Transcript
MANUAL
CAR-TRUCK FORD DIVISION
FORD MOTOR COMPANY
Copyright © 2010, Forel Publishing Company, LLC, Woodbridge, Virginia All Rights Reserved. No part of this book may be used or reproduced in any manner whatsoever without written permission of Forel Publishing Company, LLC. For information write to Forel Publishing Company, LLC, 3999 Peregrine Ridge Ct., Woodbridge, VA 22192
1955 Fordomatic Shop Manual EAN: 978-1-60371-005-3 ISBN: 1-60371-005-1 Forel Publishing Company, LLC 3999 Peregrine Ridge Ct. Woodbridge, VA 22192 Email address:
[email protected] Website: http://www.ForelPublishing.com
This publication contains material that is reproduced and distributed under a license from Ford Motor Company. No further reproduction or distribution of the Ford Motor Company material is allowed without the express written permission of Ford Motor Company.
Note from the Editor This product was created from the original Ford Motor Company’s publication. Every effort has been made to use the original scanned images, however, due to the condition of the material; some pages have been modified to remove imperfections.
Disclaimer Although every effort was made to ensure the accuracy of this book, no representations or warranties of any kind are made concerning the accuracy, completeness or suitability of the information, either expressed or implied. As a result, the information contained within this book should be used as general information only. The author and Forel Publishing Company, LLC shall have neither liability nor responsibility to any person or entity with respect to any loss or damage caused, or alleged to be caused, directly or indirectly by the information contained in this book. Further, the publisher and author are not engaged in rendering legal or other professional services. If legal, mechanical, electrical, or other expert assistance is required, the services of a competent professional should be sought.
FOREWORD
Complete this
units of
The
All the
procedures needed
the transmission
manual
The
next page.
in the
information for the 1955 Fordomatic transmission is
service
manual.
is
arranged
section
torque
and
in
seven
headings
to check, adjust, replace,
converter are
chapters as
under each
the
in
various
included.
listed in the Table
chapter
Contents
of
title indicate the
on
the
subjects covered
chapter.
Chapter ONE describes the mission and and servos
torque
in the
Chapter TWO Service closely
converter.
covers
specifications adhered
construction and operation of
Diagrams showing the positions given in this chapter.
the
operations
required
for
necessary to
each
bands,
are
presented
the transmission.
here
and
should
be
to.
Chapter FOUR and
all
contains
to
replace
are removal and
Chapter FIVE gives the torque
the gears, clutches,
of
maintain and adjust
operation
the
steps
that should be followed in
troubles. The procedures for correcting the troubles
transmission,
the 1955 Fordomatic trans
various ranges are
Chapter THREE gives
These
presented
or repair
converter.
the
procedures needed
the transmission
installation
are
to
also
diagnosing Fordomatic
included in this the
replace
either with or without
chapter.
subassemblies
the torque
in the
converter.
procedures only.
complete overhaul procedures
It is important that
all
for
operations
all
be
transmission performed
parts
except
correctly
and
completely.
Chapter SIX
covers
the
overhaul procedures
for the torque
converter.
Chapter SEVEN contains diagrams showing the fluid flow through the hydraulic in the Fordomatic transmission. The torque specifications and the special tools to
service
the 1955 Fordomatic transmission
are
system
needed
given here.
SERVICE
DEPARTMENT
FORD DIVISION FORD MOTOR COMPANY
Chapter ONE
Construction
Operation
and
Pa*e
Section
1
Torque Converter
3
2
Planetary Gear Train Clutches, Bands, and Servos
5
3 4
Control System
9
A
7
Fordomatic transmission is available, as op 1955 Ford cars, including the
new
tional equipment, for all
Police Interceptor
torque
2),
converter with a
and
The
Unit, Station Wagons, Courier, and Thunderbird, and F-100, F-250, F-350, and P-350 trucks. The unit is basically the same as previous transmission
described in this
models, but has certain improvements.
operational
The Fordomatic transmission
combines
1. The hydraulic
torque converters
used
hydraulic
a
Fordomatic on
Police
car,
Interceptor,
transmissions.
the 6-cylinder
with
and
1955
all
of
the
on
the
Thunderbird
An 11% -inch impeller is
car and all
construction
of
car and
used
Fordomatic-equipped trucks.
impeller
(pump),
the
is driven
impeller
spring-steel
drive
turbine,
by
the
is
which
the impeller.
The
stator
parts
are
these
of
is
which
part of
mounted around
driven
by
fluid is
the
the engine
flywheel.
in
is driven
shaft,
mounted on a
driving
or
blades
and
through
mounted on a
is
(fig. 1 ). The
stator
crankshaft
engine
enclosed
the
parts:
one-way
fluid-filled
a
by
clutch.
housing
the impeller.
The impeller,
place
the
plates mounted on
The turbine, All
and
engine.
forms
consists of curved
of a
housing
which
is
An inner ring locks the blades in
fluid
a
the inside
As the impeller
passage.
fluid
thrown through the curved
truck
models are also
passage
converter
through the
peller
increase
torque
exist
fully
among the
explained
is designed
When
stator.
of
This flow
slightly
over
2
:
so
opera are
or
various
here.
that the fluid flows
and
back to the im
produces a maximum
1
the turbine is
when
torque is developed
enough
by
converter, the turbine begins to rotate,
The
1:1
comes
the
engine
turning
the
shaft.
converter
turbine
off as
torque
multiplication
speed approaches
when
peller speed.
the turbine is
This is known
as
gradually tapers
impelled
speed
driven
being "coupling
at
and
be
%0
im~
point."
the
While the turbine is operating at less than %0 impeller speed and the converter is multiplying torque, the fluid
leaving stator
member,
differences that may
of
transmission
Fordomatic design
Any
chapter.
principles
in the
from the impeller to the turbine
turbine three main
converter consists of
the
and
assemblies
major
The torque
and
Construction. The torque
the
details
Operation.
b.
stalled.
a.
(fig.
gear system
TORQUE CONVERTER
Fordomatic models differ only in the diameter impellers (pumps). A 12-inch impeller is used 8-cylinder
tion
fully-automatic
provides a wide range of transmission ratios.
the turbine blades strikes the front face of the
blades. These blades
action of
against
the one-way
the front face
When the turbine
of
held stationary by the long as the fluid is directed
are
clutch as
the blades.
rotates
faster than
%0
impeller
rotates, HOUSING
into the
turbine.
