ECO mode FORD MUSTANG 1969 Volume One Chassis

05-01-01
05-01-01

Clutch
GROUP

5

PART
5-1
PAGE

Drive Shaft 05-01-01

PART
5-2

General Clutch Service 05-02-01
PART
5-3

Clutch

PART
5-4

Specifications
PAGE

05-03-01

05-04-01

PART
5-1
Drive Shaft

COMPONENT INDEX

DESCRIPTION

DRIVE SHAFT ANGLE CHECK

DRIVE SHAFT BALANCE CHECK

DRIVE SHAFT BALANCING

(Single Universal Joint)

DRIVE SHAFT DISASSEMBLY
AND

OVERHAUL

Single Universal Joint — Ford Design

Double Cardan Joint — Dana Design

Double Cardan Joint — Saginaw Design

DRIVE SHAFT REMOVAL
AND

INSTALLATION

DRIVE SHAFT RUNOUT CHECK
MODEL APPLICATION
All
Models

01-01

01-01

01-01

01-02

01-01
Ford
01-04

01-04

N/A

N/A
Mercury
01-04

01-04

N/A

N/A
Meteor
01-04

01-04

N/A

N/A
Cougar
01-04

01-04

N/A

N/A
Fairlane
01-04

01-04

N/A

N/A
Falcon
01-04

01-04

N/A

N/A
Montego
01-04

01-04

N/A

N/A
Mustang
01-04

01-04

N/A

N/A
Lincoln-
Continental
N/A

N/A

01-04

N/A
Thunderbird
N/A

N/A

N/A

01-05
Continental-
Mark
III
N/A

N/A

N/A

01-05

A page number indicates that the item
is for the
vehicle listed
at the
head
of
the column.

N/A indicates that
the
item
is not
applicable
to the
vehicle listed.

DRIVE SHAFT TESTS

DRIVE LINE BALANCE CHECK

If detailed parts
of the
drive shaft

are replaced
and
shaft vibration
is en-

countered after installation, disconnect

the shaft
at the
slip yoke. Rotate
the

slip yoke
180
degrees; then, reconnect

the shaft
to the
slip yoke.
If the
vibra-

tion persists, disconnect
the
shaft
at

the rear axle companion flange.
Ro-

tate
the
companion flange
180
degrees

and reconnect
the
shaft
to the
flange.
DRIVE LINE ANGLE CHECK

Vibration
or
"shudder" which
is no-

ticeable either
on
fast acceleration
or

when coasting, using
the
engine
for a

brake,
may be
caused
by the
rear axle

housing being loose
on the
rear

springs
or by
improper pinion angle.

Refer
to
Group
3,
Part
2 for
pinion

angle checking procedures.
If the
rear

axle U-bolts (Fairlane, Montego,

Mustang, Cougar, Falcon models
only)
are
loose, torque
the
nuts
to

specification.

DRIVE SHAFT RUNOUT CHECK

Using
a
dial indicator, check
the

runout
at
each
end and in the
middle

of
the
driveshaft.
The
rear check

should
be
made
on the
small tube
sec-

tion
of the
shaft between
the
balance

weights
and the
yoke welds. Drive-

shaft runout should
not
exceed 0.035

inch
at any one
point.

DESCRIPTION

The drive shaft
is the
means
of

transferring power from
the
engine,

through
the
transmission,
to the dif-
ferential
in the
rear axle,
and
then
to

the rear wheels.
The
drive shaft incor-

porates
two
universal joints
and a
slip
yoke
(Fig. 1) or two
double cardan

universal joints,
one at
each
end of the

shaft (Figs.
2 and 3).
Each double
procarmanuals.com

05-01-03
Drive Shaft

05-01-03

DUST SEAL-4859

BALL SOCKET-4A031

UNIVERSAL

JOINT KIT-4635

WASHER

BALL SEAT i \ SPRING

BEARING \\ RETAINER

SEAL

0 \ X \
CENTER

\ \ RETAINER \ YOKE-47R4

SPRING \

BALL SOCKET-4A031

SLIP YOKE-4841

C1770-A

FIG.
3—Drive Shaft and Universal Joints Disassembled —Thunderbird, Continental Mark

REMOVAL AND INSTALLATION

REMOVAL

1.
To maintain drive line balance,

mark the relationship of the rear drive

shaft yoke and the drive pinion flange

of the axle (if the yellow alignment

marks are not visible) with the shaft

so that they may be installed in their

original positions.

