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Post by raychappo on Jul 20, 2015 11:21:09 GMT -5
I'm going to replace both o-rings on the sump where it pushes into the transmission case while I have the engine stripped down. They both look identical but in the parts list there are 2 different part numbers. Are the the same and that there are 2 different numbers for the same part?
Ray
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Post by timpa136 on Jul 20, 2015 12:04:35 GMT -5
Ray, my guess is size and I would guess the larger one slides back on second. I was thinking they had a third o ring to act as a dust or overkill sealing but I don't see it pictured either. Do you have it apart now? Bottom line, I don't know either. If you have trouble matching them up, I will check over here.
Timpa136
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Post by raychappo on Jul 20, 2015 12:39:27 GMT -5
The sump is off and both rings measure the same. I'd have thought if the o-rings were different the would each have a different item number in the parts list but both are listed as item 19 in the parts list.
Although looking at the list it quotes 2off 09280-44004 and 1off 09280-52003. Perhaps some bikes have a single ring and others 2?
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Post by timpa136 on Jul 20, 2015 13:53:13 GMT -5
You are right. I think the early ones had a third larger o-ring next to the fins. pt.# 44 Q (2) and 52 Q(1) might mean diameter
and they found it wasn't necessary in later bikes, still don't know.
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nairb
2nd Gear
Posts: 145 
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Post by nairb on Jul 5, 2017 20:05:39 GMT -5
Very useful thread. I have the engine in bits and was going through the seals needed on the oil sump... 2 are the same with 1 larger. Fortunately fleebay came to the rescue with some similar sized ones.
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