1.
Loosely assemble nuts (A) and (B) on Lower Rod (C).

2.
Set Transmission Lever (D) in "DRIVE" position.

NOTE:
Obtain "DRIVE" position by moving

Trans. Lever Counter clockwise to "LOW" de-

tent, then clockwise one detent position to

"DRIVE."

3.
Set Control Pawl Rod (E) in the "NEUTRAL or

DRIVE" notch of Detent (F). See View A.

4.
Apply load in direction of Arrow (Y) on Actuating

Lever (G) until pawl Rod comes in contact with

Detent at Contact Point (Z). See View A and B.

5. Place a .094" Spacer (H) between Nut (A) and Swivel

(J),
run Nut (A) until it touches Spacer. Tighten Nut

(B) against Swivel and lock Swivel between Nuts (A)

and (B). See View B.

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS
7-28

.PAWL
ROD (E)

DETENT
(F)

LOAD(Y)

NUT (A)

Fig.
6PG
-
Chevrolet Floor Shift Linkage Adjustment

DRIVE

POSITION

// CONTACT

POINT
Z

v ACTUATING
4./
VIEW
A

\ LEVER
G
ACTUATING LEVER (F)

LOAD{G)
1

ROD
(QSyYi-LOAD
(H)

NUT (D)
/tl—SPACER

/Hh-09

SWIVEL'

VIEW
A

#^
POINT
OF
V

CONTACT
(G)\\

A

DETENT (K)H^

¥
VUULPAWL

VIEW
B

y DETENT (K)

Fig.
7PG
-
Chevelle Floor Shift Linkage Adjustment

Fig.
SPG
-
Chevy
II
Floor Shift Linkage Adjustment

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS 7-29

ROD
(E)~X\

or

POINT OF-i-7V

CONTACT
i

(2)
-

VIEW

^ROD
(C

LLEVER
r-D

I

j

.——j

A

{

(D)
ETENT

FWD.

B
\_
(?) LOAD (X)

SWIVEL (J)-\

ROD(CK V

NUT (B)-—-^

SPACER
(H)-^
K

/ / n

/LOAD (Y)

I^-NUT
(A)

k-.O94

/^A
VIEWB

L-DETENT
(F)

AQUATING LEVER

-PART
OF
LEVER
&
(G)

BRKT. ASM.

Fig.
10PG - Corvette Gear Shift Control Adjustment

Fig.
9PG - Comoro Floor Shift Linkage Adjustment

The foregoing procedure will provide a .050" over

travel gap in the notches of Detent (F).

Corvette Linkage Adjustment (Fig. 10PG)

1.
Set Transmission Bell Crank (E) in "PARK" position.

2.
Set Control Shaft Lever (A) in "PARK" position.

3.
Install Clevis (D) on Rod (B) loosely, attach Rod to

Bell Crank (E) and secure with retainer.

4.
With Lever (A) in "PARK'? position, adjust Clevis

at Lever (A) until clevis pin passes freely through

holes and secure with washer and cotter pin.

5. Check shifts to insure proper operation. Readjust

Clevis as necessary.

Corvette Powerglide Control Lever

and Bracket Assembly

Powerglide control lever and bracket assembly is a

straight line shift type, mounted to the floor of the body

rather than the transmission extension as in the past.

Shifting from one detent position to another is done by

depressing a round button located in the center of the

spherical' shift lever knob. If disassembly of this control

lever and bracket assembly is necessary, refer to Figure

11PG for parts breakdown and relative positioning for

assembly.

Floor Mounted Control Lever

and Bracket Assembly (Exc. Corvette)

If disassembly of this control lever and bracket as-

sembly is necessary, refer to Figure 12PG for parts

break down and relative positioning for assembly.
Throttle Valve Linkage Adjustment

L-4 and L-6 Models

With accelerator pedal depressed, Bell Crank on L-4

and L-6 models must be at wide open throttle position.

Dash Lever must be 1/64"-1/16" off Lever Stop and

Transmission Lever must be against transmission in-

ternal stop.

Fig.
11PG - Corvette Control Lever and

Bracket Assembly - Exploded

CHEVtOLET CHASSIS SERVICE