1969 FORD MUSTANG lock

07-04-15
C-6
Automatic Transmission
07-04-15

port attaching nuts and remove the

nuts.
Lift the crossmember from the

frame side supports.

19.
Remove the bolts that attach

the engine rear support to the exten-

sion housing and remove the support.

20.
Lower the transmission, then

disconnect the fluid cooler lines from

the transmission case.

21.
Secure the transmission to the

jack with a chain.

22.
Remove the six bolts that at-

tach the converter housing to the cyl-

inder block.

23.
Move the jack rearward until

the transmission clears the engine,

then tip it forward to provide clear-

ance. Lower the transmission and re-

move it from under the vehicle.

24.
Remove the converter from the

transmission. Mount the transmission

in a holding fixture if repairs are nec-

essary.

INSTALLATION—FAIRLANE,

MONTEGO,
MUSTANG

AND COUGAR

1. Mount the transmission in a

transmission jack and secure it with a

safety chain.

2.
Install the converter on the front

pump.

3.
Rotate the flywheel so that the

drain plug holes are in a vertical posi-

tion. Rotate the converter so that the

drain plugs are in the same relative

position as the drain plug holes in the

flywheel.

4.
Roll the transmission into posi-

tion under the vehicle and raise it to

alignment with the engine. Move it

forward until the converter housing

contacts the cylinder block. Install

and torque the converter-to-cylinder

block attaching bolts.

5.
Remove the jack safety chain

from the transmission.

6. Connect the two fluid cooler

lines to the fittings in the transmission

case.

7.
Secure the engine rear support to

the extension housing with the attach-

ing bolts. Torque the bolts to specifi-

cation.

8. Position the crossmember on the

frame side supports and install and

tighten the attaching nuts to specifica-

tion. Install cotter Dins to retain the

nuts.

9. Remove the transmission jack

from under the vehicle. Install and

torque the engine rear support-

to-crossmember attaching nuts.

10.
Install the exhaust system on

Mustang and Cougar.
11.
Install the converter-to-flywheel

attaching nuts and torque them to

specifications. Tighten the drain plugs

to specification.

12.
Secure the converter drain plug

access cover to the lower end of the

converter housing with the attaching

bolts.

13.
Install a new O-ring on the

lower end of the fluid filler tube. Dip

the O-ring in clean automatic trans-

mission fluid and insert the filler tube

in the transmission case.

14.
Secure the starter to the con-

verter housing. Connect the cable to

the terminal on the starter.

15.
Connect the speedometer cable

to the extension housing.

16.
Connect the shift 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.

17.
Connect the downshift rod to

the lever on the transmission. Adjust

the rod.

18.
Remove the tool from the ex-

tension housing and install the drive

shaft.

19.
Lower the vehicle.

20.
Working from the engine com-

partment, secure the fluid filler tube

to the rear of the right cylinder head

with the attaching bolt.

21.
On Mustang and Cougar, con-

nect the neutral switch wires to the

harness. Secure the wires to the dash

with the retaining clip.

22.
Fill the transmission with the

specified lubricant as detailed in Part

7-1.

REMOVAL—THUNDERBIRD

1. Working from the engine com-

partment, remove the fluid filler tube

bracket attaching screw that secures it

to the rear of the right cylinder head.

Lift the tube and dipstick from the

transmission.

2.
Remove the starting motor upper

attaching bolt using a long extension.

3.
Remove the two converter hous-

ing upper attaching bolts.

4.
Raise the vehicle on a hoist or

stands.

5.
Remove the dust shield from the

front lower end of the converter hous-

ing.

6. Crank the engine until one of the

converter drain plugs is accessible.

Then, remove the plug.

7.
Crank the engine until the other

plug is at the bottom. Place a drain

pan to catch the fluid, then remove

the pan and allow the fluid to drain.
8. Remove the drive shaft.

9. Remove the frame side rail sup-

port brace attaching bolts and remove

the brace.

10.
After the fluid has been drained

from the converter, install the plug.

11.
Place the drain pan under the

transmission pan and loosen the at-

taching bolts and allow the fluid to

drain. Finally remove all of the pan

attaching bolts except two, to allow

the oil to further drain. After the fluid

has drained, install two bolts on the

opposite side of the pan to temporari-

ly hold it in place.

12.
Remove the converter-

to-flywheel attaching nuts.

13.
Disconnect the downshift link-

age from the transmission downshift

lever.

14.
Using tool T67P-7341-A, re-

move the selector rod from the manu-

al lever.

