1969 FORD MUSTANG manual transmission

07-02-19
C4 Automatic Transmission

07-02-19

Tool-T64P-7A128-A

OIL

SCREEN
LOWER

VALVE BODY

-,
-^L*«^M*if
GASKET

UPPER

VALVE BODY

D1891-A

FIG. 54—Upper and Lower Valve Bodies Disassembled
MANUAL VALVE

D1892-A

FIG. 56—Removing Manual Valve

Exert downward pressure on the tool

and turn it counterclockwise until the

insert is removed.

CONTROL VALVE BODY

Disassembly

1.
Remove the eight screws that at-

tach the oil screen to the body and re-

move the screen (Fig. 54).

2.
Remove the seven attaching

screws from the underside of the lower

valve body. Separate the lower valve

body, gasket, separator plate and

hold-down plates (Fig. 55) from the

upper valve body. Be careful not to

lose the upper valve body steel ball

shuttle valve and spring when separat-

ing the upper and lower valve bodies.

3.
Depress the manual valve detent

spring with the tool shown in Fig. 56.

Remove the spring retaining pin (roll

SEPARATOR

PLATE
pin) from the upper valve body. Re-

move the spring and detent plunger.

4.
Slide the manual valve out of the

body.

5.
Remove the cut-back and the

back-out valve cover plate from the

valve body (Fig. 57).

6. Remove the cut-back valve from

the body.

7.
Remove the 2-3 back-out valve,

spring and the manual low valve from

the body.

8. Remove the 1-2 shift valve and

2-3 shift valve cover plate from the

valve body.

9. Remove the 2-3 shift valve and

the throttle modulator valve from the

body.

10.
Remove the 1-2 shift valve, D2

valve and the spring from the body.

11.
Remove the intermediate band

accumulator valve cover plate from

the valve body.

RUBBER BALL

SHUTTLE VALVE
SERVO

CHECK VALVE

RUBBER BALL

SHUTTLE VALVE
UPPER VALVE

BODY

D 1726-A

FIG. 55—Separating Upper and Lower Valve Bodies
12.
Remove the intermediate accu-

mulator sleeve, 3-2 control valve,

spring and the intermediate servo ac-

cumulator valve.

13.
Remove the pressure booster

valve, cover plate (Fig. 57).

14.
Remove the pressure booster

valve, sleeve, springs and the main re-

gulator valve.

15.
Remove the spring and the line

pressure coasting boost valve (Fig.

57).

16.
Carefully pry the downshift

valve retainer from the body, then re-

move the spring and valve.

17.
Hold the upper valve body as

shown in Fig. 58 and depress the

throttle booster valve plug to release

the retaining pin. Remove the plug,

valve and the spring.

18.
Remove the two hold-down

plates and the separator plate from

the lower body. Be careful not to lose

the rubber ball shuttle valve when re-

moving the separator plate and gasket

from the lower valve body.

Assembly

1.
Place the rubber ball shuttle

valve in the lower body as shown in

Fig. 55. Position the separator plate

and the two hold-down plates on the

lower valve body and install the four

attaching screws and torque them to

specification.

2.
Place the throttle booster valve

spring, valve (long end into spring)

and the plug (Fig. 57). Depress the

plug and install the retaining pin.

3.
Insert the downshift valve into

the body with the large diameter fac-

ing inward. Install the downshift valve

spring and the retainer (Fig. 57).procarmanuals.com

07-02-20
C4 Automatic Transmission
07-02-20

1-2 SHIFT VALVE

SLEEVE

D2 VALVE

3-2 CONTROL VALVE

ACCUMULATOR

VALVE

UPPER BODY

MAIN REGULATOR

VALVE
2-3 BACK-OUT VALVE

CUT-BACK VALVE

2-3 SHIFT VALVE

MANUAL LOW VALVE

THROTTLE MODULATOR VALVE

THROTTLE BOOSTER VALVE

stmina—E
\

RETAINER

MANUAL VALVE DETENT

PLUG,
SPRING AND

RETAINING PIN
MANUAL VALVE

CONTROL PRESSURE

BOOSTER VALVE

AND SLEEVE

D 1727-A

FIG. 57—Upper Valve Body Disassembledprocarmanuals.com

07-02-21
C4 Automatic Transmission
07-02-21

D1893-A

FIG. 58—Removing or Installing

Throttle Booster Valve

4.
Insert the line pressure coasting

boost valve and spring in the body

(Fig. 57).

