The invention relates to a motor assembly aid (1), composed of a first inclination plate (2) with a continuous bore, wherein the upper and lower sides of the first inclination plate (2) are each plane and enclose an angle greater than 0 ° and less than 45 °, a second inclination plate (3) disposed on the first inclination plate (2) and rotatable with respect to the first inclination plate (2), the upper and lower surfaces of the second inclination plate (3) each being planar and an angle greater than 0 ° and less than 45 ° and wherein the second inclination plate (3) comprises a continuous bore with a cup-shaped countersink (4), - A screw holder insert (5) with a continuous bore and a cup-shaped part surface (6), which is pivotally mounted in the cup-shaped countersink (4) of the second tilt plate (3) and - A screw (7) comprising a screw shank (8), which is guided through the bores of the screw holder insert (5) of the second inclination plate (3) and the first inclination plate (2).
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