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Overrun Devices

AL-KO Braking system

The overrun device can be described as the control unit for the automatic overrunning system. Braking the towing vehicle produces a drawbar force on the coupling point. After overcoming the response threshold the drawbar is pushed in, this operates the overrun lever and the brakes via the transmission unit.

Handbrake upward gradient

A braking value of up to 37% of the permissible overall weight via the handbrake. The legal requirement is a braking value of more than 18%. This means hazard free manoeuvring of the handbrake, even when reversing on a slope.

y cable requires that the brake reaches a ce greater than 18% ll weight via the cable. AL-KO provides afety by achieving a alue of up to 28%.

Automatic reverse

AL-KO achieves a minimum residual braking force in reverse of approx. 1%. The maximum legally permitted value is 8% of the permissible overall weight.

Service brake

Ready to brake even in extreme situations: When changing from reverse to forwards on a slope, legislation prescribes a brake value greater than 50% of the overall weight. AL-KO reaches a peak value of up to 65%.

Technology Overrun device action

Drawbar force (shearing forces)

Deflection

Brake rod

clamping force Bowden cable

Wheel brake

Breakaway cable Braking force

Backwards roll stop in the wheel brake AL-KO builds on safety when stationary. The handbrake lever automatically tensions in reverse whilst stationary and thus reduces operating faults, such as the handbrake lever not being fully applied.

Handbrake downward gradient

Legislation prescribes a braking value to be activated via the handbrake that is greater than 18%. AL-KO exceeds this valve and achieves up to 62%.

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