5.
Place the main regulator valve in

the body (Fig. 57) with the large di-

ameter facing inward. Install the two

springs and the pressure booster valve

and sleeve.

6. Hold the pressure booster valve

cover plate in place and install the

three attaching screws and torque

them to specification.

7.
Place the intermediate servo ac-

cummulator valve and spring in the

body. Install the interim iiate accum-

mulator sleeve and 3-2 control valve.

Secure the cover to the body with the

attaching screw. Torque the screw to

specifications.

8. Position the spring, D2 valve and

the I-2 shift valve in the body.

9. Place the throttle modulator

valve, spring, and 2-3 shift valve in the

body.

10.
Secure the 1-2 shift valve and

the 2-3 valve cover plate to the body

and torque the screws to specifica-

tions.
11.
Place the manual low valve,

spring, and the 2-3 back-out valve in

the body.

12.
Place the cut-back valve in the

body.

13.
Secure the cut-back and the

back-out cover plate to the body with

two screws. Torque the screws to

specifications.

14.
Slide the manual valve into the

body making sure that the notch for

the manual lever is toward the inside

and that the detent notches are facing

upward.

15.
Place the detent plunger and

spring in the body. Depress the spring

and install a new roll pin.

16.
Position a new rubber check

valve in the upper valve body (Fig.

55).

17.
Position the check valve and

spring in the upper valve body (Fig.

55).
Place a new gasket, the separator

plate and the lower valve body in

place on the upper valve body and se-

cure it with the seven attaching

screws. Torque the screws to specifica-

tions.

18.
Secure the oil screen to the

body with the eight attaching screws.

Torque the screws to specifications.

FRONT PUMP

Disassembly

1.
Remove the four seal rings from

stator support.

2.
Remove the five bolts that attach

the stator support to the front pump

housing. Remove the stator support

from the pump housing (Fig. 59).

3.
Remove the front and rear stator

bushings if they are worn or damaged.

Use the cape chisel (Fig. 60) and cut

along the bushing seam until the chisel
D 1731-A

FIG. 60—Removing Stator

Support Bushing

breaks through the bushing wall. Pry

the loose ends of the bushing up with

an awl and remove the bushing.

4.
Remove the drive and driven

gears from the front pump housing.

5.
Press the bushing from the front

pump housing as shown in Fig. 61.

Assembly

1.
Press a new bushing into the

pump housing with the handle and

tool shown in Fig. 61. Make sure the

bushing is installed with the slot and

groove positioned to the rear of the

pump body and 60 degrees below the

horizontal center line.

2.
Install the drive and driven gears

in the pump housing. Each gear has

an identification mark on the side of

the gear teeth that are chamfered. The

chamfered side with the identification

PUMP HOUSING

STATOR SUPPORT

FRONT PUMP SEAL
SEAL RINGS

SELECTIVE

THRUST WASHERS

GASKET

D 1894-B

59—Front Pump and Stator Support Disassembledprocarmanuals.com

07-02-22

C4 Automatic Transmission

07-02-22

Handle
Fress
Ram
ress
Ram

Hand!

Tool
-
T66L-7003-S9

Too/
-
T66L-7003-B5
INSTALL BUSHING WITH GROOVE

JAND SLOT
IN
THIS POSITION

REMOVAL

INSTALLATION

FIG. 61—Replacing Front Pump Housing Bushing
D 1732-C

mark
has to be
positioned downward

against
the
face
of the
pump housing.

3.
Press
new
bushings into
the sta-

tor support with
the
tool shown
in

Fig. 62.
Use the end
with
the 1/8
inch

step
for the
front bushing
and the end

with
the 1/4
inch step
for the
rear

bushing. When installing
the
rear

bushing,
be
sure
the
hole
in the
bush-

ing
is
lined
up
with
the
lube hole
in

the stator support.

T00I-T66L
Toot-T63L-77837-A

or 77837-A

D 1733
-
A

FIG. 62—Installing Stator

Support Bushings

Tool-T50T-100-A D1895-A

FIG. 63—Removing Front

Pump Seal
D1896-A

FIG. 64—Installing Front

Pump Seal

4.
Place
the
stator support
in the

pump housing
and
install
the
five
at-

taching bolts. Torque
the
bolts
to
spe-

cifications.