15.
Remove the two screws that at-

tach the shift rod bellcrank bracket to

the converter housing and remove the

bracket.

16.
Disconnect the vacuum dia-

phragm hose from the upper end of

the vacuum tube.

17.
Disconnect the speedometer

cable from the extension housing and

place it to one side.

18.
Remove the starting motor two

lower attaching bolts and place the

motor to one side.

19.
Disconnect the two oil cooler

lines from the right side of the trans-

mission.

20.
Disconnect the muffler inlet

pipes at the exhaust manifolds and

allow the pipes to hang.

21.
Remove the vibration absorber

from the extension housing.

22.
Remove the two engine rear

support-to-extension housing attaching

bolts.

23.
Place a transmission jack under

the transmission and raise it just

enough to remove the weight from the

support.

24.
Remove the two support attach-

ing bolts and remove the support.

25.
Lower the jack just enough to

remove the weight.

26.
Remove the four remaining

converter housing-to-cylinder block at-

taching bolts and the accelerator link-

age stop from the left side of the

housing.

27.
Carefully lower the transmis-

sion and remove it from under the ve-

hicle.

28.
Remove the converter and

mount the transmission in a holding

fixture.procarmanuals.com

07-04-16
C-6 Automatic Transmission

07-04-16

INSTALLATION—

THUNDERBIRD

1.
Torque the two converter drain

plugs to specification.

2.
Install the converter on the sta-

tor support.

3.
Secure the transmission on a

transmission jack.

4.
Rotate the converter so that the

studs and drain plugs are in alignment

with their holes in the flywheel.

5.
Move the transmission toward

the cylinder block until they contact

each other. Install and torque the at-

taching bolts to specification. Before

tightening the center bolt on the left

side,
make sure that the accelerator

linkage stop bracket is properly posi-

tioned so that the left upper bolt may

be installed later.

6. Connect the fluid cooler lines to

their fittings on the right side of the

transmission.

7.
Raise the transmission and in-

stall the engine rear support and tor-

que the bolts to specification. Make

sure that the hand brake equalizer is

positioned properly.

8. Lower the transmission and re-

move the jack.

9. Install the engine rear support-

to-extension housing attaching bolts.

10.
Install the drive shaft.

11.
Connect the speedometer cable

to the extension housing.

12.
Position the starting motor on

the converter housing and secure it

with the two lower bolts.

13.
Install the torque converter-

to-flywheel attaching nuts and torque

them to specification.

14.
Install the converter housing

dust shield.

15.
Secure the frame side rail sup-

port brace with the attaching bolts

and lock washers. Torque the bolts to

specification.

16.
Connect the downshift rod to

the transmission downshift lever.

17.
Connect the vacuum diaphragm

hose to the upper end of the vacuum

tube.

18.
Using Tool T67P-7341-A, in-

stall a new grommet in the manual

lever. Then, secure the manual selec-

tor rod to the lever.

19.
Position the vibration absorber

to the transmission extension housing

and secure it with the three attaching

bolts.

20.
Connect the muffler inlet pipes

to the exhaust manifolds.

21.
Lower the vehicle and install

the two converter housing upper bolts

and torque them to specification.
22.
Install the starting motor upper

bolt.

23.
Place a new O-ring on the end

of the fluid filler tube and insert it in

the transmission case. Secure the tube

to the rear of the right cylinder head

with the attaching screw and lock

washer.

24.
Fill the transmission to the

proper level with the specified fluids.

25.
Adjust the manual and throttle

linkage as required.

REMOVAL-

CONTINENTAL MARK III

1.
Working from the engine com-

partment, lift the fluid filler tube dio-

stick from the transmission.

2.
Raise the vehicle on a hoist or

stands.

3.
Remove the dust shield from the

front lower end of the converter hous-

ing.

4.
Crank the engine until one of the

converter drain plugs is accessible.

Then, remove the plug.

5.
Crank the engine until the other

plug is at the bottom. Place a drain

pan to catch the fluid, then remove

the pan and allow the fluid to drain.

6. Remove the driveshaft.

7.
Remove the frame side rail sup-

port brace attaching bolts and remove

the brace.

8. After the fluid has been drained

from the converter, install the plug.

9. Place the drain pan under the

transmission pan and loosen the at-

taching bolts and allow the fluid to

drain. Finally remove all of the pan

attaching bolts except two, to allow

the oil to further drain. After the fluid

has drained, install two bolts on the

opposite side of the pan to temporari-

ly hold it in place.

