check engine light FORD MUSTANG 1969 Volume One Chassis

05-02-04
General Clutch Service

05-02-04

CLEANING AND INSPECTION

RELEASE BEARING

Wipe all oil and dirt off the release

bearing. The bearing is prelubricated

and should not be cleaned with sol-

vent.

Inspect the bearing retainer for

loose spring clips and rivets.

Inspect the release bearing assembly

for burrs which may cause the assem-

bly to drag on the transmission bear-

ing retainer. Any such burrs should be

cleaned up with fine crocus cloth. If

burrs are found, inspect the transmis-

sion input shaft bearing retainer for

evidence of scoring. Any scoring

should be polished out with crocus

cloth. Coat the bearing retainer with a

thin film of lithium-base grease

(C3VY-19586-A). Prior to release

bearing installation, apply a light film

of lithium base grease (C3VY-

19586-A) on both sides of the release

lever fork where it contacts the release

bearing hub and retaining springs.

Apply a light film of lithium base

grease (C3VY-19586-A) plate to the

release bearing surface that contacts

the pressure plate fingers. Carefully

fill the grease groove inside the bear-

ing hub with lithium base grease (no

polyethylene). Clean all excess grease

from the bore of the bearing hub. Ex-

cess grease will be forced onto the

spline by the transmission input shaft

bearing retainer and will contaminate

the clutch disc. Also, care must be

exercised when applying lubricants to

the release bearing, release bearing

hub and the release lever fork to avoid

excessive grease from contaminating

the clutch disc.

Hold the bearing inner race and ro-

tate the outer race while applying

pressure to it. If the bearing rotation

is rough or noisy, replace the bearing.

Most release bearing failures are

caused by improper clutch pedal ad-

justments. If the clutch linkage does

not have enough free travel, the re-

lease bearing will constantly touch the

release fingers and will spin whenever

the engine is running.

When installing a release bearing on

vehicles equipped with separate hub

and bearing, use the tool shown in

Fig. 5.

Release bearing failure can be

caused by the release lever contact

points being out of plane. Check the

wear on the release bearing assembly

where the release lever contacts it.

If one side of the assembly shows

more wear than the other, the release
lever is bent out of plane, or is not

centering on the bracket on the fly-

wheel housing.

Misalignment between the engine

and transmission can cause release

bearing failure. Other symptoms of

misalignment are transmission jump-

ing out of gear, especially third gear,

drive line vibration; excessive wear in

the pilot bushing, excessive clutch disc

spin time resulting in gear clash, and

excessive transmission gear wear.

PRESSURE PLATE AND COVER

Inspect the surface of the pressure

plate for burn marks, scores, or rid-

ges.
Generally, pressure plate resur-

facing is not recommended. However

minor burn marks, scores, or ridges

may be removed. During the resurfac-

ing process, the flatness of the pres-

sure plate must be maintained. If the

pressure plate is badly heat-checked or

deeply scored, replace the pressure

plate and cover assembly. Clean pres-

sure plate and flywheel surfaces with a

suitable solvent, such as alcohol to be

sure the surfaces are free from any oil

film. Do not use cleaners with petrole-

um base, and do not immerse the

pressure plate in the solvent.

Place the plate on the floor, being

careful not to score or scratch the sur-

face.
Force each individual finger

down, then release quickly. If the fin-

ger does not return quickly, a binding

condition is indicated, and the pres-

sure plate should be replaced.

The pressure plate should be lubri-

cated with a lithium-base grease be-

tween the driving lugs and the edges

of the pressure plate openings, as

shown in Fig. 6. Depress the pressure

plate fingers fully, apply the lubricant,

and then move the fingers up and

down until the lubricant is worked in.

Do not apply excessive lubricant.

CLUTCH DISC

Inspect the clutch disc facings for

oil or grease. Eliminate the source of

any oil or grease before replacing the

disc. An excessive amount of grease in

the pilot bushing or release bearing

hub will find its way to the disc fac-

ings.
Too much lubricant in the trans-

mission or a plugged transmission

vent will force the transmission lubri-

cant out the input shaft and onto the

disc facings. Also, rear main bearing

oil seal leaks or oil leaks from the fly-

wheel mounting bolts can contaminate

the clutch disc.
Inspect the clutch disc for worn or

loose facings. Check the disc for worn

or loose facings. Check the disc for

distortion and for loose rivets at the

hub.
Check for broken springs.

