GOBACK
TO PAGE
INDEX
TOYOTA 140L/140E
TROUBLE-SHOOTING .......................................................................................................... 3
IN-VEHICLE REPAIR ............................................................................................................. 8
TRANSAXLE DISASSEMBLY .............................................................................................. 12
COMPONENT DISASSEMBLY, INSPECTION AND ASSEMBLY
OIL PUMP ........................................................................................................................... 26
DIRECT CLUTCH HOUSING .......................................................................................... 29
FORWARD CLUTCH HOUSING ..................................................................................... 32
INTERMEDIATE ONE-WAY CLUTCH AND SUN GEAR ........................................... 35
LOW ONE-WAY CLUTCH ASSEMBLY ......................................................................... 37
LOW/REVERSE PISTON ASSEMBLY ........................................................................... 39
OVERDRIVE UNIT ASSEMBLY 1st Design.................................................................... 41
OVERDRIVE UNIT ASSEMBLY 2nd Design.................................................................. 103
A140E VALVE BODY ASSEMBLY .................................................................................. 55
A140L VALVE BODY ASSEMBLY .................................................................................. 65
TRANSAXLE ASSEMBLY ..................................................................................................... 71
CHECKING ALL ONE-WAY CLUTCHES .......................................................................... 86
A140E SOLENOID FIRING ORDER AND CHECK BALL LOCATIONS ...................... 87
COMPONENT APPLICATION CHART .............................................................................. 91
AIR CHECK INFORMATION ............................................................................................... 92
ELECTRICAL CHECKS, WIRING SCHEMATICS AND CODE INFORMATION ...... 94
AUTOMATIC TRANSMISSION SERVICE GROUP
18639 SW 107TH AVENUE
MIAMI, FLORIDA 33157
(305) 670-4161
Copyright © ATSG 1999
INTRODUCTION Updated
November, 2003
TOYOTA A140/A140E
The Toyota A140/A140E is a fully automatic, electronically controlled transaxle that features a combination of
electronic and mechanical systems to control the upshift and downshift of all forward gears and the apply and
release of the torque converter clutch.
This manual provides the procedures necessary to diagnose, service, repair and overhaul this unit.
We wish to thank Toyota Motor Company
for the information and illustrations
that have made this booklet possible.
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 have
been carefully compiled from industry sources known for their
reliability, but ATSG does not guarantee its accuracy.
Copyright © ATSG 1993
DALE ENGLAND JIM DIAL
FIELD SERVICE CONSULTANT TECHNICAL CONSULTANT
WAYNE COLONNA ED KRUSE
TECHNICAL SUPERVISOR TECHNICAL CONSULTANT
PETER LUBAN GREGORY LIPNICK
TECHNICAL CONSULTANT TECHNICAL CONSULTANT
JON GLATSTEIN DAVID CHALKER
TECHNICAL CONSULTANT TECHNICAL CONSULTANT
ROLAND ALVAREZ JERRY GOTT
TECHNICAL CONSULTANT TECHNICAL CONSULTANT
GERALD CAMPBELL MIKE SOUZA
TECHNICAL CONSULTANT TECHNICAL CONSULTANT
AUTOMATIC TRANSMISSION SERVICE GROUP
18639 SW 107TH AVENUE
MIAMI, FLORIDA 33157
(305) 670-4161
1
NOTES----NOTES----NOTES----NOTES
NOTES----NOTES----NOTES----NOTES
Technical Service Information
A140L "LOWER" VALVE BODY
(9) (10)
(1)
(8)
(2)
(7)
(3)
(6)
(4)
(5)
Spring Specifications
Spring Free Length mm (in.) Color
(1) Primary Regulator Valve 66.65 (2.624") None
(2) 1-2 Shift Valve 27.17 (1.069") Yellow
(3) Detent Regulator Valve 29.05 (1.143") Orange
(4) 2-3 Shift Valve 27.74 (1.092") Pink
(5) 3rd Coast Shift Valve 24.40 (0.960") Violet
(6) Lock-Up Signal Valve 35.30 (1.390") Lt Blue
(7) OD Sequence Valve 30.90 (1.216") None
(8) Secondary Regulator Valve 43.60 (1.716") None
(9) Damping Check Valve 11.20 (0.440") None
(10) Cooler By-pass Valve 19.90 (0.783") None
AUTOMATIC TRANSMISSION SERVICE GROUP
67
Technical Service Information
A140L "LOWER" VALVE BODY
DAMPING CHECK
CHECK BALL LOCATION
VALVE
DIRECT CLUTCH
ORIFICE BALL
5.5mm (.217") RUBBER INTERMEDIATE CLUTCH
ORIFICE BALL
5.5mm (.217") RUBBER
OIL COOLER
BY PASS VALVE
SECOND BAND OVERRUN CLUTCH
ORIFICE BALL ORIFICE BALL
5.5mm (.217") RUBBER 5.5mm (.217") RUBBER
A140L "UPPER" VALVE BODY
CHECK BALL LOCATION
OVERDRIVE CLUTCH
ORIFICE BALL
5.5mm (.217") RUBBER
FORWARD CLUTCH
ORIFICE BALL
5.5mm (.217") RUBBER
AUTOMATIC TRANSMISSION SERVICE GROUP
68
Technical Service Information
THE SHAFT MUST FREEWHEEL CLOCKWISE AND LOCK COUNTER
CLOCKWISE WHEN THE OVERDRIVE DIRECT DRUM IS HELD
HOLD
OVERDRIVE
DIRECT DRUM
FREEWHEEL
FREEWHEEL
OUTPUT SHAFT
THE PLANETARY MUST FREEWHEEL COUNTER CLOCKWISE
AND LOCK CLOCKWISE WHEN THE OUTER RACE IS HELD
FREEWHEEL DULL
PLANETARY SURFACE
FREEWHEEL
HOLD
SHINY SURFACE OUTER RACE
FACES BELLHOUSING
THE CLUTCH HUB MUST FREEWHEEL CLOCKWISE AND LOCK
COUNTER CLOCKWISE WHEN THE SUN SHELL IS HELD
FREEWHEEL
CLUTCH HUB
FR EEW H EEL
HOLD
SUN SHELL
AUTOMATIC TRANSMISSION SERVICE GROUP
86
Technical Service Information
Wire Color White Black Yellow
No. 1 Gear No. 1 No. 2 Lock-Up
Solenoid Range Solenoid Solenoid Solenoid
(White Wire) 1st Gear On Off Off
2nd Gear On On Off
3rd Gear Off On Off
4th Gear Off Off *On
Reverse On Off Off
No. 2 * = Determined by TCM
Solenoid
(Black Wire) All Solenoids 11-15 Ohms resistance @ 72°F
Note: Count the number of "E" clips before disassembly of the
valve body, as the throttle pressure is changed according to the
number of "E" clips on the throttle valve. Some valve bodies do
not have any "E" clips.
(Increasing number of "E" clips decreases throttle pressure)
A140E "LOWER" VALVE BODY
CHECKBALL AND VALVE LOCATIONS
PRESSURE RELIEF DIRECT CLUTCH
CHECK VALVE INTERMEDIATE CLUTCH
FEED ORIFICE BALL FEED ORIFICE BALL
5.5mm (.217") RUBBER 5.5mm (.217") RUBBER
OVERDRIVE CLUTCH
FEED ORIFICE BALL
5.5mm (.217") RUBBER
COOLER BYPASS
CHECK VALVE
OVERRUN CLUTCH
OIL FEED ORIFICE BALL
SCREEN 5.5mm (.217") RUBBER
AUTOMATIC TRANSMISSION SERVICE GROUP
87
Technical Service Information
A140E VALVE BODY
A140E "UPPER" VALVE BODY
CHECKBALL LOCATIONS
INTERMEDIATE BAND
FEED ORIFICE BALL
5.5mm (.217") STEEL
FORWARD CLUTCH
FEED ORIFICE BALL
5.5mm (.217") STEEL
AUTOMATIC TRANSMISSION SERVICE GROUP
88
Technical Service Information
COMPONENT APPLICATION CHART
* Downshift from higher gear only, No upshift in this range.
AUTOMATIC TRANSMISSION SERVICE GROUP
91
Technical Service Information
Overdrive Unit
103
BACK
BACK
Technical Service Information
TOYOTA A140
NO REVERSE AFTER OVERHAUL
COMPLAINT: No reverse all forward ranges good. (Overdrive planetary assembly changed during rebuild).
CAUSE: One cause may be a late planetary assembly installed in an early transaxle. The over-run
clutches can no longer hold the planetary assembly as the hub for the clutches are in different
location.
CORRECTION: Install the correct planetary assembly.
Figure 1
Copyright © 2000 ATSG
91-55
AUTOMATIC TRANSMISSION SERVICE GROUP Page 1 of 1