10.
Remove the. converter-

to-flywheel attaching nuts.

11.
Disconnect the downshift link-

age from the transmission downshift

lever.

12.
Using tool T67P-7341-A, re-

move the selector rod from the manu-

al lever.

13.
Remove the two screws that at-

tach the shift rod bellcrank bracket to

the converter housing and remove the

bracket.

14.
Disconnect the vacuum dia-

phragm hose at the transmission.

15.
Disconnect the speedometer

cable from the extension housing and

place it to one side.

16.
Remove the two idler arm

bracket retaining bolts at the frame

side rail and allow the linkage to

hang.
17.
Disconnect the starter cable

from the terminal on the starter. Re-

move the starter attaching bolts and

remove it from the housing.

18.
Remove the clip securing the oil

cooler lines to the support bracket.

19.
Disconnect the two oil cooler

lines from the right side of the trans-

mission.

20.
Disconnect the muffler inlet

pipes at the exhaust manifolds and

allow the pipes to hang.

21.
Remove the vibration absorber

from the extension housing.

22.
Remove the engine rear support

to extension housing attaching bolts.

23.
Place a transmission jack under

the transmission and raise it just

enough to remove the weight from the

support.

24.
Remove the two support attach-

ing bolts and remove the support.

25.
Lower the jack and secure the

transmission to the jack with a safety

chain.

26.
Remove the bolt that secures

the filler tube to the rear of the right

cylinder head and lift the tube from

the transmission case.

27.
Remove the six converter

housing-to-cylinder block attaching

bolts.

28.
Carefully lower the transmis-

sion and remove it from under the ve-

hicle.

29.
Remove the converter and

mount the transmission in a holding

fixture.

INSTALLATION—

CONTINENTAL MARK III

1.
Torque the two converter drain

plugs to specification.

2.
Install the converter on the sta-

tor support.

3.
Secure the transmission on a

transmission jack.

4.
Rotate the converter so that the

studs and drain plugs are in alignment

with their holes in the flywheel.

5.
Move the transmission toward

the cylinder block until they contact

each other. Install and torque the at-

taching bolts to specification

6. Remove the jack safety chain

from the transmission.

7.
Connect the fluid cooler lines to

their fittings on the right side of the

transmission.

8. Install a new O-ring on the lower

end of the fluid filler tube. Dip the

O-ring in clean automatic transmis-

sion fluid and insert the tube in the

transmission case. Install the attach-

ing bolt.procarmanuals.com

07-04-17
C-6 Automatic Transmission
07-04-17

9. Raise the transmission and in-

stall the engine rear support and tor-

que the bolts to specification.

10.
Lower the transmission and re-

move the jack.

11.
Install the engine rear support-

to-extension housing attaching bolts.

12.
Install the drive shaft.

13.
Connect the speedometer cable

to the extension housing.

14.
Connect the muffler inlet pipes

to the exhaust manifolds.

15.
Position the starting motor on

the converter housing and secure it

with the attaching bolts. Connect the

cable to the terminal on the starter.

16.
Position the idler arm bracket

to the frame side rail and install the

attaching bolts.

17.
Install the torque converter-

to-flywheel attaching nuts and torque

them to specification.

18.
Install the converter housing

dust shield.

19.
Secure the frame side rail sup-

port brace with the attaching bolts

and lock washers. Torque the bolts to

specification.

20.
Connect the downshift rod to

the transmission downshift lever.

21.
Using Tool T67P-7341-A, in-

stall a new grommet in the manual

lever. Then, secure the manual selec-

tor rod to the lever.

22.
Connect the vacuum hose to the

vacuum diaphragm.

23.
Install the oil cooler line retain-

ing clip at the transmission support.

24.
Position the vibration absorber

to the transmission extension housing

and secure it with the three attaching

bolts.

25.
Lower the vehicle.

26.
Fill the transmission to the

proper level with the specified fluids.

27.
Adjust the manual and throttle

linkage as required.

REMOVAL-

LINCOLN CONTINENTAL

1.
Raise the hood and remove the

transmission dipstick.

2.
Raise the vehicle on a hoist. Re-

move the bolt that secures the trans-

mission filler tube to the cylinder

head.

3.
Remove the bolts that attach the

reinforcement plate at the rear of the

transmission oil pan and remove the

plate.

