section 18 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

07-01-09

General Transmission Service

07-01-09

For example, on a C4 transmission,

if the pressure at 10 inches of vacuum

was 120 psi and the pressure at 1.0

inch of vacuum was 170 psi, and up-

shifts and downshifts were harsh, a di-

aphragm adjustment to reduce the di-

aphragm assembly spring force would

be required.

If the pressure readings are low, an

adjustment to increase diaphragm

spring force is required.

To increase control pressure, turn

the adjusting screw in clockwise to re-

duce control pressure, back the adjust-

ing screw out by turning it counte-

rclockwise. One complete turn of the

adjusting screw (360 degrees) will

change idle line control pressure ap-

proximately 2-3 psi. After the adjust-

ment is made, install the vacuum line

and make all the pressure checks as

outlined in the Specification Section.

The diaphragm should not be ad-

justed to provide pressure below the

ranges shown in the Specification Sec-

tion in order to change shift feel. To

do so could result in soft or slipping

shift points and damage to the trans-

mission.

ALTITUDE

COMPENSATING TYPE

The altitude—compensating di-

aphragm is provided with an adjust-

ment screw located in the vacuum

connecting tube (Fig. 15). The adjus-

table feature allows control and TV

pressures to be adjusted (within limits)

to correct soft or harsh shift feel.

Control and TV pressures are in-

creased or decreased by turning the

adjusting screw.

Before replacing or adjusting the di-

aphragm, it must first be determined

that the pressure or vacuum is actual-

ly out of specification and that the

cause of the problem is not due to

other items within the transmission or

vacuum connecting lines.

If the tests outlined in the Specifi-
cation Section have been performed

and pressures are within specification

but shift feel is unsatisfactory, or if

the pressure is too high or too low at

10 inches of vacuum, the vacuum di-

aphragm may be adjusted to improve

the shift feel.

If shifts are excessively harsh, the

diaphragm should be adjusted to re-

duce control pressure by backing off

the adjusting screw (counterclock-

wise).
If shift quality is extremely soft,

control pressure should be increased

by turning the adjusting screw inward

(clockwise).

To adjust the vacuum diaphragm to

compensate for harsh shift quality,

first check control pressure in D, 2

and 1 at 10 inches manifold vacuum

and note the pressure reading ob-

tained. Remove the T-fitting from the

vacuum hose and back off the adjust-

ing screw (counterclockwise) by one

full turn. Each full turn will reduce

control pressure by approximately 2

1/2 psi at 10 inches of vacuum. Test

the vehicle for shift feel. If shift quali-

ty is still harsh, a further adjustment

should be made to reduce control

pressure. However, control pressure

should not be reduced below the speci-

fication shown for 10 inches of vacu-

um. If control pressure has been re-

duced to the low limit and shift feel is

still excessively harsh, the clutches and

band should be checked for correct

operation.

To adjust the vacuum diaphragm to

compensate for extremely soft shifts,

record the control pressure reading at

10 inches of vacuum in D, 2 and 1,

then make an initial adjustment of

one full turn inward (clockwise). Test

the vehicle for shift feel and again ad-

just the diaphragm, if necessary. Con-

trol pressure at 10 inches of vacuum

must not exceed the high limit shown

in the Specification Section.

When the necessary adjustments

have been completed and shift feel is

satisfactory, repeat all the tests out-

ADJUSTING

SCREW

PRIMARY

THROTTLE VALVE
DIAPHRAGM

SPRING

D 1639-A

FIG. 15—Altitude Compensating Type Vacuum Diaphragm
lined in the Specification Section. All

tests must be within specifications.

The adjustable vacuum unit must not

be used to allow for adjusting control

or TV pressures that are out of speci-

fications. If these pressures are found

to be out of specifications the cause

must be determined and corrected bef-

ore making any adjustment.

NEUTRAL START SWITCH

ADJUSTMENT AND

REPLACEMENT—COLUMN SHIFT

There are two types of column-

mounted neutral start switches: A and

B.
Type A switch has a parking brake

brake-release vacuum valve. Type B

switches do not have a vacuum valve.

The switches differ in appearance but

not in operation. Both switches are

actuated by a removable steel lever,

which is installed in the shifter tube

within the steering column assembly.

