PART 4: CONTROLS AND DISPLAYS
PB1319 (CAT. NO. 5296 ) —28— 22-01691 (R02/02)
Engine Brake
When an engine brake is energized, the power-producing diesel
engine is converted into a power-absorbing air compressor to retard
the vehicle.
• The brake is energized whenever the driver’s foot is completely
removed from the accelerator pedal.
• The brake is deenergized during driving by pressure on the accel-
erator pedal, and during shifting by depressing the clutch pedal.
The ON/OFF toggle switch turns the system ON or OFF.
• In Caterpillar and Cummins L10-powered vehicles equipped with a
Jacobs Engine Brake, a second, two-mode switch is incorporated
in the instrument panel. With this system, you can select either
LOW or HIGH retarding.
For more information on when and how to use the engine brake in
your vehicle, see the owner’s manual for the engine brake that is
included with your vehicle.
WARNING! Using the engine brake when operating on
surfaces with poor traction (such as wet or icy, slippery
roads or gravel) could cause loss of control.
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