automatic transmission FORD MUSTANG 1969 Volume One Chassis

03-10-03
Ford-Thompson Power Steering Pump

03-10-03

EIGHT CYLINDER WITH

AIR CONDITIONER

1.
Remove the power steering fluid

from the pump reservoir by discon-

necting the fluid return hose from the

reservoir and allow the fluid to drain

in a suitable container.

2.
Disconnect the pressure hose

from the pump.

3.
Remove 3 bolts from the front of

the pump and the one nut at the rear

that attach the pump to the mounting

bracket and remove the drive belt

from the pump pulley.

4.
Loosen the upper pump bracket-

to-engine attaching bolt and remove

the bolt in the belt adjusting slot. Re-

move the pump.

5.
Position the pump to the bracket

and install the bracket-to-pump at-

taching bolts and nuts. Tighten to spe-

cifications.

6. Place the belt on the pump pul-

ley. Adjust the belt tension as outlined

in Section 2 and tighten the bolts and

nut to specification.

7.
Torque the pressure hose fitting

hex nut to specification. Then, connect

the pressure hose to the fitting and

torque the hose nut to specification.

8. Connect the return hose to the

power steering pump and tighten the

clamp.

9. Fill the pump with automatic

transmission fluid C1AZ-19582-A.

Bleed the air from the system (Part

3-1) and check for leaks and again
check the fluid level. Add fluid as re-

quired.

POWER STEERING PUMP

PULLEY REPLACEMENT

REMOVAL

1.
Drain as much of the fluid as

possible from the pump through filler

pipe.

2.
Install a 3/8-16 inch capscrew in

the end of the pump shaft to prevent

damage to the shaft end by the tool

screw.

3.
Install the pulley remover, Tool

T63L-1O3OO-B, on pulley hub, and

place the tool and pump in a vise as

shown in Fig. 3.

4.
Hold the pump and rotate the

tool nut counterclockwise to remove

the pulley (Fig. 3). The pulley must be

removed without in and out pressure

on the pump shaft to prevent damage

to internal thrust areas.

INSTALLATION

1.
Position the pulley to the pump

shaft and install Tool T65P-3A733-A

as shown in Fig. 4.

2.
Hold the pump and rotate the

tool nut clockwise to install the pulley

on the shaft. The pulley face will be

flush with end of pump shaft. Install

the pulley without in and out pressure
on the shaft to prevent damage to in-

ternal thrust areas.

3.
Remove the tool.

POWER STEERING PUMP

RESERVOIR REPLACEMENT

Reservoir replacement must be done

on a clean workbench. Cleanliness of

work area and tools is extremely im-

portant when repairing any hydraulic

unit. Thoroughly clean the exterior of

the pump with a suitable cleaning sol-

vent. Do not clean, wash or soak the

shaft oil seal in solvent. Plug the inlet

and outlet openings with plugs or

masking tape before cleaning the

pump exterior or removing the reser-

voir.

REMOVAL

1.
Assemble the adapter plate (Tool

T69P-3A674-A) to the bench mounted

fixture tool (T57L-5OO-A). Position

the pump and pulley on the adapter

plate, pulley facing down.

2.
Remove the outlet fitting hex nut

and the service identification tag.

3.
Invert the pump so the pulley is

facing up and remove the reservoir by

tapping around the flange with a wood

block (Fig. 5).

4.
Remove the reservoir O-ring seal

and the outlet fitting gasket from the

pump.

INSTALLATION

Tool • T 63 L-

10300 -

G 1477 A

FIG. 3—Removing Power

Steering Pump Pulley
1478 A

FIG. 4—Installing Power

Steering Pump Pulley
1.
Install a new gasket on the outlet

fitting and a new reservoir O-ring seal

on the pump housing plate (Fig. 6).

The old gasket and seal should never

be re-used.

Too/
T57L 500-A

G1602-A

FIG. 5—Removing Pump

Reservoirprocarmanuals.com

03-11-02
Eaton Power Steering Pump

03-11-02

gasket. Withdraw the fluid with a suc-

tion gun.

2.
Remove the reservoir bracket-

to-cylinder block upper cap screw and

the lower cap screw and spacer.

