transmission fluid FORD MUSTANG 1969 Volume One Chassis

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

07-04-25

C-6 Automatic Transmission

07-04-25

FRONT

PUMPSEAL-7A24&
DRIVEN

GEAR-7C011

FIG. 42—Front Pump Disassembled
STATOR SUPPORT-7A109

SELECTIVE THRUST

WASHER

7D014

GASKET

7A136
SEAL

RINGS

7D429

D 1619-B

2.
Remove the pressure plate and

the drive and driven clutch plates (Fig.

45).

3.
Install Tool T65L-77515-A (Fig.

46) on the reverse-high clutch drum.

Make sure that the legs clear the

snap ring enough to permit expanding

it enough for removing it. Remove the

snap rings and remove the tool.

4.
Remove the spring retainer and

the piston return springs.

5.
Apply air pressure to the piston

apply hole in the clutch hub (Fig. 47)

and remove the piston.

6. Remove the piston outer seal

from the piston and the inner seal

from the clutch drum (Fig. 45).

7.
Remove the front and rear bush-

ings from the clutch drum if they are

worn or damaged. To remove the

front bushing, use a cape chisel and

cut along the bushing seam until the

chisel breaks through the bushing

wall. Pry the loose ends of the bushing

up with an awl and remove the bush-

ing.

To remove the rear bushing, use the

tool shown in Fig. 48, and press the

bushing from the drum.

Assembly

1.
If the clutch drum bushings were

removed, position the drum in a press

and press new bushings into the drum

with the tools shown in Figs. 48 or 49.

2.
Dip the new seals in transmission

fluid and install one on the drum and

one on the piston.

3.
Install the piston in the clutch

drum.

4.
Position the piston return springs

in the piston sockets. Place the spring

retainer on the springs.
5.
Install Tool T65L-77515-A (Fig.

46) and compress the springs. Make

certain that the spring retainer is cen-

tered while compressing the springs.

Install the snap ring. Before releasing

the pressure on the tool, make certain

that the snap ring is positioned inside

of the four snap ring guides on the

spring retainer.

6. Clutch plate usage varies with

each model, refer to the Specifications

Section for the number of plates re-

quired. Dip the clutch plates in clean

transmission fluid. Install the clutch

plates alternately starting with a steel

drive plate (Fig. 45).

7.
After all clutch plates have been

installed, position the pressure plate in

the clutch drum. Install the pressure

plate snap ring.

8. With a feeler gauge, check the

clearance between the pressure plate

and snap ring (Fig. 50).

9. The pressure plate should be held

downward as the clearance is checked.

Refer to the Specification Section for

the proper clearance. If the clearance

is not within specifications, selective

thickness snap rings are available in

the following thicknesses: 0.065-0.069,

0.074-0.078, and 0.083-0.087 inch. In-

stall the correct size snap ring and re-

check the clearance.

FORWARD CLUTCH

Disassembly

1.
Remove the clutch pressure plate

retaining snap ring (Fig. 51).

2.
Remove the rear pressure plate,

the drive and driven plates and the

forward pressure plate from the clutch

hub (Fig. 52).
3.
Remove the snap ring (Fig. 53)

that secures the disc spring in the

clutch cylinder. Remove the disc

spring.

4.
Apply air pressure to the clutch

apply passage in the cylinder (Fig. 54)

to remove the piston.

5.
Remove the seal from the piston

and the seal from the clutch hub (Fig.

52).

Assembly

1.
Dip two new seals in transmis-

sion fluid. Install the smaller seal on

the clutch hub and the other seal on

the clutch piston.

2.
Install the clutch piston in the

cylinder.

3.
Make sure that the steel pressure

ring is in the groove on the piston.

Position the disc spring in the cylinder

with the dished face downward. Install

the spring as shown in Fig. 56. Secure

the disc with the retaining snap ring.

4.
Install the forward pressure plate

with the flat side up and the beveled

side downward. Install first a compos-

ition driven plate and a steel drive

plate (Fig. 52). Install the remaining

plates in this sequence. Refer to the

Specification Section for the number

of plates required. The last plate in-

stalled will be the rear pressure plate.

Install the snap ring and make certain

that it seats fully in the groove.

5.
With a feeler gauge, check the

clearance between the snap ring and

the pressure plate (Fig. 55). Down-

ward pressure on the plate should be

maintained when making this check.

Refer to the Specifications Section for

the proper clearance.procarmanuals.com

07-04-28

C-6 Automatic Transmission

07-04-28

SNAP RING

REMOVAL INSTALLATION

FIG. 48 — Replacing Reverse-High Clutch Rear Bushing
D2035-A

Press Ram

Tool-T69L-7D044-A

D2036-A

FIG. 49—Installing Reverse-High

Clutch Front Bushing

D1898-A

FIG. 50—Checking Reverse-High

Clutch Snap Ring Clearance

ONE-WAY CLUTCH

Disassembly

1.
Remove the snap ring and rear

bushing from the rear of the low-

reverse clutch hub (Fig. 59).

2.
Remove the springs and rollers

from the spring retainer and lift the

spring retainer from the hub.

3.
Remove the remaining bushing

and snap ring from the hub.
Assembly

1.
Install a snap ring in the forward

snap ring groove of the low-reverse

clutch hub.

2.
Place the low-reverse clutch hub

on the bench with the forward end

down (Fig. 60).

3.
Place the forward clutch bushing

against the snap ring with the flat side

up.
Install the one-way clutch spring

retainer on top of the bushing. Be sure

to install the retainer in the hub so

that the springs load the rollers in a

counterclockwise direction when look-

ing down at the unit (Fig. 60).