The turbine, the impeller site
peller
similar
that it has blades
curved
except
strikes
turbine
The fluid a
third
attached
by
driven member, is
in design to in the
oppo
FLUID
direction to the impeller blades. Fluid from the im
and
by
or
a
the turbine blades
shaft
leaving
set of
to the
one-way
only in the
to
stator support
direction
to the
locks the
stator
rotation.
power
CLUTCH
the turbine returns to the impeller
the
as
on
as
stator.
The
stator
the transmission
clutch which permits
same
the turbine
rotate.
blades known
backward
The
and causes
ONE-WAY
the
stator
to
the impeller. The
support
on
the
case
to
is
case
TURBINE SHAFT
rotate clutch
ENGINE CRANKSHAFT
prevent
from the turbine is transmitted to the
transmission through the turbine
shaft.
5565
Fig. I
Torque Converter Paris
Chapter
I Construction
and
Operation
3 E a />
o
E o
CI
OuJU
Section
the converter
speed and
fluid is directed
against
As the one-way in the direction turn
multiplies
the
clutch permits
to rotate only
begins to
converter now
fluid coupling as long as the than %0 impeller speed.
acts as an efficient
the
torque,
stator
The
turbine.
and
Converter
the stator blades.
of
stator
impeller rotation, the
of
impeller
the
with
longer
no
the back face
1 Torque
turbine
speed remains greater
The torque enters the on
the left
side of
inlet duct is filters
out
cleaning
Fins
air
housing housing (fig.
of
4). A
dirt,
a removable
3). On trucks, the
the converter
housing (fig.
On cars, the air duct
cooled.
through
the
top
is
gravel and road
and
on
into the
on
the
as part of
converter
converter
housing
screen
and
is
air
cast
in the inlet duct removed
for
housing draw
air
and can
be
inspection.
the
outside of
converter
the impeller
housing. A baffle directs the
air over
Converter
Fig. 4
the
Cooling
entire converted surface.
the
an outlet on
side of
The
air
is
by
provided
cooler
Inlet
the converter housing.
is
mounted
hoses
and
mission,
cooling
on
tubes
additional
cooling
cooler
(fig. 5). The
the outside of the
transmission.
an oil-to-water-type
and outlet
through
exhausted
On truck Fordomatic transmissions, is
Truck
Diagram
connect
the
the
connect
cooler with
cooler
with
the trans
the
engine
system.
COOLANT SUPPLY HOSE
OIL OUTLET
OIL COOLER
5344
5564
Fig. 3
Converter
Cooling
Diagram
2. The
compound
planetary
Fordomatic transmission
high, low,
gear
provides
Car
Fig. 5
are
system
neutral,
used
in the
intermediate,
driven.
held
or
gear
train
Construction.
a.
The ondary
gear sun
common
train consists
gear, primary
carrier,
and an
mission output shaft
The planetary reverse
drive
ratios needed
efficient operation of
provides
for
the
forward
and
smooth performance and
the car or truck.
Truck
PLANETARY GEAR TRAIN
and reverse gear ranges when certain combina
tions of gears
Oi7-To-Wafer-Type Cooler
is
The 1955 planetary
of
and
a
primary
secondary
internal
because
of
gear,
pinions
sec
held in
gear to which the
a
trans
attached. gear
train parts cannot be inter
changed with similar parts on previous els
sun
differences in design.
Fordomatic
mod
I Construction
Chapter
FRONT CLUTCH
LUBRICATION
REAR CLUTCH
Operation
and
yf/M/A "
"
"
"
REAR CLUTCH
LUBRICATION
LUBRICATION
^^n^atsQ
"
FRONT CLUTCH
LUBRICATION
Fig. 6
5537
Primary
Sun Gear
Assembly
assembly to front band.
contact
provide
for
surface
(3) INTERNAL GEAR. The increase in of an
teeth
on
the primary
increase in the
and
secondary teeth
number of
the
the
wide
number
sun gears required
on
the internal
gear
from 66 to 72 teeth.
CARRIER AND PLANETARY PIN
(4) PINION IONS. Pinion
carrier
tained primary
pinions with
ions
17 teeth.
with
pinions each on
the the
of
assemblies
The
and
primary
have 18 teeth. A bronze
pinion carrier pilot
selective
carrier and
16 teeth
new
increased to fit
around
pin
secondary and
secondary
bushing is
pressed
(fig. 7). The inside diameter
thrust washer, located between the
the forward
con
used
previously
end of
pinion
the output shaft, has been
the bronze
bushing
on
the new
pinion carrier pilot.
PRIMARY PINION
SECONDARY PINION
(5
) OUTPUT SHAFT.
the forward 5582
Fig. 7
Pinion Carrier
Assembly
primary on
previous
has 30 teeth instead
primary
installed in the forward for improved front
(2)
end of
clutch
the
27
check
the primary
teeth
assemblies.
and
new
valve
is
sun gear shaft
lubrication (fig. 6).
secondary
instead
The
of
wide
the
sun
gear
33 teeth
drum
the output
b.
has been
shaft
the
carrier
shaft
pilot
used
in
eliminated.
bore
supports
(fig. 8).
Operation.
provided
DRUM AND SECONDARY SUN GEAR. The
1955 drum gear
A ball
gears.
sun
of
end of
bushing formerly
mashine-finished surface of
the bronze-bushed pinion
(1) PRIMARY SUN GEAR ASSEMBLY. The sun gear
The
The
The
operation
driven to
provide
following
page.
FRONT CLUTCH
of
the
the
gear
various
FRONT BAND
train
members,
ranges, is
REAR BAND
X
held
described
INTERNAL
on
or
the
OUTPUT SHAFT
assembly has 36
used on earlier model
surface
is
used
on
the
new
[%2i3*4
PRIMARY SUN GEAR SHAFT 'FINISHED BORE
Fjg. 8
Output Shaft
and
Pinion Carrier
5583
Fig. 9
PRIMARY
SECONDARY SUN GEAR SHAFT
Planetary
SECONDARY PINIONS 13)
Gear Train
PIN'ONS (3)
PRIMARY SUN GEAR
Neutral Position
5301
2
Section
FRONT BAND APPLIED ,HOLD'NG SECONDARY SUN GEAR)
FRONT CLUTCH APPLIED (DRIVTNG: PR.MARY SUN GEAR)
REAR
CLUTCH RELEASED
Fig. 10
driven.