Springs loose enough to rattle will not

cause noise when the car is operating.

Replace the disc assembly if any of

these defects are present. Be especially

careful when installing a new disc to

avoid dropping it or contaminating it

with oil or grease.

PILOT BUSHING

Check the fit of the clutch pilot

bushing in the bore of the crankshaft.

The bushing is pressed into the

crankshaft and should not be loose.

Inspect the inner surface of the bush-

ing for wear or a bell-mouthed condi-

tion. If the bushing is worn or dam-

aged, replace the bushing with a new

service bearing. Refer to the applica-

ble engine for the replacement proce-

dure.

C 1785-A

FIG. 5—Installing Clutch Release

Bearing on Hub

PRESSURE PLATE

AND COVER

DRIVING

LUG
FLYWHEEL

C2048-A

FIG. 6—Pressure Plate Lubrication

Pointsprocarmanuals.com

05-03-03
Clutch
05-03-03

CLUTCH PEDAL

ADJUSTMENTS

Adjust
the
clutch pedal free travel

whenever
the
clutch does
not
disen-

gage properly,
or
when
new
clutch

parts
are
installed. Improper adjust-

ment
of the
clutch pedal
is one of the

most frequent causes
of
clutch failure

and
can be a
contributing factor
in

some transmission failures.

FREE TRAVEL

1.
Disconnect
the
clutch return

spring from
the
release lever.

2.
Loosen
the
release lever
rod

locknut
and
adjusting
nut
(Figs.
1, 2

and
3).

3.
Move
the
clutch release lever

rearward until
the
release bearing

lightly contacts
the
clutch pressure

plate release fingers.

4.
Adjust
the rod
length until
the

rod seats
in the
release lever pocket.

5.
Insert
the
specified feeler gauge

between
the
adjusting
nut and the

swivel sleeve. Then tighten
the
adjust-

ing
nut
against
the
gauge finger tight.

6. Tighten
the
locknut against
the

adjusting
nut,
being careful
not to di-

sturb
the
adjustment. Torque
the
lock-

nut
to
specification
and
remove
the

feeler gauge.

7.
Install
the
clutch return spring.

8. Check
the
free travel
at the
pedal

for conformance
to
specification.
Re-
adjust
if
necessary.

9.
As a
final check, measure
the

pedal free travel with
the
transmission

in neutral
and the
engine running
at

about 3000
rpm. If the
pedal free

travel
at
this speed
is not a
minimum

of
1/2
inch, readjust
the
clutch pedal

free travel. Otherwise,
the
release
fin-

gers
may
contact
the
release bearing

continuously, resulting
in
premature

bearing
and
clutch failure. Free travel

must
be
exactly
to
specification.

CLUTCH ASSIST

SPRING REPLACEMENT

(FAIRLANE, FALCON,

MONTEGO)

1.
Remove
the
cotter
pin
from
the

clutch
rod at the
clutch pedal lever
as-

sembly inside
the
passenger compart-

ment.

2.
Grasp
the
clutch pedal lever

firmly
to
prevent slipping
and
remove

the clutch
rod
from
the
lever. Allow

the clutch pedal lever
to
rest
on the

floor panel.

3.
Remove
the
forward bolt secur-

ing
the
assist spring bracket
to the

brake pedal bracket
and
loosen
the

rear bolt
two or
three turns.
Do not

remove
the
rear bolt.

4.
Grasp
the
assist spring bracket

with pliers
and
rotate upward until
the

spring
can be
separated from
the

bracket.

BRAKE PEDAL

BRACKET

CLUTCH ASSIST SPRING

BRACKET
-
7535

CLUTCH PEDAL

7519
5.
Position
the
assist spring
in the

clutch pedal spring bracket
and the

assist spring bracket. Rotate
the

spring bracket downward until
the

forward bolt holes
in the
assist spring

bracket line
up
with
the
holes
in the

brake pedal bracket
(Fig. 4).