3.
Disconnect the reservoir infet line

and the outlet line at the reservoir,

and remove the reservoir.

Installation

1.
Connect the reservoir-to-pump

line (outlet line) at the reservoir, but

do not tighten the clamp.

2.
Attach the reservoir and bracket

to the cylinder block with the upper

cap screw and the lower cap screw

and spacer. Tighten the cap screws.

3.
Tighten the outlet line clamp at

the reservoir. Connect the reservoir

inlet line to the reservoir.

4.
Fill the reservoir with the speci-

fied automatic transmission fluid. Run

the engine, and bleed the system by

cycling the steering gear with the

windshield wipers turned on. Check

for leaks, and recheck the fluid level.
WITH AIR CONDITIONING

Removal

1. Raise the front of the vehicle.

Remove the reservoir-to-pump line

(outlet line) clamp at the reservoir,

but do not disconnect the line at this

time.

2.
Disconnect the reservoir inlet line

at the reservoir.

3.
Remove the reservoir bracket to

the cylinder block upper cap screw.

Support the reservoir and remove the

lower cap screw and spacer.

4.
With a drain pan under the res-

ervoir, disconnect the outlet line hose

from the reservoir tube and allow the

fluid to drain.

5.
Remove the reservoir cover re-

taining nut and the cover. Position the

cover and the reservoir out of the way

and allow them to rest in the engine

compartment.

6. Lower the front of the vehicle.

Remove the fan shroud.

7.
Remove the reservoir and the
cover by manipulating them through

the opening between the radiator and

the compressor drive belt.

Installation

1.
Position the reservoir in the en-

gine compartment. Loosely attach the

reservoir and bracket to the cylinder

block with the upper cap screw.

2.
Install the fan shroud, then raise

the front of the vehicle.

3.
Connect the reservoir-to-pump

line (outlet line) at the reservoir.

4.
Install the reservoir bracket-

to-cylinder block lower cap screw and

spacer. Tighten both the upper and

the lower cap screws.

5.
Connect the reservoir inlet line at

the reservoir. Install the clamps on

both lines. Lower the car, and install

the reservoir cover and attaching nut.

6. Fill the reservoir with the speci-

fied automatic transmission fluid. Run

the engine, and bleed the system by

cycling the steering gear with the

windshield wipers turned on. Check

for leaks, and recheck the fluid level.

3 MAJOR REPAIR OPERATIONS

INSULATOR (2)

WASHER (2)

MOUNTING BOLT (2)

COVER

BOLT (7)
DOWEL
PIN (2)

ROTOR

ROTOR
SHAFT

COVER
SEAL
PLUG

O RING

VALVE
ASSEMBLY

VALVE
SPRING

INSULATOR

HOUSING

CAM RING

PRESSURE
PLATE
,
PUMP

i
HOUSING

SEAL

ROLL

PIN

INSULATOR

RETAINER
RING
TUBE SEAT

O RING

SCREW
(2)

G12O8-B

FIG.
1
— Power Steering Pumpprocarmanuals.com

03-11-03

Eaton Power Steering Pump

03-11-03

POWER STEERING PUMP

DISASSEMBLY

A clean working area should be

used when overhauling the power

steering pump. Foreign matter picked

up on working parts may cause dam-

age or failure of the unit. Clean con-

tainers should be used for parts.

1.
Drain the fluid from the pump.

Remove the pump cover-to-housing

cap screws (Fig. 1). Place the pump

on the bench, cover side down. Lift

the housing from the cover.

2.
Remove the large and the small

O-rings from the pump cover. Remove

the O-ring from the pressure plate

hub.

3.
Remove the pressure plate-

to-cover screws, and remove the plate.

Lift the cam ring off the dowel pins.

4.
Remove the rollers. Lift the

rotor off the shaft, and remove the

drive key from the shaft. Remove the

dowel pins from the cover.

5.
Remove the rotor shaft from the

cover. Do not remove the snap ring

from the shaft unless it, or the shaft,

is damaged.

6. Pry the rotor shaft seals out of

the cover and the housing.