2.
Disconnect the rear U-joint or

rear double cardan joint from the

companion flange. Wrap tape around

the loose bearing caps to prevent

them from falling off the spider. Pull

the drive shaft toward the rear of the

vehicle until the slip yoke clears the

transmission extension housing and

the seal. On Lincoln Continental

models, remove the three roller bear-

ing assemblies off the spline teeth in-

side the slip yoke (Fig. 3). Install the

appropriate tool in the extension

housing to prevent lubricant leakage.

INSTALLATION

1.
If either the rubber seal on the

output shaft or the seal in the end of

the transmission extension housing is
damaged in any manner, replace the

seal or seals as required. Also, if the

lugs on the axle pinion flange are

shaved or distorted so that the bear-

ings slide, replace the flange.

2.
On Lincoln Continental models,

install the bearing assemblies over the

spline teeth in the slip yoke. Lubricate

the yoke spline with B8A-19589-A lu-

bricant. This spline is sealed so that

the transmission fluid does not

"wash" away the spline lubricant

(Figs.
4 and 5). Remove the tool from
the extension housing. Install the yoke

on the transmission output shaft. Do

not allow the yoke assembly to bot-

tom on the output shaft with excessive

force.

Install the drive shaft so that the

index marks or the yellow mark (if

visible) on the yoke (light side) is in

line with the yellow mark on the com-

panion flange. This prevents vibration

which occurs when the balance of the

shaft and balance of the axle pinion

flange become additive instead of neu-

01L SEAL (AUTOMATIC TRANSMISSION ONLY)

YOKE

SNAP RING (WRAP TYPE)

. 4—Output Shaft Spline Seal — All except Continental

Mark III and Thunderbird
E U73-Cprocarmanuals.com

06-02-02
Ford Design Three Speed Transmission

06-02-02

DESCRIPTION

DESCRIPTION

The RAN and RAT Model three-

speed transmission (Fig. 1) are used

on models having 170, 200, 240, 250,

302,
351 and 390 C.I.D. engines. The

specifications of this section, Part 6-4,

lists the transmission model numbers

and vehicles in which they are used.

A transmission service identification
tag is located on the right side of the

case at the front (Fig. 2). The first

line on the tag will show the transmis-

sion model and service identification

code when required. The second line

will show the transmission serial num-

ber. Additionally, a driveline compo-

nent identification tag is attached to

the upper right side of the transmis-

sion case.
This transmission is of the fully

synchronized type, with all gears ex-

cept the reverse gear and sleeve being

in constant mesh. All forward-speed

changes are accomplished with syn-

chronizer sleeves.

The forward-speed gears are

helical-cut and are in constant mesh.

Gears used in the reverse gear train

are spur-cut and are not synchronized.

C2O87-A

FIG.
1—Three-Speed
Transmission—Typical
TRANS.
MODEL

SERIAL
NO.

C 2089-A

FIG.
2—Transmission
Identification

Tag

IN-VEHICLE ADJUSTMENTS
AND
REPAIRS

GEAR SHIFT LINKAGE

ADJUSTMENT—COLUMN

MOUNTED

1. Place the gear shift lever in the

neutral position.

2.
Loosen the two gear shift rod

adjustment nuts.

3.
Check shift levers on transmis-

sion to be in neutral position.

4.
Insert a 3/16-inch diameter

alignment tool through the first and

reverse gear shift lever, the second and

third gear shift lever and both holes

in the lower casting (Fig. 3). An align-

ment tool can be made from 3/16

inch drill rod bent to an L shape.

The extensions should be 1 inch and 2

inches from the elbow. The short end

of the tool should be inserted into the

alignment holes.

5.
Tighten the two gear shift rod

adjustment nuts.

6. Remove the alignment tool from

the levers.