4.
Remove the three bolts that at-

tach the manual and downshift control

rod splash shield to the side rail and

remove the shield.
5.
Place a drain pan under the

transmission. Loosen all transmission

pan attaching bolts and allow the fluid

to drain. Remove the bolts from the

rear and both sides of the pan to

allow further drainage; then, finally

remove the pan. After all fluid has

been drained, install the pan using

four attaching bolts.

6. Remove the two bolts that attach

the cover to the lower end of the con-

verter housing.

7.
Remove the two front support

bracket bolts at the converter housing.

8. Remove the two drain plugs

from the converter and allow it to

drain.

9. Remove the four nuts that attach

the converter to the flywheel.

10.
Lift the fluid filler tube from

the transmission case.

11.
Remove the two idler arm

bracket bolts from the frame side rail

and allow the idler arm to hang free.

12.
Disconnect the starter cable

from the starter. Remove the starter

attaching bolts and remove the starter.

13.
Disconnect the oil cooler lines

from the transmission.

14.
Disconnect the vacuum hose

from the diaphragm.

15.
Loosen the parking brake ad-

justing nut at the equalizer and re-

move the retracting spring. Disconnect

the rear brake cables and remove the

equalizer from the bracket.

16.
Disconnect the speedometer

cable from the extension housing.

17.
Disconnect the drive shaft from

the transmission flange and position

the shaft out of the way.

18.
Disconnect the downshift rod

from the transmission downshift lever.

19.
Using tool T67P-7341-A, re-

move the manual selector rod from

the manual lever.

20.
Remove the lower bellcrank at-

taching bolts and remove the bell-

crank.

21.
Pry the upper bellcrank out of

the converter housing and allow it to

hang free.

22.
Remove the cooler lines from

the clip at the cylinder head.

23.
Remove the converter housing-

to-cylinder block lower attaching

bolts.

24.
Remove the two nuts that at-

tach the engine rear mounts to the

crossmember.

25.
Place a transmission jack under

the transmission and raise it just high

enough to remove the weight from the

crossmember.

26.
Remove the engine rear

support-to-extension housing attaching

bolts and remove the supports.
27.
Remove the crossmember-

to-frame attaching nuts and remove

the crossmember.

28.
Secure the transmission to the

jack with the safety chain. Lower the

transmission and remove the upper

converter housing-to-cylinder block at-

taching bolts.

29.
Move the transmission away

from the cylinder block.

30.
Carefully lower the transmis-

sion and remove it from under the ve-

hicle.

31.
Remove the converter and mount

the transmission in a holding fixture.

INSTALLATION-

LINCOLN CONTINENTAL

1.
Torque the two converter drain

plugs to specification.

2.
Install the converter on the sta-

tor support.

3.
Secure the transmission on a

transmission jack.

4.
Rotate the converter so that the

studs and drain plugs are in alignment

with those in the flywheel.

5.
Move the transmission toward the

cylinder block until they contact each

other. Install and torque the attaching

bolts to specification.

6. Secure the converter to the fly-

wheel with the four attaching nuts.

Torque the nuts to specification.

7.
Secure the converter access cover

to the converter housing with the at-

taching bolts.

8. Secure the two front support

brackets to the converter housing with

the attaching bolts.

9. Raise the transmission high en-

ough to position the crossmember. In-

stall the bolts, but do not tighten at

this time.

10.
Secure the engine rear support

to the extension housing and torque

the bolts to specification. At this time,

install and torque the crossmember-

to-frame attaching nuts to specifica-

tion.

11.
Lower the transmission and in-

stall the engine rear support-

to-crossmember attaching nuts and

plates.
Torque the •"its to specifica-

tion. Remove the transmission jack.

12.
Install the upper bellcrank in

the left side of the converter housing.

13.
Position the lower bellcrank to

the transmission and floor pan and se-

cure it with the two attaching bolts.

14.
Connect the downshift rod to

transmission downshift lever.

15.
Using tool T67P-7341-A, install

a new grommet in the manual lever.

Then, secure the manual selector rod

to the lever.procarmanuals.com

07-04-18
C-6 Automatic Transmission
07-04-18

16.
Position the manual and down-

shift control rod splash shield to the

frame side rail and secure it with the

attaching bolts.

17.
Connect the speedometer cable

to the extension housing.

18.
Connect the vacuum hose to the

vacuum diaphragm and secure with a

clamp.

19.
Connect the two oil cooler lines

to the fittings on the right side of the

case.
20.
Install the cooler lines under

the clip at the cylinder head.

21.
Position the reinforcement plate

and torque the attaching bolts.

22.
Install the equalizer and park-

ing brake cables. Install the equalizer

lever retracting spring.

