V5A51 Application Chart
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INTRODUCTIONR/V4A51 AND V5A51
AUTOMATIC TRANSMISSION SERVICE GROUP18635 S.W. 107 AVENUEMIAMI, FLORIDA 33157
(305) 670-4161 1
No part of any ATSG publication may be reproduced, stored in any retrieval system or transmitted in any form or by any means, including but not limited to electronic, mechanical, photocopying, recording or otherwise,without written permission of Automatic Transmission Service Group. This includes all text illustrations,tables and charts.
The information and part numbers contained in this booklet havebeen carefully compiled from industry sources known for their
reliability, but ATSG does not guarantee its accuracy.
Copyright © ATSG 2008
1st Printing November, 2008
DALE ENGLANDFIELD SERVICE CONSULTANT
ED KRUSETECHNICAL CONSULTANT
WAYNE COLONNAPRESIDENT
PETER LUBANTECHNICAL CONSULTANT
JIM DIALTECHNICAL CONSULTANT
GREGORY LIPNICK TECHNICAL CONSULTANT
RICHARD GRAHAMTECHNICAL CONSULTANT
JON GLATSTEINTECHNICAL CONSULTANT
DAVID CHALKER TECHNICAL CONSULTANT
ROLAND ALVAREZTECHNICAL CONSULTANT
GREG CATANZAROTECHNICAL CONSULTANT
GERALD CAMPBELLTECHNICAL CONSULTANT
This is a four speed, Rear Wheel Drive transmission, with fully electronic controls for the upshifts anddownshifts, with 4th gear being overdrive. The individual gear ratios are achieved through two planetary gearsets connected one behind the other. The components of the planetary gear sets are driven or held by means offive multiple plate clutch packs, and a low sprag. To minimize fuel consumption, the torque converter clutch is applied by the PCM, depending on throttle
position and vehicle speed. These units are currently found in Mitsubishi Montero 1999-2002 models,equipped with 3.0L and 3.5L engines.
This is a five speed, Rear Wheel Drive transmission, with fully electronic controls for the upshifts anddownshifts, with 5th gear being overdrive. The individual gear ratios are achieved through 3 planetary gear setsconnected one behind the other. The components of the planetary gear sets are driven or held by means of sixmultiple plate clutch packs, 1 band, and two sprags. To minimize fuel consumption, the torque converter clutch is applied by the PCM, depending on throttle
position and vehicle speed. These units are currently found in Mitsubishi Montero 2001-Up models, equippedwith 3.5L and 3.8L engines.
We wish to thank Mitsubishi Motor Company for the information and illustrationsthat have made this booklet possible. A special thanks also to Bob Nuttall for
information and suggestions that has made this a very accurate booklet.
R/V4A51 R=2WD, V=4WD
V5A51 V=4WD
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INDEX
Copyright © ATSG 2008
MITSUBISHI MONTEROR/V4 A51 AND V5A51
(4 Sp eed ) (5 Sp eed )
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AUTOMATIC TRANSMISSION SERVICE GROUP18635 S.W. 107 AVENUEMIAMI, FLORIDA 33157
(305) 670-4161
QUICK EXTERNAL IDENTIFICATION ....................................................................................................................... IDENTIFICATION CODE STAMPING LOCATION ....................................................................................................4 SPEED COMPONENT APPLICATION CHART ........................................................................................................5 SPEED COMPONENT APPLICATION CHART ........................................................................................................
ELECTRONIC COMPONENT DESCRIPTION ............................................................................................................. SOLENOID CONNECTOR IDENTIFICATION AND RESISTANCE CHART ...........................................................4 SPEED WIRE SCHEMATIC ........................................................................................................................................4 SPEED CONNECTOR IDENTIFICATION .................................................................................................................5 SPEED WIRE SCHEMATIC ........................................................................................................................................5 SPEED CONNECTOR IDENTIFICATION .................................................................................................................
DIAGNOSTIC TROUBLE CODE DESCRIPTION ........................................................................................................ AIR CHECKS ....................................................................................................................................................................
