Abstract: A tool for bleeding a master cylinder when the master cylinder is unattached to a vehicle. In an exemplary embodiment a bleeding tool includes a shaft attached by means of clamp rods to a master cylinder flange, a clamp handle rotatable with respect to the shaft, and a push rod coupled to the clamp handle through a movable rotatable joint. In an exemplary embodiment, the maximum motion of the push rod during a bleeding cycle is defined by a set of two pins disposed on a ring concentric with the shaft.

Abstract: An improved alternator/starter testing device includes an electronic voltage regulator for regulating the output of an externally regulated alternator. A selectable load switch allows so-called "high output" alternators to be tested without damaging the voltage regulator. For certain types of internally regulated alternators, the testing device includes a meter disconnect circuit, coupled to an "energize" switch in the testing device, which operates to disconnect the testing meter during a period in which the energize switch is temporarily depressed to supply power to an internally regulated alternator under test, thus preventing misleading test results if a defective alternator is tested. Internal thermal circuit breakers are provided at strategic locations in the testing device to prevent internal circuit damage due to defective alternators and starters.