automatic transmission fluid FORD MUSTANG 1969 Volume One Chassis

07-01-08
General Transmission Service

07-01-08

3.
Install the bench testing tool on

the transmission.

4.
Remove the
1/8-inch
pipe plug

at the transmission case. Turn the

front pump in a clockwise direction at

75-100 rpm until a regular flow of

transmission fluid leaves the hole in

the transmission case. This operation
bleeds the air from the pump.

5.
Install the pressure gauge (77820

or T57L-77820-A) as shown in Fig.

13.

PRESSURE TESTS

Turn the front pump at 75-100 rpm
and note the gauge readings. The

pressure readings on the bench test

must be within the limits as outlined

in Figure 13, for the engine idle check.

If pressure gauge readings are with-

in limits in all selector lever positions,

install the vacuum diaphragm control

rod unit.

COMMON ADJUSTMENTS AND REPAIRS

TRANSMISSION FLUID DRAIN

AND REFILL

Normal maintenance and lubrica-

tion requirements do not necessitate

periodic automatic transmission fluid

changes.

If a major repair, such as a clutch

band, bearing, etc., is required in the

transmission, it will have to be re-

moved for service. At this time the

converter, transmission cooler and

cooler lines must be thoroughly

flushed to remove any dirt.

When filling a dry transmission and

converter, install five quarts of fluid.

Start the engine, shift the selector

lever as outlined below, and check and

add fluid as necessary.

Following are the procedures for

partial drain and refill due to in-

vehicle repair operation.

C4 TRANSMISSION

1.
On PEA models, disconnect the

fluid filler tube from the transmission

oil pan to drain the fluid.

On PEB and PEE models, loosen

the pan attaching bolts to drain the

fluid from the transmission.

2.
When the fluid has stopped

draining from the transmission, re-

move and thoroughly clean the pan

and the screen. Discard the pan gas-

ket.

3.
Place a new gasket on the pan,

and install the pan on the transmis-

sion.

4.
On PEA models, connect the

filler tube to the pan and tighten the

fitting securely.

5.
Add three quarts of fluid to the

transmission through the filler tube.

6. Run the engine at idle speed for

about two minutes, and then run it at

fast idle speed (about 1200 rpm) until

it reaches it's normal operating temp-

erature. Do not race the engine.

7.
Shift the selector lever through

all the positions, place it at P, and

check the fluid level. The fluid level

should be above the ADD mark. If
necessary, add enough fluid io the

transmission to bring the level be-

tween the ADD and FULL marks on

che dipstick. Do not overfill the trans-

mission.

FMX OK C6

TRANSMISSION

1.
Raise the vehicle on a hoist or

jack stands.

2.
Place a drain pan under the

transmission.

3.
Loosen the pan attaching bolts

to drain the fluid from the transmis-

sion.

4.
After the fluid has drained to the

level of the pan flange, remove the

rest of the pan bolts working from the

rear and both sides of the pan to

allow it to drop and drain slowly.

5.
When the fluid has stopped

draining from the transmission, re-

move and thoroughly clean the pan

and the screen. Discard the pan gas-

ket.

6. Place a new gasket on the pan,

and install the pan on the transmis-

sion.

7.
Add three quarts of fluid to the

transmission through the filler tube.

8. Run the engine at idle speed for

about two minutes, and then run it at

fast idle speed (about 1200 rpm) until

it reaches normal operating tempera-

ture.
Do not race the engine.

9. Shift the selector lever through

all the positions, place it at P, and

check the fluid level. The fluid level

should be above the ADD mark. If

necessary, add enough fluid to the

transmission to bring the level be-

tween the ADD and FULL marks on

the dipstick. Do not overfill the trans-

mission.

OIL COOLER TUBE

REMOVAL AND INSTALLATION

When fluid leakage is found at the

oil cooler, the cooler must be re-

placed. Cooler replacement is de-

scribed in the Cooling System Section

of Group 11.
When one or more of the fluid

cooler steel tubes must be replaced,

each replacement tube must be fabri-

cated from the same size steel tubing

as the original line.

Using the old tube as a guide, bend

the new tube as required. Add the

necessary fittings, and install the tube.

After the fittings have been tight-

ened, add fluid as needed, and check

for fluid leaks.

VACUUM DIAPHRAGM

ADJUSTMENT NON-ALTITUDE

COMPENSATING TYPE

The C4 and C6 transmissions are

equipped with an adjustable vacuum

diaphragm assembly. A similar ad-

justable diaphragm has been released

for service with the FMX transmis-

sion. However, the FMX service dia-

phragm is not interchangeable with

that used on C4 and C6 models.

The vacuum diaphragm assembly

has an adjusting screw in the vacuum

hose connecting tube (Fig. 14).

SPRING

SEAT

THIS CLEARANCE CHANGED

BY ADJUSTING SCREW

D1830-A

FIG. 14—Adjustable Vacuum Unit

The inner end of the screw bears

against a plate which in turn bears

against the vacuum diaphragm spring.

All readings slightly high or all

readings slightly low may indicate the

vacuum unit needs adjustment to cor-

rect a particular shift condition.procarmanuals.com

07-01-11
General Transmission Service

07-01-11

STOP
PIN

GROMMET

Tool - T67P-734LA

GROMMET

LEVER

CONTROL ROD REMOVAL
GROMMET INSTALLATION

Tool - T67P-734LA

r

CONTROL ROD INSTALLATION
3/16"-1/4'

CONTROL ROD

STOP
PIN

FIG. 18—Removing
or
Installing Shift Linkage Grommet
D 1742-A

MANUAL SHIFT LINKAGE

GROMMET REPLACEMENT-

COLUMN SHIFT

The manual lever assembly
on ve-

hicles equipped with
a
column shift
in-

corporates
an oil
impregnated plastic

grommet
in the end of the
lever
arm.

