SERVICE BULLETIN QUALITY INFORMATION ANALYSIS
OVERSEAS SERVICE DEPT. MITSUBISHI MOTORS CORPORATION
SERVICE BULLETIN No.: MSB-99E23-503
Date: 1999-12-15 <Model> <M/Y>
Subject: CHANGES IN AND CORRECTION TO FRONT (EC) SPACE 99-10
WHEEL DRIVE A/T WORKSHOP MANUAL WAGON (N84W) 99-10
Group: AUTOMATIC Draft No.: 99TA532317 (EC) GALANT
TRANSAXLE (EA0)
CORRECTION INTERNATIONAL
CAR
ADMINISTRATION T.NITTA - PROJECT LEADER
OFFICE AFTER SALES SERVICE & CS
PROMOTION
1. Description:
On the cars equipped with automatic transmission with one-way clutch, the following modifications
have been made.
Modification A: The 1999 transmission models (F4A42 with one way clutch for 2.4-liter and 2.5
liter engine equipped cars) have been added.
Modification B: On some models equipped with the F4A42 transmission, the service
procedures for the low-reverse brake have been changed due to addition of the
one-way clutch.
(1) The special tool has been added.
(2) The transmission diasassembly/reassembly procedures have been
changed.
(3) The overdrive planetary carrier disassembly/reassembly procedures have
been changed to the planetary carrier assembly reassembly/disassembly
procedures
Modification C: On all the models equipped with the F4A51 transmission, the service
procedures for the low-reverse brake have been corrected due to addition of the
one-way clutch.
(1) The transmission disassembly/ reassembly procedures have been
corrected.
(2) The overdrive planetary carrier disassembly/reassembly procedures have
been corrected to the planetary carrier assembly reassembly/disassembly
procedures
Modification D: On some models equipped with the F4A42 transmission, the number of the
transfer drive gear mounting bolts has been changed from 4 to 7.
Modification E: On all the models equipped with the F4A51 transmission, the four bolts for
mounting the transfer drive gear have been corrected to the eight bolts.
Modification F: On some models equipped with the F4A42 transmission, the transfer drive gear
tightening torque has been changed from 19 Nm to 34 Nm.
2. Applicable Manuals:
Manual Pub. No. Language Page(s)
Front Wheel Drive Automatic PWEE9514-D (English) 23A-1-2, 23A-1-9,
Transmission (E-W) PWES9515-D (Spanish) 23A-2-4, 23A-3-4,
Workshop Manual PWEF9516-D (French) 23A-3-5d,23A-3-13,
PWEG9517-D (German) 23A-3-15, 23A-3-17,
PWED9518-D (Dutch) 23A-3-21, 23A-3-23,
PWEW9519-D (Swedish) 23A-7-1
3. Effective Date:
• All models of Space Wagon (N84W):
From the first production car for Modifications B, D and F.
• From December 1, 1998 for Modifications B.
Effective Model: JD2563
From January 1, 1998 for Modifications D and F.
Effective Model: GM6015
4. Details:
Front Wheel Drive Automatic Transmission (E-W) Workshop Manual, page 1-14
23A-1-2 AUTOMATIC TRANSMISSION (E-W) - Specifications
Transmission model Speedometer Final gear ratio Vehicle model Engine model
gear ratio
F4A41-1-M8A1 31/36 4.042 CJ4A, CK4A 4G92
F4A41-1-M8A4 31/36 4.042 CJ2A, CK2A 4G15
F4A41-1-M8A5 31/36 4.042 CK1A 4G13
EXP F4A42-1-M6A 29/36 4.042 EA1A 4G93
F4A42-1-M6A2 29/36 4.042 EA2A 4G63
F4A42-1-E6A 29/36 3.770 EA5A 6A13
F4A42-1-E5B 29/36 3.735 F36A 6G72
MODEL 1999
Transmission model Speedometer Final gear ratio Vehicle model Engine model
gear ratio
EUR F4A42-1-U5A1 28/36 4.407 N61W 4G93-GDI
GENERAL SPECIFICATIONS
Items F4A41 F4A42-1 F4A42-2 F4A51
Torque converter type 3-element, 1- 3-element, 1- 3-element, 1- 3-element, 1-
stage, 2 phase stage, 2 phase stage, 2 phase stage, 2 phase
type type type type
Transmission type 4-speed forward, 4-speed forward, 4-speed forward, 4-speed forward,
1-speed reverse 1-speed reverse 1-speed reverse 1-speed reverse
1st 2.842 2.842 2.842 2.842
2nd 1.529 1.529 1.529 1.529
EXP 3rd 1.000 1.000 1.000 1.000
4th 0.712 0.712 0.712 0.712
Reverse 2.480 2.480 2.480 2.480
Number of underdrive clutch disc 3 4 4 4
Number of overdrive clutch disc 3 4 4 4
Number of reverse clutch disc 2 2 2 2
Number of low reverse clutch disc 4 5 6 6
Number of second brake disc 2 3 3 4
Modification A: The 1999 transmission models (F4A42 with one-way clutch for 2.4-liter and 2.5-liter engine
equipped cars) have been added.