Therefore,
train
gear
no power
is transmitted to the
by driving
the secondary sun
the secondary
pinions
(3) HIGH RANGE. secondary
sun
"walk"
gear
them.
rotate
at
driven
the
direction
unit,
which causes
same speed as
the tur
turns free in the
gear
the gear train.
effect on
LOW RANGE. In low range, the primary sun gear is driven and the pinion carrier is held (fig. 12). Power is
tow Range
the internal sun gear.
reverse
The
in the
gear
The secondary
direction
pinion carrier
and
is held
has
no
against
rotation.
(5) REVERSE RANGE. Reverse range is accom by driving the secondary sun gear and holding the
plished
(fig. 13). The secondary pinions drive the reverse direction. The primary sun
pinion carrier gear
in the
the primary pinions
(6)
tion, the parking internal
gear
rotate
freely
and
have
no
train.
PARK. When the
selector
pawl engages
is in the P
the
external
to lock the internal gear
This locks the
shaft.
driving
the primary
as
effect on the gear
pinions cannot rotate and
revolves as a
Power Flow
the internal gear,
same
gear and
as a
and
(SECONDARY
transmitted to the primary pinions, the secondary pinions, and
internal
locked together
(fig. 11). Therefore, the to
to
pinions
and
gears are
output shaft
them
causing
is
hold
In high range, the primary
the entire planetary train the
range
carrying the internal
sun gear
and output shaft around with
bine
or
output
sun gear and
(fig. 10). The primary
gear
drive the secondary around
unit
neu
sun
the primary
CARRIER)
5308
Fig. 72
held
members are
INTERMEDIATE RANGE. Intermediate
(2 )
accomplished
ing
the
PINION
5309
When the transmission is in the
none of
APPLIED
BAND
FRONT BAND RELEASED SUN GEAR FREE)
REAR CLUTCH RELEASED
(fig. 9).
shaft
REAR
(HOLDING
FRQNT Q]JKH AppuED
Power Flow Intermediate Range
( 1 ) NEUTRAL. tral position,
REAR BAND RELEASED (PINION CAGE FREE)
Gear Train
Planetary
rear wheels
to
(park) teeth
posi
on
the
and output shaft.
prevent movement of
the
vehicle.
(4)
FRONT CLUTCH APPLIED
'PLANETARY TRAIN LOCKED (TURN AS A UNIT)
REAR CLUTCH APPLIED
Fig. 1 1
means
of
the planetary power
from
and
train
FRONT CLUTCH RELEASED (PRIMARY SUN GEAR FREE)
REAR CLUTCH APPLIED
(DRIVING SECONDARY SUN GEAR)
holding
Fig. 73
Power Flow
Reverse Range
CLUTCHES, BANDS, AND SERVOS the
is required, in
the turbine and to
5311
High Range
Power Flow
driving
gear
REAR BAND APPLIED (HOLDING PINION CAGE)
5310
3. A
FRONT BAND RELEASED
FRONT AND REAR BANDS RELEASED
obtain
proper
order
the
parts
of
to transmit
various com
binations plished
required
by
the
single wrapped
two
for the
gear
multiple
bands
shown
ratios.
disc
This is
clutches
in fig. 1.
and
accom
the two
8
I Construction
Chapter
Operation
and
FRONT CLUTCH PISTON
ACCUMULATOR
\
FRONT CLUTCH PISTON
D
TURBINE
SHAFT
SPRING
5591
Disassembled Rear Servo
Fig. 16 four driven A
gear.
plates
heavy
to the secondary
connected
are
release
spring is
in the
used
rear
sun
clutch
assembly.
(3) BANDS. The front steel and
5589
FLUID PRESSURE
Fig. 14
Fronf Clutch
Construction
of
clutches,
is
servos
spring, three steel
release
driven
plates with
and
The drive driven
plates
drum,
clutch
are connected
plates
clutch
in
all models.
to the turbine shaft.
rear
chored
in the transmission
four
The
of
consists
release
spring, four
drive
clutch
a
rear clutch
to the front clutch drum
plates
drive
and
the
FRONT
end of
case
an
end
other
is
servo.
the planetary gear assembly
around
the band
screw and
the
and
sec
the band is
of
end
the
of
the
contacts
is
the opposite end
end of
the band
connected
to the
rear servo.
(4) FRONT SERVO. The front servo assembly con sists of an aluminum servo body, front servo piston, piston
inner
(5
release
guide,
spring, and
the lever
end of
the
and
outer end
lator
the front band strut.
contacts
REAR SERVO. The
)
piston
spring, an
and
spring,
actuating lever
body,
the
rear servo
accumu
piston,
rear servo release
piston,
end
accumulator piston
the
rear
consists
assembly
lever. The inner
actuating
outer end engages one end of
PISTON
rear servo
accumulator
contacts
actuating lever. The
an
the front servo piston stem
contacts
of a cast aluminum servo
band
strut
of
and
the the
(fig. 16).
Operation.
h.
CLUTCH
band fits
rear
drum. One
sun gear shaft.
clutch
facings (fig. 15). The
connected
piston,
four
facings (fig. 14). Three
piston,
and
assembly
clutch
and
to the primary
rear clutch
driven plates,
with composition are
clutch
clutch plates are used
REAR CLUTCH. The
rear clutch
plates
drive
composition
four driven
plates are connected
(2)
front
the front clutch cylinder, front
One
assembly.
to the front
are made of
the drum
encircles
sun
adjusting
(1) FRONT CLUTCH. The consists of
steel
and
below.
given
drive
bands,
gear
bands
rear
linings bonded to the inside
ondary
The
the
and
composition
The front band
surfaces.
connected
Construction.
a.
have
Operation
of
the clutches,
bands,
and servos
is
covered
below.
(
1
) FRONT CLUTCH. The front
by fluid ton
is
moved against a
"apply"
disc
SECONDARY SUN GEAR
-
Fig. 75
Rear Clutch
action
is
clutch
to lock the
applied
shaft
the fluid
when
The
pis
increases the multiple
the primary
sun
to drive the primary
The primary sun gear is driven in The piston is returned to the released washer
operated
all
position
is
pressure
forward
by
removed
(fig. 14).
fluid 5590
PRESSURE
washer which
(2) REAR CLUTCH. The
FLUID
PRESSURE FLUID
When the
is
clutch
clutch piston.
gear.
speeds.
