TOYOTA 140L/140E

INDEX
TOYOTA 140L/140E
TROUBLE-SHOOTING ..........................................................................................................
3
IN-VEHICLE REPAIR .............................................................................................................
8
TRANSAXLE DISASSEMBLY ..............................................................................................
12
COMPONENT DISASSEMBLY, INSPECTION AND ASSEMBLY
OIL PUMP ...........................................................................................................................
DIRECT CLUTCH HOUSING ..........................................................................................
FORWARD CLUTCH HOUSING .....................................................................................
INTERMEDIATE ONE-WAY CLUTCH AND SUN GEAR ...........................................
LOW ONE-WAY CLUTCH ASSEMBLY .........................................................................
LOW/REVERSE PISTON ASSEMBLY ...........................................................................
OVERDRIVE UNIT ASSEMBLY 1st Design....................................................................
OVERDRIVE UNIT ASSEMBLY 2nd Design..................................................................
A140E VALVE BODY ASSEMBLY ..................................................................................
A140L VALVE BODY ASSEMBLY ..................................................................................
26
29
32
35
37
39
41
103
55
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
TOYOTA A140/A140E
Updated
November, 2003
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
(2) 1-2 Shift Valve
66.65 (2.624")
27.17 (1.069")
None
Yellow
(3) Detent Regulator Valve
(4) 2-3 Shift Valve
29.05 (1.143")
27.74 (1.092")
Orange
Pink
(5) 3rd Coast Shift Valve
(6) Lock-Up Signal Valve
24.40 (0.960")
35.30 (1.390")
Violet
Lt Blue
(7) OD Sequence Valve
(8) Secondary Regulator Valve
30.90 (1.216")
43.60 (1.716")
None
None
11.20 (0.440")
19.90 (0.783")
None
None
(9) Damping Check Valve
(10) Cooler By-pass Valve
AUTOMATIC TRANSMISSION SERVICE GROUP
67
Technical Service Information
A140L "LOWER" VALVE BODY
CHECK BALL LOCATION
DAMPING CHECK
VALVE
DIRECT CLUTCH
ORIFICE BALL
5.5mm (.217") RUBBER
INTERMEDIATE CLUTCH
ORIFICE BALL
5.5mm (.217") RUBBER
OIL COOLER
BY PASS VALVE
SECOND BAND
ORIFICE BALL
5.5mm (.217") RUBBER
OVERRUN CLUTCH
ORIFICE BALL
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
FREEWHEEL
HOLD
OVERDRIVE
DIRECT DRUM
FREEWHEEL
OUTPUT SHAFT
THE PLANETARY MUST FREEWHEEL COUNTER CLOCKWISE
AND LOCK CLOCKWISE WHEN THE OUTER RACE IS HELD
FREEWHEEL
PLANETARY
DULL
SURFACE
FREEWHEEL
HOLD
OUTER RACE
SHINY SURFACE
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
No. 1
Solenoid
(White Wire)
No. 2
Solenoid
(Black Wire)
Wire Color
White
Black
Yellow
Gear
Range
No. 1
Solenoid
No. 2
Solenoid
Lock-Up
Solenoid
1st Gear
On
Off
Off
2nd Gear
On
On
Off
3rd Gear
Off
On
Off
4th Gear
Off
Off
*On
Reverse
On
Off
Off
* = Determined by TCM
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
CHECK VALVE
DIRECT CLUTCH
FEED ORIFICE BALL
5.5mm (.217") RUBBER
INTERMEDIATE CLUTCH
FEED ORIFICE BALL
5.5mm (.217") RUBBER
OVERDRIVE CLUTCH
FEED ORIFICE BALL
5.5mm (.217") RUBBER
COOLER BYPASS
CHECK VALVE
OVERRUN CLUTCH
FEED ORIFICE BALL
5.5mm (.217") RUBBER
OIL
SCREEN
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