A special tool T67P-7341-A
is re-

quired
to
install
the
grommet
in the

manual lever,
and to
install
the
manu-

al linkage
rod
into
the
grommet.
Re-

move
and
install
the
grommet
as fol-

lows:

1.
Place
the
lower
jaw of the
tool

between
the
manual lever
and the con-

trol
rod.
Position
the
stop
pin
against
the
end of the
control
rod (Fig. 18)

and force
the rod out of the
grommet.

Remove
the
grommet from
the
manu-

al lever
by
cutting
off the
large shoul-

der with
a
sharp knife.
The
grommet

must
be
removed from
the
manual

lever
and a new one
installed each

time
the rod is
disconnected.

2.
Before installing
a
new grommet,

adjust
the
stop
pin to 1/2
inch
and

coat
the
outside
of the
grommet with

lubricant. Then, place
the
grommet
on

the stop
pin and
force
it
into
the
man-

ual lever hole. Turn
the
grommet
sev-

eral times
to be
sure
it is
properly

seated.

3.
Readjust
the
stop
pin to the
height shown
in Fig. 18. The pin

height
is
determined
by the
length
of

the
rod end
which
is to be
installed

into
the
grommet.
If the pin
height
is

not adjusted,
the
control
rod may be

pushed
too far
through
the
grommet

causing damage
to the
grommet
re-

taining
lip.

4.
With
the pin
height properly
ad-

justed, position
the
control
rod on the

tool
and
force
the rod
into
the
grom-

met until
the
groove
in the rod
seats

on
the
inner retaining
lip of the
grom-

met.
Be
sure
the rod
protrudes

through
the
grommet approximately

1/4 inch after installation.

CLEANING
AND
INSPECTION

CLEANING

TRANSMISSION

Clean
the
parts with suitable solvent

and
use
moisture-free
air to dry off all

the parts
and
clean
out oil
passages.

The composition clutch plates,

bands
and
synthetic seals should
not

be cleaned
in a
vapor degreaser
or
with
any
type
of
detergent solution.

To clean these parts, wipe them
off

with
a
lint-free cloth.
New
clutch

plates
or
bands should
be
soaked
in

transmission fluid
for
fifteen minutes

before
the
plates
or
bands
are as-

sembled.

CONVERTER

The converter cannot
be
disas-

sembled
for
cleaning.
If
there
is rea-
son
to
believe that
the
converter
con-

tains
an
excessive amount
of
foreign

material,
it
should
be
thoroughly

cleaned.
See the
instructions provided

with
the
Rotunda Automatic Trans-

mission Torque Converter
and
Cooler

Cleaner LRE-60081.

OIL COOLER

When
a
clutch
or
band failure
or

other internal trouble
has
occurred
inprocarmanuals.com

07-01-12
General Transmission Service

07-01-12

the transmission,
any
metal particles

or clutch plate
or
band material that

may have been carried into
the
cooler

should
be
removed from
the
system
by

flushing
the
cooler
and
lines before

the transmission
is put
back into serv-

ice.
In no
case should
an
automatic

transmission having
a
clutch
or
band

failure
or
other internal trouble result-

ing
in
fluid contamination,
be put

back into service without first flushing

the transmission
oil
cooler.

To flush
the oil
cooler, follow
the

instruct!
on >
provided with
the
Rotun-

da Automatic Transmission Torque

Converter
and
Cooler Cleaner
LRE-

60081.

INSPECTION

TURBINE
AND
STATOR
END

PLAY CHECK

A special tool
(Fig. 19)
must
be

used
to
check
the
condition
of the

converter. This special tool
is
used
to

check
the
turbine
and
stator
end
play

and
the
operation
of the
one-way
sta-

tor clutch.

CRUISE-O-MATIC

Too/-T58L-7902-A

C-4 AND C-6 TRANSMISSION

Tool-T59P.7902.Bor 7937-B

ON C-4 AND C-6 TRANSMISSION

Tool-T64L-7902-A
D
1499-E

FIG. 19—Converter Checking Tool

1.
Insert
the
tool (Fig.
19)
into
the

converter pump drive
hub
until
it
bot-

toms.

2.
Install
the
guide over
the con-

verter pump drive
hub.
3.
Expand
the
split fiber bushing
in

the turbine spline
by
tightening
the

adjusting
nut.
Tighten
the
adjusting

nut until
the
tool
is
securely locked

into
the
spline.

4.
Attach
a
dial indicator
to the

tool (Fig.
20 or
21). Position
the
indi-

cator button
on a
converter pump

drive
hub, and set the
dial face
at 0

(zero).

5.
Lift
the
tool upward
as far as it

will
go and
note
the
indicator reading.

The indicator reading
is the
total
end

play which
the
turbine
and
stator

share.
If the
total
end
play exceeds

the limits specified
in
Part 7-5, replace

the converter unit.

6. Loosen
the
adjusting
nut to
free

the split bushing,
and
then remove
the

tool from
the
converter.

STATOR ONE-WAY CLUTCH

CHECK

1.
Install
the
stator outer race hold-

ing tool
in one of the
four holes
pro-

vided
in the
stator (Fig.
20 or 21).

