On The Road With The Mack Powerleash™ Engine Brake; Over Flat Terrain - Mack Granite GU Series Operator's Handbook Manual

154 OPERATION
ON THE ROAD WITH THE MACK POWERLEASH™
ENGINE BRAKE
If you are not familiar with the use and operation of a heavy-duty diesel
engine brake, it is essential that you read the following section carefully. It is
very important that you take the time to gain experience with your MACK
PowerLeash™ Engine Brake in good driving conditions, before using it in
difficult or hazardous driving conditions, such as steep descents or slippery
roads. Of course, there is no substitute for driver training by a qualified
specialist.
The following information is intended as a guideline to safe and appropriate
use of the MACK PowerLeash™ Engine Brake. It is difficult to describe
every possible driving condition. Certain circumstances may require a more
conservative approach than will be described. When encountering any new
driving route or situation, err on the side of caution.

Over Flat Terrain

The LOW power position is likely adequate to control vehicle speed in
situations where the roadway is relatively flat or has modestly graded rolling
hills, and if total vehicle weight is light.
1. High
2. Low
3. Off
C0029331