6. Install
the
forward bolt retaining

the assist spring bracket
to the
brake

pedal bracket
and
torque
the
forward

and rear bolts
to
specification.

7.
Install
the
clutch
rod to the

clutch pedal lever
and
insert
the
cotter

pin.

CLUTCH PEDAL, PEDAL

ASSIST SPRING AND/OR

BUSHING REMOVAL

AND INSTALLATION

FORD, MERCURY,

METEOR

1.
Remove
the pin
that secures
the

clutch pedal-to-equalizer
rod to the

clutch pedal.

2.
Grasp
the
clutch pecal lever

firmly
to
prevent slipping
and
remove

the clutch
rod
from
the
lever. Allow

the clutch pedal lever
to
rest
on the

floor.

3.
Loosen
the
lower bolt securing

the assist spring bracket
to the
pedal

support bracket
two or
three turns.

Then, remove
the
upper bolt from
the

bracket.
Do not
remove
the
lower

bolt.

4.
Grasp
the
assist spring bracket

with pliers
and
rotate
it
counterclock-

wise until
the
spring
is
free
(Fig 5).

5.
Remove
the
retaining ring from

the
end of the
clutch pedal shaft. Then

remove
the
shaft, bushings
and
clutch

pedal from
the
support.

6. Remove
the
bushings from
the

pedal shaft
and
pedal support
and

transfer
the
rubber pedal
pad.

7.
After lubricating
the
pedal shaft

ASSIST SPRING

LOWER BOLT

ASSIST SPRING BRACKET-

UPPER
BOL"

C 1769-B

FIG. 4—Clutch Pedal Assembly
—
Fairlane, Montego, Falcon
C2058-A

;. 5—Removing Clutch Assist

Spring
—
Ford,
Mercury and Meteorprocarmanuals.com

05-03-04
Clutch

05-03-04

bushings, position the clutch pedal and

bushings in the pedal support.

8. Install the retaining ring on the

clutch pedal shaft.

9. Position the assist spring in the

pedal support bracket and the assist

spring bracket. Rotate the assist

spring bracket clockwise until the

upper bolt holes line up and install the

bolt. Torque both the upper and lower

bolts to specification.

10.
Check the clutch pedal free

travel and adjust as required.

MUSTANG, COUGAR

1.
Disconnect the battery ground

cable.

2.
Remove the steering column.

Refer to Group 3 of this manual for

the procedure.

3.
Remove the two capscrews re-

taining the master cylinder or booster

to the dash panel. Then remove the

two capscrews retaining the pedal sup-

port bracket to the dash panel.

4.
Working inside the vehicle, dis-

connect the clutch pedal-to-equalizer

rod at the clutch pedal by removing

the retainer and bushing.

5.
Secure the clutch pedal against

the bumper stop with a small C-clamp

as shown in Fig. 6.

6. Disconnect the stop light switch

wires at the connector.

7.
Remove the switch retainer and

slide the stop light switch off the

brake pedal pin just far enough for

the switch outer hole to clear the pin.

Then lower the switch away from the

pin.
Remove the master cylinder push

CLUTCH PEDAL ASSIST SPRING
rod, bushing and nylon washer from

the brake pedal pin.

8. Remove the screw retaining the

pedal support bracket to the top inner

cowl bracket (Fig. 6).

9. Remove the two sheet metal

screws retaining the pedal support

bracket to the dash panel.

10.
Remove the two screws retain-

ing the pedal support bracket to the

upper cowl brace and lower the pedal

support bracket away from the steer-

ing column studs.

11.
Remove the pedal support

bracket assembly from the vehicle.

12.
Mount the bracket in a vise.

13.
Remove the small C-clamp se-

curing the clutch pedal to the bumper.

Slowly pivot the pedal away from the

bumper until the assist spring can be

lifted from its seat.

14.
Remove the retainer clip from

the clutch and brake pedal shaft.

Then, remove the clutch pedal and

shaft assembly, brake pedal assembly,

and bushings from the pedal support

bracket.