5.
Install
the
four seal rings
on the

stator support.
The two
large
oil
rings

are assembled first
in the oil
ring

grooves toward
the
front
of the
stator

support (Fig.
59).

6. Check
the
pump
for
free rotation

by placing
the
pump
on the
converter

drive
hub in its
normal running posi-

tion
and
turning
the
pump housing.

7.
If the
front pump seal must
be

replaced, mount
the
pump
in the

transmission case
and
remove
the
seal

with
the
tool shown
in Fig.
63.
To in-

stall
the new
seal,
use the
tool shown

in
Fig. 64.

REVERSE-HIGH CLUTCH

Disassembly

1.
Remove
the
pressure plate
re-

taining snap ring (Fig.
65).

2.
Remove
the
pressure plate,
and

the drive
and
driven clutch plates (Fig.

66).
If the
composition clutch plates

are
to be
reused,
do not
clean them
in

a vapor degreaser
or
with
a
detergent

solution. Wipe
the
plates with
a
lint-

free cloth.
3.
To
remove
the
piston spring
re-

tainer snap ring, place
the
clutch
hub

in
the
arbor press. With
the
tools

shown
in Fig. 67,
compress
the
piston

return springs
and
remove
the
snap

ring. When
the
arbor press
ram is re-

leased, guide
the
spring retainer
to

clear
the
snap ring groove
of the

drum.

SNAP RING

D1420-A

FIG. 65—Removing
or
Installing

Reverse-High Pressure Plate

Snap Ring

4.
Remove
the
spring retainer
and

10 piston return springs.

5.
Remove
the
piston
by
inserting

air pressure
in the
piston apply hole
of

the clutch
hub
(Fig.
68).

6. Remove
the
piston outer seal

from
the
piston
and the
piston inner

seal from
the
clutch drum (Fig.
66).

7.
Remove
the
drum bushing
if it is

worn
or
damaged.
Use
thw ^ape chisel

(Fig. 69)
and cut a
shallow groove
3/4

inch
in
length along
the
bushing seam

until
the
chisel breaks through
the

bushing wall.
Pry the
loose ends
of

the bushing
up
with
an awl and re-

move
the
bushing.
To
prevent leakageprocarmanuals.com

07-02-23
C4 Automatic Transmission
07-02-23

SNAP RING

DRIVE PLATES

REVERSE
AND
HIGH

CLUTCH CYLINDER
SPRING RETAINER

PISTON

PISTON SEALS
PISTON

RETURN SPRING

(10) SNAP RING

DRIVEN PLATES
PRESSURE PLATE

D1897-A

. oo—Reverse-High Clutch Disassembled

REVERSE-HIGH

CLUTCH DRUM

Tool T65L-77575-A

Tool T
65
L- 77575 -A

D 1591-A

FIG. 67—Removing
or
Installing Reverse-High Clutch Piston Spring

Snap Ring
Cape Chisel

D 1734-A

FIG. 69—Removing Reverse-High

Clutch Bushing

at
the
stator support O-rings,
be
care-

ful
not to
nick
or
damage
the
hub sur-

face with
the
chisel.

Assembly

1.
Position
the
drum
in a
press
and

Tool—7000-DD

D1422-A

FIG. 68—Removing Reverse-High

Clutch Piston
press
a new
bushing into
the
drum

with
the
handle
and
tool shown
in Fig.

70.

2.
Install
a new
inner seal
in the

clutch drum
and a new
outer seal
on

the clutch piston. Lubricate
the
seals

with clean transmission fluid
and in-

stall
the
piston into
the
clutch drum.

3.
Place
the 10
clutch piston

springs into position
on the
clutch
pis-

ton. Place
the
spring retainer
on top

of
the
springs.
To
install
the
snap ring

use
the
tools shown
in Fig. 67.

As
the
press
ram is
moved down-

ward, make sure
the
spring retainer
is

centered
to
clear
the
drum. Install
the

snap ring. Before
the
press ram
is re-

leased make sure the snap ring
is
posi-

tioned inside
of the
four snap ring

guides
on the
spring retainer.