2.
Insert
the
tool
in the
converter

pump drive hub.
As the
tool enters
the

converter,
the
pins will engage
the sta-

tor clutch inner race spline.

3.
Place
a
torque wrench
on the

tool (Fig.
20 or
21).
The
tool (and
sta-

tor inner race) should turn freely

clockwise (from
the
pump drive
hub

inside
the
converter).
It
should lock
up

and hold
a 10
ft-lb pull when
the

wrench
is
turned counterclockwise.

Try
the
clutch
for
lockup
and
hold
in

at least five different locations around

the converter.
On
the
C4
or C6
Auto-

matics,
the
metal ring holding
the

locking tool will have
to be
held
by

hand during this check.

4.
If the
clutch fails
to
lock
up and

hold
a 10
ft-lb torque, replace
the

converter unit.

STATOR
TO
IMPELLER

INTERFERENCE CHECK

1.
Position
the
front pump assem-

bly
on a
bench with
the
spline
end of

the stator shaft pointing
up
(Fig.
22).

2.
Mount
a
converter
on the
pump

so that
the
splines
on the
one-way

clutch inner race engage
the
mating

splines
of the
stator support,
and the

converter
hub
engages
the
pump drive

gear.

3.
While holding
the
pump station-

ary, try
to
rotate the converter counter-

clockwise.
The
converter should
ro-

tate freely without
any
signs
of
inter-

ference
or
scraping within
the
convert-

er assembly.
4.
If
there
is an
indication
of
scrap-

ing,
the
trailing edges
of the
stator

blades
may be
interfering with
the

leading edges
of the
impeller blades.

In such cases, replace
the
converter.

STATOR
TO
TURBINE

INTERFERENCE CHECK

1.
Position
the
converter
on the

bench front side down.

2.
Install
a
front pump assembly
to

engage
the
mating splines
of
the
stator

support
and
stator,
and
pump drive

gear lugs.

3.
Install
the
input shaft, engaging

the splines with
the
turbine
hub (Fig.

23).

4.
While holding
the
pump station-

ary, attempt
to
rotate
the
turbine with

the input shaft.
The
turbine should
ro-

tate freely
in
both directions without

any signs
of
interference
or
scraping

noise.

5.
If
interference exists,
the
stator

front thrust washer
may be
worn,
al-

lowing
the
stator
to hit the
turbine.
In

such cases,
the
converter must
be re-

placed.

The converter crankshaft pilot

should
be
checked
for
nicks
or dam-

aged surfaces that could cause inter-

ference when installing
the
converter

into
the
crankshaft. Check
the con-

verter front pump drive
hub for
nicks

or sharp edges that would damage
the

pump seal.

OUTPUT SHAFT
AND

PRIMARY
SUN
GEAR SHAFT

(FMX TRANSMISSION)

1.
Inspect
the
thrust surfaces
and

journals
for
scores. Inspect
the
inter-

nal gear
for
broken
or
worn teeth.

2.
Inspect
the
aluminum sleeve
for

scores
or
leakage. Inspect
the
ring

grooves
for
burrs.

3.
Inspect
the
keyway
and
drive

ball pocket
for
wear,
and
inspect
the

splines
for
burrs, twist
or
wear.

4.
Inspect
the
output shaft sleeve

for alignment with
the
governor drive

ball (Fig.
24).

5.
Inspect
the
external parking gear

teeth
for
damage
and the
speedometer

drive gear teeth
for
burrs.

6.
If
either
the
output shaft
or
ring

gear
has
been replaced, place
the as-

sembled unit with
the
gear face down

on
the
bench, push
the
shaft down-

ward,
and
check
the
clearance
be-

tween
the top of the
snap ring
and its

groove
(Fig. 25).
If
this clearance
ex-

ceeds 0.002 inch, replace
the
snap ring

with
a
thicker ring
to
reduce
the
clear-

ance
to
less than 0.002 inch. Selectiveprocarmanuals.com

07-01-16
General Transmission bervice
07-01-16

CENTER SUPPORT

PLANETARY CLUTCH
"CAM TYPE" CLUTCH RACE

CHAMFER ON PRODUCTION

PART, ONLY-SERVICE PART NOT CHAMFERED
PLANET CARRIER

D1938-A

FIG. 27—Roller Type Planetary Clutch, Carrier and Center Support

shows wear or deterioration, replace

the seal.

4.
Inspect the seal counterbore and

remove all burrs and scores with cro-

cus cloth.

REAR CLUTCH (FMX)

AND REVERSE-HIGH CLUTCH

(C4 AND C6 AUTOMATIC)

1.
Inspect the drum band surface,

the bushing, and thrust surfaces for

scores. Minor scores may be removed

with crocus cloth. Badly scored parts

must be replaced.

Inspect the clutch piston bore and

the piston inner and outer bearing sur-

faces for scores. Check the air bleed

ball valve in the clutch piston for free

movement. Check the orifice to make

sure it is not plugged.

2.
Check the fluid passages for ob-

structions. All fluid passages must be

clean and free of obstructions.

3.
Inspect the clutch plates for wear

and scoring and check the plates for

fit on the clutch hub serrations. Re-

place all plates that are badly scored,

worn or do not fit freely in the hub

serrations.

4.
Inspect the clutch pressure plate

for scores on the clutch plate bearing

surface. Check the clutch release

spring(s) for distortion.

5.
On an FMX transmission, in-

spect the needle bearing for worn rol-

lers.

