Abstract: A clamping assembly includes a first jaw having a plurality of alternating grooves and lands formed thereon, a second jaw having a plurality of alternating grooves and lands formed thereon, and a spring provided between the first and second jaws. The jaws are pivotable relative to each other. The jaws are attached to a draw stud. The draw stud is formed from an elongated cylinder which has a conventional thread form formed on one end thereof and a plurality of alternating grooves and lands formed on the other end thereof. The alternating grooves and lands formed on the jaws mesh with the alternating grooves and lands formed on the draw stud to mate the jaws with the draw stud.

Abstract: A hand tool for enabling a mechanic to manually rotate a diesel engine, said tool comprising an elongated generally L-shaped handle having a flange located at the lower end thereof and having toothed wheel secured to said handle at a point spaced from said flange a distance such that when said flange is inserted into the recess of a diesel engine damper, said toothed wheel will rest on the outer surface of said damper and, when said tool is rotated, said flange and said wheel will clamp said damper therebetween to enable the mechanic to manually rotate said damper and said engine.