4.
When
new
composition clutch

plates
are
used, soak
the
plates
in

transmission fluid
for
fifteen minutes
Tool -
T66L-7003-B4

Handle

D 1735-A

FIG. 70—Installing Reverse-High

Clutch Bushingprocarmanuals.com

07-02-24

C4 Automatic Transmission

07-02-24

D1898-A

FIG. 71—Checking Reverse-High

Clutch Snap Ring Clearance

before installing them. Install
the

clutch plates alternately starting with

a steel plate, then
a
non-metallic plate

(Fig.
66). The
last plate installed
is

the pressure plate.
For the
correct

number
of
clutch plates required
for

each transmission model, refer
to
Part

7-5.

5.
Install
the
pressure plate retain-

ing snap ring
(Fig. 66).
Make sure
the

snap ring
is
fully seated
in the
snap

ring groove
of the
clutch
hub.

SNAP RING

D1899-A
Tool
-
T65L
-
77575
- A

DISC
ii—mi
-

SPRING

FIG. 72—Removing or Installing

Forward Clutch Pressure Plate

Snap Ring
FIG. 74—Removing Disc Spring

6. With
a
feeler gauge, check
the

clearance between
the
snap ring
and

the pressure plate
(Fig. 71).

7.
The
pressure plate should
be
held

downward
as the
clearance
is
checked.

The clearance should
be
0.050
to

0.066 inch.
If the
clearance
is not

within specifications, selective thick-

ness snap rings
are
available
in
these

thicknesses, 0.060-0.064, 0.074-0.078,

0.088-0.092,
and
0.102-0.106 inch.
In-

stall
the
correct size snap ring
and re-

check
the
clearance.
D 1635-A

FORWARD CLUTCH

Disassembly

1.
Remove
the
clutch pressure plate

retaining snap ring
(Fig. 72).

2.
Remove
the
pressure plate,
and

the drive
and
driven clutch plates from

the clutch
hub (Fig. 73).

3.
Remove
the
disc spring retaining

snap ring
(Fig. 74).

4.
Apply
air
pressure
at the
clutch

piston pressure hole
(Fig. 75) to re-

SNAP RING

PISTON SEALS

RING (STEEL)

FORWARD CLUTCH CYLINDER
DRIVEN PLATES

D1900-A

FIG. 73—Forward Clutch Disassembledprocarmanuals.com

07-02-25
C4 Automatic Transmission

07-02-25

7oo/-

7000-

FIG. 75—Removing Forward

Clutch Piston

move the piston from the clutch hub.

5.
Remove the clutch piston outer

seal and the inner seal from the clutch

hub (Fig. 73).

Assembly

1.
Install new clutch piston seals on

the clutch piston and drum. Lubricate

the seals with clean transmission fluid.

2.
Install the clutch piston into the

clutch hub. Install the disc spring and

retaining snap ring (Fig. 73).

3.
Install the lower pressure plate

with the flat side up and the radius

side downward. Install one non-

metallic clutch plate and alternately

install the drive and driven plates. Be-

fore installing new composition clutch

plates,
soak them in transmission fluid

for fifteen minutes. The last plate in-

stalled will be the upper pressure

plate. Refer to Part 7-5 for the correct

number of clutch plates for the appli-

cable model transmission.

4.
Install the pressure plate retain-

ing snap ring (Fig. 73). Make sure the

snap ring is fully seated in the ring

groove of the clutch hub.

5.
With a feeler gauge, check the

clearance between the snap ring and

the pressure plate (Fig. 76). Down-

CHECK BETWEEN SNAP RING

AND PRESSURE PLATE

FIG. 76—Checking Forward

Clutch Snap Ring Clearance
ward pressure on the plate should be

used when making this check. The

clearance should be 0.026 to 0.042

inch for PEA and PEE models, or

0.020 to 0.036 inch for PEB models.

6. If the clearance is not within

specifications, selective snap rings are

available in these thicknesses: 0.060-

0.064, 0.074-0.078, 0.088-0.092, and

0.102-0.106 inch. Insert the correct

size snap ring and recheck the clear-

ance.

FORWARD CLUTCH HUB

AND RING GEAR

Disassembly

1.
Remove the forward clutch hub

retaining snap ring (Fig. 77).

SNAP RING
RING GEAR

FORWARD

CLUTCH HUB
D1903-A

FIG. 77—Forward Clutch Hub

and Ring Gear Disassembled

2.
Remove the forward clutch hub

from the ring gear.