FRONT CLUTCH (FMX)

AND FORWARD CLUTCH

(C4 OR C6

TRANSMISSIONS)

1.
Inspect the clutch cylinder thrust

surfaces, piston bore, and clutch plate
serrations for scores or burrs. Minor

scores or burrs may be removed with

crocus cloth. Replace the clutch cylin-

der if it is badly scored or damaged.

2.
Check the fluid passage in the

clutch cylinder for obstructions. Clean

out all fluid passages. Inspect the

clutch piston for scores and replace if

necessary. Inspect the piston check

ball for freedom of movement and

proper seating (Fig. 28).

CLUTCH

CYLINDER

PISTON

SEAL
CLIP

D1939-A

. 28—Clutch Piston Check

Valve

3.
Check the clutch release spring

for distortion and cracks. Replace the

spring if it is distorted or cracked.
4.
Inspect the composition and the

steel clutch plates and the clutch pres-

sure plate for worn or scored bearing

surfaces. Replace all parts that are

deeply scored.

5.
On FMX and C4 transmissions,

check the clutch plates for flatness

and fit on the clutch hub serrations.

Discard any plate that does not slide

freely on the serrations or that is not

flat.

6. Check the clutch hub thrust sur-

faces for scores and the clutch hub

splines for wear.

7.
On an FMX transmission, in-

spect the turbine shaft bearing sur-

faces for scores. If excessive clearance

or scores are found, discard the unit.

Check the splines on the turbine

shaft for wear and replace the shaft if

the splines are excessively worn. In-

spect the bushing in the turbine shaft

for scores. On a C4 or C6 Automatic

transmission, check the input shaft for

damaged or worn splines.

FRONT PUMP AND

STATOR SUPPORT

1.
Inspect the mating surfaces of

the pump body and cover for burrs.

2.
Inspect the drive and driven gear

bearing surface for scores, and check

the gear teeth for burrs. Inspect the

stator support splines for burrs and

wear.

3.
Check the fluid passages for ob-

structions.

4.
If any parts other than the stator

support are found defective, replace

the pump as a unit. Minor burrs and

scores may be removed with crocus

cloth. The stator support is serviced

separately.

5.
On a C4 or C6 Automatic trans-

mission, check the oil ring grooves in

the stator support for nicks, burrs or

damaged edges. On a C6 transmis-

sion, check the large seal ring groove

of the pump body for damage. Check

the gasket mating surface of the pump

body for damage.

REAR SUPPORT

(FMX TRANSMISSION)

1.
Inspect the gasket mating sur-

faces for damage.

2.
Inspect the support bushing for

scores.

3.
Inspect the rear support fluid

passages for obstructions.

4.
Check the fit of the fluid tubes in

the support.procarmanuals.com

07-01-17
General Transmission Service
07-01-17

PRESSURE REGULATOR

(FMX TRANSMISSION)

1.
Inspect the regulator body and

cover mating surface for burrs.

2.
Check all fluid passages for ob-

structions.

3.
Inspect the control pressure and

converter pressure valves and bores for

burrs and scores. Remove all burrs

carefully with crocus cloth.

4.
Check free movement of the

valves in their bores. The valves

should fall freely into the bores when

both the valve and bore are dry.

5.
Inspect the valve springs and

spacers for distortion.

CONTROL VALVE BODY

1.
Clean all parts thoroughly in

clean solvent, and then blow them dry

with moisture-free compressed air.

2.
Inspect all valve and plug bores

for scores. Check all fluid passages for

obstructions. Inspect the check valve

for free movement. Inspect all mating

surfaces for burrs or distortion. In-

spect all plugs and valves for burrs

and scores. Crocus cloth can be used

to polish valves and plugs if care is

taken to avoid rounding the sharp

edges of the valves and plugs.

3.
Inspect all springs for distortion.

Check all valves and plugs for free

movement in their respective bores.

Valves and plugs, when dry, must fall

from their own weight in their respec-

tive bores.

4.
Roll the manual valve on a flat

surface to check it for a bent condi-

tion.

GOVERNOR

1.
Inspect the governor valves and

bores for scores. Minor scores may be
removed from the valves with crocus

cloth. Replace the governor if the

valves or body is deeply scored.

2.
Check for free movement of the

valves in the bores. The valves should

slide freely of their own weight in the

bores when dry. Inspect fluid passages

in the valve body and counterweight

for obstructions. All fluid passages

must be clean.

3.
Inspect the mating surfaces of

the governor body and governor dis-

tributor (C4 or C6 Automatic) for

burrs and distortion. Mating surfaces

must be smooth and flat.

4.
Check the mating surface of the

governor valve and the counterweight

on a FMX transmission for burrs or

scratches.

5.
When cleaning the governor as-

sembly (C4 Automatic), the oil screen

should be removed from the collector

body and thoroughly blown out with

compressed air.

FRONT SERVO (FMX)

AND INTERMEDIATE

SERVO (C4 AND C6

AUTOMATIC)

1.
Inspect the servo bore for cracks

and the piston bore and the servo pis-

ton stem for scores. Check fluid pas-

sages for obstructions. Replace seals

that are damaged.

2.
On an FMX transmission, check

the actuating lever for free movement,

and inspect it for wear. If necessary to

replace the actuating lever or shaft,

remove the retaining pin and push the

shaft out of the bracket.

Inspect the adjusting screw threads

and the threads in the lever for dam-

age.

3.
Check the servo spring and servo

band strut(s) for distortion.

4.
Inspect the cover seal and gasket

cover sealing surface for defects.
REAR SERVO (FMX)

AND LOW-REVERSE SERVO

(C4 TRANSMISSION)

1.
Inspect the servo body for cracks

and the piston bore for scores.

