Idler mounting for motor vehicle alternator belt tensioning, uses extension of alternator mounting bolt, with cylindrical shoulder to carry idler wheel

摘要

The mounting is fixed to a part (3) of the engine by a screw (4) which attaches the alternator (1) to the engine. The screw has a cylindrical shoulder (7) that passes through the center of the idler wheel (20) bearings. The shoulder has flanges (6,8) to provide axial location for the idler wheel.