15.
Apply a coating of SAE 10 en-

gine oil to the bushings and locate all

bushings in their proper places on the

brake and clutch pedal assemblies.

16.
Position the brake pedal to the

pedal support bracket. Install the

clutch and brake pedal shaft through

the pedal support and brake pedal as-

sembly. Install the retainer.

17.
Install the clutch pedal assist

spring and pivot the pedal against its

bumper stop. Secure the pedal against

the bumper with a small C-clamp as

TOP INNER COWL-TO-BRACKET

RETAINING SCREW

C2057-A

FIG.
6—Clutch
Pedal —Mustang and Couga?
shown in Fig. 6.

18.
Position the pedal support

bracket assembly to the dash panel

and to the steering column retainer

studs.

19.
Align the pedal support bracket

holes with the holes in the dash panel

and install the two sheet metal screws.

20.
Install the two capscrews at-

taching the pedal support bracket to

the upper cowl bracket.

21.
Install the screw attaching the

support bracket to the top inner cowl

bracket (Fig. 6).

22.
Install the inner nylon washer,

bushing master cylinder push rod on

the brake pedal pin. Position the stop

light switch so that it straddles the

push rod with the switch slot on the

pedal pin and the switch outer hole

just clearing the pin. Slide the switch

completely onto the pin, and install

the outer nylon washer. Secure with

the self-locking pin.

23.
Connect the stop light switch

wires to the connector and install the

wires to the retaining clip.

24.
Connect the clutch pedal-

to-equalizer rod to the clutch pedal

assembly with the bushing and retain-

er and remove the C-clamp from the

bracket.

25.
Working from the engine side

of the dash panel, install the two cap-

screws attaching the pedal support

bracket to the dash panel. Then install

the two screws attaching the master

cylinder to the dash panel.

26.
Install the steering column.

Refer to Group 3 of this manual for

the procedure.

27.
Adjust the clutch pedal free

travel.

28.
Check the brake pedal free

height and travel measurements

(Group 2).

29.
Connect the battery ground

cable.

CLUTCH PEDAL AND/OR

BUSHING REMOVAL

AND INSTALLATION

MOM EGO, FALCON

FAIRLANF

1.
Remove the retaining clip (Fig.

2) that secures the equalizer rod to the

clutch pedal. Disconnect the rod from

the pedal.

2.
Remove the lower bolt retaining

the assist spring bracket to the pedal

support. Then, loosen the upper

bracket retaining bolt (approximately

4 turns) and disconnect the spring

from the clutch pedal and bracket.

3.
Disconnect the brake pedal push

rod from the brake pedal.procarmanuals.com

05-03-06
Clutch

05-03-06

8. Remove the starter cable then

remove the starter motor from the fly-

wheel housing.

9. Remove the bolts that secure the

engine rear plate to the front lower

part of the flywheel housing.

10.
Remove the flywheel housing

lower cover (390 CID housing only).

11.
Remove the bolts that attach

the housing to the cylinder block.

12.
Move the housing back just far

enough to clear the pressure plate,

then move it to the right to free the

pivot from the clutch equalizer bar. Be

careful not to disturb the linkage and

assist spring.

13.
Loosen the six pressure plate

cover attaching bolts evenly to release

the spring tension. If the same pres-

sure plate and cover is to be installed

after the clutch is overhauled, mark

the cover and flywheel so that the

pressure plate can be installed in the

same position.

14.
Remove the pressure plate and

the clutch disc from the flywheel.

CLUTCH INSTALLATION

1.
Install the clutch release lever if

it was removed.

2.
Place the clutch disc, and pres-

sure plate assembly in position on the

flywheel. Start the cover attaching

bolts to hold the pieces in place, but

do not tighten them. Avoid touching

the clutch disc facing, dropping the

parts or contaminating them with oil

or grease as clutch chatter may result.