EUR F4A42-2-E6B 29/36 3.770 EA3A, EA3W 4G64-GDI
F4A42-2-E6B1 29/36 3.770 EA5A, EA5W 6A13
F4A42-2-M5B1 28/36 4.042 N84W 4G64-GDI
<Added>
3
AUTOMATIC TRANSMISSION (E-W) - Specifications 23A-1-9
TORQUE SPECIFICATIONS
Items Nm
Transmission Roll stopper bracket 70
Wiring harness bracket 23
Control cable bracket 23
Eye bolt 31
Oil cooler feed tube (to transmission case) 10
Oil cooler feed tube (to roll stopper bracket) 11
Oil feeder 12
Input shaft speed sensor 11
Output shaft speed sensor 11
Manual control lever 22
Inhibitor switch 11
Speedometer gear 5
Valve body cover 11
Valve body mounting bolt 11
Fluid temperature sensor 11
Manual control shaft detent 6
Rear cover 23
Torque converter housing 48
Oil pump 23
<Deleted> Transfer drive gear <F4A41>, <F4A42> 19
Transfer drive gear <F4A51> <Deleted> 34
Output shaft lock nut 170
Output shaft bearing retainer <F4A41>, <F4A42> 23
Output shaft bearing retainer <F4A51> 54
Components Transfer drive gear lock nut 195
Differential drive gear 135
Valve body 11
Solenoid valve support 6
Plate 6
4
23A-2-4 AUTOMATIC TRANSMISSION (E-W) – Special Tools
Modification B: On some models equipped with the F4A42 transmission, the service procedures for the low-
reverse brake have been changed due to addition of the one-way clutch.
• The special tool has been added.
Tool Number Name Use
MD998823 Installer adapter (48) Installation of output shaft tape roller
bearing <F4A41, F4A42>, transfer
drive gear <F4A41, F4A42>.
MD998824 Installer adapter (50) Installation of transfer drive gear
<F4A51>, differential taper roller
bearing <F4A51>.
MD998827 Installer adapter (56) Installation of output shaft tape roller
bearing <F4A51>.
MD998829 Installer adapter (60) Installation of transfer drive gear
<F4A41, F4A42>.
MD998907 Spring compressor Removal and installation of
underdrive clutch snap ring.
MD998913 Dial gauge extension Measurement of low-reverse brake
and second brake end plays.
MD998917 Bearing remover Removal of output shaft taper roller
bearing.
MD998924 Spring compressor retainer • Removal and installation of low-
reverse brake snap ring.
• Measurement of underdrive
clutch and overdrive clutch end
plays.
MD999590 Spring compressor Removal and installation of overdrive
clutch snap ring.
MD998903 Spring compressor Removal and installation of
one-way clutch inner race snap
ring <F4A42>.
<Added>
5
23A-3-4 AUTOMATIC TRANSMISSION (E-W) – Transmission
Modification B: On some models equipped with the No. of Brake Discs and Plates
F4A42 transmission, the service procedures for the
Brake Model Brake disc Brake plate
low-reverse brake have been changed due to
Low-reverse F4A41 4 3
addition of the one-way clutch.
F4A42 5 4
Second brake F4A41 2 1
Modification F: On some models equipped with the
F4A42 3 2
F4A42 transmission, the transfer drive gear
tightening torque has been changed from 19 Nm to
34 Nm.
<Added>
One way
clutch inner
O-Ring race
<Incorrect>
<Correct>
34 Nm
Apply automatic
transmission fluid
to all moving parts
before installation.