2.
Check the fluid passages for ob-

structions.

3.
Inspect the band and the struts

for distortion. Inspect the band ends

for cracks.

4.
Inspect the servo spring for dis-

tortion.

5.
Inspect the band lining for exces-

sive wear and bonding to the metal

band.

6. On an FMX transmission, check

the servo body to case mating surface

for burrs. Check the accumulator pis-

ton and the check valve for freedom

of movement. Check the actuating

lever socket for scores.

7.
Replace seals that are damaged.

CASE

Inspect the case for cracks and

stripped threads. Inspect the gasket

surfaces and mating surfaces for

burrs.
Check the vent for obstructions,

and check all fluid passages for ob-

structions and leakage (Figs. 10, 11

and 12).

Inspect the case bushing for scores.

Check all parking linkage parts for

wear or damage.

ONE-WAY CLUTCH

1.
Inspect the outer and inner races

for scores or damaged surface area

where the rollers contact the races. If

the outer race on the C6 transmission

is damaged, the low-reverse clutch hub

must be replaced.

2.
Inspect the rollers and springs

for excessive wear or damage.

3.
Inspect the spring and roller case

for bent or damaged spring retainers.procarmanuals.com

07-02-09
C4 Automatic Transmission

07-02-09

11.
Remove the handle from the se-

lector lever.

12.
Install the selector housing and

lever assembly as shown in Figure 8.

Torque the attaching bolts 4-6 ft-lbs.

13.
Connect the dial indicator light.

14.
Install the pointer back-up

shield on the housing and lever assem-

bly.

15.
Install the dial housing and

tighten the attaching screws.

16.
Install the selector lever handle

and tighten the attaching screw.

17.
Position the selector lever in the

D position.

18.
Raise the vehicle. Install the

transmission manual lever rod to the

selector lever. Adjust the manual link-

age.

19.
Lower the vehicle and check the

transmission operation in each selo:c-

tor lever detent position.

BAND ADJUSTMENT

INTERMEDIATE BAND

1.
Clean all the dirt from the band

adjusting screw area. Remove and dis-

card the locknut.

2.
Install a new locknut on the ad-

justing screw. With the tool shown in

Fig. 13, tighten the adjusting screw

until the tool handle clicks. The tool is

a pre-set torque wrench which clicks

and overruns when the torque on the

adjusting screw reaches 10 ft-lbs.

I D1854-A

FIG. 13—Adjusting Intermediate

Band

Tool-T59P-77370-B

D1855-A

FIG. 14—Adjusting Low-Reverse

Band
3.
Back off the adjusting screw ex-

actly 1 3/4 turns.

4.
Hold the adjusting screw from

turning and torque the lock nut to

specification.

LOW-REVERSE BAND

1.
Clean all the dirt from the band

adjusting screw area. Remove and dis-

card the locknut.

2.
Install a new locknut on the ad-

justing screw with the tools shown in

Fig. 14, tighten the adjusting screw

until the tool handle clicks. The tool is

a pre-set torque wrench which clicks

and overruns when the torque on the

adjusting screw reaches 10 ft-lbs.

3.
Back off the adjusting screw ex-

actly 3 full turns.

4.
Hold the adjusting screw from

turning and torque the lock nut to

specification.

OIL PAN AND CONTROL

VALVE BODY REPLACEMENT

1.
Raise the vehicle so the trans-

mission oil pan is accessible.

2.
Drain the transmission fluid.

If the same fluid is to be used

again, filter the fluid through a 100

mesh screen. Re-use the fluid only if it

is in good condition.

3.
Remove the transmission fluid

pan attaching bolts, pan and gasket.

4.
Remove the valve body-to-case

attaching bolts (Fig. 25). Remove the

valve body from the case and the

transmission inner control levers.

5.
Refer to the Major Repair Oper-

ation for control valve body repair op-

eration.

6. Thoroughly clean and remove all

the gasket material from the pan and

the pan mounting face of the case. In-

stall the valve body to the case, engag-

ing the transmission inner control le-

vers with the valve body manual and

downshift valves.

7.
Install the eight valve body to

case attaching bolts. Torque the bolts

to specification. Operate the external

manual and downshift levers to check

for proper travel of the valve body

manual and downshift valves.

8. Place a new gasket on the pan.

Install the pan and attaching bolts.

Torque the bolts to specification. In-

stall the fluid filler tube if it was re-

moved. Torque the attaching nut to

specifications.

9. Lower the vehicle and fill the

transmission with fluid. Check the

transmission pan area for fluid leak-

age.
INTERMEDIATE SERVO

REPLACEMENT

1.
Raise the vehicle and remove the

four servo cover-to-case attaching

bolts.

2.
Remove the servo cover, gasket,

piston, and piston return spring. Re-

move the piston from the cover (Fig.

45).

3.
Remove the piston seals and

cover gasket.

4.
Install new piston seals on the

piston. Lubricate the piston seals with

clean transmission fluid. Install the

servo piston in the cover.

5.
Install the piston retvrn spring in

the case. Place a new gasicet on the

cover. Install the piston and cover into

the transmissic se. Use two 5/16

18 x 1 1/4 bolts, 180 degrees apart to

position the cover against the case.

6. Install the two servo cover at-

taching bolts. Remove the two 1 1/4

inch bolts and install two attaching

bolts.
Torque the bolts to specifica-

tion.

7.
Adjust the intermediate band.

Lower the vehicle and check the trans-

mission fluid level.