3.
Align the clutch disc with the

tool shown in Fig. 7, and alternately

tighten the bolts a few turns at a time

until they are all tight. Then torque

the six pressure plate cover attaching

bolts to specification before removing

the tool.
4.
Apply a light film of grease

(C3VY-19586-A) to the outside diam-

eter of the transmission front bearing

retainer. Apply a light film of grease

(C3VY-19586-A) to both sides of the

release lever fork where it contacts the

release bearing bore spring clips.

Apply a light film of grease to the re-

lease bearing surface that contacts the

pressure plate release fingers. Fill the

grease groove of the release bearing

hub with lithium base grease (C3VY-

19586-A). Clean all excess grease

from inside the bore of bearing hub.

Excess grease will be forced onto the

spline by the transmission input shaft

bearing retainer and will contaminate

the clutch disc. Also, place the release

bearing and hub on the release lever.

5.
Make certain that the flywheel

housing and the cylinder block mount-

ing surfaces are clean. Position the

felt washer on the pivot in the fly-

wheel housing. Slip the pivot into the

clutch equalizer shaft being careful

not to disturb the linkage and at the

same time position the housing on the

dowels in the cylinder block. Install

and torque the attaching bolts to spec-

ification.

6. Install the starting motor and

connect the cable.

7.
The mounting surfaces of the

transmission and the flywheel housing

must be free of dirt, paint, and burrs.

Install two guide pins in the flywheel

housing lower mounting bolt holes.

Move the transmission forward on the

guide pins until it is tightly positioned

against the flywheel housing.

8. Install the two upper mounting

bolts.
Then, remove the guide pins

and install the two lower mounting

bolts.
Torque all the bolts to specifica-

tion.

9. Raise the rear of the engine and
install the crossmember. Install and

torque the crossmember attaching

bolts to specifications, then lower the

engine.

10.
Install the extension housing-

to-engine rear support attaching bolts.

Torque the bolts to specification.

11.
Remove the transmission jack

and connect the parking brake cable.

12.
If the vehicle is equipped with a

four-speed transmission, connect the

gear shift linkage control bracket to

the extension housing.

13.
Connect the gear shift rods to

the transmission. Adjust the shift link-

age as required.

14.
Connect the release lever retain-

ing spring. Install the flywheel housing

cover (390 CID housing only).

15.
Remove the tool from the

transmission output shaft and install

the drive shaft.

16.
Check the clutch pedal free

travel.

CLUTCH ARBOR CLUTCH DISC

PRESSURE PLATE

C 1788-A

FIG. 7—Installing Clutch Disc —

Typicalprocarmanuals.com

07-01-04
General Transmission Service

07-01-04

taching bolts to the proper torque. If

necessary, replace the gasket.

Check the fluid filler tube connec-

tion at the transmission case or pan.

If leakage is found here, install a new

O-ring or tighten the fitting to the

specified torque.

Check the fluid lines and fittings

between the transmission and the

cooler in the radiator tank for loose-

ness,
wear, or damage. If leakage can-

not be stopped by tightening a fitting,

replace the damaged parts.

Check the engine coolant in the ra-

diator. If transmission fluid is present

in the coolant, the cooler in the radia-

tor is probably leaking.

The cooler can be further checked

for leaks by disconnecting the lines

from the cooler fittings and applying

50-75 psi air pressure to the fittings.

Remove the radiator cap to relieve the

pressure build at the exterior of the oil

cooler tank. If the cooler is leaking

and will not hold this pressure the

cooler must be replaced. Cooler re-

placement is described in the Cooling

System Section of Group 11.

If leakage is found at either the

downshift control lever shaft or the

manual lever shaft, replace either or

both seals.

Inspect the pipe plug on the left

side of the transmission case at the

front. If the plug shows leakage, tor-

que the plug to specifications. If tight-

ening does not stop the leaks, replace

the plug. On a C6 transmission, a TV

pressure plug is also provided on the

right rear side of the case.

When converter drain plugs leak,

remove drain plugs with a six-point

wrench. Coat the threads with FoMo-

Co Perfect Seal Sealing Compound or

its equivalent, and install the plugs.

Torque the drain plugs to specifica-

tion. Fluid leakage from the converter

housing may be caused by engine oil

leaking past the rear main bearing or

from oil gallery plugs, or power steer-

ing oil leakage from steering system.