The following procedures outline the

steps necessary to correctly adjust and

replace the neutral start switch.

SWITCH ADJUSTMENT

Neutral Position

1.
With the selector lever held light-

ly against the neutral stop, attempt to

start the engine. If the engine starts

while holding the lever but does not

start when the lever is released, the

shift linkage should be adjusted. If the

engine does not start in either condi-

tion, adjust the switch.

2.
To adjust the switch in neutral,

place the transmission selector lever

against the stop of the neutral detent

position.

3.
Loosen the two retaining screws

that locate the switch on the steering

column (Fig. 16).

4.
With the selector lever against

the neutral stop, rotate the switch

until a start in the neutral position is

obtained. Then, tighten the switch at-

taching screws to 20 in-lbs torque.

5.
With the switch properly adjust-

ed in neutral, place the selector lever

in the 1 position and push the park

reset button (Fig. 16) to the left

(counterclockwise) until it stops. The

park reset must be performed when-

ever the switch has been adjusted.

Park Position

1.
Place the selector lever in the

park position, release the lever and at-

tempt to start. If the engine does not

start, reset the park adjustment.procarmanuals.com

07-01-15

General Transmission Service

07-01-15

GOVERNOR

DRIVE BALL

POCKET

FRONT PUMP AND STATOR

SUPPORT SHAFT

D1922-A

FIG. 22—Stator to Impeller

Interference Check

snap rings are available in several

thicknesses for this purpose.

7.
Inspect the rubber seal and stop

ring at the front of the output shaft

spline. If wear or damage is evident,

replace the parts.

8. Inspect the primary sun gear for

broken or worn teeth. Inspect all

thrust surfaces and journals for scores.

Check all fluid passages (Fig. 26) for

obstructions and leakage. Inspect the

seal ring grooves for burrs.

9. Inspect the sun gear shaft splines

for burrs and wear.

10.
Check the fit of the seal rings

in the grooves of the shaft. The rings

should enter the grooves freely with-

out bind.

11.
Check the fit of the seal rings

in their respective bores. If equipped

with cast iron seal rings, a clearance

of 0.002-0.009 inch should exist be-

tween the ends of the rings.

INPUT SHAFT

FRONT PUMP AND

STATOR SUPPORT

SHAFT

CONVERTER

ASSEMBLY

D1923-A
TEAR DROP

D1935-A

FIG. 24—Correct Position of

Output Shaft Aluminum Sleeve

D1936-A

FIG. 25—Checking Output

Shaft Snap Ring Clearance
12.
Install the seal rings on the

shaft, and check for free movement in

the grooves.

PINION CARRIER, ONE-WAY

CLUTCH AND CENTER

SUPPORT (FMX

TRANSMISSION)

1.
Inspect the clutch outer race,

inner race, band surface, pinion gears,

bearings, and thrust washer (Fig. 27)

for roughness.

2.
Inspect the center support bush-

ing for roughness.

3.
Inspect the one-way clutch cage

rollers and springs for excessive wear

or damage.

PINION CARRIERS (C4 or

C6 TRANSMISSIONS)

Individual parts of the planet car-

riers are not serviceable.

1.
The pins and shafts in the planet

assemblies should be checked for loose

fit and/or complete disengagement.

Use a new planet assembly if either

condition exists. Before installing a

planet assembly, the shaft retaining

pins should be checked for adequate

staking. If staking does not appear

adequate, the pins should be restaked

before installation. When restaking,

the retaining pins must not be driven

into the carrier any further than 0.040

inch below the surface of the carrier.

2.
Inspect the pinion gears for dam-

aged or excessively worn teeth.

3.
Check for free rotation of the

pinion gears.

EXTENSION HOUSING

1.
Inspect the housing for cracks.

Inspect the gasket surface for burrs or

warpage.

2.
Inspect the bushing for scores or

wear.

3.
Inspect the rear seal for hard-

ness,
cracks, or wear. If the seal

FRONT LUBRICATION REAR LUBRICATION

CLUTCH \ CLUTCH
LUBRICATION

FRONT CLUTCH

D1937-A

FIG. 23—Stator to Turbine

Interference Check
FIG. 26—Primary Sun Gear Shaft—Cross Sectional Viewprocarmanuals.com

07-02-04
C4 Automatic Transmission

07-02-04

The transmission consists essentially

of a torque converter, planetary gear

train, two multiple disc clutches, a
one-way clutch and a hydraulic con-

trol system (Fig. 3).