7.
Start the engine and shift the se-

lector lever to each position to make

sure it operates freely.
FIG.
3—Gearshift
Linkage Adjustment—Typicalprocarmanuals.com

06-02-05

Ford Design Three Speed Transmission

06-02-05

Dummy

Shaft

FIG. 7—Removing Countershaft

7.
On 6-cylinder vehicles with a

model RAN transmission except

Ford, tap the countershaft from the

rear of the case with a dummy shaft

to remove the expansion plug from

the countershaft bore at the front of

the case.

8. Hold the countershaft gear with

a hook and with the tool shown in

Fig. 7, push the countershaft out the

rear of the case.

The countershaft (cluster) gear and

thrust washers (Fig. 21) can be low-

ered to the bottom of the case. Re-

move the countershaft from the rear

of the case.

9. On some models, remove the

snap ring that secures the speedometer

drive gear on the output shaft. Slide

the speedometer drive gear off the

shaft. Remove the speedometer drive

gear lock ball from the shaft. If the

vehicle is equipped with the new de-

sign retainer, depress the tang on the

speedometer drive gear retaining clip

and slide the gear off the output shaft

(Fig. 10).

10.
Remove the snap ring that re-

tains the output shaft bearing on the
C2070 A

shaft. Remove the bearing from the

case and shaft as shown in Fig. 8.

11.
Place both shift levers in the

neutral (center) position.

12.
Remove the set screw that se-

cures the first and reverse shift fork to

the shift rail. Slide the first and rev-

erse shift rail out through the rear of

the case.

13.
Slide the first and reverse syn-

chronizer forward as far as possible,

and rotate the first and reverse shift

fork upward. Then lift it from the

case.

14.
Move the second and third-

speed shift fork to the second-speed

position to gain access to the set

screw. Remove the set screw from the

fork. Rotate the shift rail 90 degrees

as shown in Fig. 11.

15.
Lift the interlock plug (Fig. 9)

from the case with a magnet.

16.
Tap on the inner end of the sec-

ond and third-speed shift rail to re-

move the expansion plug (Fig. 9) from

the front of the case. Remove the shift

rail.

17.
Remove the second and third-

speed shift rail detent plug and spring

from the detent bore.
18.
Pull the input gear and shaft

forward until the gear contacts the

case,
and then remove the large snap

ring. It is necessary to move the gear

forward to provide clearance when re-

moving the output shaft assembly

from RAT model transmissions. On

all other models, the input shaft and

gear is removed from the front of the

case at this time.

19.
Rotate the second and third-

speed shift fork upward, and lift it

from the case.

20.
Carefully lift the output shaft

assembly out through the top of the

case.

21.
On an RAT model, work the

input shaft bearing and gear back

through the bore in the case and out

through the top. Remove idler gear

shaft, driving from the front of the

case.

22.
Lift the reverse idler gear and

two thrust washer (Fig. 12) from the

case.
Lift the countershaft gear, thrust

washer, and dummy shaft from the

case.

23.
Remove the snap ring from the

front of the output shaft, and slide the

synchronizer and the second-speed

gear (Fig. 13) off the shaft.

24.
Remove the next snap ring and

tabbed thrust washer from the output

shaft. Then slide the first gear and

blocking ring off the shaft.

25.
Remove the next snap ring

from the output shaft. The first and

reverse synchronizer hub is a press fit

on the output shaft. To eliminate the

possibility of damaging the synchro-

nizer assembly, remove the synchro-

nizer hub using an arbor press as

shown in Fig. 21. Do not attempt to

remove or install the hub by hammer-

ing or prying.

C2071-A

FIG. 8—Removing Output Shaft

Bearing
SET SCREW
SCREW

MACHINED SURFACE

2ND AND 3RD SHIFT FORK

EXPANSION PLUG

1ST AND REVERSE

SHIFT RAIL

FIG. 9—Shift Rails and Forks Disassembled
C1798-Aprocarmanuals.com

06-02-09
Ford Design Three Speed Transmission

06-02-09

PRESS
RAM

OUTPUT SHAFT

SYNCHRONIZER
PRESS
RAM

OUTPUT SHAFT
Tool-T63P7025-A

SYNCHRONIZER

HUB

REMOVAL INSTALLATION c 1718-A

FIG. 22—Removing
and
Installing First
and
Reverse Synchronizer

5.
The
first
and
reverse synchroniz-

er
hub is a
press
fit on the
output

shaft.
To
eliminate
the
possibility
of

damaging
the
sychronizer assembly,

install
the
synchronizer
hub
with
the

teeth
end of the
gear facing toward

the rear
of the
shaft, using
an
arbor

press
as
shown
in Fig. 22. Do not at-

tempt
to
remove
or
install
the hub by

hammering
or
prying.

