Sealing flange and rotor are pressed together with three M6 x 35 mm screws from the crankshaft.
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Screw three screws M6x35 into the threaded bores of the sealing flange -arrows-.
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Screw the screws alternately (max 1/2 turn (180°) per screw) in the sealing flange and press the sealing flange together with the rotor from the crankshaft.