23.
Install the drive shaft.

24.
Install a new seal on the filler

tube and install it in the transmission

case.
Secure the filler tube to the cyl-

inder head.
25.
Install the starting motor and

connect the cable.

26.
Install the idler arm bracket-

to-frame side rail.

27.
Lower the vehicle.

28.
Fill the transmission to the cor-

rect level with the specified fluid.

29.
Adjust the manual and throttle

linkage as required.

MAJOR REPAIR OPERATIONS

DISASSEMBLY OF

TRANSMISSION

1.
Mount the transmission in hold-

ing fixture T64L-6001-A (Fig. 22).

2.
Remove the 17 fluid pan attach-

ing bolts. Remove pan and gasket.

3.
Remove the 8 valve body attach-

ing bolts (Fig. 23). Lift the valve body

from the transmission case.

4.
Attach a dial indicator to the

front pump as shown in Fig. 24. In-

stall tool T61L-7657-B in the exten-

sion housing to center the shaft.

5.
Pry the gear train to the rear of

the case and at the same time, press

the input shaft inward until it bottoms

(Fig. 24). Set the dial indicator to

read zero.

6. Pry the gear train forward (Fig.

24) and note the amount of gear train

end play on the dial indicator. Record

the end play to facilitate assembling

the transmission. Remove the dial in-

dicator from the pump and the tool

from the extension housing.

7.
Remove the vacuum diaphragm,

rod and the primary throttle valve

from the case. Slip the input shaft out

of the front pump.

8. Remove the front pump attach-

ing bolts. Pry the gear train forward

as shown in Fig. 25 to remove the

pump.

9. Loosen the band adjustment

screw and remove the two struts.

10.
Rotate the band 90 degrees co-

unterclockwise to align the ends with

the slot in the case (Fig. 26). Slide the

band off the reverse-high clutch drum.

11.
Remove the forward part of the

gear train as an assembly as shown in

Fig. 27.

12.
Remove the large snap ring that

secures the reverse planet carrier in

the low-reverse clutch hub. Lift the

planet carrier from the drum.

13.
Remove the snap ring (Fig. 28)

that secures the reverse ring gear and
D16Q3-B

FIG. 22—Transmission Mounted in Holding Fixture

hub on the output shaft. Slide the ring

gear and hub off the shaft.

14.
Rotate the low-reverse clutch

hub in a clockwise direction and at

the same time, withdraw it from the

case.

15.
Remove the reverse clutch snap

ring from the case, then remove the

clutch discs, plates and pressure plate

from the case.

16.
Remove the extension housing

attaching bolts and vent tube from the

case.
Remove the extension housing,

and gasket.

17.
Slide the output shaft assembly

from the transmission case.
18.
Remove the distributor sleeve

attaching bolts and remove the sleeve,

parking pawl gear and the thrust

washer.

If the thrust washer is staked in

place, use a sharp chisel and cut off

the metal from behind the thrust

washer. Be sure to clean the rear of

the case with air pressure or a suitable

solvent to remove any metal particles.

19.
Compress the reverse clutch pis-

ton release spring with tool T65P-

77515-A (Fig. 29). Remove the snap

ring. Remove the tool and the spring

retainer.procarmanuals.com

07-04-20

C-6 Automatic Transmission

07-04-20

SNAP RING

LOW-REVERSE

CLUTCH PISTON

Tool -

T6SL-77515-A
RETAINER Toof - T65L- 77575- A

D1610-A

FIG. 29—Compressing Reverse Clutch Spring

AIR NOZZLE

Tool- 7000- DD

LOW- REVERSE CLUTCH

APPLY PASSAGE

D1611-A

FIG. 30—Removing Low-Reverse

Clutch Piston
20.
Remove the one-way clutch

inner race attaching bolts from the

rear of the case. Remove the inner

race from inside of the case.

21.
Remove the reverse clutch pis-

ton from the case as shown in Fig. 30.

PARTS REPAIR OR

REPLACEMENT

During the repair of the sub-

assemblies, certain general instructions

which apply to all units of the trans-

mission must be followed. Following

these instructions will avoid unneces-

sary repetition.

OUTER

MANUAL LEVER

AND SHAFT

PARKING

PAWL ACTUATING

ROD

D1612-A

FIG. 31—Downshift and Manual Linkage

7"oo/ - 77288

D1613-A

FIG. 32—Installing Manual Lever

Seal
All transmission parts must be

handled carefully to avoid nicking or

burring the bearing or mating surfa-

ces.

