In a decoupling thrust comprising harnessed axially but is free in rotation with respect to the other, an element for action on the device declutching of a clutch, and a maneuvering element is actuated by a control member, this latter element comprising at least one radial arm 6 and of the supports in the axial and radial to the said control member, these supports are insured, respectively, by a disk 8 provided on the arm by a pin 81 and by a flange 91, called tangential, of a plate 9 also comprises a transverse flange 92 perpendicular to the first interposed for clamping between the chip 8 and the arm, having an opening 93, in view of its crossing by the pin. / p & & p & application to the decoupling thrust for a motor vehicle.
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