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Old 01-25-2014, 12:00 PM   #1
ipaulog OP
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Question How much before I strip the thread and back off half a turn?

I have had a slight oil weep from the sump plug on my 950 for too long. A year or two back when I bought the bike it was serviced by a KTM dealer. When I came to do the first service and valve check myself I noticed the drain plug was ridiculously tight and it needed a breaker bar to undo. I refitted according to my manual - 20Nm I think - and have noticed a slight oil weep ever since. I have tweaked it another 5Nm with no improvement and only notice the issue when I drop the bash plate.
The question for all the engineers out there is how much torque can I safely put on this before I deeply regret it?
Paul.
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Old 01-25-2014, 12:07 PM   #2
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how about a new washer? or anneal the old one?
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Old 01-25-2014, 12:13 PM   #3
desert sky
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X2 on a new drain plug washer. Replace it with the genuine deal and tighten the drain plug to specifications. Over tightening will not cure your issue. ds
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Old 01-25-2014, 12:23 PM   #4
ipaulog OP
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Sorry I should have stated that I put a new washer on when I did the service.
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Old 01-25-2014, 01:10 PM   #5
Chuckracer
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In that case I'd live with it. The potential bad that can arise from over torquing the drain plug can't possibly outweigh the good.
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Old 01-25-2014, 01:14 PM   #6
FtheRedSticker
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Wrap some Teflon tape on the threads of the plug and use a new copper washer
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Old 01-25-2014, 01:16 PM   #7
Sumi
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20Nm should be enough, IMO go for a new washer instead of doing any harm (the current one might be bad out of the box)
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Old 01-25-2014, 03:13 PM   #8
Keks
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If possible get yourself a Stahlbus oil drain valve. Fit and never touch the thread again. I got those on the XRV750 and XL700VA and love ´em.
http://www.stahlbus-us.com/oil-drain...h1qogpssf8qth5
Cheers
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Old 01-25-2014, 03:30 PM   #9
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maybe try a new plug?
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Old 01-25-2014, 04:48 PM   #10
ipaulog OP
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If possible get yourself a Stahlbus oil drain valve. Fit and never touch the thread again. I got those on the XRV750 and XL700VA and love ´em.
http://www.stahlbus-us.com/oil-drain...h1qogpssf8qth5
Cheers
Chris

Is this a tried and tested design? Seems like a good idea given that the plug is well protected. I already installed a CJ Designs kit on the oil tank.

Thanks for the replies in general. As soon as I get the chance I'll remove the plug and inspect everything before carefully putting it all back together.

Paul.
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Old 01-25-2014, 07:55 PM   #11
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Try to anneal the copper seal/crush washer with a torch. Bring it to a dark red and quench it in cold water. Good as new every time. Got 20,000 miles on one washer... No drips....
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Old 01-25-2014, 10:01 PM   #12
Zuber
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Replace the washer. You probably got it off to one side and tweaked it. Over torquing it will only pull the threads.
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Old 01-26-2014, 12:13 PM   #13
bajamcguide
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New washer plus the proper torque will fix it 25 nm for the oil tank, and 35 nm for the drain bolt at the bottom of the motor. Make sure to clean all the mating surfaces.
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Old 01-26-2014, 12:28 PM   #14
Sumi
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Quote:
Originally Posted by bajamcguide View Post
New washer plus the proper torque will fix it 25 nm for the oil tank, and 35 nm for the drain bolt at the bottom of the motor. Make sure to clean all the mating surfaces.
20Nm for oil tank drain bolt & also 20Nm for the engine drain bolt as per the manual..
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Old 01-26-2014, 01:36 PM   #15
dmn0507
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Quote:
Originally Posted by Chuckracer View Post
In that case I'd live with it. The potential bad that can arise from over torquing the drain plug can't possibly outweigh the good.
+1
that's probably the easiest leak to ignore since it's well hidden down there
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