6. Place
the
blocking ring
on the

tapered machined surface
of the
first

gear.

7.
Slide
the
first gear onto
the out-

put shaft with
the
blocking ring

toward
the
rear
of the
shaft. Rotate

the gear
as
necessary
to
engage
the

three notches
in the
blocking ring with

the synchronizer inserts. Secure
the

first gear with
the
thrust washer
and

snap ring.

8. Slide
the
blocking ring onto
the

tapered machined surface
of the sec-

ond gear. Slide
the
second gear with

blocking ring
and the
second
and
third

gear synchronizer onto
the
mainshaft.

The tapered machined surface
of the

second gear must
be
toward
the
front

of
the
shaft. Make sure that
the

notches
in the
blocking ring engage

the synchronizer inserts. Secure
the

synchronizer with
a
snap ring.

9. Coat
the
bore
of the
input shaft

and gear with
a
thin film
of
grease.
A

thick film
of
grease will plug
the lu-

bricant holes
and
prevent lubrication

to
the
bearings. Install
the 15
bearings

(Fig.
15) in the
bore.

10.
If
working
on a RAT
model

transmission, install
the
input gear

and bearing through
the top of the

case
and
through
the
bore
in
front
of

the case.
On RAN
models,
me
input

shaft
is
installed through
the
front
of

the transmission. Install
the
snap ring

in
the
bearing groove.
11.
Position
the
output shaft
as-

sembly
in the
case. Position
the sec-

ond
and
third-speed shift fork
on the

second
and
third-speed synchronizer.

12.
Place
a
detent plug spring
and

a plug
in the
case
(Fig. 9).
Place
the

second
and
third-speed synchronizer
in

the second speed position (toward rear

of transmission). Align
the
fork
and

install
the
second
and
third-speed shift

rail.
It
will
be
necessary
to
depress
the

detent plug
to
enter
the
rail
in the

bore.
Move
the
rail inward until
the

detent plug engages
the
forward notch

(second-speed position).

13.
Secure
the
fork
to the
shaft

with
the set
screw. Move
the
synchro-

nizer
to the
neutral position.

14.
Install
the
interlock plug
in the

case.
If the
second
and
third-speed

shift rail
is in the
neutral position,
the

top
of the
interlock will
be
slightly

lower than
the
surface
of the
first
and

reverse shift rail bore.

15.
Move
the
first
and
reverse
syn-

chronizer forward
to the
first-speed

position. Place
the
first
and
reverse

shift fork
in the
groove
of the
first

and reverse synchronizer. Rotate
the

fork into position
and
install
the
first

and reverse shift rail. Move
the
rail

inward until
the
center notch (neutral)

is aligned with
the
detent bore. Secure

the fork
to the
shaft with
the set

screw.

16.
Install
a new
shift rail expan-

sion plug
in the
front
of the
case.

17.
Hold
the
input shaft
and
block-

ing ring
in
position. Then move
the

output shaft forward
to
seat
the
pilot

in
the
roller bearings
of the
input

gear.

18.
Tap the
input gear bearing into

place
in the
case while holding
the

output shaft
to
prevent
the
roller bear-

ings from dropping. Install
the
front
C1806-A

FIG. 23—Installing Output Shaft

Rear Bearing

bearing retainer
and new
gasket
mak-

ing sure that
the oil
return slot
is at

the bottom
of the
case. Install
and

torque
the
attaching screws
to
specifi-

cation.

19.
Install
the
large snap ring
on

the rear bearing. Place
the
bearing
on

the output shaft with
the
snap ring

end toward
the
rear
of the
shaft. Press

the bearing into place with
the
tool

shown
in Fig. 23.
Secure
the
bearing

to
the
shaft with
a
snap ring.

20.
On
some models, hold
the

speedometer drive gear lock ball
in

the detent
and
slide
the
speedometer

drive gear into place. Secure
the
gear

with
a
snap ring.
On
models equipped

with
the new
design retainer, install

the speedometer drive gear retaining

clip
on the
shaft with
the
lower tang

in
the
retaining hole. Align
the
groove

in
the
gear with
the
clip
and
slide
the

gear forward until
the
upper tang
on

the clip locks
the
gear
(Fig. 9).

21.
Place
the
transmission
in the

vertical position. Working through
the

drain hole
in the
bottom
of the
case,

align
the
bore
of the
countershaft gear

and
the
thrust washers with
the
bore

of
the
case with
a
screwdriver.

22.
Working from
the
rear
of the

case,
push
the
dummy shaft
out of the

countershaft gear with
the
counter-

shaft. Before
the
countershaft
is com-

pletely inserted
in the
bore, make sure

that
the
hole that accommodates
the

roll
pin is
aligned with
the
hole
in the

case.
Drive
the
shaft into place
and in-

stall
the
roll
pin. On all 8
cylinder
ve-

hicles
and
Ford
6
cylinder models,
the

countershaft
is a
press
fit in the
case.

On
6
cylinder models with model

RAN transmissions there
is a
counter-

shaft-to-case clearance
of
0.020 inch

at
the
front bore
and 0.010 at the
rearprocarmanuals.com

06-03-02
Ford Design Four-Speed Transmission

06-03-02

1 DESCRIPTION

DESCRIPTION

The Ford designed 4-speed trans-

mission
(Fig. 1) is of the
fully
syn-

chronized type with
all
gears except

the reverse sliding gear being
in con-

stant mesh.
All
forward-speed changes

are accomplished with synchronizer

sleeves.
All forward-speed gears
in the

transmission
are
helical-type, however,

the reverse sliding gear
and the
exter-

ior
of the
first-and second-speed
syn-

chronizer sleeve
are
spur-type gears.

The specifications
of
this section Part

6-4 lists
the
transmission model
num-

bers
and
vehicles
in
which they
are

used.

C 1765-B

FIG. 7—Four-Speed Transmission—Typical
A transmission service identification

tag
is
located
on the
right side
of the

case
at the
front
(Fig. 2). The
first

line
on the tag
will show
the
transmis-

sion model
and
service identification

code when required.
The
second line

will show
the
transmission serial
num-

ber. Additionally,
a
driveline compo-

nent identification
tag is
attached
to

the upper right side
of the
transmis-

sion case.

TRANS.
MODEL

O
RUG-C-2

10001
O

SERIAL NO.

C 2088-A

FIG. 2—Transmission

Identification
Tag

IN-VEHICLE ADJUSTMENTS
AND
REPAIRS

SHIFT LINKAGE ADJUSTMENT

1.
Loosen
the
three shift linkage

adjustment nuts. Install
a 1/4
inch
di-

ameter alignment tool through
the

control bracket
and
lever holes
as

shown
in Fig. 13.

An alignment tool
can be
made

from
1/4
inch diameter drill
rod
bent

to
an "L"
shape.
The
extensions
should
be 2 1/2
inch
and 3 3/4
inch

from
the
elbow. Short
end of
align-

ment
pin
should
be
inserted into
con-

trol bracket
and
linkage holes until
it

bottoms.

2.
Disconnect
the
reverse gear shift

rod from
the
shift lever.

3.
Shift
the
transmission into
re-

verse gear.
4.
Tighten
the 1-2 and 3-4
shift
rod

adjustment nuts.

5.
Connect
the
reverse gear shift

rod
to the
shift lever. Shift
the
reverse

lever
to the
neutral position
and
tight-

en
the
adjustment
nut.

6. Remove
the
alignment
pin.

7.
Check
the
gear shift lever
for a

smooth crossover.

REMOVAL
AND
INSTALLATION

REMOVAL

1.
Raise
the
vehicle
on a
hoist.

2.
Mark
the
driveshaft
so
that
it

may
be
installed
in the
same relative
position. Disconnect
the
drive shaft

from
the
rear U-joint flange. Slide
the

drive shaft
off the
transmission output

shaft
and
install
the
extension housing

seal installation tool into the extension
housing
to
prevent lubricant leakage.

