ENGINE BRAKE SYSTEM ENGINE BRAKE SYSTEM Certain Series 60 vehicle engines are equipped with engine brakes, commonly referred to as retarders . Before operating the vehicle, you must familiarize yourself with the retarder system to obtain optimum benefit from it. Engine brake control systems may vary slightly, depending on the engine brake configuration and cab design. However, basic operator controls are similar for all models. about two-thirds engine braking horsepower. The setting activates all six (6) cylinders, providing full braking horsepower.
Clutch Pedal and Throttle Position Controls Engine brakes have two additional controls, one activated by the position of the clutch pedal and the other activated by the position of the throttle. These controls permit fully automatic operation of the engine braking system. Driver Control Switches Vehicles with manual transmissions allow the driver to turn the engine brake on and off and select a low, medium or high level of braking. Two types of switches are available. Engine Brake Operation The engine brake retarder system depends on a full-pressure flow of warm engine lubricating oil for proper lubrication of moving parts and optimum performance. .
Low/High Switch The setting on this switch activates three (3) brake cylinders, supplying approximately 50% of normal engine braking horsepower. The “High” setting activates all six (6) cylinders, providing full engine braking horsepower. NOTICE: To ensure positive engine brake engagement when required, always allow the engine to reach full normal operating temperature before activating the engine brake system. Low/Med/High Switch The setting on this switch activates two (2) brake cylinders, yielding about one-third engine braking horsepower. The “Medium” activates four (4) cylinders, supplying 40 All information subject to change without notice.
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