7. Do not disturb the control valve

unless diagnosis indicated a control

valve problem or foreign matter in the

valve. To remove the valve, drive the

roll pin out of the housing. Remove

the plug and O-ring, control valve,

and the spring. If the plug or valve is

stuck, tap the end of the housing on a

piece of wood or tap it with a soft-

faced hammer. Remove the O-ring

from the plug.

ASSEMBLY

Apply automatic transmission fluid

to all parts as they are assembled. Al-

ways use new seals and O-rings.

1.
Install the control valve spring in

the housing. Install the valve with the

small sensing hole in the end of the

valve toward the spring. Install a new

O-ring on the plug. The plug O-ring is

1/8 inch smaller in diameter than the

bypass O-ring. Make sure the proper

O-ring is used. Install the plug and a

new roll pin (Fig. 1).

2.
The rotor shaft oil seals are in-

stalled in the cover and the housing

with Tool 3583-J, which consists of a

driver and an adapter. The procedure

is as follows:

a. Support the cover on wood

blocks (Fig. 2) to provide tool clear-

ance.
Use clean blocks that will not

nick or damage the inner face of the

cover.
b.
Start the seal (metal shell up-

ward) square!y into the bore with fin-

ger pressure. Place the adapter on the

driver with the square corner of the

FIG. 2—Preparation for Installing

Rotor Shaft Seals

adapter toward the seal (Fig. 2). Drive

the seal into the cover, as shown in

Fig. 3, until it bottoms.

Driving the seal beyond this point

can damage it. Install the seal in the

pump housing in the same manner.

3.
Install the rotor shaft in the

FIG. 3—Installing Rotor

Shaft Seals
cover as shown in Fig. 4 to prevent

damage to the seal.

4.
Install the dowel pins in the

cover. Place the rotor drive key in the

shaft. Install the rotor on the shaft

with the drive key groove aligned with

the key and the counterbored side of

the rotor toward the cover so that it

goes over the snap ring.

5.
Place the cam ring on the dowel

pins with the chamfered edge upward

(Fig. 5). Place the rollers in the rotor.

6. Place the pressure plate on the

dowel pins. Install and tighten the

screws to 20 in-lbs torque. Install the

O-ring on the pressure plate hub. In-

stall O-rings in the groove at the fluid

bypass hole and around the cam ring

(Fig. 6).

7.
Place the tool shown in Fig. 6 in

the rotor shaft to prevent damage to

the oil seal, then install the housing on

the cover. Install and torque the cap

screws to 15-20 ft-lbs.

FIG. 5—Cam Ring Installation

FIG. 4—Installing Rotor Shaft

in Cover

FIG. 6—O-Ring Installationprocarmanuals.com

05-01-03
Drive Shaft

05-01-03

DUST SEAL-4859

BALL SOCKET-4A031

UNIVERSAL

JOINT KIT-4635

WASHER

BALL SEAT i \ SPRING

BEARING \\ RETAINER

SEAL

0 \ X \
CENTER

\ \ RETAINER \ YOKE-47R4

SPRING \

BALL SOCKET-4A031

SLIP YOKE-4841

C1770-A

FIG.
3—Drive Shaft and Universal Joints Disassembled —Thunderbird, Continental Mark

REMOVAL AND INSTALLATION

REMOVAL

1.
To maintain drive line balance,

mark the relationship of the rear drive

shaft yoke and the drive pinion flange

of the axle (if the yellow alignment

marks are not visible) with the shaft

so that they may be installed in their

original positions.

2.
Disconnect the rear U-joint or

rear double cardan joint from the

companion flange. Wrap tape around

the loose bearing caps to prevent

them from falling off the spider. Pull

the drive shaft toward the rear of the

vehicle until the slip yoke clears the

transmission extension housing and

the seal. On Lincoln Continental

models, remove the three roller bear-

ing assemblies off the spline teeth in-

side the slip yoke (Fig. 3). Install the

appropriate tool in the extension

housing to prevent lubricant leakage.

INSTALLATION

1.
If either the rubber seal on the

output shaft or the seal in the end of

the transmission extension housing is
damaged in any manner, replace the

seal or seals as required. Also, if the

lugs on the axle pinion flange are

shaved or distorted so that the bear-

ings slide, replace the flange.