The only adjustments on the trans-
mission proper are the intermediate

and low-reverse bands.

TRANSMISSION

MANUAL LEVER
2 IN-VEHICLE ADJUSTMENTS
AND
REPAIRS

CONTROL LINKAGE ADJUSTMENTS

The transmission control linkage

adjustments should be performed in

the order in which they appear in this

section of the manual.

THROTTLE AND DOWNSHIFT

LINKAGE ADJUSTMENTS

Adjusting the throttle linkage is im-

portant to be certain the throttle and

kickdown systems are properly adjust-

ed. The kickdown system should come

in when the accelerator is pressed

through detent, and not before detent.

Refer to Group 10 for detailed

throttle and downshift linkage adjust-

ment procedures.

MANUAL LINKAGE

ADJUSTMENTS

Column Shift

1.
Place the selector lever in the D

position tight against the D stop.

2.
Loosen the shift rod adjusting

nut at point A (Fig. 4 or 5).

3.
Shift the manual lever at the

transmission into the D detent posi-

tion, third from the rear.

4.
Make sure that the selector lever

has not moved from the D stop; then,

tighten the nut at point A to 10-20 ft-

lbs.

5.
Check the transmission operation

for all selector lever detent positions.

Console Shift

1.
Position the transmission selec-

tor lever in D position.

2.
Raise the vehicle and loosen the

manual lever shift rod retaining nut

(Fig. 6, 7 or 8). Move the transmis-

sion manual lever to the D position,

fourth detent position from the back

of the transmission.

3.
With the transmission selector

lever and manual lever in the D posi-

tions,
torque the attaching nut 10 to

20 ft-lbs.

4.
Check the operation of the trans-

mission in each selector lever position.

NEUTRAL START SWITCH

ADJUSTMENT—CONSOLE SHIFT

On vehicles equipped with a

column-mounted neutral start switch,

refer to Part 7-1, Section 2, for the

adjustment procedures.

FORD-METEOR

1.
With the manual linkage proper-
COLUMN SHIFT LEVER

D2020-A

FIG.
4—Manual
Linkage—Column Shift—Ford
and
Meteor

"COLUMN

SHIFT LEVER

POINT
A

SHIFT
ROD

D2021-A

FIG.
5—Typical
Manual Linkage—Column
Shift—Fairlane,

Falcon
and
Montego

ly adjusted, check the starter en-

gagement circuit in all positions. The

circuit must be open in all drive posi-

tions and closed only in park and neu-

tral.

2.
Remove the four screws and

plates securing the selector lever

handle to the lever. Remove the

handle and detent control.

3.
Remove two screws from the

rear of the console top panel. Pull the

panel back to unhook it from the

front of the console and remove the

panel.

4.
Loosen the two combination

starter neutral and back-up light

switch attaching screws (Fig. 9).

5.
Move the selector lever back and
forth until the gauge pin (No. 43 drill)

can be fully inserted into the gauge

pin holes (Fig. 9).

6. Place the transmission selector

lever firmly against the stop of the

neutral detent position.

7.
Slide the combination starter

neutral and back-up light switch for-

ward or rearward as required, until

the switch lever contacts the selector

lever actuator. If an adjustment can

not be made by rotating the switch,

loosen the actuator lever attaching

bolt and adjust the lever (Fig. 9).

8. Tighten the neutral start switch

attaching screws. If the actuator lever

was adjusted, tighten the actuator

lever bolt to 6-10 ft-lbs.procarmanuals.com

07-02-07
C4 Automatic Transmission

07-02-07

2.
Remove the selector lever handle

from the lever.

3.
Remove the trim panel from the

top of the console.

4.
Remove the cover and dial indi-

cator as an assembly.

5.
Remove the four screws that se-

cure the selector lever retainer to the

selector lever housing. Lift the retainer

from the housing.

6. Loosen the two combination

starter neutral and back-up light

switch attaching screws (Fig. 10).

