Andrew's Harley Davidson Cam Conversion Kit

Here are the oil-pump assemblies, with the old style on the left. Oil passages are different between the two parts that mate to the cam support plate. In addition to the absence of the O-ring on the new style the gerotor size has been increased in the new pump.

When operating, these gerotors are the means by which the oil pump moves oil through the system. Oil gets trapped between the inner and outer gerotor and essentially carries it between the "spaces" as the two gerotors spin together.

After removing the cam cover, the rear camshaft drive sprocket (on top) connected to the crankshaft sprocket via the Hyvo chain can be seen.

We then disassembled the rear camshaft drive sprocket with the help of a crankshaft sprocket lock tool placed between the sprockets. This prevented their rotation while we loosened the fasteners.

The new oil pump was bolted to the back of the cam plate, and then the new cams were simply slid into their respective bores in the cam plate, then attached together on the backside with a roller chain.

After attaching the new rear camshaft sprocket and crankshaft sprocket, the roller chain was placed around the sprockets and the bolts tightened to spec. This was followed by attaching the spring-loaded hydraulic chain tensioner to the cam plate.