Question about 2003 Harley Davidson FXDWG Dyna Wide Glide

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Just changed primary gaskets and all seals on this side i have oil dripping never been in gear just started up could it be crank breather problem

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Did you change the seals behind the front belt drive pulley? The front pulley is made of cast iron and the final drive gear is made of hardened steel. It's specifically made this way so that the pulley wears instead of the expensive and difficult to replace final drive gear. When the splines in the pulley wear, the pulley loosens up and the tension on the "quad" seal behind the spacer is lost. This allows transmission oil to run down the splines of the final drive gear. Check the oil level in your transmission and see if it's low. When you start the engine or ride the bike, it'll leak a spot about the size of a half dollar. If you wipe that up, it will not leak anymore unless you start the engine or ride the bike. You'll have to pull the front pulley off to check the splines for wear. If they are worn, Harley makes a kit to repair this with.

Now, it could still be the seal in the backside of the primary. A lot of people make the mistake of putting this seal in and assembling the primary with the seal left dry. When the engine starts, the mainshaft starts to turn and the friction burns the lip of the seal up before oil can get to it. The seal is destroyed in the first ten seconds or shorter. When you replace the seal, always put a gasket sealer around the outside of the seal and put some oil or light grease on the lips of the seal before you assemble it.

It's not your crankcase breather as that is at the top of the heads. The two large bolts that hold the air filter backing plate on are hollow and the crankcase breathes through these bolts into the air cleaner.

Good Luck
Steve

Posted on Apr 02, 2011

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