See
Fig. 2,
Part
6-1.

3.
Disconnect
the
speedometer

cable from
the
extension housing.

4.
Disconnect
the
parking brakeprocarmanuals.com

06-03-03
Ford Design Four-Speed Transmission
06-03-03

cable from the equalizer lever and sep-

arate the lever from the crossmember.

5.
Remove the hairpin retainer se-

curing the cable to the transmission

rear support crossmember, and then

pull the cable assembly forward and

out of the crossmember.

6. Remove the retaining clip, flat

washer, and spring washer that se-

cures the shift rods to the shift levers.

7.
Remove the bolts that attach the

shift linkage control bracket to the ex-

tension housing and position the as-

sembly out of the way.

8. Support the engine with a trans-

mission jack and remove the extension

housing-to-engine rear support attach-

ing bolts.

9. Raise the rear of the engine high

enough to remove the weight from the

crossmember. Remove the bolts re-

taining the crossmember to the frame

side supports and remove the

crossmember.

10.
Support the transmission on a

jack and remove the bolts that attach

the transmission to the flywheel hous-

ing.

11.
Move the transmission and jack

rearward until the transmission input

shaft clears the flywheel housing. If

necessary, lower the engine enough to

obtain clearance for transmission re-

moval.

Do not depress the clutch pedal

while the transmission is removed.
INSTALLATION

1.
Make sure that the mounting

surface of the transmission and the

flywheel housing are free of dirt,

paint, and burrs. Install two guide

pins in the flywheel housing lower

mounting bolt holes. Move the trans-

mission forward on the guide pins

until the input shaft splines enter the

clutch hub splines and the case is posi-

tioned against the flywheel housing.

2.
Install the two upper transmis-

sion to flywheel housing, mounting

bolts snug, and then remove the two

guide pins. Install the two lower

mounting bolts. Torque all mounting

bolts to specifications.

3.
Raise the rear of the engine and

install the crossmember. Install and

torque the crossmember attaching

bolts to specifications, then lower the

engine.

4.
With the transmission extension

housing resting on the engine rear

support, install the transmission ex-

tension housing attaching bolts. Tor-

que the bolts to specifications.

5.
Position the shift linkage control

bracket to the extension housing and

install the attaching bolts.

6. Secure each shift rod to its re-

spective lever with the spring washer,

flat washer, and retaining pin.

7.
Guide the parking brake cable

assembly through the hole in the
transmission rear support crossmemb-

er. Secure the cable assembly to the

crossmember with the hair pin retain-

er.

8. Insert the parking brake front

cable in the equalizer and install the

equalizer in the bracket on the

crossmember. Secure the parking

brake rear cable to the equalizer.

9. Connect the speedometer cable

to the extension housing.

10.
Remove the extension housing

installation tool and slide the forward

end of the drive shaft over the trans-

mission output shaft. Connect the

drive shaft to the rear U-joint flange.

11.
Place both forward gear shift

levers and the reverse shift lever in the

neutral position and insert a 1/4 inch

diameter alignment tool in the shift

linkage alignment hole (Fig. 17). It

may be necessary to loosen the adjust-

ment nuts to install the alignment

tool. Adjust the linkage as necessary

and tighten the adjustment nuts to

specifications. Remove the alignment

tool.

12.
Fill the transmission to the

proper level with the specified lubri-

cant.

13.
Lower the car. Check tne shift

and crossover motion for full shift en-

gagement and smooth crossover oper-

ation.

MAJOR REPAIR OPERATIONS

DISASSEMBLY

1.
Mount the transmission in a

holding fixture and drain the lubri-

cant.

2.
Remove the cover attaching

screws from the case. Lift the cover

and gasket from the case.

3.
Remove the long spring that re-

tains the detent plug in the case (Fig.

4).
Remove the detent plug with a

small magnet.

4.
Remove the extension housing

attaching screws and lock washers.

Remove the housing and the gasket.

5.
Remove the input shaft bearing

retainer attaching screws. Slide the re-

tainer off the input shaft.