3.
Press the bushing from the

clutch hub as shown in Fig. 78.

Tool - T66L-7003-B10

Handle

REMOVAL
Assembly

1.
Install a new bushing into the

clutch hub as shown in Fig. 78.

2.
Install the forward clutch hub in

the ring gear. Make sure the hub is

bottomed in the groove of the ring

gear.

3.
Install the front clutch hub re-

taining snap ring. Make sure the snap

ring is fully seated in the snap ring

groove of the ring gear.

INPUT SHELL AND SUN

GEAR

Disassembly

1.
Remove the external snap

from the sun gear (Fig. 79).
ring

EXTERNAL SNAP RING

SUN GEAR

D1904-A

FIG. 79—Removing or Installing

Sun Gear External Snap Ring

2.
Remove thrust washer No. 5

from the input shell and sun gear (Fig.

80).

3.
From inside the input shell, re-

move the sun gear. Remove the inter-

nal snap ring from the sun gear.

Handle
Tool - T66L-V003-B5

INSTALLATION D 1736-A

FIG. 78 — Replacing Forward Clutch Hub Bushingprocarmanuals.com

07-02-26
C4 Automatic Transmission

07-02-26

EXTERNAL SNAP RING

SUN GEAR

THRUST WASHER NO. 5

D1905-A

FIG. 80—Input Shell and Sun Gear Disassembled

4.
If the sun gear bushings are to

be replaced, use the tool shown in Fig.

81 and press both bushings through

the gear.

Tool - T66L-7003-B8

Handle
Tool - T66L-7003-B2

Handle

REMOVAL
INSTALLATION

D 1737-A

FIG. 81—Replacing Sun Gear

Bushing

GEAR

HUB AND FLANGE
D1906-A

FIG. 82—Reverse Ring Gear and

Hub Disassembled
Assembly

1.
Press a new bushing into each

end of the sun gear with the tool

shown in Fig. 81.

2.
Install the internal snap ring on

the sun gear. Install the sun gear in

the input shell.

3.
Install thrust washer No. 5 on

the sun gear and input shell (Fig. 80).

4.
Install the external snap ring on

the sun gear (Fig. 79).

REVERSE RING GEAR

AND HUB

Disassembly

1.
Remove the hub retaining snap

ring from the reverse ring gear.

2.
Remove the hub from the reverse

ring gear (Fig. 82).

Assembly

1.
Install the hub in the reverse ring

gear. Make sure the hub is fully seat-

ed in the groove of the ring gear.

2.
Install the snap ring in the rev-

erse ring gear. Make sure the snap

ring is fully seated in the snap ring

groove of the ring gear.

LOW-REVERSE

BRAKE DRUM BUSHING

REPLACEMENT

1.
Replace the low reverse brake

drum bushing if it is worn or dam-

aged. To remove the bushing, use the

cape chisel and cut along the bushing

seam until the chisel breaks through

the bushing wall. Pry the loose ends
of the bushing up with an awl and re-

move the bushing.

2.
Install a new bushing with the

tool shown in Fig. 83.

Tool -

T66L-7003-B6
Handle

D 1738-A

FIG. 83—Installing Low and

Reverse Brake Drum Bushing

GOVERNOR AND OIL

DISTRIBUTOR

Disassembly

1.
Remove the oil rings from the

governor oil distributor (Fig. 84).

2.
Remove the governor housing-

to-distributor attaching bolts. Remove

the governor from the oil distributor.

Remove the governor oil screen.

3.
Remove the primary governor

valve retaining ring (Fig. 85). Remove

the washer, spring, and primary gov-

ernor valve from the housing.

4.
Remove the secondary governor

valve spring retaining clip, spring, and

governor valve from the housing.

5.
Install the secondary governor

valve in the housing. Install the spring

and retaining clip. Make sure the dip

is installed with the small concaved

area facing downward, to hold the

spring in the correct position.

Assembly

1.
Install the primary governor

valve in the housing. Install the spring,

washer and retaining ring. Make sure

the washer is centered in the housing

on top of the spring and the retaining

ring is fully seated in the ring groove

of the housing.

2.
Install the governor oil screen.

3.
Install the governor assembly on

the oil distributor and torque the at-

taching bolts to specification.procarmanuals.com