<Correct>
<Incorrect> TFA1979
Planetary
carrier
assembly
6
AUTOMATIC TRANSMISSION (E-W) – Transmission 23A-3-5d
Modification C: On all the models equipped with the F4A51
transmission, the service procedures for the low-reverse brake
have been corrected due to addition of the one-way clutch.
• The transmission disassembly/reassembly procedures
• have been corrected.
• The overdrive planetary carrier disassembly/reassembly
procedures have been corrected to the planetary carrier
assembly reassembly/disassembly procedures.
<Incorrect>
Apply automatic
transmission fluid
to all moving parts
before installation.
<Correct>
TFA1997
Planetary carrier
assembly
7
AUTOMATIC TRANSMISSION (E-W) – Transmission 23A-3-13
Modification B: On some models equipped with the F4A42 transmission, the service procedures for the low-
reverse brake have been changed due to addition of the one-way clutch.
Modification C: On some models equipped with the F4A51 transmission, the service procedures for the low-
reverse brake have been changed due to addition of the one-way clutch.
(45) Remove the pressure plate, brake discs and brake plate(s).
No. of brake discs and plates
Model Brake disc Brake plate Pressure plate
F4A41 2 1 1
F4A42 3 2 1
F4A51 4 3 1
TFA1402
(46) Remove the overdrive planetary carrier. <Incorrect>
Planetary carrier assembly
<Correct>
TFA1403
(47) Remove the output planetary carrier and the thrust bearing #4.
TFA1404
(48) Remove the underdrive sun gear and the thrust bearing #3 from the
output planetary carrier.
Thrust bearing #3
TFA1405
(49) Remove the snap ring.
<Deleted>
TFA1406
8
AUTOMATIC TRANSMISSION (E-W) – Transmission 23A-3-15
Modification B: On some models equipped with the F4A42 transmission, the service procedures for the low-
reverse brake have been changed due to addition of the one-way clutch.
Modification D: On some models equipped with the F4A42 transmission, the number of the transfer drive
gear mounting bolts has been changed from 4 to 7.
(55) Remove the two parking roller support shaft, and then remove the
parking pawl case and parking roller support.
TFA1422
<Incorrect> <Deleted>
(56) Use the special tool to remove the snap ring.
(57) Remove the one-way clutch inner race <F4A51>, O-ring <F4A51>,
spring retainer, return spring and the low-reverse brake piston.
<Correct>
TFA1423
TFA2242
<Correct>
TFA1983 7
(58) Remove the transfer drive gear mounting bolts (4 pieces – F4A41 •
F4A42, 8 pieces – F4A51). <Incorrect>
NOTE <F4A51><Deleted>
Remove four mounting bolts. Then, turn the gear 1/8 turn (45°) and
remove the remaining four bolts.
<Incorrect> <Incorrect>
Four or three
TFA1424
<Correct>
(59) Remove the transfer drive gear.
TFA1425
9
AUTOMATIC TRANSMISSION (E-W) – Transmission 23A-3-17
Modification B: On some models equipped with the F4A42 transmission, the service procedures for the low-
reverse brake have been changed due to addition of the one-way clutch.
REASSEMBLY
<Correct>
Caution
1. Never reuse the gasket, O-ring, oil seal etc. Always replace with
a new one when reassembling.
2. Never use grease other than blue petrolatum jelly and white
Vaseline.
3. Apply ATF to friction components, rotating parts, and sliding
parts before installation. Immerse a new clutch disc or brake
TFA1422 disc in ATF for at least two hours before assembling them.
4. Never apply sealant or adhesive to gaskets.
5. When replacing a bushing, replace the assembly which it
belongs to.
6. Never use any cloth gloves or any rags during reassembly. Use
TFA2242
nylon cloth or paper towels if you need to use something.
7. Change the oil in the cooler system.
(1) Use the special tool to tap the differential bearing outer race in the
transmission case. <F4A42, F4A51>
Model Special tools No.
F4A42 MB990935, MB990938
or
F4A51 MB990936, MB990938
TFA1506
(2) Use the special tool to tap the differential bearing outer race in the
transmission case.
(3) Install the used spacer and snap ring.
TFA1507
(4) Install the low-reverse brake piston, return spring and one-way
clutch inner race <F4A51>, transfer drive gear <F4A51> , O-ring
<F4A51>, spring retainer.
(5) Use the special tools to install the snap ring.
