Question Posted By: mulder7pac on 6-7-2006
Back to Questions
|Make of Bike:
|Model of Bike
|Year of Bike
|Other info on Bike
|What's your question?
||Motor oil in the primary
||I have motor oil in the primary, I have changed out the seal three times. Is there any short fixes?
- Check the return line from the bottom rear of the inner primary to the case for cracks or loose clamps. Oil is returned by that line sucking it back into the cam chest. You could have a vacuum leak. By: 47Knuckle-Dragger on: 6-7-2006
- How is the primary gasket? The oiling system operates under a vacuum and needs to be fairly air tight to return properly. After checking what Knuck said, check the easy things first for obvious seal issues; derby and inspection cover gaskets, solenoid seal, starter shaft seal... By: kmiller73fx on: 6-8-2006
- Wait a minute - is that an independent bath on that? If so and you're getting motor oil in your primary then likely the crank seal is blown. By: kmiller73fx on: 6-8-2006
- [Correction] Sorry, bad eyes, I thought that said 1981.
Late 1984- started with the wet clutch. There's supposed to be oil in the primary. The only way I can think of that you think you've got motor oil in your primary is that you've changed it recently, and the oil level is not only higher than what you put in there, but it's gotten dirty awful quick from old engine oil that's black.
That the case? By: 47Knuckle-Dragger on: 6-8-2006
- Are there any quick cheap fixes for this problem? By: mulder7pac on: 6-9-2006
- It's not a tough job - you can do it with the motor in the bike. Just yank the primary and guts, alternator/rotor, stator, then pull and replace the seal. Best way to pull the seal is to drill a SMALL hole through the metal body but STOP as soon as it pierces through so as not to damage anything behind there (bearing). Then you can thread in a long sheetmetal screw and pull it with pliers or use a slide puller. When you put the new seal in, make sure the spacer it butts up against has a perfectly smooth surface. Put the spacer and seal in as a unit, press it in all at once together with some gasket sealer around the outside edge of the seal. All done. By: kmiller73fx on: 6-9-2006
- There was a silent recall on that issue. There is a crack in the crankcase. My buddy had the same problem in an 87 model. By: Tha_Rooster on: 7-17-2006
- it took me three tries 88 xl,still gets some change primary fluid more often,never had problems with slipage(oil),or drag,(due to too much fluid)Barrntt kevelars By: willielad on: 6-2-2007
- My pleasure, Mike. Yep the panddig/bladder of a camelbak has come in handy for me on several occasions before, too! And when I'm riding without one and just using the back pockets of my jersey for storage, I make sure I only put soft items like food in the middle pocket. At least if I flip on my back I'll only squash the food, and not squash a multitool or CO2 cartridge into my spine! By: Guest on: 3-27-2013