8. If the band can not be adjusted

properly, the struts are not in posi-

tion. Remove the pan and valve body.

Install the struts, valve body, pan, and

adjust the band. Refill the transmis-

sion with fluid.

LOW-REVERSE SERVO

PISTON REPLACEMENT

1.
Raise the vehicle on a hoist.

2.
Loosen the reverse band adjust-

ing screw lock nut. Tighten the reverse

band adjusting screw to 10 ft-lbs tor-

que.
(Tightening the screw will insure

that the band strut will be held against

the case by the band, preventing it

from falling down when the reverse

servo piston assembly is removed).

3.
Remove the four servo cover to

case attaching bolts. Remove the iden-

tification tag and vent tube retaining

clip.
Remove the servo cover and s»»^

from the case.

4.
Remove the servo piston from

the case. The piston seal cannot be re-

placed, without replacing the piston.

The seal is bonded to the piston.

5. To remove the piston from the

stem, insert a small screw driver in the

hole of the piston (Fig. 44). Remove

the piston attaching nut.

6. Position the accumulator spring

and spacer (Fig. 43) on the piston

stem. Make sure the crowned side of

the spring is facing toward the rod.

Install.a new piston on the piston re-

taining shaft. Install the attaching nut.

Torque the nut to specification.procarmanuals.com

07-02-10
C4 Automatic Transmission

07-02-10

7.
Install
the
piston into
the
case.

Install
a new
seal
on the
cover. Install

the cover
by
using
two
5/16—18 bolts,

1
1/4
inch long,
at
180
degrees apart

to position
the
servo cover
on the

case.
Install
the
vent tube retaining

clip
and
identification
tag.
Install
two

cover attaching bolts. Remove
the two

installing bolts
and
install
the
last
two

attaching bolts. Torque
the
cover-

to-case attaching bolts
to
specifica-

tion.

8. Adjust
the
low-reverse band.

Lower
the
vehicle
and
check
the
trans-

mission fluid level.

9.
If the
band
can not be
adjusted

properly,
the
struts
are not in
posi-

tion. Remove
the
fluid
pan and
valve

body. Install
the
struts, valve body,

pan
and
adjust
the
band. Refill
the

transmission with fluid.

EXTENSION HOUSING

BUSHING
AND
REAR

SEAL REPLACEMENT

1.
Disconnect
the
drive shaft from

the transmission.

2.
When only
the
rear seal needs

replacing, carefully remove
it
with
a

tapered chisel
or the
tools shown
in

Fig.
15.
Remove
the
bushing
as
shown

in
Fig. 16. Use the
bushing remover

carefully
so
that
the
spline- seal
is not

damaged.

3.
When installing
a new
bushing

use
the
special tool shown
in
Fig.
17.

4.
Before installing
a new
seal,
in-

spect
the
sealing surface
of the
univer-

sal joint yoke
for
scores.
If
scores
are

found, replace
the
yoke.

5.
Inspect
the
counterbore
of the

housing
for
burrs
and
remove with

crocus cloth.

6. Install
the
seal into
the
housing

with
the
tool shown
in Fig. 18. The

seal should
be
firmly seated
in the

bore.
Coat
the
inside diameter
of the

fiber portion
of the
seal with
B8A-

19589-A lubricant.

7.
Coat
the
front universal joint

spline with B8A-19589-A lubricant

and install
the
drive shaft.

EXTENSION HOUSING
AND

GOVERNOR REPLACEMENT

1.
Raise
the
vehicle
on the
hoist.

2.
Remove
the
drive shaft. Position

the transmission jack
to
support
the

transmission.

3.
Remove
the
speedometer cable

from
the
extension housing.

4.
Remove
the
extension housing
to

crossmember mount attaching bolts.

Raise
the
transmission
and
remove
the

mounting
pad
between
the
extension

housing
and the
crossmember.
Tool—
I775-AB

Tool—
T50T-100-A

FIG. 15—Removing Extension Housing

EXTENSION HOUSING

rIG. 16—Removing Extension

Housing Bushing

BUSHING

I Tool—T57P-76 7-B

^mmmfm^
0^7000-Ht

EXTENSION HOUSING
D1O26-B

FIG. 17—Installing Extension

Housing Bushing
D 1927-A

5.
Loosen
the
extension housing
at-

taching bolts
to
drain
the
transmission

fluid. Disconnect
the
exhaust inlet

pipes
at the
manifold
and
lower
the

inlet pipes.

6. Remove
the six
extension

housing-to-case attaching bolts
and re-

move
the
extension housing.

7.
Remove
the
governor housing
to

governor distributor attaching bolts

(Fig.
19).
Remove
the
governor hous-

ing from
the
distributor.

8. Refer
to
Major Repair Opera-

tions
for
governor repair operations.

9. Install
the
governor housing
on

the governor distributor
(Fig.
19). In-

stall
the
attaching bolts
and
torque
the

bolts
to
specification.

Tool—
T6
U-7657-A
or B,

7657AA,
or
7657-AB

EXTENSION HOUSING

REAR SEAL

FIG. 18—Installing Extension Housing Seal
D 2042-A

GOVERNOR GOVERNOR GOVERNOR

BOLTS
(4)
DISTRIBUTOR DISTRIBUTOR

SLEEVE

I

D1859-A

FIG. 79—Governor Installed
10.
Install
a new
extension housing

gasket
on the
case. Install
the
exten-

sion housing
and six
attaching bolts.

Torque
the
bolts
to
specification.