2.
On Lincoln Continental models,

install the bearing assemblies over the

spline teeth in the slip yoke. Lubricate

the yoke spline with B8A-19589-A lu-

bricant. This spline is sealed so that

the transmission fluid does not

"wash" away the spline lubricant

(Figs.
4 and 5). Remove the tool from
the extension housing. Install the yoke

on the transmission output shaft. Do

not allow the yoke assembly to bot-

tom on the output shaft with excessive

force.

Install the drive shaft so that the

index marks or the yellow mark (if

visible) on the yoke (light side) is in

line with the yellow mark on the com-

panion flange. This prevents vibration

which occurs when the balance of the

shaft and balance of the axle pinion

flange become additive instead of neu-

01L SEAL (AUTOMATIC TRANSMISSION ONLY)

YOKE

SNAP RING (WRAP TYPE)

. 4—Output Shaft Spline Seal — All except Continental

Mark III and Thunderbird
E U73-Cprocarmanuals.com

07-01-01

07-01-01

*.v:;V*>
-"^g&ly-

'y.y... -4^*:
GROUP

7

PART
7-1
PAGE

General Transmission Service
07-01-01

PART
7-2

C4 Automatic Transmission
07-02-01

PART
7-3

FMX Transmission
07-03-01
PART
7-4

C6 Automatic Transmission
....

PART
7-5

Specifications
PAGE

07-04-01

07-05-01

TRANSMISSION

CODE
TRANSMISSION

TYPE

AUTOMATIC
(C4)

U AUTOMATIC
(C6)

X AUTOMATIC
(FMX)

Z AUTOMATIC
(C6
SPECIAL)

D2040-A

FIG. 1—Typical Warranty Plate—Transmission Identification

PART
7-1
General
Transmission
Service

COMPONENT INDEX

AIR PRESSURE CHECKS

ANTI-STALL DASHPOT CLEARANCE

CHECK

(Engine Compartment)

CASE (Transmission)

Inspection

CONTROL PRESSURE CHECK

CONTROL VALVE BODY

Inspection

CONVERTER

Checking

Cleaning

DRAIN AND REFILL (Transmission)

ENGINE IDLE SPEED CHECK

EXTENSION HOUSING INSPECTION

FLUID AERATION CHECK
MODEL APPLICATION
All
Models

01-06

01-04

01-17

01-05

01-17

01-04

01-11

01-08

01-04

01-15

01-03
Ford
Mercury
Meteor
Cougar
Fairiane
Falcon
Montego
Mustang
Lincoln-
Continental
Thunderbird
Continental-
Mark
III

A page number indicates that the item
is for
the vehicle listed
at
the head
of
the column.

N/A indicates that the item
is not
applicable
to
the vehicle listed.
procarmanuals.com

07-01-03

General Transmission Service

07-01-03

COMPONENT INDEX

FMX Transmission

REAR SUPPORT (FMX)

Inspection

SHIFT POINT CHECKS

STATOR ONE-WAY CLUTCH CHECK

STATOR TO IMPELLOR INTERFERENCE

CHECK

STATOR TO TURBINE INTERFERENCE

CHECK

TRANSMISSION CLEANING

TURBINE AND STATOR END PLAY

CHECK

VACUUM DIAPHRAGM ADJUSTMENT

Altitude Compensating Type

Non-Altitude Compensating Type

VACUUM UNIT CHECK

Altitude Compensating Type

Non-Altitude Compensating Type
MODEL APPLICATION
All
Models

01-06

01-12

01-12

01-12

01-11

01-12
Ford
01-17

01-16

N/A

01-08

N/A

01-05
Mercury
N/A

N/A

N/A

01-08

N/A

01-05
Meteor
01-17

01-16

N/A

01-08

N/A

01-05
Cougar
01-17

01-16

N/A

01-08

N/A

01-05
Fairlane
01-17

01-16

N/A

01-08

N/A

01-05
Falcon
N/A

N/A

N/A

01-08

N/A

01-05
Montego
01-17

01-16

N/A

01-08

N/A

01-05
Mustang
01-17

01-16

N/A

01-08

N/A

01-05
Lincoln-
Continental
N/A

N/A

01-09

N/A

01-06

N/A
Thunderbird
N/A

N/A

01-09

N/A

01-06

N/A
Continental-
Mark
III
N/A

N/A

01-09

N/A

01-06

N/A

A page number indicates that the item is for the vehicle listed at the head of the column.