4.
Install a spring and roller into

each of the spring retainer compart-

ments by slightly compressing each

spring and positioning the roller be-

tween the spring and the spring retain-

er (Fig. 60).

5.
Install the rear bushing on top of

the retainer with the flat side down.

6. Install the remaining snap ring

at the rear of the low-reverse clutch

hub to secure the assembly.

SERVO

Disassembly

1.
Apply air pressure to the port in

the servo cover to remove the piston

and rod.

2.
Remove the seals from the pis-

ton.

On Lincoln Continental and Conti-

nental Mark III models, replace the

complete piston and rod assembly if

the piston or piston sealing lips are

unserviceable or damaged.

3.
Remove the seal from the cover.
D1899-A

FIG. 51—Removing Forward

Clutch Pressure Plate Snap Ring

Assembly

1.
Dip the new seals in transmission

fluid.

2.
Install new seals on the cover

and servo piston. Fig. 61 shows the

correct servo piston and cover for the

transmission.

3.
Dip the piston in transmission

fluid and install it in the cover.

LOW-REVERSE CLUTCH

PISTON

Disassembly

1.
Remove the inner and the outer

seal from the reverse clutch piston.

Assembly

1.
Dip the two new seals in clean

transmission fluid.

2.
Install the seals on the piston.

OUTPUT SHAFT

Disassembly

1.
Remove the governor attaching

bolts and remove the governor.

2.
Remove the snap ring that se-

cures the governor distributor on the

output shaft (Fig. 62) and slide it off

the front of the shaft.

3.
Remove the seal rings from the

distributor.

Assembly

1.
Carefully install new seal rings

on the distributor.

2.
Working from the front end of

the output shaft, slide the governorprocarmanuals.com

07-04-30
C-6 Automatic Transmission
07-04-30

6. Install the compressing tool

shown in Fig. 29 and compress the

springs just enough to install the low-

reverse clutch piston retainer snap

ring.

7.
Install the snap ring, then re-

move the compressing tool.

8. Place the transmission case on

the bench with the front end facing

downward.

9. Position the parking gear thrust

washer and the gear on the case (Fig.

33).
Do not restake the thrust washer.

10.
Position the oil distributor and

tubes in place on the rear of the case.

Install and torque the attaching bolts

to specification.

11.
Install the output shaft, and

governor as an assembly.

12.
Place a new gasket on the rear

of the transmission case. Position the

extension housing on the case and in-

stall the attaching bolts. Torque the

attaching bolts to specification.

13.
Place the case in the holding

fixture.

14.
Align the low-reverse clutch hub

and one-way clutch with the inner

race at the rear of the case. Rotate

the low-reverse clutch hub clockwise

while applying pressure to seat it on

the inner race.

15.
Install the low-reverse clutch

plates,
starting with a steel plate and

following with friction and steel plates

alternately. Retain them with vaseline.

Refer to the Specifications Section for

the number of plates required. If new

composition plates are being used,

soak them in clean transmission fluid

for fifteen minutes before installation.

Install the pressure plate and the snap

ring. Test the operation of the low-

reverse clutch by applying air pressure

at the clutch pressure apply hole in

the case.

16.
Install the reverse planet ring

gear thrust washer and the ring gear

and hub assembly. Insert the snap

ring in the groove in the output shaft.

17.
Assemble the front and rear

thrust washers onto the reverse planet

assembly; retain with vasoline. Insert

the assembly into the ring gear and

install the snap ring.

18.
Set the reverse-high clutch on

the bench, with the front end facing

down. Install the thrust washer on the

rear end of the reverse-high clutch as-

sembly. Retain the thrust washer with

vaseline and insert the splined end of

forward clutch into the open end of

the reverse-high clutch so that the

splines engage the direct clutch fric-

tion plates (Fig. 43).

19.
Install the thrust washer and re-

tain it with vaseline, on the front end
FORWARD

SNAP

RING

377300-S
SUN
GEAR

7A348

•
INPUT

SHELL

7D064

\
THRUST

WASHER

7D066

-IT

REAR

SNAP

RING

377300-S

I)
1634-A

57—Input Shell and Sun Gear Disassembled

of the forward planet ring gear and

hub.
Insert the ring gear into the for-

ward clutch.

20.
Install the thrust washer on the

front end of the forward planet assem-

bly. Retain the washer with vaseline

and insert the assembly into the ring

gear. Install the input shell and sun

gear assembly.

21.
Install the reverse-high clutch,

forward clutch, forward planet assem-

bly and drive input shell and sun gear

as an assembly into the transmission

case.

22.
Insert the intermediate band

into the case around the direct clutch
GEAR

SNAP RING

HUB AND FLANGE
D1906-A

FIG. 58—Output Shaft Hub and

Ring Gear

LOW-REVERSE

CLUTCH
DRUM-

7D390

SPRING

RETAINER-

7D191

BUSHING
-

7E194

SPRING
-
7D170

ROLLER-7190

D 1928-A

FIG. 59—One-Way Clutch Disassembled

cylinder.Install the struts and then

tighten the band adjusting screw suffi-

ciently to retain the band.

23.
Place a selective thickness bronze

thrust washer on the rear shoulder of

the stator support and retain it with

vaseline. If the end play was not

within specification when checked prior
to disassembly, replace the washer with

one of proper thickness. Refer to

Specifications Section for selective

thrust washer thicknesses. Lay a new

gasket on the rear mounting face of

the pump and position on the case

being careful not to damage the large

seal on the O.D. of the pump hous-procarmanuals.com