FRONT
spring
is locked to the turbine
the spring
CLUTCH
the front
force through lever
clutch.
gear sun
pressure against
of
pressure against
the
the
piston compresses
multiple
disc
clutch.
rear clutch
the
The
rear clutch
release
rear
is
operated
piston.
spring
clutch
and
drive
by
Movement locks the
plates
are
3
Section
to the front
splined
drum
clutch
and
Clutches, Bands,
the driven
plates
connected to the
Servos
and
by
fluid
of
the front
pressure which exerts
secondary sun gear. When the rear is applied, the secondary sun gear is driven in reverse and in the drive range high ratio. The piston is
through
returned to
drum. Under
are
clutch
the released
by
position
the
rear clutch re
lease spring (fig. 15).
sun
anchored opposite
band
against end
assembly.
the drum
encircles
One
the
the band is
end of
boss in the transmission
a
of
front
forced inward
front band
case.
The
tightly
servo
sun
secondary
in the inter
applied
the
end of
rear
drum
band
attached
the inner end of the rear band adjusting
on
the band
other end of
the
and
to the
drum rear
piston
servo
and prevents
band is
the
strut
pressure
tightens the band
the pinion carrier
applied
in the low
screw.
the
rear servo
return
spring
(4) FRONT SERVO. The
The
from
rotating.
and reverse ratios.
the
The
When
released
pressure.
front
the
band. Fluid
rear
spring is
in the
is
is
servo
the
released
by
the piston, conditions,
pressure
spring
and
around
some
rear servo
spring to
only
the
provided as
As the
piston
contacts
bore,
the
accumulator piston
rear
band is
bottoms
fully
ap
(fig. 18).
The
clutches and
tions to
bands
obtain
by pressure from following combina
are applied
control system
in the
the desired gear
ranges:
Ratio
Apply
Neutral
No Clutches
Intermediate
Low
rear servo
accumulator piston
the
uses an
application of
is directed to the
pressure
compressed.
the hydraulic
High
assembly
cushion
force it inward. When the band
rear servo
( 1.467 : 1 )
or
Bands
Front Clutch
Front Band
(1:1)
Front Clutch
Rear Clutch
(2.40:1)
Front Clutch
Rear Band
Reverse
servo piston
by
directed
around
the fluid pressure is removed, the rear band is
by
(5) REAR SERVO. The
between the band
actuating lever. Fluid
rear servo
rear
engages
the lever
of
opposite side of
released
accumulator piston and
to the
contacts a strut
to the
spring force. Under
is
to
?s placed around a
One
servo
end
(fig.17).
plied
band
rear
release
cushioning is
prevents the
conditions, the
pressure
drum,
mediate ratio.
The
certain
piston
release
from turning. The front band is
pinion carrier.
front
the
outer end
band to tighten the front band
spring to tighten the
the
drum, it
the
around
the
the inner
against
transmitted actuating lever. Force is
between the
the drum. When the band is held
against
around
of
directing assisted by
the band engages a strut between the
of
actuating lever. When fluid pres is introduced into the front servo, the piston is and
sure
gear
gear
the end
fluid
(3 ) BANDS. The front band secondary
servo
a strut
force
Rear Clutch
(2:1)
Rear Band
moved
REAR BAND
FRONT BAND
FRONT SERVO APPLY
APPLY-
5580
Fig. 17
Fronf Servo Operation
Fig. 78
4. A
control system
mission respond
road and
tion
of
is
speed conditions.
this
system
is
CONTROL SYSTEM
provided which makes
to the desires
fully
of
The
the driver
the trans
as well as to
construction
described in this
Rear Servo Operation
a.
Construction. The
control system consists of a manual selector
and opera
for the driver,
section.
sensitive to
and
throttle
a
hydraulic
position
lever
control system which
and
road speed.
is
10
Chapter
I Construction
Operation
and
CONVERTER PRESSURE VALVE
1 I If J IB M|W|
Wg_\
IBS
REGULATOR
U
CONVERTER PRESSURE VALVE SPRING SPACER
\
\
SLEEVE AND RETAINER
CONTROL PRESSURE VALVE
FRONT PUMP CHECK VALVE SPRING
SEPARATOR
CONTROL PRESSURE VALVE SPRING
RETAINER
PLATE
FRONT PUMP CHECK VALVE
1 1 I 1
5542
Fig. 19
The the
Five
range
range positions
verse), N
connected
The
valves
pressure
are
mounted
body,
regulator
pumps are
by
link
a
valves.
in the and
operating, case
fluid in
valve
governor a
at
sump
body,
lator
(
)
FRONT OIL PUMP. The front
the transmission
intake
bosses engine oil
case.
body. When the bottom
pump is
mounted on
A tube
the front pump drive
regulator
connects
the
front face
the sump to the
lugs
contact
drive the pump
to
gear
a cres
at
valve
assembly.
oil pressure regulator valve
sists of a cast aluminum
spring,
at
stamped-steel
the
steel
end of
sleeve
verter
the
is
pressure
body,
control
converter pressure
spring, and a spring
A
spring is
retainer
spring
used
spring.
for
the
all models except
control pressure
blue. The
painted
converter
green on all
models.
the
selector
manual
arm
lever
to manually
on
the
at
move
the valve to the
positioned against
the
springs.
end of
shift
the
valve
the
is
shift
valve
blocks the fluid
rear
moved
open
this
is
posi
plug is
automatic
shifts
control valve
the valve in the bore.
from the and
The
manual valve
high ratios,
in the low
passage
the
ratio.
bore in the
a
passage
ratios with control pressure
governor
shift valve opposite
in the intermediate
servo
to
fits in
positions
A
range.
located in
shift valve
provides
from the intermediate to the high
A spring
driving
shift valves are
and
from the downshift
(5) GOVERNOR VALVE. assembly is
regulator
A
The 2-3
desired
The 2-3
tioned in the bore with two
The 2-1
outer
the transmission. This permits the driver
the control valve assembly.
springs.
to the
column
steering
connects
to
and
reverse
valve.
regulator valve and
(fig. 19).
as a guide and
regulator
con
assembly
pressure regulator
seat and stem
control pressure
re
control pressure regu
On the 6-cylinder car, the
car.
valve
assembly.