N/A indicates that the item is not applicable to the vehicle listed.

Three different three-speed trans-

missions are used. The C4 Automatic,

C6 Automatic and the FMX Auto-

matic. Part 7-1 covers testing, com-
mon adjustments and repairs, and

cleaning and inspection for the three

types of transmissions. Where there
are differences in procedures or speci-

fications, the type of transmission af-

fected will be designated.

l
AUTOMATIC TRANSMISSION TESTS

When diagnosing transmission

problems, refer to the Ford Car and

Truck Diagnosis Manual for the de-

tailed information on the items that

could be causing the problem.

The following preliminary checks

should be made before proceeding

with other diagnosis checks.

TRANSMISSION FLUID LEVEL

CHECK

1.
Make sure that the vehicle is

standing level. Then firmly apply the

parking brake.

2.
Run the engine at normal idle

speed. If the transmission fluid is cold

run the engine at fast idle speed

(about 1200 rpm) until the fluid reach-

es its normal operating temperature.

When the fluid is warm, slow the en-

gine down to normal idle speed.

3.
On a vehicle equipped with a

vacuum brake release, disconnect the

release line and plug the end of the
line;
otherwise the parking brake will

not hold the transmission in any drive

position.

4.
Shift the selector lever through

all positions, and place the lever at P.

Do not turn off the engine during the

fluid level checks.

5.
Clean all dirt from the transmis-

sion fluid dipstick cap before remov-

ing the dipstick from the filler tube.

6. Pull the dipstick out of the tube,

wipe it clean, and push it all the way

back into the tube. Be sure it is prop-

erly seated.

7.
Pull the dipstick out of the tube

again, and check the fluid level. The

fluid level should be above the ADD

mark. If necessary, add enough fluid

to the transmission through the filler

tube to bring the level between the

ADD and FULL marks on the dip-

stick. Do not overfill the transmission.

Install the dipstick, making sure it is

fully seated in the tube.
8. Connect the vacuum brake re-

lease line if so equipped, and test it

for proper operation.

FLUID AERATION CHECK

A fluid level that is too high will

cause the fluid to become aerated:

Aerated fluid will cause low control

pressure, and the aerated fluid may be

forced out the vent.

Check the transmission fluid level.

Low fluid level can affect the opera-

tion of the transmission, and may in-

dicate fluid leaks that could cause

transmission damage.

TRANSMISSION FLUID

LEAKAGE CHECKS

Check the speedometer cable con-

nection at the transmission. Replace

the rubber seal if necessary.

Leakage at the oil pan gasket often

can be stopped by tightening the at-
procarmanuals.com

07-01-05
General Transmission Service

07-01-05

linkage may cause crossleakage and

subsequent transmission failure. Refer

to Linkage Adjustments in Part 7-2,

7-3 or 7-4 for detailed manual linkage

adjustment procedures.

CONTROL PRESSURE

CHECK

When the vacuum diaphragm unit is

operating properly and the downshift

linkage is adjusted properly, all the

transmission shifts (automatic and

kickdown) should occur within the

road speed limits specified in Part 7-5.

If the shifts do not occur within

limits or the transmission slips during

shift point, the following procedure is

suggested to determine engine, trans-

mission, linkage, vacuum diaphragm

unit or valve body problems.

1.
Using the automatic transmis-

sion tester (Fig. 4), attach the tachom-

eter to the engine and the vacuum

gauge to the transmission vacuum line

at the vacuum unit (Fig. 5).

D 1823-A

. 4—Rotunda ARE-2905

Automatic Transmission Tester

T - FITTING
2.
Attach the pressure gauge to the

control pressure outlet at the trans-

mission (Figs. '., and 7).