Lubricate all internal parts of the

transmission with clean automatic

transmission fluid before assembling

them.

Do not use any other lubricants ex-

cept on gaskets and thrust washers.

These may be coated with vaseline to

facilitate assembly. Always use new

gaskets and seals when assembling a

transmission.
Tighten all bolts and screws to the

recommended torque as outlined in

the Specification Section.

TRANSMISSION CASE

AND LINKAGE

Downshift and Manual

Linkage

1.
Remove the nut and lock washer

that secures the outer downshift lever

to the transmission and remove the

lever.

2.
On a Mustang or Cougar, re-

move the two bolts that secure the

neutral safety switch to the case. In-

sert a screwdriver between the switch

and case as close as possible to the

shaft. Gently pry the switch from the

case.

3.
Slide the downshift lever out

from the inside-of the case (Fig. 31).

Remove the seal from the recess in

the manual lever shaft.

4.
Remove the C-ring that secures

the parking pawl actuating rod to the

manual lever. Remove the rod from

the case.

5.
Remove the nut that secures the

inner manual lever to the shaft. Re-

move the inner lever from the shaft.

Slide the outer lever and shaft from

the case.

6. Remove the seal from the case

with Tools T59L-1OO-B and T58L-

101-A or 7600-E.

7.
Dip the new seal in transmission

fluid and install it in the case as

shown in Fig. 32.

8. Slide the outer manual lever and

shaft in the transmission case.

9. Position the inner lever on the

shaft and install the attaching nut.

Tighten the nut to specification. In-

stall the parking pawl actuating rod

and secure it to the inner manual lever

with a C-washer.

10.
Install a new downshift lever

seal in the recess of the outer lever

shaft. Slide the downshift lever and

shaft into position.

11.
On a Mustang or Cougar, posi-

tion the neutral switch on the manual

lever and secure it with the two at-

taching bolts. Leave the attaching

bolts loose to adjust the switch after

installing the control valve.

12.
Place the outer downshift lever

on the shaft and secure it with a lock

washer and nut.procarmanuals.com

07-04-21

C-6 Automatic Transmission
07-04-21

Parking Pawl Linkage

1.
Remove the bolts that secure the

parking pawl guide plate to the case

(Fig. 33). Remove the plate.

2.
Remove the spring, parking pawl

and shaft from the case.

3.
Working from the pan mounting

surface, drill a 1/8 inch diameter hole

through the center of the cupped plug.

Pull the plug from the case with a

wire hook.

4.
Lift the end of the spring off the

park plate pin to relieve the tension.

5.
Thread a
1/4-20
inch or # 8-32

x 1 1/4 inch screw (Fig. 34) into the

par1: plate shaft. Pull the shaft from

the case with the screw.

6. Position the spring and park

plate in the case and install the shaft.

Hook the end of the spring over the

pin on the park plate.

7.
Install a new cupped washer

(Fig. 33) to retain the shaft.

8. Install the parking pawl shaft in

the case. Slip the parking pawl and

spring into place on the shaft.

9. Position the guide plate on the

case making sure that the actuating

rod is seated in the slot of the plate.

Secure the plate with two bolts and

lock washers.

Servo Apply Lever

1.
Working from inside of the

transmission case, carefully drive on

the servo apply lever shaft to remove

the cup plug. The shaft (Fig. 35) can

be withdrawn from the case by hand.

2.
Hold the servo apply lever in

position and install the new shaft.

3.
Using the fabricated tool shown

in Fig. 35, drive the cup plug into

position in the case. Be sure the plug

is flush with the shoulder of the count-

erbore. The cup plug may be coated

with Loctite, Part No. C3AZ-

19554-A, before installation.

Thread Repair-Case

Thread service kits may be pur-

chased from local jobbers or the

Heli-Coil Corporation. To repair a

damaged thread, the following proce-

dures should be carefully followed:

1.
Drill out the damaged threads

using the same size threads as the

thread OD. For example, use a 5/16-

inch drill when repairing a 5/16-18

inch thread.

2.
Select the proper special tap and

tap the drilled hole. The tap is marked

for the size of the thread being re-
GUIDE PLATE PIN SPRING CUPPED PLUG

PARKING

GEAR

SHAFT

SPRING

PARKING PAWL
PARK PLATE

D1614-A

FIG. 33—Parking Pawl Mechanism

1/4 - 20 x
1
1/4 INCH BOLT

OR #8 • 32 x 1 1/4 INCH BOLT
INSTALL CUP PLUG FLUSH WITH

SHOULDER OF COUNTERBORE

PARK PLATE

SHAFT

D 1629-B

FIG. 34—Removing Park Plate

Shaft

paired. Thus, the special tap supplied

with the repair kit marked 5/16-18

will not cut the same thread as a

standard 5/16-inch tap. It will cut a

thread large enough to accommodate

the insert, and after the insert is in-

stalled, the original thread size (5/16-

18 inch) is restored.

