torque FORD MUSTANG 1969 Volume One Chassis

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

07-04-29
C-6 Automatic Transmission

07-04-29

FORWARD CLUTCH

CYLINDER-7D424
OUTER SEAL

7A548
DISC SPRING FORWARD PRESSURE INTERNAL SPLINE REAR PRESSURE

7B070

PLATE-7B066

PLATE-7B164 PLATE-7B066

INNER SEAL

377130894
PISTON

7A262 STEEL

RING

7D256
SNAP

RING

377127-S

FIG. 52—Forward Clutch Disassembled

DISC

SPRING
EXTERNAL SPLINE

PLATE-7B442

7oo/-

7000-DD
SELECTIVE

SNAP RING

377126-S

D 1635-A

FIG. 53—Removing or Installing Disc Spring

distributor into place on the shaft. In-

stall the snap ring to secure it. Make

sure that the snap ring is seated in the

groove.

3.
Position the governor on the dis-

tributor (Fig. 62) and secure them

with the attaching screws.

ASSEMBLY OF TRANSMISSION

1.
Place the transmission case in a

holding fixture.

2.
Position the low-reverse clutch

piston so that check ball is in the 6 o'

clock position (toward bottom of case)
and tap the piston into place in the

case with a clean rubber hammer.

3.
Hold the one-way clutch inner

race in position and install and torque

the attaching bolts to specification.

4.
Install a low-reverse clutch re-

turn spring in each pocket in the

clutch piston. Press the springs firmly

into the piston to prevent them from

falling out.

5.
Position the spring retainer over

the springs and position the retainer

snap ring in place on the one-way

clutch inner race.
D1632-A

D1901-A

FIG. 54—Removing Forward

Clutch Piston

CHECK BETWEEN SNAP RING

AND PRESSURE PLATE

1902-A

FIG. 55—Checking Forward

Clutch Clearance

PICK

SCREWDRIVER

D 1633-A

FIG. 56—Removing Sun Gear

Snap Ringprocarmanuals.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

07-04-31
C-6 Automatic Transmission

07-04-31

ing. Install six of the seven mounting

bolts and torque them to specifica-

tion.

24.
Adjust the intermediate band as

detailed in Section 2 and install the

input shaft with the long splined end

inserted into the forward clutch as-

sembly.

LOW-REVERSE

SPRING LOAD ON ROLLERS CLUTCH HUB

MUST BE IN A COUNTERCLOCKWISE

DIRECTION FOR INSTALLATION Q 192O A

FIG. 60—Installing One-Way

Clutch
25.
Install tool 4201-C at the sev-

enth pump mounting bolt (Fig. 24)

and check the transmission end play.

Remove the tool.

26.
Install the control valve in the

case,
making sure that the levers en-

gage the valves properly. Install the
primary throttle valve, rod, and the

vacuum diaphragm in the case.

27.
Install a new pan gasket and

the pan.

28.
Install the converter assembly.

29.
Install the transmission in the

vehicle.

PISTON

AND ROD
PISTON

COVER

Models

PGA-A3,

J3,
Z, AA

PGB-AD,
AE, Jl

PGB-F2/G2, H2

PGB-AF1,
AG, AH
Piston

Assembly

C6AP-7D021-C

C6AP-7D021-D
Cover

C6AP-7D027-A

C6AP-7D027-D
Diameter - Inches

A

2.075

2.342

2.477
' B

2.980

3.025

NONE
c

2.971

3.016

3.492
D

2.066

2.333

2.468

Models

PGC-B,
Cl
Piston and

Rod Assembly
Cover
Diameter
—
Inches

A

2.183
B

2.739
C

2.705
D

2.220

D 2037-B

FIG.
61
— Intermediate Servo Cover and Piston Dimensions

OUTPUT

SHAFT
GOVERNOR

D
1623
-A

FIG. 62—Output Shaft Disassembledprocarmanuals.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