(2) OIL PRESSURE REGULATOR VALVE AS
valve and
The
same
in the
slot
(3) MANUAL CONTROL VALVE. Linkage
valve
SEMBLY. The
the
valve springs are
and a
to lock the spring
regulator valve springs are painted
Fluid from the pump is directed to the
speeds.
pressure
oil
the pump. Impeller hub drive
side of on
used
the body.
position on
body,
valve
casting are
(4) SHIFT VALVES. Two
cent-type, high-volume pump of
regulator
body
the
6-cylinder
control system.
1
of
tainer in
the
pressure, to the
under
passes,
the pressure
base
the connecting lines.
control
the
of
Assembly
regulator
control system consists of hydraulically-
the transmission
of
Lo (low). The
valve system
the
of
R (re
(parking),
and
valves, two pumps, and
operated
the
to the
select
desired.
operation
P
are provided:
permits remote control
The hydraulic
the driver to
permits
transmission
of
(neutral), Dr. (drive),
lever,
selector
age,
lever
manual selector
particular
O// Pressure Regulator
valve,
stop inside
boss,
used
and a
the
cast on
the
con
top
attached sure.
to the
Control
output
pressure
is directed through the
case
and
a
shaft
A
from the case
distributor
governor
assembly is
to produce governor pres control
passage
sleeve
and
valve a
assembly
tube between
to the governor valve.
4 Control
Section The
ing
is
governor valve
operated
by
is
ernor pressure
in direct
by
provided
the
of
work
until
Gov
valve.
control pressure
regulating
is
sion case
to direct
used
front
its spring and fluid.
by
to the
governor pressure
is
a part of
(6)
tioned in
Control valve
a
bore in the
pressure
is
actuated
downshift As the
is directed to
by
valve
Throttle
is
valve
is
mediate
^hift
with
is
application
in
a
a
provides an unrestricted exhaust
for the
the control
open
tioned
by
throttle pressure, permits
throttle,
the
servo release
control an
servo
unrestricted
pressure, providing
ex
a rapid
from intermediate to low
control
the fluid flow applying the
This
servo.
action
valve
momentarily
at closed
rear servo and
provides
a
restricts
releasing the
smooth
rear
band
engagement.
force,
to the large to
rected
lator
(8) DOWNSHIFT VALVE. The downshift valve is in the control valve body bore with the
tion
of
The inner throttle lever
to the
the
(12)
A
one of
the
valve and
is directed to
valve, produces pressure which
valve.
to
back face the
when
open a passage
the 2-3
of
connected
and
in
a
The function front
servo
bore in the
of
in
this
valve
relation
to the
the 2-1 shift
valve
completely.
transition
control valve
body by
is to time the
to the
valve
pressure
is depressed
(9) TRANSITION VALVE. The positioned
a
between the
The downshift
to direct fluid
shift valve
accelerator pedal
is directed to
pressure
throttle lever.
accelerator pedal and
moved
Control
Linkage is
is
operation of
the
Fluid flow to apply the rear band is blocked by the until the flow to release the front band
transition valve
has built up against
its
When the slowly
by
enough pressure
to open the transition
valve
rear
the
band is released, the fluid is
action of
the rear
exhausted
servo check valve orifice
posi
compensator
used
the
on
valve
between
Control
valve and governor
ends
of
the
compensator
regulated
by
the
compensator
called
compensator
a reduced
VALVE. The
pressure
control pressure regula
lator tor
converter pressure
bore in the
pressure regulator
from the
a
of
valley
body.
control pressure regu
the converter
regula
to the converter. Fluid returned from the
is directed to
in the
that used
a
is directed to
valve
valve and
REGULATOR
spring-loaded converter pressure regulator
a
land
the
of
valve
converter regulated
provided
from
to provide fluid
to a pressure below
in the transmission hydraulic
lubrication is
system.
another
land
Trans of
the
converter pressure regulator valve.
( 14)
REAR OIL PUMP. The
rear oil
pump is
a cres
cent-type pump driven by the transmission output shaft. An intake tube is connected between the sump and the
intake of
the
side of rear
the pump. A tube
pump is
pressure regulator
A lubrication tube,
spring.
throttle
the
compensator sleeve.
(13) CONVERTER PRESSURE
a spring.
rear servo.
on
modu
valve.
mission
valve
is di
pressure
from the
spring is
is directed to the
pressure exhausted
valve spring.
is
pressure
the bores of the control
is directed to both
Fluid
the
modulator valve
The
VALVE.
land
the downshift valve and the inner end contacts the
of
the spring
control valve assem
depending
valve,
the
a
is located in
land
moved
increases to
overcome
passages
compensator valve
valve
downshift
is
pressure or modulated
compensator
Control pressure,
valve.
manual
manual valve.
one end of
pressure
valve
valve
throttle
valve and
COMPENSATOR
assembly.
valve.
the
to direct fluid
provided
the lands. Two
is located in
valve
the
bore in the
a
contacts one end
valve.
to
closed
from low to intermediate.
shift
direct throttle
valve
pressure
end of
one of
valve
m.p.h.
the
from the
the vehicle speed
when
spring loaded and fits in bly. Fluid passages are
of
end
the lands. The
one of
the
and causes
ends of
pressure
(11) MODULATOR VALVE. The
tor
positioned
fluid
and
produce enough governor pressure
pressure
throttle, the orifice
throttle
the spring
against
both
at
is directed to the
pressure
is directed to
valve
same shift
valve, posi
approximately 25 the valve holds it in a
into low
the spring,
opposite
application.
a manual shift
front
When the
orifice
valve
front band
smooth
exhausting the front
by
a small orifice.
con
orifice
control
Governor
This
valve assembly.
above
A spring at one end of position. Passages are provided
pres
orifice
high to inter
normal
at
On
shift valve
The
bore in the
throttle,
closed
provided
front
to
regulated
is directed to
directed to the
occurs
of
The
valve.
the
end of
fluid through
front band
is
pressure
release
haust
a spring.
to oppose governor
also
During
spring.
a
posi
the modulator valve.
positioned
by
assembly
the
of
(7) ORIFICE CONTROL VALVE. trol
by
is
the throttle lever and
Throttle
valve springs
pressure
control valve and
assembly
control pressure
the spring
at
plug
valve
the accelerator pedal is depressed.
is moved,
to assist the shift
throttle
land
a
movement of
throttle pressure.
the shift
sure.
control valve
valve when
valve
provide
is
moved
valve assembly. prevents a shift
of
is
valve
LOW INHIBITOR VALVE. The low inhibitor
(10)
con
valve
THROTTLE VALVE. The
With front
exhausted.
rear servo
the transmis
sleeve and
is
servo release pressure
servo release pressure gone, the transition
proportion to governor rotation or vehicle speed.