LINE PRESSURE TEST SPECS, PRESSURE TAP LOCATIONS, FLUID SPECIFICATION .................................TRANSMISSION DISASSEMBLY ..................................................................................................................................COMPONENT REBUILD SECTION TRANSMISSION CASE ASSEMBLY ..................................................................................................................... EXTENSION HOUSING OR 4WD ADAPTER HOUSING ................................................................................... 2WD SPEEDOMETER GEAR ASSEMBLY .......................................................................................................... OIL PUMP ASSEMBLY ........................................................................................................................................... OVERDRIVE AND REVERSE CLUTCH HOUSING ASSEMBLY ...................................................................... PLANETARY GEAR TRAIN AND LOW SPRAG ASSEMBLY ............................................................................. REVERSE SUN GEAR AND HUB ASSEMBLY .................................................................................................... CENTER SUPPORT ASSEMBLY ........................................................................................................................... REDUCTION ANNULUS AND UNDERDRIVE CLUTCH HOUSING ASSEMBLY .......................................... 2ND BRAKE CLUTCH PISTON AND RETAINER ASSEMBLY ......................................................................... REDUCTION SERVO ASSEMBLY .........................................................................................................................
DIRECT CLUTCH HOUSING ASSEMBLY ........................................................................................................... 4 SPEED OUTPUT SHAFT SUPPORT .................................................................................................................. 5 SPEED OUTPUT SHAFT SUPPORT AND DIRECT SPRAG ASSEMBLY ..................................................... DIRECT SPRAG FREEWHEEL DIRECTION ...................................................................................................... LOW SPRAG FREEWHEEL DIRECTION ............................................................................................................ REDUCTION CARRIER AND OUTPUT SHAFT ASSEMBLY ............................................................................ VALVE BODY ASSEMBLY ...................................................................................................................................... CHECK BALL LOCATIONS ....................................................................................................................................TRANSMISSION ASSEMBLY (4 SPEED) .....................................................................................................................TRANSMISSION ASSEMBLY (5 SPEED) .....................................................................................................................
REDUCTION BAND ADJUSTMENT .............................................................................................................................TORQUE SPECIFICATIONS ..........................................................................................................................................THRUST BEARING IDENTIFICATION .......................................................................................................................
SPECIAL SERVICE TOOLS ...........................................................................................................................................
3456 7 8
141516 17 1920
2124
45484951556266 66 707576
788182848586 889197
100112124125126
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Selector Lever Position/Gear
Under Drive
Clutch
Over Drive
Clutch
Low/Rev BrakeClutch
2nd BrakeClutch
Low Sprag
Direct Sprag
Reduct.BrakeBand
Direct Clutch
Gear Ratio
Park
Reverse
Neutral
"D" 1st
"D" 2nd
"D" 3rd
"D" 4th
"D" 5th
"3" 1st
"3" 2nd
"3" 3rd
"2" 1st
"2" 2nd
"L" 1st
ON ON
ReverseClutch
ON ON ON
ON ON
ON ON* ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
HOLD HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
3.865
3.789
3.789
3.789
3.789
2.057
2.057
2.057
1.000
1.421
1.421
.731
ON ON
ON ON
ON
ON
ON
ON ON
ON ON HOLD
ON ON
ON ON
ON ON HOLD
ON ON
ON ON HOLD
Figure 4
V5A51 COMPONENT APPLICATION CHART
OUTPUT SPEED
SENSOR
UNDERDRIVE CLUTCH
LOW SPRAG
LOW/REVERSE CLUTCH
REVERSE CLUTCH
2-4 BRAKE CLUTCH
OVERDRIVE CLUTCH
DIRECT CLUTCH
REDUCTION
BRAKE BAND
INPUT SPEED
SENSOR
DIRECT SPRAG
* Operates only when stopped in "D" 1st gear (Approximately 10 KMH {6.2 MPH} or less).
The 5 speed units from late 2001 thru current, are equipped with a "Sport Tronic" feature. This is a selector lever with twooperation gates, a Main gate and a Manual gate as shown on page 10. All manual positions below the "D" position must beachieved in the Manual gate with Plus or Minus indicators.
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Copyright © 2008 ATSG
AUTOMATIC TRANSMISSION SERVICE GROUP
Technical Service Information
V5A51 COMPONENT APPLICATION CHART
TORQUE CONVERTER
CLUTCH