Be sure to determine the exact cause

of the leak before repair procedures

are started.

Oil-soluble aniline or fluorescent dyes

premixed at the rate of 1/2 teaspoon

of dye powder to 1/2 pint of transmis-

sion fluid have proved helpful in locat-

ing the source of the fluid leakage.

Such dyes may be used to determine

whether an engine oil or transmission

fluid leak is present or if the fluid in

the oil cooler leaks into the engine

coolant system. A black light, how-

ever, must be used with the fluorescent

dye solution.
DISHED OR

FLAT WASHER

" O.D.,
a" STEEL PLATE

5/8"X \W,

DRILL TO SUIT
HEX. HEAD SCREW

3/8"-24 X Vl

HEX. NUT W—
24

WELD

TOGETHER

WING
NUT

>/2"_13
THREAD

CHAIN,
10"
LONG
RUBBER PLUG

1
Vi" DIA. X 2"

LONG Vl"

HOLE THRU

APPROXIMATELY

40 DUROMETER
FLAT WASHER

Vs" O.D.

PLUG

VALVE
STANDARD BOLT

W-13
X 4Vl"

LONG SQUARE

THREAD
END

REMOVE HEAD

AND WELD
TO

WASHER

STANDARD 1/8" FITTING-87971-S FOR

RETAPPED DRAIN PLUG THREADS-USE

1/4" OVERSIZE FITTING-87973-S

D 1067-B
WELD TOGETHER

SECURELY—MUST

NOT LEAK

FIG. 2—Converter Leak Checking Tool

CONVERTER LEAKAGE

CHECK

If there are indications that the

welds on the torque converter are

leaking, the converter will have to be

removed and the following check

made before the unit is replaced.

A leak checking tool (Fig. 2) can be

made from standard parts. The tool

can be used to check all converters.

1.
Install the plug in the converter

(Fig. 3) and expand it by tightening

the wing nut. Attach the safety chains.

2.
Install the air valve in one of the

drain plug holes.

3.
Introduce air pressure into the

converter. Check the pressure with a

tire gauge and adjust it to 20 psi.

4.
Place the converter in a tank of

water. Observe the weld areas for

bubbles. If no bubbles are observed, it

may be assumed that the welds are

not leaking.

ENGINE IDLE SPEED CHECK

Check and, if necessary, adjust the

engine idle speed, using the procedure

given in Group 10.

If the idle speed is too low, the en-

gine will run roughly. An idle speed

that is too high will cause the vehicle

to creep, have harsh engagements and

harsh closed-throttle downshifts.
ANTI-STALL DASHPOT

CLEARANCE CHECK

After the engine idle speed has been

properly adjusted, check the anti-stall

dashpot clearance. Follow the proce-

dure given in Group 10 for checking

and adjusting this clearance.

MANUAL LINKAGE CHECKS

Correct manual linkage adjustment

is necessary to position the manual

valve for proper fluid pressure direc-

tion to the different transmission com-

ponents. Improperly adjusted manual

Tire Pressure Gauge

D1921-A

FIG. 3—Converter Leak Checking

Tool Installationprocarmanuals.com

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

07-02-07
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

07-02-08
C4 Automatic Transmission

07-02-08

8. Install the outer downshift lever

and attaching nut, and torque the nut

to specification. Install the downshift

linkage rod to the downshift lever.

9. Install the switch wires. Connect

the wire multiple connector. Check

the operation of the switch in each de-

tent position. The engine should start

only with the transmission selector

lever in N (neutral) and P (park).

SELECTOR LEVER

REPLACEMENT—CONSOLE SHIFT

FORD-METEOR

1.
Raise the vehicle and disconnect

the link assembly from the selector

lever arm (Fig. 6).

2.
Lower the vehicle. Remove the

four screws and plates securing the se-

lector lever handle to the lever. Re-

move the handle and detent control.

3.
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.

4.
Disconnect the neutral start

switch wires at the plug connector.

Disconnect the bulb socket from the

quadrant.