A tube between the distributor
trol
force
centrifugal
face
against control pressure on a
11
System
lator
body
and
used
assembly
side
pressure to the
and control valve assembly.
connected
between the
the rear pump,
the transmission.
from the discharge
to direct fluid
provides
pressure regu
lubrication for
12
I Construction
Chapter
Operation
and
Therefore,
servos.
or
clutches
the output shaft,
is delivered to
power
no
the transmission is in the
and
neutral
ratio.
Variations in pump to
regulator
to
sures
throttle would
open
wide
transmission
from
speed
operating
(fig.
valve
20)
The
for
pressure
the valve
force FROM PUMP
Fig. 20
5623
Control Pressure Regulator Valve Operation
pressure
the spring, the
of
the
opens
"D",
port at
at
pres
pump
the
of
is directed to
"E". When the pump builds
and
"C"
hydraulic
enough
up
"C", "D",
at
of
pressure
operation "A"
transmission. Fluid from the pump
speed
range
wide
control
variable
regulates
constant
provide
a
provide
pressures.
idle
engine
an
to
at
to the
valve moves
the
overcome position
shown,
the pump
and exhausts a portion of
As the pump volume varies, the valve auto matically positions itself so that enough fluid exhauses at port to maintain constant pressure at "B". pressure.
"D"
b.
Operation. The
vided
automatic
by
ponents. and
trol
operation
controlling the flow
Fluid flow
needed
of of
to
the transmission is
fluid
pressure
operate
the
all
ratios are given
( 1 ) NEUTRAL RANGE. The front when
N -is
the
to the
pro com
components
to provide the different ratios is explained here. Con
diagrams for
the engine
(neutral)
shift
Fluid
pressure
oil
pump
is
driven
lever in the
from the front pump Regu
control pressure regulator valve.
(control pressure) is directed from regulator valve to the manual valve. In the
position,
control pressure
is directed to
valve, throttle valve, converter, and
sure regulator valve.
No fluid
pressure
When the position
(drive),
from the
passages
the down
converter
lever is
selector
to Dr
governor, the apply
2-3
and
side of
pressure
to the turbine
and
to the 2-1
and
to the front
pressure
shaft.
clutch
Control
the front servo applies the
side of
shift valve
springs, and
shift valve
lands. With the primary
the secondary
sun
is blocked
control pressure
held,
gear
in the intermediate (3
is directed to the
the
at
driven
sun gear
the transmission
and
operates
1.467 to 1.
ratio of
) DRIVE RANGE
the
intermediate
the
front
is
servo
uncovered
the
of
GOVERNOR PRESSURE
high
shift
servo
the
of
end
is
applied.
rear
shift
passages
to the
release
clutch.
and
2-3
the
inward,
pressure
shaft
from
accomplished when
rear clutch
the
primary
shift
regulated control pres
moves
to the
and
locked to the turbine
are side
When both
secondary
sun gears
to provide the high
ratio
1 to 1.
A
centrifugally-operated
automatic shifts
directed
against
ernor valve
output shaft and
is
When
a
pressure
face
is forced
enough
of
rotate.
in direct
inward to
front
to
overcome
uncover
servo and
valve.
centrifugal
Control
provide
proportion
is
to the
ratio
valve
The
force
pressure
is
is
gov
as
the
reduced
vehicle speed.
provided against the
the springs, the
the passages to the
shift valve moves release side of
the
to the rear clutch.
(4) DRIVE RANGE shifts
manual
governor
by
governor pressure
OUTPUT SHAFT shift valve
to
used
from the
the
outward
begins to
regulated
is
governor
from the intermediate to the high
(fig. 21). Control
5573
to
valve
to direct control
front
is
ratio
by directing
clutches are applied, the are
HIGH RATIO. The
released and
accomplished
As the
valve.
of
to the
(governor pressure)
sure
Assembly
the front servo,
pres
CONTROL PRESSURE
Governor
open
front band to hold the secondary sun gear. The 2-1 and 2-3 shift valves are held in the closed position by the
This is
Fig. 21
to
to the front clutch
valve
sun gear
to the apply
(neutral)
manual valve moves
Control
shift valves.
from the N
moved
the
manual
locks the primary
pressure
the pressure neutral
in Chapter Seven.
started with the selector
position.
directed to the
lated fluid
is
INTERMEDIATE RATIO.
(2) DRIVE RANGE
from the high
ratio
LOW RATIO. Forced down to the low
ratio at vehicle speeds
4 Control
Section
below approximately 16 m.p.h. or from the intermediate ratio to the low ratio at speeds below 17-23 m.p.h. can be
by depressing
obtained
When the
is completely depressed,
inward to
moved
to the shift
control pressure
directed to the back face
sure
it
is
valve
of
valve
cuts
off
to the release
and
At the end
same
pressure.
front
shift valve
Movement
Control
pressure
a
valve, and the orifice
the
pressure
directed through the
rear
of
front
servo
from the
to
2-3
band. When the front
clutch
the
to the
rear servo
is
is
valve
the low inhibitor
to drive
applied
to hold
in the low
range-low
Governor
valve
accom
are
ratio
pressure against
increases
with
the
end
vehicle speed.
At 28-34 m.p.h., governor pressure is high enough to move the low inhibitor valve inward to cut off rear servo apply front
applied
servo release pressure.
by front
sion shifts
ther
valve
inward to
clutch and
servo
The front band is and
apply pressure,
of
A
pressure.
the 2-1
time,
governor
release
pressure
moves
the front band
the transmission
shifts
to
shift valve
is
passage
to the
shift
release side of
control pressure
front
the
and
ratio.
the
Upshifts from the low pressure, from the
(5) moving
The
the
selector
lever to the
transmission cannot
is in this
position.
Lo
2-3
then
shift
is
provided
(low)
Date
by
position.
the
manual control
SERVICE
Letter No.
same
to apply
Governor
end of
the valve, is insufficient to
valve.