7.
Move the selector lever back and

forth until the gauge pin (No. 43 drill)

can be fully inserted into the gauge

pin holes (Fig. 10).

8. Place the transmission selector

lever firmly against the stop of the

neutral detent position.

9. Slide the combination starter

neutral and back-up light switch for-

ward or rearward as required, until

the switch actuating lever contacts the

selector lever.

10.
Tighten the switch attaching

screws and remove the gauge pin.

Check for starting in the park posi-

tion.

11.
Turn the ignition key to the

ACC position and place the selector

lever in the reverse position and check

the operation of the back-up lights.

Turn the key off.

12.
Position the selector lever re-

tainer to the selector lever housing.

Install the four attaching screws.

13.
Install the cover and dial indi-

cator.

14.
Install the trim panel on the top

of the console. Install the selector

lever handle.

MUSTANG

1.
With the manual lever properly

NEUTRAL
START

SWITCH

(D1439-A

FIG. 11—Neutral Start Switch

Adjustments—Console Shift—

Mustang
adjusted, loosen the two switch attach-

ing bolts (Fig. 11).

2.
With the transmission manual

lever in neutral, rotate the switch and

insert the gauge pin (No. 43 drill

shank end) into the gauge pin holes of

the switch. The gauge pin has to be

inserted to a full 31/64 inch into the

three holes of the switch (Fig. 11).

3.
Torque the two switch attaching

bolts to specification. Remove the

gauge pin from the switch.

4.
Check the operation of the

switch. The engine should start only

with the transmission selector lever in

Neutral and Park.

NEUTRAL START SWITCH

REPLACEMENT—CONSOLE SHIFT

On vehicles equipped with a column

mounted neutral start switch, refer to

Part 7-1, Section 2, for the replace-

ment procedures.

FORD-METEOR

1.
Remove the four screws and

plates securing the selector lever

handle to the lever. Remove the

handle and detent control.

2.
Remove the two screws from the

rear of the console top panel. Pull the

panel back to unhook it from the

front of the console and remove the

panel.

3.
Remove the two screws securing

the dial indicator assembly to the se-

lector lever housing and remove the

indicator assembly.

4.
Disconnect the neutral start

switch wires at the plug connector.

Remove the wires from under the re-

taining clip.

5.
Remove the two screws securing

the neutral start switch to the selector

lever housing and remove the switch

(Fig. 9).

6. Position the neutral start switch

to the selector lever housing and in-

stall the two attaching screws.

7.
Adjust the neutral start switch as

outlined under the Neutral Start

Switch Adjustment procedures in this

section.

8. Connect the neutral start switch

wires to the plug connector. Position

the wires in the retaining clip and

close the clip.

9. Place the console top panel on

the console and install the retaining

screws.

10.
Position the selector lever de-

tent control and handle on the selector

lever and secure with the four plates

and attaching screws.

FAIRLANE-MONTEGO

1.
Remove the selector lever handle

from the lever.
2.
Remove the trim panel from the

top of the console.

3.
Remove the cover and dial indi-

cator as an assembly.

4.
Remove the four screws that se-

cure the selector lever retainer to the

selector lever housing. Lift the retainer

from the housing.

5.
Remove the two screws securing

the neutral start switch to the selector

lever housing. Disconnect the neutral

start switch wires at the plug connec-

tor and remove the switch.

6. Position the neutral start switch

to the selector lever housing and in-

stall the two attaching screws.

7.
With the selector lever in neu-

tral,
move the selector lever back and

forth until the gauge pin (No. 43 drill)

can be fully inserted into the gauge

pin holes (Fig. 10).

8. Place the transmission selector

lever firmly against the stop of the

neutral detent position.

9. Slide the combination starter

neutral and back-up light switch for-

ward or rearward as required, until

the switch actuating lever contacts the

selector lever.

10.
Tighten the switch attaching

screws and remove the gauge pin.

11.
Connect the neutral start switch

wires to the plug connector and check

for starting in the park position.

12.
Position the selector lever re-

tainer to the selector lever housing.

Install the attaching screws.

13.
Install the cover and dial indi-

cator.

14.
Install the trim panel on the top

of the console. Install the selector

lever handle

MUSTANG

1.
Remove the downshift linkage

rod from the transmission downshift

lever.