3.
Firmly apply the parking brake

and start the engine.

On a vehicle equipped with a vacu-

um brake release, apply the service

brakes. The parking brake can not be

used because the brake automatically

VACUUM DIAPHRAGM UNIT

CLIP

I

| CONTROL PRESSURE TAKE-OFF HOLE

D2041-A

FIG. 6—Typical Vacuum

Diaphragm and Control Pressure

Connecting Point
releases when the transmission selec-

tor lever is moved to a drive position.

4.
Adjust the engine idle speed lo

the specified rpm. If the engine idle

speed cannot be brought within limits

by adjustment at the carburetor idle

adjustment screw, check the throttle

and downshift linkage for a binding

condition. If the linkage is satisfacto-

ry, check for vacuum leaks in the

transmission diaphragm unit (Fig. 8

or 9) and its connecting tubes and

hoses.
Check all other vacuum oper-

ated units (such as the power brake)

for vacuum leaks.

VACUUM UNIT CHECK

NON-ALTITIDE

COMPENSATING TYPE

To check the vacuum unit for dia-

phragm leakage, remove the unit from

the transmission. Use a distributor

D1840-A

FIG. 8—Testing Transmission

Vacuum Unit for Leakage

VACUUM DIAPHRAGM

D 1643 -C

FIG. 5—Typical Vacuum Test

Line Connections
FIG.
7—Vacuum
Diaphragm and Control and TV Pressure Connecting

Points—C6 Transmissionprocarmanuals.com

07-01-07

General Transmission Service

07-01-07

PUMP IN

INTERMEDIATE

SERVO RELEASE
REVERSE AND

HIGH CLUTCH

INTERMEDIATE

SERVO APPLY

GOVERNOR PRESSURE

TO VALVE BODY
FORWARD

CLUTCH

PUMP OUT

CONVERTER IN

CONTROL

PRESSURE

TO PRIMARY

THROTTLE VALVE

PRIMARY THROTTLE

PRESSURE-TO-VALVE

BODY

PRIMARY THROTTLE

VALVE EXHAUST
LOW AND

REVERSE SERVO

CONTROL PRESSURE

TO GOVERNOR

D1841-A

FIG. 70—Case Fluid Passage Hole Identification—C4 Automatic
FRONT PUMP FRONT GOVERNOR

DISCHARGE CLUTCH OUTPUT

FRONT FROM

PUMP CONVERTER REAR

INTAKE SERVO
REAR

CLUTCH

D1932-A

FIG. 12—Case Fluid Hole

Identification—FMX Transmission

in the vehicle, check the hydraulic sys-

tem to make sure it is operating prop-

erly. These hydraulic tests can be

made on the bench so that most mal-

functions of the system can be cor-

rected before the transmission is in-

stalled in the vehicle.

TESTING TOOL

INSTALLATION

SERVO RELEASE

SERVO APPLY
PUMP SUCTION REVERSE-HIGH FORWARD CLUTCH

APPLY APPLY
CONVERTER CHARGE

PUMP PRESSURE

TV PRESSURE

LINE PRESSURE

TV PRESSURE

EXHAUST

-S>*REVERSE CLUTCH

GOVERNOR PRESSURE CONTROL PRESSURE

OUT PUT GOVERNOR
APPLY
1.
Install a plug in the filler tube

hole in the case or pan, and pour

about four quarts of clean transmis-

sion fluid into the transmission

through the speedometer gear open-

ing.

2.
Remove the vacuum diaphragm

unit and the diaphragm unit control

rod, and reinstall the vacuum unit if

these parts had been previously in-

stalled.

Tool-7003

D1587-B
D1933-A

FIG.
7
7—Case
Fluid Passage Hole Identification—C6 Automatic
FIG. 73—Bench Testing Tool

Installation—Typicalprocarmanuals.com

07-01-08
General Transmission Service

07-01-08

3.
Install the bench testing tool on

the transmission.

4.
Remove the
1/8-inch
pipe plug

at the transmission case. Turn the

front pump in a clockwise direction at

75-100 rpm until a regular flow of

transmission fluid leaves the hole in

the transmission case. This operation
bleeds the air from the pump.

