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Post by hopwheels on Jan 26, 2007 21:07:10 GMT -5
Got the oil strainer cover off (see my reply in holmesboy's post titled "Got the S$%ts" in General Discussion for the back story  ) and this is what I found...   Guess the cast alloy can fatigue over the years from tighening/loosening of the drain plug? At least I found my oil leak ;D Gary Hopwheels |
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Post by pablosrfivehundred on Jan 26, 2007 21:23:40 GMT -5
hey hercules,
simmer down.
wow, that is crazy broken. atleast it's still availible $20 south seattle yamaha.
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Post by hopwheels on Jan 26, 2007 21:27:13 GMT -5
You mean you're not supposed to use an 8ft. handle on the wrench to torque down the plug?  As for SSY, that's exactly where I ordered mine... then I found a spare in a box in the garage today... oops  . I'm a doof. |
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Post by StewRoss on Jan 27, 2007 6:35:36 GMT -5
Hi Gary, Yep, seen this before... SR  |
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Post by sr5ooed on Jan 27, 2007 9:22:23 GMT -5
The leakage comes from not replacing the crush washer. It should be changed every oil change. Although, you can reuse it a few times. On some bikes the threads just get stripped out, a little easier to fix. On my Norton gearbox I tapped the hole out with a NPT tap.
Ed
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Post by hopwheels on Jan 27, 2007 10:24:36 GMT -5
It was a brand new plug and crush washer. Went with a set of the magnetic ones, I'm sure eneryone's seen on eBay. A small crack could have been there already, and then sitting the motor on the garange floor when I was rebuilding the top end could have finished it off. All that weight and all. I'll be using the motor stand I have from now on that's for sure.
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Post by StewRoss on Jan 28, 2007 0:15:22 GMT -5
Hi, I reckon a lot of this damage probably comes from overtightening...use a torque wrench if you are able... 22ftlb (max) Hopefully that will prevent the problem. SR |
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Post by robomod on Jan 28, 2007 19:57:08 GMT -5
Looking at my bike the other day- I sourced my leak to the same part, but there's so much filth I cant see where the actual leak is. Thanks for the info.
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) and this is what I found...
. 
