Navistar ProStar+, Руководство по эксплуатации и обслуживанию, Страница: 163 / 304

Operation
To activate the engine brake, press the push button
ENG BRAKE ON / OFF switch on the steering wheel
(pressing this switch again will deactivate the system).
The ENGINE BRAKE SELECTOR 1/2/3 switch is then
used to adjust the amount of braking applied.
Using engine braking features can extend brake lining
life. The features also allow the driver to slow the vehicle down
or maintain a constant speed on steep road grades that would
otherwise result in prolonged use of the service brake, which
could cause brake fade. Refer to the Engine Operation and
Maintenance Manual for detailed information on the engine
braking system.
Engine Brake With Allison Transmissions
When the Transmission Control Module (TCM) detects the
engine brake has been enabled, it commands use of a
preselected shift schedule in order to enhance the engine brake
performance.
Engine Brake With Eaton ® AutoShift ® / UltraShift ® Transmissions
Special Driver Instructions
Low or manual transmission mode can be used to maximize
engine brake performance.
• Keep engine speed as close to 2250 RPM as possible.
• Maintain brake pedal application until any desired
downshifts are completed. Failure to do so may cause
missed shifts.
• The gear display on the shift selector will stop blinking
when the downshift is completed, and the driver will notice
resumption of engine braking as an indication that the
shift is completed.
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