Abstract: Method and apparatus for rebuilding advance weights of a distributor assembly. The apparatus includes a drilling fixture having a hole and a weight-engaging balance pin positioned to one side of the hole, and a stepped pin having a large diameter shank accommodated by the hole in the drilling fixture and a small diameter shank accommodating deformed oblong holes of the advance weights. The method includes positioning the deformed oblong hole of the advance weight on the small diameter shank of the stepped pin establishing the original axis of the original hole, balancing the advance weights against the balance pin, removing the stepped pin, and drilling the deformed oblong holes in the advance weights out to an oversized round hole. Subsequently, the advance weights are reinstalled with a nylon bushing in the bored oversized hole on the pins of the distributor assembly. The apparatus of the drilling fixture and stepped pin can be sold in an over-the-counter kit at auto part stores and repair facilities.

Abstract: In an automotive clutch having a clutch disc clamped between the flywheel and a movable pressure plate held by strong springs anchored on the rotating cover and lifted by action of a throw out bearing movable concentrically of the transmission input shaft to engage the release fingers which lift the pressure plate, and a clutch pedal in the operator's compartment of the vehicle, a linkage for moving the throw out bearing against the release fingers, the linkage including a length adjustable hydraulic fluid filled link and a valve thereon to bleed off a small quantity of the hydraulic fluid when the release fingers bear firmly against the throw out bearing while the linkage is in rest position to relieve pressure on the hydraulic fluid and allow the throw out bearing to move away from the release fingers.

Abstract: A grease gun coupler for attachment to a Zerk fitting, the coupler having a rotatable socket to constrict the jaws onto the Zerk fitting; there being a non-yielding multi-part mechanical connection between the rear edges of the clamping jaws and the front end of the tubular base of the coupler, including a rigid sleeve bearing rearwardly against the tubular base of the coupler and having rigid legs projecting through the base wall of a cup-shaped seal and bearing against the annular disc which engages the jaws.

Abstract: A specific gravity tester for antifreeze solutions including a transparent tube, a bulb on one end, and a sample-collecting hose on the other end; the transparent tube being of molded plastic and defining an interior guideway with broad, flat surfaces having projecting ribs to maintain the floats in spaced relation to the surfaces, the sidewalls of the tube having flat inner surfaces defining the guideway and rounded convex exterior surfaces to provide the sidewalls of the transparent tube with a magnifying lens characteristic.

Abstract: A spark plug cover removing tool having a pair of lever arms which are very short and have hook-shaped gripping portions and jaws which are circular to embrace and grip the boot covering a spark plug, the jaws extending substantially less than semicircularly to define longitudinal edges to bite into the resilient spark plug boot and end lips or flanges extending transversely of the end of the jaws to bear against the end of the boot.

Abstract: A belt enrailing and derailing device having an elongate flexible body to conform to the shape of a V-belt groove in a pulley; the flexible body being formed of rubber to frictionally grip the side faces of the pulley at the groove, there being projections from the flexible body, one extending obliquely off to the side of the body to catch, carry and enrail the belt onto the pulley; and the other projection providing a camming action to carry the belt off to the side of the pulley in a derailing operation.

Abstract: A V-belt manipulating tool including an elongate rubber-like base having a V-shaped clip at one end to stabilize the tool in the pulley groove, there being upstanding rigid ears on the metal clip for manipulating the V-belt, the tool also having an upstanding lug at the opposite end with an oblique camming face at one side to guide and direct the V-belt off to the side of the pulley in removing the belt from the pulley.