INTRODUCTION
Page 7
ABOUT THE E-TECH™ ENGINE
AND ITS SERVICE
This publication is intended to provide technicians
with a working knowledge of the E-Tech™
engine, including both early-production and
current-production versions.
The E-Tech™ engine has undergone a left-side
redesign. Changes include a new plate-type oil
cooler and a new oil filter mounting arrangement.
This new oil filter arrangement includes a new
centrifugal oil filter assembly, where the
centrifugal filter assembly is now mounted upside
down, and the external oil drain is eliminated.
This new centrifugal oil filter is called Centri-Max
®
PLUS.
The engine electronic control unit (EECU) has
been relocated to the left side of the engine and
is mounted on a new one-piece inlet manifold.
Relocating the EECU has eliminated the need for
the EECU cooling plate, and has also brought
about a design change to the unit pump front
outboard heat shield. Additionally, with the
change to the one-piece inlet manifold, the fuel
filter mounting adapter is new and is located
slightly forward of the previous location.
Descriptions of these design changes and the
other features are provided in the DESCRIPTION
& OPERATION section. Additionally, the service
effects of these changes on removal, installation,
disassembly, assembly, setup and adjustment
procedures, etc., are included in the respective
sections of this publication.
Development of the E-Tech™ engine has been
driven by three basic requirements. It was
designed to:
r
Meet projected exhaust and noise emissions
regulations.
r
Meet customer demands for improved fuel
economy, driveability and engine braking.
r
Compete in a world market.
Although the drive to reduce emissions and noise
levels is primarily the result of government
mandates, the E-Tech™ engine is designed to
provide customers with an improved engine over
the existing E7 engine it replaces. Specific
improvements include:
r
Improved fuel economy.
r
Increased throttle response (time to
90 percent torque is faster with the
E-Tech™).
r
More retarding horsepower through a newly
designed J-Tech™ Engine Brake from
Jacobs.
Mack Trucks, Inc. is looking beyond the borders
of North America to increase its market and bring
the quality, toughness and technology associated
with the MACK name to a worldwide audience.
The current environment of global regulations
concerning exhaust emissions, noise and other
factors has leveled the playing field on an
international basis. This means that the
improvements made to meet the North American
environmental regulations can now be applied
worldwide.
The E-Tech™ engine is used in MACK trucks and
European Renault VI trucks.
5_106_00.bk Page 7 Friday, August 4, 2000 11:17 AM
BDC for engine manuals and specs
