1969 FORD MUSTANG check engine

07-04-09
C-6 Automatic Transmission
07-04-09

MUSTANG AND COUGAR

1.
With the manual lever properly

adjusted, loosen the two switch attach-

ing bolts (Fig. 13).

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. 13).

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

replacement procedures.

FORD, MERCURY

AND 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. 11).

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.
NEUTRAL START

SWITCH

D1459-A

FIG. 73—Neutral Start Switch

Adjustment—Console Shift—

Mustang and Cougar

10.
Position the selector lever de-

tent control and handle on the selector

lever and secure with the four plates

and attaching screws.

FAIRLANE AND 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. 12).

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 AND COUGAR

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. 13).

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. 13).

7.
Tighten the switch attaching

bolts to specification and remove the

gauge pin.

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, MERCURY

AND METEOR

1.
Raise the vehicle and disconnect

the link assembly from the selector

lever arm (Fig. 8).

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.procarmanuals.com

07-04-14
C-6 Automatic Transmission
07-04-14

taching bolt to turn the converter to

gain access to the nuts.

5.
Remove the rear mount to

crossmember attaching bolt.

6. Remove the two crossmember-

to-frame attaching bolts.

7.
Remove the two engine rear

support-to-extension housing attaching

bolts.

8. Disconnect the downshift rod

from the transmission downshift lever.

9. Disconnect the manual linkage

rod from the lever at the transmission.

On a column shift, use tool T67P-

7341-A to remove the rod.

10.
Remove the two bolts securing

the bellcrank bracket to the converter

housing.

11.
Raise the transmission with a

transmission jack to provide clearance

to remove the crossmember.

12.
Remove the rear mount from

the crossmember and remove the

crossmember from the side supports.

13.
Lower the transmission to gain

access to the oil cooler lines.

14.
Disconnect each oil line from

the fittings on the transmission.

15.
Disconnect the vacuum line

from the diaphragm located at the

right rear of the transmission. Remove

the metal line from the retaining clip

on the transmission.

16.
Disconnect the speedometer

cable from the extension housing.

17.
Remove the bolt that secures

the transmission fluid filler tube to the

cylinder block. Lift the filler tube and

the dipstick from the transmission.

18.
Secure the transmission to the

jack with the chain.

19.
Remove the converter housing-

to-cylinder block attaching bolts.

20.
Carefully move the transmission

away from the engine and, at the

same time, lower it to clear the und-

erside of the vehicle.

21.
Remove the converter and

mount the transmission in a holding

fixture.

INSTALLATION—FORD

MERCURY AND METEOR

1.
Torque the two converter drain

plugs to specification.

2.
Install the converter on the sta-

tor support.

3.
Secure the transmission to the

jack with the chain.

4.
Rotate the flywheel to place two

converter mounting stud holes that are

adjacent to the drain plug holes in a

vertical position.

5.
Rotate the converter so that the

studs and drain plugs are in alignment

with those in the flywheel.
6. Move the transmission toward

the cylinder block until they are in

contact. Install and torque the attach-

ing bolts to specification making sure

that the vacuum tube retaining clips

are properly positioned.

7.
Remove the transmission jack

chain from around the transmission.

8. Install a new Oring on the lower

end of the transmission filler tube. In-

sert the tube in the transmission case

and secure the tube to the engine with

the attaching bolt.

9. Connect the speedometer cable

to the extension housing.

10.
Connect the oil cooler lines to

the right side of transmission case.

11.
Connect the vacuum line to the

vacuum diaphragm making sure that

the metal tube is secured in the retain-

ing clip.

12.
Position the cross member on

the side supports. Position the rear

mount on the crossmember and install

the attaching bolt and nut.

13.
Secure the engine rear support

to the extension housing and torque

the bolts to specification.

14.
Lower the transmission and re-

move the jack.

15.
Secure the crossmember to the

side supports with the attaching bolts

and torque them to specification.

16.
Position the bellcrank bracket

to the converter housing and install

the two attaching bolts.

17.
Connect the downshift rod to

the transmission downshift lever.

18.
Connect the selector rod to the

manual lever at the transmission. On

a column shift, use tool T67P-7341-A

and install a new grommet in the

manual lever. Then, secure the manual

selector rod to the lever.

19.
Secure the converter-to-flywheel

attaching nuts and torque them to

specification. Use a wrench on the

crankshaft pulley attaching nut to ro-

tate the flywheel. Do not use a wrench

on the converter attaching nuts to ro-

tate it.

20.
Install the converter housing

dust shield and secure it with the at-

taching bolts.

21.
Secure the starter motor in

place with the attaching bolts. Con-

nect the cable to the terminal on the

starter.

22.
Install the driveshaft.

23.
Adjust the shift linkage as de-

tailed in Section 2.

24.
Lower the vehicle.

25.
Fill the transmission to the cor-

rect level with the specified lubricant.

Start the engine and shift the trans-

mission to all ranges, then recheck the

fluid level.
REMOVAL—FAIRLANE,

MONTEGO, MUSTANG

AND COUGAR

1.
On Mustang and Cougar, dis-

connect the neutral switch wires from

the harness connector and the retain-

ing clip on the dash.

2.
Remove the bolt that secures the

filler tube to the rear of the right

cylinder head.

