It depends on the year model of your bike. This thread says your bike is a 01 FXDXT Super Glide. Since 1994, all Harley engines have been what we call "head breathers". The crankcase ventilation is done through ports in the heads unlike previous years where the engine breathed thorough a port in the lower crankcase. In each version, there are baffles to seperate the oil mist from the air. The later version "Head breathers" were better at this than the earlier versions. Still some oil is blown into the air cleaner and makes the removal and cleaning of the inside of the air filter necessary.
However if there is too much oil building up too quickly, in the head breather models there are small "umbrella" valves in the center part of the rocker box covers that over time become brittle due to head. It's not very difficult to take the top off the rocker box cover and replace these umbrellas if you have the proper tools and know how.
On the twin cam engines, there are six bolts holding the top plate on the rocker box cover. Remove these six bolts and the top plate and the center plate come off the head. The umbrella valve is in the center part. Simply remove the old umbrella and pull in the new on in the proper direction. Replace the rocker box covers with new gaskets.
413 views
Usually answered in minutes!
×