ATSG 722.6 Service Manual page 2

The Mercedes 722.6 transmission made its first debut here in the United States in 1996. It is used behind 4, 6, 8
and 12 cylinder gasoline engines, as well as their diesel engines. It is their first completely computer controlled
transmission and their first to have a transmission with a converter clutch. This electronically controlled 5 speed
automatic transmission consists of 3 compound planetary gear sets, 3 multiple disc driving clutches, 3 multiple
disc brake clutches and 2 free-wheel clutches, with 5th gear being overdrive. The Electronic Transmission
Controller (ETC) controls transmission operation matching engine performance during the shift phase. The
driver can choose between 2 driving programs, "S" for standard driving programs and "W" for winter driving
programs. Winter option provides a second gear start and a higher gear ratio for a reverse movement. Standard
mode provides a first gear take off and a lower reverse gear ratio.
Note: An "Update Handbook" with the familiar Green cover, is also available from ATSG and includes much
more information on the valve body variations that are found in the 722.6 transmission.
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.
for supplying the transmission that made this manual possible.
The information and part numbers contained in this booklet have
been carefully compiled from industry sources known for their
WAYNE COLONNA
PRESIDENT
GABE DE LOS REYES
TECHNICAL CONSULTANT
PETER LUBAN
TECHNICAL CONSULTANT
JON GLATSTEIN
TECHNICAL CONSULTANT
RICHARD GRAHAM
TECHNICAL CONSULTANT
GERALD CAMPBELL
TECHNICAL CONSULTANT
INTRODUCTION
MERCEDES, JAGUAR,
DAIMLER/CHRYSLER
"722.6" "5 Speed"
We wish to send out a hearty "Thank You" to
Rich Varhan at European Transmission Exchange
reliability, but ATSG does not guarantee its accuracy.
Copyright © ATSG 2009
DALE ENGLAND
FIELD SERVICE CONSULTANT
AUTOMATIC TRANSMISSION SERVICE GROUP
18639 S.W. 107 AVENUE
CUTLER BAY, FLORIDA 33157
(305) 670-4161
1st Printing
October, 2009
JIM DIAL
TECHNICAL CONSULTANT
ED KRUSE
TECHNICAL CONSULTANT
GREGORY LIPNICK
TECHNICAL CONSULTANT
DAVID CHALKER
TECHNICAL CONSULTANT
ROLAND ALVAREZ
TECHNICAL CONSULTANT
GREG CATANZARO
TECHNICAL CONSULTANT