. Works on pulleys with hub diameters of 1-1/8", 1-1/4", 1-5/16", and 1-3/8". With split collet design, the jaws grip the pulley flange for damage-free removal. Mechanical screw power The 7185 tool removes pulleys on most Chrysler, Ford, GM, and VW vehicles, including Saginaw, Thompson, and the Ford C2 power steering pumps; GM belt-driven vacuum pumps on both gas and diesel cars; and press-on water pump pulleys on GM 4-cylinder and V-6 engines.