5.
Install the pressure gauge (77820

or T57L-77820-A) as shown in Fig.

13.

PRESSURE TESTS

Turn the front pump at 75-100 rpm
and note the gauge readings. The

pressure readings on the bench test

must be within the limits as outlined

in Figure 13, for the engine idle check.

If pressure gauge readings are with-

in limits in all selector lever positions,

install the vacuum diaphragm control

rod unit.

COMMON ADJUSTMENTS AND REPAIRS

TRANSMISSION FLUID DRAIN

AND REFILL

Normal maintenance and lubrica-

tion requirements do not necessitate

periodic automatic transmission fluid

changes.

If a major repair, such as a clutch

band, bearing, etc., is required in the

transmission, it will have to be re-

moved for service. At this time the

converter, transmission cooler and

cooler lines must be thoroughly

flushed to remove any dirt.

When filling a dry transmission and

converter, install five quarts of fluid.

Start the engine, shift the selector

lever as outlined below, and check and

add fluid as necessary.

Following are the procedures for

partial drain and refill due to in-

vehicle repair operation.

C4 TRANSMISSION

1.
On PEA models, disconnect the

fluid filler tube from the transmission

oil pan to drain the fluid.

On PEB and PEE models, loosen

the pan attaching bolts to drain the

fluid from the transmission.

2.
When the fluid has stopped

draining from the transmission, re-

move and thoroughly clean the pan

and the screen. Discard the pan gas-

ket.

3.
Place a new gasket on the pan,

and install the pan on the transmis-

sion.

4.
On PEA models, connect the

filler tube to the pan and tighten the

fitting securely.

5.
Add three quarts of fluid to the

transmission through the filler tube.

6. Run the engine at idle speed for

about two minutes, and then run it at

fast idle speed (about 1200 rpm) until

it reaches it's normal operating temp-

erature. Do not race the engine.

7.
Shift the selector lever through

all the positions, place it at P, and

check the fluid level. The fluid level

should be above the ADD mark. If
necessary, add enough fluid io the

transmission to bring the level be-

tween the ADD and FULL marks on

che dipstick. Do not overfill the trans-

mission.

FMX OK C6

TRANSMISSION

1.
Raise the vehicle on a hoist or

jack stands.

2.
Place a drain pan under the

transmission.

3.
Loosen the pan attaching bolts

to drain the fluid from the transmis-

sion.

4.
After the fluid has drained to the

level of the pan flange, remove the

rest of the pan bolts working from the

rear and both sides of the pan to

allow it to drop and drain slowly.

5.
When the fluid has stopped

draining from the transmission, re-

move and thoroughly clean the pan

and the screen. Discard the pan gas-

ket.

6. Place a new gasket on the pan,

and install the pan on the transmis-

sion.

7.
Add three quarts of fluid to the

transmission through the filler tube.

8. Run the engine at idle speed for

about two minutes, and then run it at

fast idle speed (about 1200 rpm) until

it reaches normal operating tempera-

ture.
Do not race the engine.

9. Shift the selector lever through

all the positions, place it at P, and

check the fluid level. The fluid level

should be above the ADD mark. If

necessary, add enough fluid to the

transmission to bring the level be-

tween the ADD and FULL marks on

the dipstick. Do not overfill the trans-

mission.

OIL COOLER TUBE

REMOVAL AND INSTALLATION

When fluid leakage is found at the

oil cooler, the cooler must be re-

placed. Cooler replacement is de-

scribed in the Cooling System Section

of Group 11.
When one or more of the fluid

cooler steel tubes must be replaced,

each replacement tube must be fabri-

cated from the same size steel tubing

as the original line.

Using the old tube as a guide, bend

the new tube as required. Add the

necessary fittings, and install the tube.

After the fittings have been tight-

ened, add fluid as needed, and check

for fluid leaks.

VACUUM DIAPHRAGM

ADJUSTMENT NON-ALTITUDE

COMPENSATING TYPE

The C4 and C6 transmissions are

equipped with an adjustable vacuum

diaphragm assembly. A similar ad-

justable diaphragm has been released

for service with the FMX transmis-

sion. However, the FMX service dia-

phragm is not interchangeable with

that used on C4 and C6 models.