11.
Install
the
transmission mount-

ing
pad on the
crossmember. Lower

the transmission
and
install
the
exten-

sion housing
to
crossmember attach-

ing bolts. Torque
the
bolts
to
specifi-

cation. Remove
the
transmission jack.

12.
Install
the
speedometer cable
in

the extension housing. Install
the
drive

shaft.

13.
Install
the
inlet pipes
on the

manifold.

14.
Lower
the
vehicle
and
fill
the

transmission with fluid.

15.
Check
the
extension housing

area
for
fluid leakage.procarmanuals.com

07-02-11
C4 Automatic Transmission
07-02-11

REMOVAL AND INSTALLATION

An oil impregnated plastic grommet

is incorporated in the end of the man-

ual shift linkage lever arm on all col-

umn shift vehicles. A special tool

T67P-7341-A is required to install the

grommet in the manual lever, and to

install the manual linkage rod into the

grommet. Refer to Part 7-1, Section

2,
for the grommet replacement pro-

cedures.

TRANSMISSION REMOVAL

1.
Raise the vehicle and remove the

converter cover attaching bolts, at the

lower front side of the converter hous-

ing. Remove the cover.

2.
Remove the two conveter drain

plugs (Fig. 20). Drain the fluid from

the converter. Install the two convert-

er drain plugs.

3.
Remove the drive shaft and in-

stall the extension housing seal repla-

cer tool in the extension housing.

4.
Remove the vacuum line hose

from the transmission vacuum unit.

Disconnect the vacuum line from the

retaining clip.

5.
Remove the two extension

housing-to-crossmember attaching

bolts.

6. Remove the speedometer cable

from the extension housing.

7.
Disconnect the exhaust pipe

flange from the manifolds.

8. Remove the parking brake cable

from the equalizer lever.

9. Remove the fluid filler tube from

the pan and drain the transmission

fluid on PEA models. On PEB and

PEE models, loosen the transmission

CONVERTER A
ATT,
pan bolts and drain the fluid at one

corner of the pan. Tighten the attach-

ing bolts after the fluid has drained.

10.
Disconnect the fluid cooler lines

from the transmission case.

11.
Remove the manual and kick-

down linkage rods from the transmis-

sion control levers.

On vehicles equipped with a column

shift, use tool T67P-7341-A to remove

the selector rod from the manual

lever.

12.
On a Mustang, disconnect the

neutral start switch wires from the re-

taining clamps and connectors.

13.
Disconnect the starter cable.

Remove the starter attaching bolts

and remove the starter from the con-

verter housing.

14.
On PEB and PEE models, lift

the fluid filler tube from the case.

15.
Remove the four converter-

to-flywheel attaching nuts.

16.
Position the transmission jack

to support the transmission and secure

the transmission to the jack with a

safety chain.

17.
Remove the four crossmember

attaching bolts and lower the

crossmember.

18.
Remove the five converter

housing-to-engine attaching bolts.

Lower the transmission (Fig. 21) and

remove it from under the vehicle.

TRANSMISSION

INSTALLATION

1.
With the converter properly in-

D 2043-A

FIG. 20—Converter Drain Plug

Location
FIG. 21—Transmission Mounted

on Jack
stalled, place the transmission on the

jack (Fig. 21). Secure the transmission

to the jack with the safety chain.

2.
Raise the transmission into posi-

tion and install the five converter

housing-to-engine attaching bolts.

Torque the bolts to specification. Re-

move the safety chain from the trans-

mission.

3.
Position the crossmember and

install the four attaching bolts. Torque

the bolts to specifications.

4.
Lower the transmission and in-

stall the extension housing and

crossmember attaching bolts. Torque

the bolts to specification.

5.
Install the four flywheel to con-

verter attaching nuts. Torque the nuts

to specification.

6. Remove the transmission jack.

Install the fluid filler tube in the

transmission case or pan. Install the

vacuum hose on the transmission vac-

uum unit. Install the vacuum line re-

taining clip.

7.
Connect the fluid cooling lines to

the transmission case.

8. On a Mustang, connect the neu-

tral start switch wires to their respec-

tive connectors and secure the harness

in the retaining clamps.

9. Install the linkage rods on the

transmission downshift and manual

control levers.

On vehicles equipped with a column

shift, use tool T67P-7341-A to install

a new grommet in the manual lever,

and to install the manual linkage rod

into the grommet.

10.
Connect the speedometer cable

to the extension housing.

11.
Connect the exhaust inlet pipes

to the manifolds.

12.
Install and adjust the parking

brake cable at the equalizer lever.

13.
Install the converter housing

cover and torque the attaching bolts

to specification.

14.
Install the starter and torque

the attaching bolts to specification.

Connect the starter cable.

15.
Install the drive shaft. Torque

the companion flange U-bolts attach-

ing nuts to specification.

16.
Lower the vehicle. Fill the

transmission to the proper level with

the specified fluid. Adjust the manual

and downshift linkage.procarmanuals.com

07-02-15

C4 Automatic Transmission

07-02-15

GOVERNOR DISTRIBUTOR

REVERSE RING GEAR

HUB RETAINING RING

D 2044-A

FIG.
37—Removing
or
Installing

Reverse
Ring Gear
Hub
Retaining

Ring

I®

LOW-RE'VERSE BAND

D1873-A

FIG.
38—Removing
or
Installing

Low-Reverse
Band

OUTPUT SHAFT

GOVERNOR

DISTRIBUTOR

SLEEVE

D1875-A

FIG.
39—Removing
or
Installing

Output
Shaft
and
Governor

Distributor
LOCK RING

D1876-A

FIG.
40—Removing
or
Installing

Governor
Distributor Snap Ring

or rollers.
The
outer race
of the one-

way clutch cannot
be
removed worn

the case until
the
extension housing,

output shaft
and
governor distributor

sleeve
are
removed.

