SERIES 60 ON-HIGHWAY ENGINE OPERATOR'S GUIDE you press the clutch pedal while shifting gears. LOSS OF VEHICLE CONTROL NOTICE: To avoid injury from loss of vehicle control, do not activate the Engine Brake system under the following conditions: Do not attempt to “double clutch” the transmission while the engine brake system is turned on. Shifting gears without pressing the clutch or using the engine brake to reduce engine rpm may result in serious powertrain damage. On wet or slippery pavement, unless the vehicle is equipped with ABS (anti-lock braking system) and you have had prior experience driving under these conditions. NOTE:
Some systems may be programmed to activate themselves only when the brake pedal is pressed, so read your vehicle owner's manual thoroughly to find out if you have this option. When driving without a trailer (bobtailing) or pulling an empty trailer. If the tractor drive wheels begin to lock or there is fishtail motion after the Engine Brake is activated, deactivate the brake system immediately if this occurs. Under normal driving conditions the engine brake system is left in the ON position. However, this should change if roads become wet or slippery.
After it is switched on, the engine brake system is automatically activated each time you remove your feet completely from the clutch pedal and throttle. The engine brake automatically deactivates itself when All information subject to change without notice. 41 DDC-SVC-MAN-0039 Copyright © 2009 DETROIT DIESEL CORPORATION