As
control pressure.
opposing
and rear clutch
control
long
valve against
front band
as
the
pressure on
the
move
pressures are
apply
by
valve, directed to the spring
the low inhibitor
release
upshifts are
present,
prevented.
REVERSE RANGE. The
(6) when
the
Control manual
manual valve
pressure
is
to the
Control
valve.
through the 2-1 control valve
apply the valve
band the
is
to the
rear
also
moved
front
side
servo.
Control
and rear clutch
is
front valve
the front
valve
servo, and
to
manual
With the
clutch.
and
orifice
and
servo
from the
pressure
the
at
manual
the
rear
off
cut
shift
of
obtained
reverse position.
from the
release side of
directed to the
reverse ratio of
to the
clutch
pressure
is
reverse ratio
valve, 2-3
shift
(7) PARK. The the transmission to mechanical
pawl
the internal
gear.
rear
ratio.
position,
upshift when
In the low
rear servo
range are prevented
manual
end of
A fur
apply the
to the high
range
valve,
control
At the
servo.
is directed to the
spring
shift
orifice
and
valve,
is directed
against
from the 2-1
opened
2-3
it
to
shift valve.
valve
move
rear
applied, the transmission operates
in
2 to 1.
is
P
(park)
prevent
valve
pres
the
2-3
and
1-2
pressure
shift
front
and
servo
2-3
and
valves.
the
from the
side of
shift
the front
valves
to apply the
valve
Control
to the
to lock
provided of
engaged with external
Control
directed to the apply the 2-1
is
position
movement
is directed through the downshift
LOW RANGE. The low
to the 2-1
servo and
through the downshift
through the closed valve
shift valves and
the
ends of
the transmis
from the low to the intermediate
increase in
the front
side of
pressure
to the end
to the
is directed to the apply
plished automatically.
and
Control
to apply
applied
operates
also
2.40 to 1.
Upshifts from the drive
of
is di
front band.
the
shift
band is
rear
the pinion carrier, the transmission ratio of
spring
shift valve
release
closed
to the
sun gear and
against
control valve
a check valve
the primary
clutch
rear
the low inhibitor valve, the
through
Control
the 2-3
of
the apply
valve
governor, through
clutch and
the band.
it
from the 2-1
2-3
release side of
pres
forces
is directed to the front
the downshift
is directed to the
moves
closed
valley
to
servo.
rected
shift
to the
the
passage
shift valve
pressure
and
a
Control
valves.
pressure
the
time downshift
2-1
the
of
control
side of
open
the 2-3
closed against governor pressure.
shift
to the floor.
accelerator pedal
accelerator pedal
downshift direct
the
sure
13
System
vehicle.
gear teeth on manual valve
to the
ends
is
pressure
servo and
release
side
of
rear servo.
Changes Information on
Page No.
of
also
through
LETTER REFERENCE
Subject
A
the
Chapter TWO
Maintenance
Adjustments
and
Section
Page
1
Transmission Fluid
14
2
Adjustments
15
The
procedures
the
adjust
to
needed
properly
Fordomatic transmission
maintain
and
chapter.
in
this
ly
are
given
1. The transmission
was
filled
matic
Transmission Fluid
when
adding
or
Checking
a.
using the
Apply selector
at
idle
have the
reached
selector
that the
brake,
lever in the N
tor lever to P
(neutral)
about
lever through
selector
1000-mile inter
at
all
Run the move
engine and
engine
the
transmission
temperatures,
insert it back in the
tube.
indicator is
pushed
down
way.
the
rear
on
the
of
the
the rear
pan at
leaking
here,
the
be
should
and
stall
a
tightening
at
the
if
Be
sure
that the
add enough
plate
needed.
oil pan gasket often can
install
necessary,
pan.
for leakage. In
be
proper
by
stopped
10-13
(
torque
a new gasket.
the
at
connection
trans
If leakage is found here, tighten the
connection.
Check them if
the
all
the
fluid
oil cooler
at either
lever shaft,
manual
not
here may be
nuts not
caused
for
proper
the
by loose plugs.
converter
plug
leaking
the air
the
leak tight plug.
duct. Leakage
converter cover
Check the
bolts
converter
or
by
cover
foot-pounds torque). Do
cover nuts
converter
Coat the threads
plugs.
shows
when
they
are
hot,
result.
Remove the two wrench.
replace
tightness (15-28
tighten the
leakage may
as
leaks,
the discharge
of
drain
converter
either
or
seals.
7-15 foot-pounds torque. If
stop the
Inspect the inside
both
pipe plugs on each side of
the front. If
case at
age, tighten the plug to
ening does
the throttle lever shaft
replace either or
Inspect the two hexhead transmission
loose
connections, and tighten
necessary.
If leakage is found
Remove the indi
fluid level. If necessary,
oil
the trans
necessary.
the attaching bolts to the
foot-pounds). If
mission
if
inspection
governor
gasket
new
Leakage
connection at
rubber seal
Check the fluid filler tube
dirt from the transmis
clean, then
and check
is
seal
speedometer cable
Inspect the
move
fluid level indicator cap before removing the indica tor (fig. 1). Pull the indicator out of the tube, wipe it the
housing
Replace the
mission.
selec
throughout the transmission.
all
the floor
of
for fluid leaks. If fluid is found
Check the
the transmission
the positions to make sure
clean all
mark
Leakage Check Points.
extension
lever to P (park).
Raise the hood, then
(F)
replaced.
place
position.
(park). When the
fluid level to the full
the
raise
indicator.
or
sion
cator
fluid to
Inspect the bottom
their normal operating
performance.
the transmission.
four minutes, then
fluid is distributed
Return the
improper
procedures:
then
performed complete
correctly for best Fordomatic
transmission
following
for
this type
Fluid Level.
the parking
speed
of
Auto
with
use
b.
Check the transmission fluid level vals
factory
as the use of
affect the operation
be
operations should
TRANSMISSION FLUID
Type A. Always
changing fluid
inferior fluid may
the
at
and
These
drain
with
Tighten the drain
plugs with a six-point
No. 3 Permatex plugs
to
and
install
7-10 foot-pounds
torque.
CAUTION: caused
Fig. 7
Checking
Fluid Level
ing. Be
14
by
Fluid in
engine oil
sure
to
the
discharge
leaking
determine
air
duct may be bear
past the rear main
the
exact cause
of the leak.
1 Transmission
Section
Connect the fluid filler tube to the
Transmission Fluid.
