This oil pump photograph shows the vent line behind the oil pump. This is a Shovelhead with an S&S pump with the feed inlet on the top plugged. We ran the feed to the bottom like old pumps to clean it up.

The oil lines on a Shovel are straight forward. There are two oil line fittings atop the oil pump cover on late model Shovel engines. The outside fitting is the feed oil line from the oil tank to the engine, the inside oil line is the return oil from the engine to the tank.

There is another oil line fitting threaded into the crankacse just above the oil pump. This is the breather oil line fitting from the engine back to the oil tank. The crankcase breather fitting is located inboard of the pump on the lower curve of the cases and must be vented to the atmosphere.

There is another threaded hole in the crankcases located on the same machined surface of the cases that the oil pump bolts to, this threaded hole is inboard of the pump and hard to see if the pump is already in place. This inboard hole can be plugged, it was originally used to supply oil to the primary chaincase when the factory circulated the engine oil through the primary for chain lubrication. The crankcase vent fitting can be seen in the photo, it is a 45 degree fitting with a length of oil line clamped to it, the line is then routed back under the bike.

Keep in mind that if you want to run coolers or filters to put them in line with the main return from the top of the pump.

That's all folks.