21.
Remove
the
transmission from

the holding fixture. Position
the
trans-

mission
on the
bench
in a
vertical
po-

sition with
the
extension housing
up.

Remove
the
four extension housing-

to-case attaching bolts. Remove
the

extension housing
and
gasket from
the

case.

22.
Pull outward
on the
output

shaft
and
remove
the
output shaft
and

governor distributor assembly from

the governor distributor sleeve
(Fig.

39).

23.
Remove
the
governor distribu-

tor lock ring from
the
output shaft

(Fig.
40).
Remove
the
governor
dis-

tributor from
the
output shaft.
24.
Remove
the
four distributor

sleeve-to-case attaching bolts. Remove

the distributor sleeve from
the
case.

Do
not
bend
or
distort
the
fluid tubes

as
the
tubes
are
removed from
the

case with
the
distributor sleeve.

25.
Remove
the
parking pawl
re-

turn spring, pawl,
and
pawl retaining

pin from
the
case (Fig.
41).

26.
Remove
the
parking gear
and

thrust washer
No. 10
from
the
case.

27.
Remove
the six
one-way clutch

outer race-to-case attaching bolts with

the tool sh^'vn
in
Fig. 42.
As the
bolts

are removed, hold
the
outer race
lo-

cated inside
the
case
in
position.
Re-

move
the
outer race
and
thrust washer

No.
9
from
the
case (Fig.
36).

Too/-

T65P.7B456-8

D1879-A

FIG.
42—Removing One-Way

Clutch
Outer Race

Attaching
Bolts

PARKING GEAR

i^ffif
THRUST WASHER NO. 10 ^*t^

$
D1399-A

FIG.
41—Parking
Pawl,
Return Spring Retaining
Pin and
Gearprocarmanuals.com

07-02-16

C4 Automatic Transmission
07-02-16

COVER SEAL

STEM NUT

SERVO PISTON STEM

PISTON RETURN SPRING PISTON AND SEAL

(SEAL BONDED TO PISTON)

FIG. 43—Low-Reverse Servo Disassembled

PARTS REPAIR OR

REPLACEMENT

During the repair of the sub-

assemblies, certain general instructions

which apply to all units of the trans-

missions must be followed. These in-

structions are given here to avoid un-

necessary repetition.

Handle all transmission parts care-

fully to avoid nicking or burring the

bearing or mating surfaces.

Lubricate all internal parts of the

transmission before assembly with

clean automatic transmission fluid. Do

not use any other lubricants except on

gaskets and thrust washers which may

be coated with vaseline to facilitate

assembly. Always install new gaskets

when assembling the transmission.

Tighten all bolts and screws to the

recommended torque as outlined in

the Specification Section.

TRANSMISSION CASE AND

LINKAGE REPAIR

Low-Reverse Servo

1.
Remove the four servo cover-

to-case attaching bolts. Remove the

vent tube and retaining clip from the

case.

2.
Remove the servo cover, cover

seal, servo piston and piston return

spring from the case (Fig. 43).

3.
The servo piston seal is bonded

to the piston. If the seal has to be re-

placed, replace the piston assembly

which includes the seal. Disassemble

the servo piston from the piston stem

by inserting a small screwdriver in the

hole of the piston stem and removing

the piston attaching nut (Fig. 44).

Position the accumulator spring and

spacer (Fig. 43) on the piston stems.

Make sure the crowned side of the

spring is facing toward the rod. Install

the new servo piston and attaching nut
COVER

D1880-A

LOW-REVERSE

PISTON

D1881-A

FIG. 44—Removing or Installing

Low-Reverse Servo Piston

on the stem, torque the nut to specifi-

cation.

4.
Place the piston return spring in

the servo bore of the case. Lubricate

the piston seal with clean transmission
fluid and install the servo pistion into

the bore of the case.

5.
Place a new cover seal on the

cover and install the servo cover. In-

stall the vent tube and retaining clip.

Install the four cover attaching bolts.

Torque the cover-to-case retaining

bolts to specifications.

Intermediate Servo

1.
Remove the transmission
identif-

ication tag and the four servo cover to

case attaching bolts.

2.
Remove the servo cover, gasket,

servo piston, and piston return spring

from the case (Fig. 45).

3.
Remove the intermediate servo

piston from the cover.

4.
Remove the seal rings from the

servo piston and cover.

5.
Install a new seal on the cover

and servo piston. Figure 46 shows the

correct servo piston and cover for

each transmission model. Lubricate

the seals with clean transmission fluid.

Install the piston into the cover. Be

careful not to damage the piston seal.

6. Install the piston return spring in

the servo bore of the case.

7.
Place a new gasket on the servo

cover. Position the servo piston and

cover assembly into the case with the

piston stem slot in a horizontal posi-

tion to engage the strut. Use two

5/16-18 bolts, 1 1/4 inch long, 180

degrees apart, to position the cover

against the case. Install two cover at-

taching bolts. Remove the two 1 1/4

V-8 ENGINE

COVER

RETURN SPRING

PISTON
COVER SEAL COVER^ GASKET

PISTON SEALS

6 CYLINDER ENGINE
COVER

D1882-A

FIG. 45—Intermediate Servo Disassembledprocarmanuals.com