Abstract: A drill block is aligned and a cutter diameter selected to repair a through-hole in a part. The hole has a nominal diameter. A pin having a less-than-nominal diameter is inserted into the hole, with a bushing on the pin placed over the hole at a first side of the part, the bushing having an outer diameter that is greater than the nominal diameter. Light is shone on the hole. A drill block engaging the pin is positioned to move the pin and the bushing until no light shines past the bushing.

Abstract: A method and apparatus for aligning a plurality of objects may be present. A locating pin may be positioned relative to secondary holes in a plurality of objects. The locating pin may comprise a segment with a cross section having a number of portions alternating between curved sections and angled sections and a surface. The locating pin may be inserted into the secondary holes. The number of portions of the surface corresponding to the angled sections may be configured to align the secondary holes in a desired direction to align the plurality of objects.

Abstract: A method and apparatus for aligning objects may be present. A locating pin may be positioned relative to secondary holes in a plurality of objects. The locating pin may comprise a segment with a cross section having an elliptical shape, a surface, and an indicating feature associated with the segment. The locating pin may be inserted into the secondary hole, wherein a number of portions of the surface align the secondary holes.

Abstract: A method and apparatus for aligning objects may be present. A locating pin may be positioned relative to secondary holes in a plurality of objects. The locating pin may comprise a segment with a cross section having an elliptical shape, a surface, and an indicating feature associated with the segment. The locating pin may be inserted into the secondary hole, wherein a number of portions of the surface align the secondary holes.

Abstract: A method and apparatus for aligning a plurality of objects may be present. A locating pin may be positioned relative to secondary holes in a plurality of objects. The locating pin may comprise a segment with a cross section having a number of portions alternating between curved sections and angled sections and a surface. The locating pin may be inserted into the secondary holes. The number of portions of the surface corresponding to the angled sections may be configured to align the secondary holes in a desired direction to align the plurality of objects.

Abstract: An improved mixing and spraying system comprises: one or more pairs of material mixing tanks wherein both tanks of each pair selectively and alternately exhaust into a single common material exhaust assembly and discharge through a single spray nozzle whereby continuous mixing and spraying procedures can be simultaneously maintained; a unique, combination, materials grating and filtering system associated with each tank; remote control apparatus for remotely controlling the rate of material flow from the spray nozzle; method and apparatus for operating numerous hydraulic motors at the same time; and method and apparatus for maximizing the use of hydraulics and hydraulic motors while eliminating the use of gears and pulleys for driving motors.