3.
Select the proper coil inserting

tool. These tools are marked with the

thread size being repaired. Place the

insert on the tool and adjust the sleeve

to the length of the insert being used.
INSTALLING TOOL

MAKE FROM 1/2" DIA. DRILL ROD

D 1783-A

FIG. 35—Servo Apply Lever

Installation

Press the insert against the face of

the tapped hole. Turn the tool clock-

wise and wind the insert into the hole

until the insert is one half turn below

the face.

4.
Working through the insert, bend

the insert tang straight up and down

until it breaks off at the notch.

5.
If the inserts are not properly in-

stalled, they can be removed with the

extractor tool. Place the extractor tool

in the insert so that the blade rests

against the top coil
1/4-1/2
turn awayprocarmanuals.com

07-04-22

C-6 Automatic Transmission
07-04-22

LOWER VALVE

BODY

7A101
UPPER VALVE

BODY

7A092

PLATE

7C056

PLATE

7D259

FIG. 36—Upper and Lower Valve Bodies Disassembled

Tool - T64P.7A128-A

ROLL PIN

D 1617-A

FIG. 37—Removing Manual Valve

from the end of the coil. Tap the tool

sharply with a hammer so that the

blade cuts into the insert. Exert down-

ward pressure on the tool and turn it

counterclockwise until the insert is re-

moved.

CONTROL VALVE BODY

Disassembly

1.
Remove the nine screws that at-

tach the screen to the lower valve

body and remove the screen and gas-

ket (Fig. 36).

2.
Remove the twelve screws and

the 2 plates that attach the two valve

bodies.

3.
Separate the bodies and remove

the separator plate and gasket. Be

careful not to lose the check valves

and springs.

4.
Depress the manual valve detent

spring with the tool shown in Fig. 37.
Remove the retaining pin from the

upper valve body. Remove the spring

and detent plunger.

5.
Slide the manual valve (Fig. 38)

out of the valve body.

6. Cover the downshift valve port

with a finger, then working from the

underside of the body remove the

downshift valve retainer. Remove the

spring and downshift valve.

7.
Apply pressure on the pressure

booster valve retaining plate and re-

move the two attaching screws. Slowly

release the pressure and remove the

plate, sleeve and the pressure booster

valve. Remove the two springs and the

main regulator valve from the same

bore.

8. Apply pressure on the throttle

booster valve retaining plate and re-

move the two attaching screws. Slowly

release the pressure and remove plate,

throttle booster valve and spring, and

the manual low 2-1 scheduling valve

and spring from the body.

9. Apply pressure on the remaining

valve retaining plate and remove the

eight attaching screws.

10.
Hold the valve body so that the

plate is facing upward. Slowly release

the pressure and remove the plate.

11.
When removing the various

valves from the control valve body,

keep all ports covered with your fin-

gers except the bore the valve is being

removed from. Remove the spring and

the intermediate servo modulator valve

(Fig. 38) from the valve body.

12.
Remove the intermediate servo

accumulator valve and springs.

13.
Remove the 2-3 back-out valve,

and spring.

14.
Remove the 2-3 shift valve,

spring and the throttle modulator

valve.
D1616-A

15.
Remove the 1-2 shift valve, D2

shift valve and the spring from the

valve body.

16.
Remove the coasting regulator

valve from the body.

17.
Remove the cutback control

valve.

18.
Remove the 3-2 shift timing

valve retainer and remove the plug.

Remove the 3-2 shift timing valve and

spring to complete the disassembly of

the control valve. Do not remove the

3-2 shift timing valve plug if it is

found to be peened, preventing the re-

moval of the plug and the 3-2 shift

timing valve. This condition will not

affect transmission operation and is

not cause for replacement of the main

control. The 3-2 shift timing valve is

non-functional and removal of the

plug, 3-2 shift timing valve and spring

is not required.

Assembly

1.
Place the spring 3-2 shift timing

valve and plug in the valve body if

they were previously removed. Install

the plug retainer.

2.
Place the downshift valve and

spring in the valve body. Compress

the spring and install the retainer

from the underside of the body.