The vacuum diaphragm assembly

has an adjusting screw in the vacuum

hose connecting tube (Fig. 14).

SPRING

SEAT

THIS CLEARANCE CHANGED

BY ADJUSTING SCREW

D1830-A

FIG. 14—Adjustable Vacuum Unit

The inner end of the screw bears

against a plate which in turn bears

against the vacuum diaphragm spring.

All readings slightly high or all

readings slightly low may indicate the

vacuum unit needs adjustment to cor-

rect a particular shift condition.procarmanuals.com

07-01-11
General Transmission Service

07-01-11

STOP
PIN

GROMMET

Tool - T67P-734LA

GROMMET

LEVER

CONTROL ROD REMOVAL
GROMMET INSTALLATION

Tool - T67P-734LA

r

CONTROL ROD INSTALLATION
3/16"-1/4'

CONTROL ROD

STOP
PIN

FIG. 18—Removing
or
Installing Shift Linkage Grommet
D 1742-A

MANUAL SHIFT LINKAGE

GROMMET REPLACEMENT-

COLUMN SHIFT

The manual lever assembly
on ve-

hicles equipped with
a
column shift
in-

corporates
an oil
impregnated plastic

grommet
in the end of the
lever
arm.

A special tool T67P-7341-A
is re-

quired
to
install
the
grommet
in the

manual lever,
and to
install
the
manu-

al linkage
rod
into
the
grommet.
Re-

move
and
install
the
grommet
as fol-

lows:

1.
Place
the
lower
jaw of the
tool

between
the
manual lever
and the con-

trol
rod.
Position
the
stop
pin
against
the
end of the
control
rod (Fig. 18)

and force
the rod out of the
grommet.

Remove
the
grommet from
the
manu-

al lever
by
cutting
off the
large shoul-

der with
a
sharp knife.
The
grommet

must
be
removed from
the
manual

lever
and a new one
installed each

time
the rod is
disconnected.

2.
Before installing
a
new grommet,

adjust
the
stop
pin to 1/2
inch
and

coat
the
outside
of the
grommet with

lubricant. Then, place
the
grommet
on

the stop
pin and
force
it
into
the
man-

ual lever hole. Turn
the
grommet
sev-

eral times
to be
sure
it is
properly

seated.

3.
Readjust
the
stop
pin to the
height shown
in Fig. 18. The pin

height
is
determined
by the
length
of

the
rod end
which
is to be
installed

into
the
grommet.
If the pin
height
is

not adjusted,
the
control
rod may be

pushed
too far
through
the
grommet

causing damage
to the
grommet
re-

taining
lip.

4.
With
the pin
height properly
ad-

justed, position
the
control
rod on the

tool
and
force
the rod
into
the
grom-

met until
the
groove
in the rod
seats

on
the
inner retaining
lip of the
grom-

met.
Be
sure
the rod
protrudes

through
the
grommet approximately

1/4 inch after installation.

CLEANING
AND
INSPECTION

CLEANING

TRANSMISSION

Clean
the
parts with suitable solvent

and
use
moisture-free
air to dry off all

the parts
and
clean
out oil
passages.

The composition clutch plates,

bands
and
synthetic seals should
not

be cleaned
in a
vapor degreaser
or
with
any
type
of
detergent solution.

To clean these parts, wipe them
off

with
a
lint-free cloth.
New
clutch

plates
or
bands should
be
soaked
in

transmission fluid
for
fifteen minutes

before
the
plates
or
bands
are as-

sembled.

CONVERTER

The converter cannot
be
disas-

sembled
for
cleaning.
If
there
is rea-
son
to
believe that
the
converter
con-

tains
an
excessive amount
of
foreign

material,
it
should
be
thoroughly

cleaned.
See the
instructions provided

with
the
Rotunda Automatic Trans-

mission Torque Converter
and
Cooler

Cleaner LRE-60081.

OIL COOLER

When
a
clutch
or
band failure
or

other internal trouble
has
occurred
inprocarmanuals.com