H476-USER MANUAL-FULL BOOK-ENGLISH

OPERATION

Braking

Bremsomat: When the retarder lever is pulled 1 step while driving downhill, retarder is activated in the required amount so that the vehicle speed hold constant. Bremsomat feature turns off when the lever is brought to 0 or any position from 2 to 5. CAUTION Retarder braking force has a technical limit. In Bremsomat position, force acting downhill due to the road inclination and load status may exceed maximum braking force of the retarder. In this case, vehicle shall be accelerated. CAUTION Do not use pressurized water to clean the retarder unit. Pressurized water may cause harm to the valves, sensors and breathers.

WARNING Retarder oil is cooled with the engine coolant. Check whether the coolant is heated excessively from the coolant temperature indicator especially when the retarder is used in long intervals.

4

When the coolant has reached 105 °C, retarder is deactivated automatically to prevent excessive heating of the engine.

CAUTION Retarder requires maintenance. The oil filter should always be changed at every replacement interval of the transmission oil.

CAUTION Using retarder for any type of deceleration will extend service life of the brake linings.

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