• Author / Uploaded
• oliver leal

Citation preview

FORD 4R44E/4R55E

INDEX GENERAL DESCRIPTION.................................................. ...............................................................................

3

VEHICLE APPLICATION...................................................................................................................................

6

BEARINGS, BUSHINGS AND THRUST WASHERS .......................................................................................... 7 ELECTRONICS AND SENSORS .........................................................................................................................

11

DIAGNOSIS AND TESTING.................................................................................................................................. 19 TEAR-DOWN.............................................................. ............................................................................................ 31 VALVE BODY....................................................................... .................................................................................... 53 PUMP ...................................................................... .................................................................................................. 61 CLUTCH DRUMS........................................................... ........................................................................................ 65 PLANETARY ASSEMBLY............................................................ ......................................................................... 80 TORQUE CONVERTER CHECKS........................................................................................................................ 86 TRANSMISSION RE-ASSEMBLY......................................................................................................................... 87

AUTOMATIC TRANSMISSION SERVICE GROUP 18639 S.W. 107TH AVENUE MIAMI, FLORIDA 33157 (305) 670-4161 Copyright © ATSG 2006

Reprinted March, 2003

INTRODUCTION FORD 4R44E/4R55E The Ford 4R44E/4R55E is a fully electronic controlled, four speed, rear wheel drive transmission. At first glance it resembles the familiar A4LD transmission. The shift timing, shift feel, line pressure and TCC are all computer controlled in the 4R44E/4R55E transmissions. There are three compound planetary gearsets, three bands, three multi-disc clutch packs and two one-way freewheel assemblies. This manual covers the procedures necessary for inspection, teardown and assembly to properly diagnos, repair and overhaul this transmission, along with the basic Diagnostic Trouble Codes. The ATSG PASS books cover the diagnosing of the electronic controls.

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.

We wish to thank Ford Motor Company for the information and illustrations that have made this booklet possible. 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

JERRY GOTT

MIKE SOUZA

TECHNICAL CONSULTANT

TECHNICAL CONSULTANT

GERALD CAMPBELL

ROLAND ALVAREZ

TECHNICAL CONSULTANT

TECHNICAL CONSULTANT

AUTOMATIC TRANSMISSION SERVICE GROUP 18639 S.W. 107TH AVENUE MIAMI, FLORIDA 33157 (305) 670-4161 1

BACK