What are the oil lines on a Harley Davidson? Remove the check valve ball with a mechanic’s magnet from inside the oil pump body. Remove the check valve O-ring and spring by hand. Remove check valve cover screw with a flat head screwdriver. Wait until you see a steady flow of oil the attach.Ĭonnect feeder and return lines. After starting the engine look into the tank to verify oil movement. I am using a softail horseshoe tank and running a 93 evo motor. Is there any reason not to put a different spring in my oil pump. The evolutionâ€™s external filter requires two oil lines one line feeds. The design of the oil filter on the shovelhead uses one oil line, which feeds the oil back through the filter and into the oil tank. Routing the oil lines from the oil tank to the engine is simple task. How are oil lines routed in a Harley Evo? Learn new techniques and tips from friendly experts. Sign up for premium membership and get access to our best Harley repair videos and step-by-step instructional projects.

How can I repair my oil pump on my Harley? We are upgrading the cams and and hydraulic cam plate in our next steps. Step by step video on how to install the upgraded Harley-Davidson Twin Cam oil pump. If you're running a wet primary, you can seal the primary feed lines and use separate oil in the primary cover.How to install a twin cam oil pump on a Harley? IF it's a belt primary and a drive chain, just let if feed the chain. If you're running a primary chain but a dry primary, the crankcase vent with a splitter feeding both the primary chain and the rear drive chain will provide adequate lubrication to both. The dealer has both types on the shelf and a knowledgeable parts guy will know which one is appropriate. Putting a TC filter on a Shovel can result in clogged filter and no return to the tank in only a few thousand miles. They look exactly the same but the TC motor requires much finer filtration but has a much stronger oil pump.

THis way you get pressurized oil going to the filter.Īlso, make absolutely sure your filter is the one for the Evo or Shovel FXR, and not for the a Twin Cam Dyna. Always put it after the pump on the return lines. As BASE1530 said, NO, it must come to the filter straight from the pump on its way back to the tank because the scavenger gears on the feed side just don't pull enough to pull oil through the filter.

Shovelhead oil line routing