6. Support the countershaft gear

with a wire hook. Working from the

front of the case, push the counter-

shaft out the rear of the case as shown

in Fig. 3. Lower the countershaft to

the bottom of the case with the wire

hook. Remove the hook.
Tool-T64P-711hA

COUNTERSHAFT

C2073-A

FIG. 3—Removing Countershaft

From Case

7.
Place the first and second-speed

gear shift lever and the reverse shift

lever in the neutral position. Place the

third and fourth-speed gear shift lever

in the third-speed position.

8. Remove the attaching screw

from the third and fourth-speed shift

fork. Tap on the inner end of the shift

rail to unseal the expansion plug from
the front of the case. Then withdraw

the third and fourth-speed shift rail

from the front of the case. Do not

lose the interlock pin from the shift

rail.

9. Remove the set screw from the

first and second-speed shift fork.

Slide the first and second-speed shift

rail out the rear of the case.

10.
Remove the interlock plug and

the detent plug from the top of the

case (Fig. 4) with a magnet.

11.
On some models, remove the

snap ring that secures the speedometer

drive gear to the output shaft. Slide

the gear off the shaft, then remove the

speedometer gear drive ball. On mod-

els equipped with the new design re-

tainers, depress the tang on the speed-

ometer drive gear retaining clip and

slide the speedometer gear off the

shaft. (Fig. 5).

12.
Remove the snap ring that se-

cures the output shaft bearing to the

shaft.procarmanuals.com

07-01-03

General Transmission Service

07-01-03

COMPONENT INDEX

FMX Transmission

REAR SUPPORT (FMX)

Inspection

SHIFT POINT CHECKS

STATOR ONE-WAY CLUTCH CHECK

STATOR TO IMPELLOR INTERFERENCE

CHECK

STATOR TO TURBINE INTERFERENCE

CHECK

TRANSMISSION CLEANING

TURBINE AND STATOR END PLAY

CHECK

VACUUM DIAPHRAGM ADJUSTMENT

Altitude Compensating Type

Non-Altitude Compensating Type

VACUUM UNIT CHECK

Altitude Compensating Type

Non-Altitude Compensating Type
MODEL APPLICATION
All
Models

01-06

01-12

01-12

01-12

01-11

01-12
Ford
01-17

01-16

N/A

01-08

N/A

01-05
Mercury
N/A

N/A

N/A

01-08

N/A

01-05
Meteor
01-17

01-16

N/A

01-08

N/A

01-05
Cougar
01-17

01-16

N/A

01-08

N/A

01-05
Fairlane
01-17

01-16

N/A

01-08

N/A

01-05
Falcon
N/A

N/A

N/A

01-08

N/A

01-05
Montego
01-17

01-16

N/A

01-08

N/A

01-05
Mustang
01-17

01-16

N/A

01-08

N/A

01-05
Lincoln-
Continental
N/A

N/A

01-09

N/A

01-06

N/A
Thunderbird
N/A

N/A

01-09

N/A

01-06

N/A
Continental-
Mark
III
N/A

N/A

01-09

N/A

01-06

N/A

A page number indicates that the item is for the vehicle listed at the head of the column.

N/A indicates that the item is not applicable to the vehicle listed.

Three different three-speed trans-

missions are used. The C4 Automatic,

C6 Automatic and the FMX Auto-

matic. Part 7-1 covers testing, com-
mon adjustments and repairs, and

cleaning and inspection for the three

types of transmissions. Where there
are differences in procedures or speci-

fications, the type of transmission af-

fected will be designated.

l
AUTOMATIC TRANSMISSION TESTS

When diagnosing transmission

problems, refer to the Ford Car and

Truck Diagnosis Manual for the de-

tailed information on the items that

could be causing the problem.

The following preliminary checks

should be made before proceeding

with other diagnosis checks.

TRANSMISSION FLUID LEVEL

CHECK

1.
Make sure that the vehicle is

standing level. Then firmly apply the

parking brake.

2.
Run the engine at normal idle

speed. If the transmission fluid is cold

run the engine at fast idle speed

(about 1200 rpm) until the fluid reach-

es its normal operating temperature.

