AL-KO overrun coupling 90 S/3, 700-1000 kg, square 60 mm, nose weight 75 kg, AK 161, Soft-Dock, gas spring, for RB 1637/2051
AL-KO 90 S/3 overrun coupling in the square-tube version for braked trailers, matched to the AL-KO 1637 and 2051 wheel brakes. When the trailer runs up, it transmits the braking force to the wheel brakes via the brake rod.
The AK 161 coupling head, the Soft-Dock as a buffer and a gas spring are fitted. Before replacement, check the square size of the drawbar tube and the type designation of the wheel brakes, and after fitting adjust the brake system starting from the wheel brakes.
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