<Deleted>
<Deleted>
TFA1423
<Incorrect>
10
AUTOMATIC TRANSMISSION (E-W) – Transmission 23A-3-21
Modification B: On some models equipped with the F4A42 transmission, the service procedures for the low-reverse
brake have been changed due to addition of the one-way clutch.
Modification C: On all the models equipped with the F4A51 transmission, the service procedures for the low-reverse
brake have been changed due to addition of the one-way clutch.
Modification D: On some models equipped with the F4A42 transmission, the number of the transfer drive gear
mounting bolts has been changed from 4 to 7.
Modification E: On some models equipped with the F4A51 transmission, the four bolts for mounting the transfer drive
gear have been corrected to the eight bolts.
(22) Use the special tool to install the transfer drive gear.
<Correct>
Seven mounting bolts (F4A42) and
eight mounting bolts (F4A51)
TFA1561
(23) Tighten the four mounting bouts of the transfer drive gear to the
specified torque. <Incorrect>
TFA1424
Parking pawl shaft (24) Install the parking pawl, spacer, and spring. Then install the parking
pawl shaft.
TFA1513
Parking roller support (25) Install the parking roller support, and then the two parking roller
shaft support shafts.
<Deleted>
TFA1514
(26) Install the underdrive sun gear and thrust bearing #3 to the output
planetary carrier.
Caution
Be careful about the installation direction of the thrust bearing.
TFA1543
Thrust bearing #3
11
AUTOMATIC TRANSMISSION (E-W) – Transmission 23A-3-23
Modification B: On some models equipped with the F4A42 transmission, the service procedures for the low-
reverse brake have been changed due to addition of the one-way clutch.
Modification C: On all the models equipped with the F4A51 transmission, the service procedures for the low-
reverse brake have been changed due to addition of the one-way clutch.
(27) Install the output planetary carrier and thrust bearing #4.
Thrust bearing#4 Caution
Be careful about the installation direction of the thrust bearing.
TFA1544
(28) Install the overdrive planetary drive.
<Incorrect>
<Deleted>
Planetary carrier assembly
<Correct>
TFA1403
(29) Install the planetary reverse sun gear.
TFA1399
(30) Install the wave spring.
TFA1410
(31) Install the pressure plate, brake disc, and brake plate.
Number of brake discs and plates
Model Brake disc Brake plate Pressure plate
F4A41 4 3 1
F4A42-1 5 4 1
F4A42-2, F4A51 6 5 1
TFA1536
12
AUTOMATIC TRANSMISSION (E-W) – Overdrive Planetary Carrier 23A-7-1
Modification B: On some models equipped with the F4A42 transmission, the service procedures for the low-
reverse brake have been changed due to addition of the one-way clutch.
Modification C: On all the models equipped with the F4A51 transmission, the service procedures for the low-
reverse brake have been changed due to addition of the one-way clutch.
7. OVERDRIVE PLANETARY CARRIER 23302150014
DISASSEMBLY AND REASSEMBLY
Lubricate all internal
parts with automatic
transmission fluid
during reassembly
TFA1372
Disassembly steps
1. Snap ring
2. Overdrive planetary carrier
3. Overdrive annulus gear
<Replace by the following page>
13
AUTOMATIC TRANSMISSION (E-W) – Planetary carrier assembly
1999 transmission models (F4A42 with one-way clutch for 2.4-liter and 2.5-liter engine equipped cars)
added.
7. PLANETARY CARRIER ASSEMBLY DISASSEMBLY AND REASSEMBLY
Lubricate all internal
parts with automatic
transmission fluid
during reassembly
TFA2042
Disassembly steps 6. Under drive sun gear
1. Stopper plate A
! " 7. Thrust bearing #4
!B" 2. One-way clutch 8. Snap ring
3. Snap ring 9. Over drive planetary carrier
4. Output planetary carrier 10. Over drive annulus gear
!A" 5. Thrust bearing #3
Thrust bearing #4 REASSEMBLY SERVICE POINT
Thrust bearing #3 !A" THRUST BEARING #3 AND THRUST BEARING #4
INSTALLATION
Check the installation direction of thrust bearings number 3 and 4, and
install them as shown.
Caution
Be careful about the installation direction of the thrust bearings
TFA2043
!B" ONE-WAY CLUTCH INSTALLATION
Insert the one-way clutch into the over drive annulus gear so that the
arrow points to the output planetary carrier side.
Installation direction
TFA2044
<Correct>
14