Changing
c.
tighten the
and
The transmission fluid bands
be
should
Remove the
the
use
converter
the
drain
other
the fluid filler tube at the transmission
con
Drain the
oil pan.
Add five
the
When
fluid is
the same
after
repairs
be
to
band adjustments, be fluid through a 100-mesh or
properly filter the its equivalent, as it drains from screen,
sure to
or
Filter the fluid
in the
used again
again
it is
as
the transmis
back into
poured
the transmission.
The Fordomatic transmission
closely
be
should
Be
appear.
sure
adhered
performed
that
all
in the
order
in
in this
they
which
here
given
its
the
normal
to.
place
then
its
start
normal
the
idle
derbird r.p.m.
is
speed should
it in the P
mark on
Police
NOTE:
// the
anti-stall
the throttle open
and
the
is
and
adjustment, loosen the locknut
and
adjusting scretv in speed is reached.
until
450-475
idle
it
race
the positions, then
approximate
and
car
IOV2
level
and
full
(F)
Fordomatic all
and
quarts
re
trucks),
(Thunder
made, tighten the adjusting
screw
adjustment
has been
locknut.
Manual Linkage Adjustment. the
engine
manual
turned off, disconnect the upper
shift rod
selector
from the
lever
the stop in the Dr manual
so
selector
ond
end
lever (fig. 4).
that the indicator is down
(drive)
lever in the Dr
position.
(drive)
Place the
detent (sec
from the bottom).
Rotate the est rod
manual shift rod clevis
length that
will permit
to
obtain
the clevis
pin
to
the short enter
the
speed
(fig. 2).
idle
turn the
not
adjust
screw
the correct
(clockwise)
all
the screw head. After the
Position the
idle
reached
dashpot adjusting
add
until
Police Interceptor).
rod and
against
for the Thun
carburetor
speed
and prevents
indicator. The
the
fill capacity is 9 quarts quarts (8-cylinder car),
speed until
truck engines. If the
turn the
the correct idle
screw until
r.p.m.
Do
(park) position. Check the fluid bring the level up to the
9V2
position,
tachometer. The
Interceptor engines,
limits,
these
lever through
reached. a
idle
fluid to
transmission
with
be 475-500
idle
engine
temperature.
(6-cylinder
of
(neutral)
engine at
speed
all other car and
not within
ing
Run the
idle
engine
and
for
engine.
operating temperature is
Check the correct
lever in the N
two minutes, then
about
operating
selector
enough
add
c.
selector
for
fluid. Let the
engine.
With the
Place the
of
are
Engine Idle Speed Adjustment.
a.
lower
ADJUSTMENTS
adjustments given
specifications
housing
Automatic Transmission Fluid
of
speed
quarts
more
reaches
bird
2.
converter
transmission through the filler tube. Run
idle
engine at
four
Move the
transmission
section
quarts
Type A to the
mission.
NOTE:
pan,
Install the drain
7-10 cover, and tighten them to
converter
foot-pounds torque. Install the
re
Disconnect
plug.
transmission oil
securely.
connection
plate.
fluid from the transmission, then remove the oil pan. Clean the pan thoroughly, then install it on the trans
sion.
in the
plugs
following procedures: housing lower plate, then
180
and remove
the
and
the converter drain plugs. Rotate the
move one of verter
changed
15,000-mile intervals. When
adjusted at
fluid,
changing the
be
should
15
Fluid
holds speed
dashpot
the correct
idle
Anti-Stall Dashpot Adjustment.
b.
After the
engine
idle
turn the ignition switch
speed
has been properly adjusted,
off and adjust
the anti-stall dash-
pot.
Loosen the dashpot adjusting throttle
justing the
in the screw
screw
closed
out
pushes
position,
screw
and
locknut. Hold the
turn the
(counterclockwise)
until
dashpot the
ad
head
of
the dashpot rod up to the end of its
travel (fig. 3).
Turn the dashpot adjusting turns to
obtain a clearance of
Screwdriver screw
in
(clockwise)
5616
1 V2-2
0.045-0.064 inches between
Fig. 2
Engine Idle Speed Adjustment
8-Cylinder
16
Chapter
II Maintenance and
Adjustments
6410
Thunderbird
Selector Lever
Fig. 5
the transmission
manual
lever in the Dr
(drive) detent
(second from the front). Adjust the length the
locknuts
clevis
lever. Turn the lock install the
Anti-Stall Dashpot Adjustment
Fig. 3
nuts.
grommet
in the
lever. Turn the
selector
install the
tional turns counterclockwise, then
Lock the pointer
clevis
in
alignment
for
The Thunderbird dome in front
depressing positions
of
The
manual
rant
is
against
MANUAL
SHIFT
addi
clevis pin.
locknut. Check the the
selector
lever is located
on
on
rear are
P
and
manual
from the
selector
selector so
that the
the stop in the
ROD CLEVIS
(park), R (reverse),
Lo (low) (fig. 5). is connected from the selector
(drive),
lever. Disconnect the
Dr (drive
)
the
position.
quad
manual shift rod
the
clevis pin enters
nuts one
Lock the
by turning the
selector
turn counterclockwise, then
in
clevis
pointer alignment
the lock-
place with
for
the
all positions of
lever.
Check the
The
starter circuit
circuit must
be
open
in
in
loosen the
column
screws.
starter
attaching circuit
is
closed
all selector
lever
positions.
all positions except
tral). To adjust,
neutral
Position the
when
the
N (neu
to
steering
switch so
that the
switch
selector
lever is
at
N
(neutral). e.
Throttle Linkage Adjustment. The throttle linkage
at
the
Starter Neutral Switch Adjustment.
d.
lever.
indicator
Check the
selector
lever.
the tunnel
The lever may be moved by the end of the lever. The lever
shift rod
manual shift rod
two
seat.
lever to the transmission
Position the
the
all positions of
from front to
N (neutral), Dr
with
selector
the
button
a
place
clevis
clevis.
of
until
6)
used with
differs from the linkage
on
the 6-cylinder cars (fig.
the 8-cylinder
cars
(fig.
7),
Position
MANUAL SHIFT ROD
ACCELERATOR PEDAL
SELECTOR
ARM
STARTER
Fig. 4
NEUTRAL
SWITCH
Manual Linkage
5514
5628
Fig. 6
Throttle Linkage
6-Cy/inder
