Measuring the minimum braking ratio and braking distance (In accordance with DIN norm 0015161 and FEM) Before checking the brakes:
In accordance with DIN 0015161 and FEM, when checking the brakes the minimum braking ratio must be recorded using a decelerometer (motometer, dynometer or similar). The maximum permissible braking distances are listed here as comparative values.
For trucks with a traction controller, regenerative braking must be deactivated! • • • • •
Test requirements Braking must take place on a level, dry, horizontal concrete track or similar. If the truck has an operator platform, it must be occupied by the driver when recording the braking. All industrial trucks are recorded laden with the max. permissible load. Tow trucks are recorded without attachments and without load. The load lifting device must be in the transportation position, i.e. it must be freely raised in the home position as low as possible. The mast is tilted back and retracted. Braking is recorded with the truck traveling forward and in reverse, facing straight ahead. Tow trucks are only recorded in the tow direction. The brakes are applied suddenly. The wheels should not slide or block during braking, and the truck should remain within the track.
Set “Coasting Brake” setting to “0”. Set “Max. Forward + Reverse” setting to “9”. Set “Reduction Brake” setting to “0”. EP series 1, 2 and 3: Remove the brake switch cable. EP series 4 and 5: bypass brake pedal switch contact (7S11).
Braking distance recording • Read the travel speed (laden) from the truck data plate or travel at max. speed for 5m along the measurement route and record the time taken. Calculation formula: Time taken in seconds (t) over km/h (v): v = 18 / t [km/h] • Accelerate the truck to maximum speed and from a fixed marker brake until the truck comes to a halt. • Record the braking distance and compare this with the max. permissible braking distance for your particular truck model.
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