5.
Remove the four bolts that at-

tach the selector lever housing to the

floor pan and remove the selector

lever and housing.

6. Position the new selector lever

and housing assembly on the floor pan

and install the attaching bolts.

7.
Connect the bulb socket to the

quadrant and the neutral start switch

wires to the plug connector.

8. Raise the vehicle and secure the

link assembly to the selector lever arm

with the bushing, insulator, flat wash-

er and cotter pin (Fig. 6). Lower the

vehicle.

9. Place the console top panel on

the console and install the retaining

screws.

10.
Position the selector lever de-

tr*rtt control and handle on the selector

lever and secure with the four plates

and attaching screws.

FAIRLANE-MONTEGO

1.
Raise the vehicle on a hoist or

jack stands.

2.
Remove the retainer that secures

the manual linkage rod to the lower

end of the manual lever (Fig. 7).

3.
Remove the flat washer and two

insulator washers and disconnect the

rod from the arm.

4.
Working from inside of the vehi-

cle,
remove the selector lever handle

attaching screw. Lift the handle off

the selector lever.
DETENT PAWL

LOCK NUT

DETENT PAWL

ADJUSTMENT SCREW

DETENT PLATE

D 1644-A

FIG. 72—Typical Selector Lever Detent Pawl Adjustment

5.
Remove the console trim panel

from the top of the console. Remove

the console retaining screws and re-

move the console.

6. Remove the cover and dial indi-

cator as an assembly.

7.
Remove the four screws that se-

cure the selector lever retainer to the

selector lever housing. Lift the retainer

from the housing.

8. Disconnect the neutral start

switch wires at the plug connector.

Disconnect the bulb socket from the

selector lever housing.

9. Remove the three bolts that se-

cure the selector lever control housing

to the console. Lift the selector lever

housing from the console.

10.
Remove the selector lever to

housing attaching nut. Remove the

lever from the housing.

11.
Install the selector lever in the

housing and install the attaching nut.

Torque the nut to 20 to 25 ft-31bs.

12.
Install the selector lever handle.

13.
Position the selector lever as

shown in Figure 12. With a feeler

gauge, check the clearance between

the detent pawl and plate. The clear-

ance should be 0.005 to 0.010 inch. If

necessary adjust the height of the de-

tent pawl as shown in Figure 12.

14.
Remove the handle from the se-

lector lever.

15.
Position the selector lever hous-

ing in the console and install the three

attaching bolts. Do not tighten the at-

taching bolts at this time.

16.
Connect the bulb socket to the

selector lever housing and the neutral

start switch wires to the plug connec-

tor.

17.
Position the selector lever re-

tainer to the selector lever housing.

Install the four attaching screws.

18.
Install the cover and dial indi-

cator.
19.
Place the console in position

and install the retaining bolts. Tighten

the selector lever housing attaching

bolts.

20.
Position the console trim panel

and secure it with the attaching

screws.

21.
Install the handle and the but-

ton on the selector lever. Secure the

handle with the set screw.

22.
Secure the manual linkage rod

to the arm with two insulating wash-

ers,
a flat washer and a retainer (Fig.

7).

23.
Adjust the linkage as required.

J r the vehicle.

MUSTANG

1.
Raise the vehicle and remove the

manual lever control rod attaching nut

(Fig. 8).

2.
Lower the vehicle, remove the se-

lector lever handle attaching screw.

3.
Remove the dial housing attach-

ing screws and the housing.

4.
Remove the two pointer back-up

shield attaching screws and remove

the shield.

5.
Disconnect the dial indicator

light.

6. Remove the selector housing and

lever assembly attaching bolts. Re-

move the selector lever and housing.

7.
Remove the selector lever to

housing attaching nut. Remove the

lever from the housing.

8. Install the selector lever in the

housing and install the attaching nut.

Torque the nut to 20 to 25 ft-lbs.

9. Install the selector lever handle.

10.
Position the selector lever as

shown in Figure 12. With a feeler

gauge check the clearance between the

detent pawl and plate. The clearance

should be 0.005 to 0.010 inch. If nec-

essary adjust the height of the detent

pawl as shown in Figure 12.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