3.
Raise the vehicle on a hoist or

jack stands.

4.
Remove the converter drain plug

access cover from the lower end of the

converter housing.

5.
Place a drain pan under nhe con-

verter housing and remove the two

converter drain plugs. Install the plugs

after the fluid has drained.

6. Place the drain pan under the

transmission fluid pan. Starting at the

rear of the pan and working toward

the front, loosen the attaching bolts

and allow the fluid to drain. Finally

remove all of the pan attaching bolts

except two at the front, to allow the

fluid to further drain. After the fluid

has drained, install two bolts on the

rear side of the pan to temporarily

hold it in place.

7.
Disconnect the drive shaft from

the rear axle flange and remove it

from the transmission. Install tool

T61L-7657-A in the rear of the exten-

sion housing to prevent the fluid from

leaking.

8. Disconnect the downshift rod

from the transmission downshift lever.

9. Disconnect the shift rod from the

manual lever. On a column shift, use

tool T67P-7341-A to remove the rod.

10.
Disconnect the speedometer

cable from the extension housing.

11.
Disconnect the rubber hose

from the vacuum diaphragm at the

rear of the transmission. Remove the

vacuum tube from the retaining clip at

the transmission.

12.
Disconnect the starter cable

from the terminal on the starter. Re-

move the starter attaching bolts and

remove it from the housing.

13.
Lift the fluid filler tube from

the transmission case.

14.
Remove the four converter-

to-flywheel attaching nuts.

15.
On a Mustang or Cougar, dis-

connect the complete exhaust system

and allow it to hang on the rear axle.

16.
Remove the two nuts that at-

tach the engine rear support to the

crossmember.

17.
Raise the transmission with a

jack just enough to remove the weight

from the crossmember.

18.
Remove the cotter pins from

the crossmember-to-frame side sup-procarmanuals.com

07-05-03
Specifications

07-05-03

C6 TRANSMISSION (Continued)

Manifold Vacuum

17

16

15

14

13

12

11
Barometric Pressure at 29.5 Inches <2)

T.V.

11-14

15-18

20-22

23-26

28-31

32-35

36-40
Cont.

56-69

56-75

56-S4

56-92

56-98

56-105

56-111
Barometric Pressure at 24.5 Inches ®

T.V.

0-1

2-5

7-9

10-13

15-18

19-22

23-27
Cont.

49-56

49-56

49-61

56-67

56-75

56-84

56-92

© It may not be possible to obtain 18 inches of engine vacuum at idle. For idle vacuums of less than 18 inches the following table

provides idle speed pressure specifications in D range:

£> These specifications (with altitude compensating diaphragm) apply at observed barometric pressure of 29.5 inches (nominal sea level)

© Specifications for barometric pressures of less than 29.5 inches.

At barometric pressures between 29.5 inches and 24.5 inches idle, pressures should fall between the values shown.

CHECK
SAND ADJUSTMENTS

FMX TRANSMISSION

Operation

Transmission End Play Check

Turbine and Stator End Play Check

Front Band Adjustment (Use 1/4 inch spacer

between adjustment screw and servo piston

stem)

Rear Band Adjustment, Model PHB-A.PHD

Rear Band Adjustment,

Model PHB-C, D, E, F, G, H

Primary Sun Gear Shaft Ring End Gap Check

Rear Clutch Selective Snap Ring Thicknesses
Specification

0.010-0.029 (Selective Thrust Washers Available)

PHB,
PHD-New or rebuilt 0.023 max., Used 0.030 max.®

Adjust screw to 10 in-lbs torque. Remove spacer, then tighten screw an additional 3/4 turn

and lock.

Adjust screw to 10 in-lbs torque. Remove spacer, then tighten screw an addition 3/4 turn

Adjusting Internally: Loosen internal locknut. Install spacer tool number T69P-7B193-A between

internal adjusting screw and servo piston, tighten internal adjusting screw to 24 in-lbs torque.

Back off 1 1/2 turns. Hold screw and tighten locknut. Remove spacer.

Adjusting Externally: Loosen internal locknut and reset internal adjusting screw to 0.27-0.28
inch.

Tighten internal locknut. Loosen external locknut and adjust external adjusting screw to 10 ft-lbs

torque. Back off 1 1/2 turns. Hold screw and tighten locknut.

0.002-0.009

0.060-0.064, 0.074-0.078, 0.080-0.092, 0.102-0.106

® To check end play, exert force on checking tool to compress turbine to cover thrust washer wear plate. Set indicator at zero.

C4 TRANSMISSION

Operation

Transmission End Play

Turbine and Stator End Play

Intermediate Band Adjustment

Low-Reverse Band Adjustment

Selective Snap Ring Thickness
Specification

0.008-0.042 inch (Selective Thrust Washers Available)

Model PEB -New or rebuilt 0.044 max., Used 0.060 max.

Model PEE, PEA New or rebuilt 0.023 max., Used 0.040 max.

Remove and discard lock nut. Adjust screw to 10 ft-lbs torque, then back off

1-3/4 turns. Install new lock nut and torque to specification.

Remove and discard lock nut. Adjust screw to 10 ft-lbs torque, then back off 3 turns.

Install new locknut and torque to specification.

0.102-0.106, 0.088-0.092, 0.074-0.078, 0.060-O.064procarmanuals.com