Feuling Oil Pump Gear Alignment Tool For Harley Orient the flats of the oil pump gear in relation to the crankshaft flats. Features: Feuling recommends assembling the camplate, oil pump, camshaft etc. together on the bench, lining up the oil pump gear flats with crankshaft flats and installing the complete assembly into the camchest as one complete unit This procedure has proven to provide the best seal on the back scavenge port of the oil pump to engine case as the parts are always going inwards towards the scavenge port Made in the USA Twin Cam engines: Rotate the crankshaft flats so they are horizontal and align oil pump gear flats horizontal to match. Milwaukee-Eight engines: Rotate the crankshaft flats so they are vertical and align oil pump gear flats vertical to match.