3.
Place the valve body on a clean

surface and the passage side facing up.

Place the converter relief valve spring

in its bore (Fig. 39). Coat the convert-

er relief valve check valve with vase-

line and place it on top of the spring.

Place the 2-3 shift check valve ball in

its cavity. Place the throttle pressure

relief valve spring in its bore (Fig. 39).

Coat the throttle pressure relief valve

check ball with vaseline and place it

on top of the spring.procarmanuals.com

07-04-24

C-6 Automatic Transmission

07-04-24

CONVERTER PRESSURE RELIEF VALVE

THROTTLE PRESSURE

RELIEF BALL1/4 INCH

DIA. AND SPRING

CONVERTER

PRESSURE

RELIEF

SPRING

2-3 SHIFT

CHECK VALVE

D 1765-C

FIG. 39—Converter Pressure Relief Valve, Throttle Pressure Relief Valve,

and
2-3
Shift Check Valve Locations

FRONT PUMP

Tool
-
7775-AS

Tool -
T50T-
100-A

or 73-760

Tool
-T63L- 77837 -A

D 1636 -A

FIG. 40—Removing Front Pump

Seal

4.
Carefully position
the
separator

plate,
new
gasket
and the
lower valve

body
on the
upper valve body
and in-

stall
and
torque
the
attaching bolts
to

specification.

5.
Secure
the
screen
to the
lower

valve body with
the
attaching bolts

and torque them
to
specification.

6. Place
the
cutback control valve

(Fig.
38) in the
valve body.

7.
Place
the
coasting regulator

valve
in the
body.

8. Place
the
spring
D2
shift valve

and
the 1-2
shift valve
in the
body.

9. Place
the
throttle modulator

valve
and
spring
and the 2-3
shift

valve
in the
valve body.
D 1637-A

FIG. 41—Installing Front Pump

Seal

10.
Place
the
spring
and the 2-3

backout valve
in the
valve body.

11.
Place
the two
springs
and the

intermediate servo accumulator valve

in
the
valve body.

12.
Place
the
intermediate servo

modulator valve
and
spring
in the

body.

13.
Carefully place
the
valve retain-

ing plate
on the
body
and
secure
it

with
the
eight attaching screws. Tigh-

ten
the
screws
to
specification.

14.
Place
the
throttle booster valve

and spring
in the
valve body. Place

the manual
low 2-1
scheduling valve

and spring
in the
valve body
and in-
stall
the
retaining plate. Torque
the

attaching screws
to
specification.

15.
Place
the
main regulator,
two

springs, pressure booster valve
and the

sleeve
in the
valve body.

16.
Install
the
pressure booster

plate
and
torque
the two
attaching

screws
to
specification.

17.
Place
the
manual valve
in the

valve body
and
install
the
detent plug,

spring
and the
retaining
pin in the

body.

FRONT PUMP

The front seal
can be
replaced after

the pump
has
been installed
on the

transmission (Figs.
40 and 41).

Disassembly

1.
Remove
the two
seal-rings
and

the selective thrust washer (Fig.
42).

2.
Remove
the
large square-cut seal

from
the
O.D.
of the
pump housing.

3.
Remove
the 5
bolts that secure

the pump support
to the
pump hous-

ing. Lift
the
support from
the
housing.

4.
Remove
the
drive
and the
driven

gear from
the
housing.

Assembly

1.
Install
the
drive
and
driven gears

in
the
pump housing. Each gear
has

an identification mark
on one
face.

The identification mark
on
each gear

must
be
toward
the
front
of the
pump

housing.

2.
Position
the
pump support
in the

pump housing
and
install
and
torque

the five attaching bolts
to
specifica-

tion.

3.
Carefully install
two new
seal

rings
on the
pump support. Make sure

that
the
ends
of the
rings
are
engaged

to lock them
in
place. Install
a new

square-cut seal
on the O.D. of the

pump housing.

4.
Install
the
selective thrust wash-

er. Make sure that
the
correct thick-

ness selective washer
is
being used
to

obtain
the
specified
end
play.

5.
Place
the
pump
on
converter

making sure that
the
drive gear enga-

ges
the
converter
hub.
Rotate
the

pump
to
make sure that
the
gears
ro-

tate freely.

REVERSE-HIGH CLUTCH

Disassembly

1.
Separate
the
drive train
as
shown

in
Fig. 43.
Remove
the
pressure plate

retaining snap ring
as
shown
in Fig.

44.procarmanuals.com