Engine Brake Operation
4900 dm 10.04.001
Depending on the brake type, the engine brake may be disabled when engine temperature falls below a set level.
Notice: Do not allow the engine to exceed its governed speed, or serious engine damage could result.
- Remove your feet from both the clutch and accelerator pedals.
- Press the upper half of the on/off switch to turn the engine brake on. The engine brake will engage at the rate last set on the engine brake intensity switch.
- Press the upper or lower half of the intensity switch to
select the desired braking intensity.Use the intensity switch set at the LOW position when driving on flat, open stretches of road. If the service brakes are still required to slow down on a grade, switch to a higher setting on the dash switch to maintain constant speed of descent. Grade descent speed should be such that the service brakes are used infrequently and remain cool, thus retaining their effectiveness.
- For maximum retarding, maintain the top governed speed of the engine through the appropriate selection of gears. When shifting gears, the engine brake will disengage when the clutch pedal is depressed, then engage when the clutch pedal is released.
- To cancel the engine brake application, press the lower half of the on/off switch.
Note: