OS FS-91, bearing replacement.
10-17-2005, 03:40 AM
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OS FS-91, bearing replacement.
Dear all,
My OS FS91 developed a very common problem. After hearing various noises from inside I dismantled it! The main bearing was destroyed and needs replacement. [sm=drowning.gif]
I have found this bearing from local market (SKF, KOYO). I am afraid to use them since I have be told that I need to use ceramic bearings!
It is true? Is it worth the trouble?[sm=confused.gif]
Thanks
Yannis Solaris
Greece
My OS FS91 developed a very common problem. After hearing various noises from inside I dismantled it! The main bearing was destroyed and needs replacement. [sm=drowning.gif]
I have found this bearing from local market (SKF, KOYO). I am afraid to use them since I have be told that I need to use ceramic bearings!
It is true? Is it worth the trouble?[sm=confused.gif]
Thanks
Yannis Solaris
Greece
11-09-2005, 10:37 PM
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Location: Box HillVictoria, AUSTRALIA
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RE: OS FS-91, bearing replacement.
I am attempting to replace the bearings in my OS FS91 SII. Unfortunately, the crankshaft didn't just slide out! [:@]I had to heat the crankcase to get the cylinder sleeve out and the drive washer/woodruff key off and successfully dismantled everything else but the crankshaft wouldn't come out of the bearings. [
] Should I cool it to remove the crankshaft first? How much of a "Tap" can I give it? Should I perhaps use some Penetrene or WD40 to help loosen Any advice? I know I have to heat the crankcase to get the bearings out and back in but I can't quite get to that stage. There was some nasty looking metallic flakes in the crankcase, which may be causing the jam. I am hoping I have not damaged the crank case itself. Also I have some power steering fluid which I was planning to use as assembly oil instead of auto transmission fluid (as per OS site advice). Do you think this would be ok?
] Should I cool it to remove the crankshaft first? How much of a "Tap" can I give it? Should I perhaps use some Penetrene or WD40 to help loosen Any advice? I know I have to heat the crankcase to get the bearings out and back in but I can't quite get to that stage. There was some nasty looking metallic flakes in the crankcase, which may be causing the jam. I am hoping I have not damaged the crank case itself. Also I have some power steering fluid which I was planning to use as assembly oil instead of auto transmission fluid (as per OS site advice). Do you think this would be ok?