When the fluid is warm, slow the en-

gine down to normal idle speed.

3.
On a vehicle equipped with a

vacuum brake release, disconnect the

release line and plug the end of the
line;
otherwise the parking brake will

not hold the transmission in any drive

position.

4.
Shift the selector lever through

all positions, and place the lever at P.

Do not turn off the engine during the

fluid level checks.

5.
Clean all dirt from the transmis-

sion fluid dipstick cap before remov-

ing the dipstick from the filler tube.

6. Pull the dipstick out of the tube,

wipe it clean, and push it all the way

back into the tube. Be sure it is prop-

erly seated.

7.
Pull the dipstick out of the tube

again, and check the fluid level. The

fluid level should be above the ADD

mark. If necessary, add enough fluid

to the transmission through the filler

tube to bring the level between the

ADD and FULL marks on the dip-

stick. Do not overfill the transmission.

Install the dipstick, making sure it is

fully seated in the tube.
8. Connect the vacuum brake re-

lease line if so equipped, and test it

for proper operation.

FLUID AERATION CHECK

A fluid level that is too high will

cause the fluid to become aerated:

Aerated fluid will cause low control

pressure, and the aerated fluid may be

forced out the vent.

Check the transmission fluid level.

Low fluid level can affect the opera-

tion of the transmission, and may in-

dicate fluid leaks that could cause

transmission damage.

TRANSMISSION FLUID

LEAKAGE CHECKS

Check the speedometer cable con-

nection at the transmission. Replace

the rubber seal if necessary.

Leakage at the oil pan gasket often

can be stopped by tightening the at-
procarmanuals.com

J7-02-02
C4 Automatic Transmission
07-02-02

COMPONENT INDEX

Disassembly and Overhaul

REVERSE RING GEAR AND HUB

Disassembly and Overhaul

SELECTOR LEVER-CONSOLE SHIFT

Removal and Installation

THROTTLE LINKAGE
All
Models
02-22

02-26

02-08
COMPONENT INDEX

Adjustments

TRANSMISSION (Complete)

Removal and Installation

TRANSMISSION CASE BUSHING

Parts Repair or Replacement

TRANSMISSION CASE THREAD REPAIR
All
Models
02-04

02-11

02-18

02-18

DESCRIPTION

CONVERTER HOUSING,

CONVERTER
STATOR SUPPORT

FRONT PUMP CASE

INTERMEDIATE

BAND

LOW-REVERSE DRUM
-,

FORWARD CLUTCH

HUB AND RING GEAR

INPUT

SHELL
REVERSE RING GEAR

LOW REVERSE BAND

ONE-WAY

CLUTCH
GOVERNOR

DISTRIBUTOR

SLEEVE

GOVERNOR

DISTRIBUTOR

SPLINE SEAL

EXTENSION

HOUSING

SPEEDOMETER

DRIVE GEAR

GOVERNOR

REVERSE PLANET CARRIER

FRONT PLANET CARRIER

PARK TOGGLE LEVER

LOW-REVERSE SERVO PISTON

FORWARD CLUTCH

CONTROL LEVERS

FIG.
1—C4
Automatic Transmission

DESCRIPTION

Figure
1
shows
the
location
of the

converter, front pump, clutches, gear

train
and
most
of the
internal parts

used
in
the C4 transmission. The iden-

tification
tag
(Fig.
2) is
located under

the lower front intermediate servo

cover bolt.
The tag
shows
the
model

prefix
and
suffix, assembly part num-

bers,
and the
built date code.
The

service identification number indicates

changes
to
service details which affect

interchangeability when
the
transmis-

sion model
is not
changed.
For
inter-

pretation
of
this number, see the Mas-

ter Parts Catalog.
REVERSE-HIGH CLUTCH

IMPELLER CONTROL VALVE BODY

TRANSMISSION MODEL
D 1474-A

ASSEMBLY PART NO. BUILD DATE

FIG.
2—Identification
Tag

The
C4
transmission
is a
three

speed unit capable
of
providing auto-

matic upshifts
and
downshifts through
SHIFT

D1846-A

the three forward gear ratios,
and
also

capable
of
providing manual selection

of first
and
second gears.
procarmanuals.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