How Do You Use A Semi Truck Jake Brake?
The Jacobs Engine Brake (sometimes known as a Jake Brake) is used mainly in large vehicles with diesel engines. The Jake Brake uses the high compression of the diesel engine to slow the vehicle without using the service brakes. The repeated use of the regular service brakes in large vehicles will cause the brakes to overheat and possibly fail. Although not a substitute for regular service brakes, the Jake Brake can help keep your vehicle under control and lower service brake maintenance costs. Familiarize yourself with the dashboard controls. Locate the Jake Brake ON/OFF switch and the LOW/HIGH or LOW/MEDIUM/HIGH switch. Allow the engine oil to reach full operating temperature. Switch the Jake Brake to the ON position and use LOW range. Lift off the throttle to automatically slow the vehicle. Switch the range to MED or HIGH if in dry, level conditions you are still using your service brake. Switch the range to HIGH in dry conditions when descending a grade for maximum braking. Shift to