2.
Apply penetrating oil to the

downshift lever shaft and nut. Remove

the transmission downshift outer lever

retaining nut and lever (Fig. 11).

3.
Remove the two neutral start

switch attaching bolts.

4.
Disconnect the multiple wire

connector. Remove the neutral switch

from the transmission.

5.
Install the neutral start switch on

the transmission. Install the two at-

taching bolts.

6. With the transmission manual

lever in neutral, rotate the switch and

install gauge pin (No. 43 drill) into

the gauge pin hole (Fig. 11).

7.
Tighten the switch attaching

bolts to specification and remove the

gauge pin.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

07-02-16

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

07-03-05
FMX Transmission
07-03-05

IN-VEHICLE ADJUSTMENTS AND REPAIRS

CONTROL LINKAGE

ADJUSTMENTS

The transmission control linkage

adjustments should be performed in

the order in which they appear in this

section of the manual.

THROTTLE AND

DOWNSHIFT LINKAGE

ADJUSTMENTS

Adjusting the throttle linkage is im-

portant to be certain the throttle and

kickdown systems are properly adjust-

ed. The kickdown system should come

in when the accelerator is pressed

through detent, and not before detent.

Refer to Group 10 for detailed

throttle and downshift linkage adjust-

ment procedures.

MANUAL LINKAGE

ADJUSTMENT

COLUMN SHIFT

1.
Place the selector lever in the D

position tight against the stop.

2.
Loosen the shift rod adjusting

nut at point A (Fig. 4 or 5).

3.
Shift the manual lever at the

transmission into the D detent posi-

tion, third from the rear.

4.
Make sure that the selector lever

has not moved from the D stop, then

tighten the nut at point A to 10-20 ft-

lbs.

5.
Check the pointer alignment and

the transmission operation for all se-

lector lever detent positions.

CONSOLE SHIFT

1.
Position the transmission selec-

tor lever in D position.

2.
Raise the vehicle and loosen the

manual lever shift rod retaining nut

(Fig. 6 or 7). Move the transmission

manual lever to the D position, fourth

detent position from the back of the

transmission.

3.
With the transmission selector

lever and manual lever in the D posi-

tions,
torque the attaching nut 10 to

20 ft-lbs.

4.
Check the operation of the trans-

mission in each selector lever position.
COLUMN SHIFT LEVER

€>

TRANSMISSION

MANUAL LEVER

FIG. 4—Manual Linkage—Column Shift—Ford-Mteor

D2024-A

FIG. 5—Manual Linkage—Column Shift—Fairlane-Montego

NEUTRAL START SWITCH

ADJUSTMENT

CONSOLE SHIFT

On vehicles equipped with a

column-mounted neutral start switch,

refer to Part 7-1, Section 2, for the

adjustment procedures.

FAIRLANE-MONTEGO

1.
With the manual linkage proper-

ly adjusted, check the starter en-

gagement circuit in all positions. The

circuit must be open in all drive posi-

tions and closed only in park and neu-

tral.

2.
Remove the selector lever handle

from the lever.
3.
Remove the trim panel from the

top of the console.

4.
Remove the cover and dial indi-

cator as an assembly.

5.
Remove the four screws that se-

cure the selector lever retainer to the

selector lever housing. Lift the retainer

from the housing.

6. Loosen the two combination

starter neutral and back-up light

switch attaching screws (Fig. 8).

7.
Move the selector lever back and

forth until the gauge pin (No. 43 drill)

can be fully inserted into the gauge

pin holes (Fig. 8).

8. Place the transmission selector

lever firmly against the stop of the

neutral detent position.procarmanuals.com

07-03-07
FMX Transmission

07-03-07

Gauge Pin

(No.
43 Drill)

NEUTRAL START

SWITCH

ADJUSTMENT

SCREWS

D 1759-A

FIG. 8—
Neutral
Start Switch-

Console Shift—Fairlane-Montego

9. Slide the combination starter

neutral and back-up light switch for-

ward or rearward as required, until

the switch actuating lever contacts the

selector lever.

10.
Tighten the switch attaching

screws and remove the gauge pin.

Check for starting in the park posi-

tion.

11.
Turn the ignition key to the

ACC position and place the selector

lever in the reverse position and check

the operation of the back-up lights.

Turn the key off.

12.
Position the selector lever re-

tainer to the selector lever housing.

Install the four attaching screws.

13.
Install the cover and dial indi-

cator.

14.
Install the trim panel on the top

of the console. Install the selector

lever handle.

MUSTANG-COUGAR

1.
With the manual linkage proper-

ly adjusted and the engine turned off,

place the selector lever in the N (Neu-

tral) position. Then, shift the selector

lever from neutral to 1, to P (park)

and back to neutral. Shifting the se-

lector lever through this shift pattern

should adjust the switch automatical-

ly. If not, adjust it manually as fol-

lows:

2.
With the selector lever in neu-

tral,
remove the selector lever handle

attaching screw and remove the

handle (Fig. 7).

3.
Remove the dial housing attach-

ing screws and remove the housing.

4.
Remove the two pointer back-up

shield attaching screws and remove

the shield.
NEUTRAL START SWITCH

AND HARNESS ASSEMBLY

32027-A

FIG. 9—Neutral Start Switch—Console Shift—Mustang-Cougar

5.
Remove the two screws securing

the neutral start switch to the selector

lever housing.

6. Lift the switch from the housing

and move the actuator lever all the

way to the left. Then, return the actu-

ator lever to the neutral position as

shown in Figure 9.

7.
Position the neutral switch as-

sembly to the selector lever housing,

and secure with the two attaching

screws.

8. Place the selector lever in the P

(Park) position and check the opera-

tion of the switch. The engine should

start with the selector lever in the

park position. If the engine does not

start, replace the switch. Refer to the

Neutral Start Switch Replacement

procedures in this section.

9. Install the pointer back-up shield

on the housing and lever assembly.

10.
Install the dial housing on the

selector lever housing assembly.

11.
Install the selector lever.'handle.

NEUTRAL START SWITCH

REPLACEMENT-

CONSOLE SHIFT

On vehicles equipped with a

column-mounted neutral start switch,

refer to Part 7-1, Section 2, for the

replacement procedures.

FAIRLANE-MONTEGO

1.
Remove the selector lever handle

from the lever.
2.
Remove the trim panel from the

top of the console.

3.
Remove the cover and dial indi-

cator as an assembly.

4.
Remove the four screws that se-

cure the selector lever retainer to the

selector lever housing. Lift the retainer

from the housing.

5.
Remove the two screws securing

the neutral start switch to the selector

lever housing. Disconnect the neutral

start switch wires at the plug connec-

tor and remove the switch.

6. Position the neutral start switch

to the selector lever housing and in-

stall the two attaching screws.

7.
With the selector lever in neu-

tral,
move the selector lever back and

forth until the gauge pin (No. 43 drill)

can be fully inserted into the gauge

pin holes (Fig. 8).

8. Place the transmission selector

lever firmly against the stop of the

neutral detent position.

9. Slide the combination starter

neutral and back-up light switch for-

ward or rearward as required, until

the switch actuating lever contacts the

selector lever.

10.
Tighten the switch attaching

screws and remove the gauge pin.

11.
Connect the neutral start switch

wires to the plug connector and check

for starting in the park position.

12.
Position the selector lever re-

tainer to the selector lever housing.

Install the attaching screws.

13.
Install the cover and dial indi-

cator.procarmanuals.com

07-03-14
FMX Transmission

07-03-14

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 AND

CONVERTER REPLACEMENT—

FORD-METEOR

REMOVAL

1.
Drive the vehicle on a hoist, but

do not raise at this time.

2.
Remove the two upper bolts and

lock washers which attach the con-

verter housing to the engine.

3.
Raise the vehicle and remove the

cover from the lower front side of the

converter housing. Drain the fluid

from the transmission.

4.
Remove one of the converter

drain plugs. Then rotate the converter

180 degrees and remove the other

plug. Do not attempt to turn the con-

verter with a wrench on the converter

stud nuts. If desired, the converter

may be drained after the unit has been

removed from the vehicle.

5.
Disconnect the fluid filler tube

from the transmission case. Discon-

nect the vacuum hose from the vacu-

um diaphragm unit and the tube from

the extension housing clip.

6. When the fluid has stopped

draining from the transmission and

converter, remove the flywheel to con-

verter nuts and flat washers. Install

the drain plugs in the converter and

torque to specifications. Install the

converter housing front plate to hold

the converter in place when the trans-

mission is removed.

7.
Disconnect the starter cables

from the starter and remove the start-

er.

8. Disconnect the oil cooler lines

from the transmission. Remove the

transmission vent tube.

9. Disconnect the downshift linkage

from the transmission.

10.
Disconnect the selector rod from

the transmission manual lever with

T67P-7341-A.

11.
Disconnect the speedometer

cable from the extension housing, and

remove the driveshaft.
12.
Support the transmission on a

stand. Remove the engine rear support

to transmission bolts, and raise the

transmission slightly to take the

weight off the cross member. Remove

the cross member. Support the rear

part of the engine.

13.
Remove the remaining convert-

er housing to engine attaching bolts.

Move the assembly to the rear and

down to remove it.

INSTALLATION

1.
If the converter has been re-

moved from the converter housing,

carefully position the converter in the

housing, and then install the housing

lower front cover plate to prevent the

converter from slipping out of the

housing.

2.
Install the transmission vent

tube.
Rotate the converter until the

studs adjacent to the drain plugs are

in a vertical position.

3.
Rotate the flywheel as required

to align the drain plug holes with the

drain plugs in the converter. With the

transmission mounted on a support

stand, move the converter and trans-

mission assembly forward into posi-

tion, using care not to damage the fly-

wheel and the converter pilot.

4.
Install the converter lower

housing-to-engine bolts, then torque

the bolts to specification.

5.
Install the cross member.

6. Lower the transmission until the

extension housing rests on the cross

member, and then install the extension

housing-to-cross member bolts.

7.
The converter must rest squarely

against the flywheel. This indicates

that the converter pilot is not binding

in the engine crankshaft.

8. Install the converter attaching

nuts and flat washers. Install the ac-

cess plates.

9. Connect the oil cooler inlet and

outlet lines to the transmission case.

10.
Coat the front universal joint

yoke seal and spline with B8A-

19589-A lubricant, and install the

drive shaft.

11.
Connect the speedometer cable

at the transmission.

12.
Using tool T67P-7341-A install

a new grommet in the manual lever.

Then secure the manual selector rod

to the lever.

13.
Connect the downshift linkage

and bushing at the transmission

throttle lever.
14.
Install the starter motor.

15.
Connect the fluid filter tube to

the transmission case. Connect the

vacuum hose to the vacuum dia-

phragm unit and the tube to its clip.

16.
Lower the transmission support

stand. Then install the upper two con-

verter housing-to-engine bolts and

tighten them to specification.

17.
Lower the vehicle and fill the

transmission with transmission fluid,

following the recommended procedure.

18.
Check the transmission, con-

verter assembly, and fluid cooler lines

for fluid leaks, and then adjust the

manual and downshift linkages.

TRANSMISSION REPLACEMENT

WITHOUT CONVERTER—

FORD-METEOR

The frame construction of the con-

vertible will not permit the transmis-

sion to be moved rearward enough to

clear the turbine shaft from the con-

verter. For this reason, the converter

and transmission must be removed as

a unit from this model.

REMOVAL

1.
Raise the vehicle on a hoist.

2.
Drain the fluid from the trans-

mission.

3.
Disconnect the hose from the

vacuum diaphragm unit and the tube

from its clip. Disconnect the fluid fill-

er tube from the case.

4.
Remove the cover from the lower

front side of the converter housing.

5.
Remove one of the converter

drain plugs. Then rotate the converter

180 degrees and remove the other

plug. Do not attempt to turn the con-

verter with a wrench on the converter

stud nuts.

6. Disconnect the drive shaft from

the rear axle, and remove the drive

shaft.

7.
Disconnect the fluid cooler lines

from the transmission. Remove the

vent tube.

8. Disconnect the downshift linkage

at the transmission.

9. Disconnect the selector rod from

the transmission manual lever with

tool T67P-7341-A.

10.
Disconnect the speedometer

cable at the extension housing.

11.
Remove the two engine rear

support to transmission bolts.

12.
Position a transmission jack

under the transmission and raise it

slightly to take the weight off the

cross member.procarmanuals.com