Side stand bolt had fallen off - Ducati Supersport 939 Forum
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post #1 of 19 (permalink) Old 07-28-2019, 03:01 PM Thread Starter
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Side stand bolt had fallen off

Hi guys. Yesterday I got off the bike and the side stand failed to keep it up. The bike started to “fold” but I managed to get it before it hit the ground. Did some minor damage on the gear shifter. Worst thing is you cannot let the bike go if you’re in “a wrong place”. Anyways, check your side stand bolts now and then!!
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post #2 of 19 (permalink) Old 07-28-2019, 03:20 PM
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Iím not sure if itís any consolation but there have been about 6 or so riders who have experienced the same problem with a side stand bolt (or both) backing out.

Iím surprised they didnít apply LocTite at the factory.

Glad you caught the bike before it did any more damage.
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So, lemme get this straight.

I twist this little tube, it gets loud, I go forward really fast and it makes me smile...is that how it all works?
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post #3 of 19 (permalink) Old 07-28-2019, 07:28 PM
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This is truly the Achilles Heel of these motors. Ducati has been using this block design for 30+ years and this is the only thing they never figured out how to resolve.

Anything bolted into the lower block holes has a tendency to vibrate out and it is prudent to install with Locktite, torque correctly, and verify torque annually or more often.

The risk is especially high with the side stand bolts getting loose and ultimately cracking the case with incorrect weighting of the bike on the stand.
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post #4 of 19 (permalink) Old 07-28-2019, 09:23 PM
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Quote:
Originally Posted by psyopper View Post
This is truly the Achilles Heel of these motors. Ducati has been using this block design for 30+ years and this is the only thing they never figured out how to resolve.

Anything bolted into the lower block holes has a tendency to vibrate out and it is prudent to install with Locktite, torque correctly, and verify torque annually or more often.

The risk is especially high with the side stand bolts getting loose and ultimately cracking the case with incorrect weighting of the bike on the stand.
Can also dangle on the spring. Going around a bend it could hook the ground and cause a high side.
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post #5 of 19 (permalink) Old 07-28-2019, 10:11 PM
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Quote:
Originally Posted by amoslws View Post
Can also dangle on the spring. Going around a bend it could hook the ground and cause a high side.
As Amos indicated, here's one related thread also on the spring...

https://www.ducatisupersport939.net/...nd-spring.html

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Last edited by Ed K; 07-29-2019 at 12:33 PM.
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post #6 of 19 (permalink) Old 07-29-2019, 09:09 AM
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Glad this was brought up...reminds me I need to check mine!
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post #7 of 19 (permalink) Old 07-29-2019, 12:10 PM
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That was an eye opener. I just checked mine. Now this was just a quick check while on the side stand:

It's a 13mm bolt and accessible on the back side, enough clearance for a wrench. I was able to squeeze about an 1/8 of a turn out it, so it wasn't fully tight. This bold wasn't flush to the mount, I'd guess about 1/4 in gap with plenty of clearance for the spring to pivot.

And if the bike ever fell, if it's under warranty and I paid for the $400 annual service, I'd call foul.

I'll give it another look-see when I get it on the rear stand.
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post #8 of 19 (permalink) Old 07-29-2019, 12:40 PM
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Folks there are two Allen cap bolts, I can't remember if they are a 10 or 8mm Allen key fit. You should definitely torque them up to 24nm. The plate is also to be torqued up to 36nm. It's been around 5 months since I finished the 1200 conversion but I think they are correct. It is not only the pretty silver bolt on the front that ought to be checked and tightened.

Edit: I have checked and screenshot the manual for you....
Grease B is a lithium based grease.
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post #9 of 19 (permalink) Old 07-29-2019, 02:33 PM
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I saw the allen head on the outside and it looked pretty flimsy, the 13mm nut is on the inside.

Did I do it wrong?

OK Amos, you're showing the attachment bracket allen bolts, not the kickstand pivot? I'll check them as well but I am not sure where the likely failure points are.

John L

Last edited by LowRyter; 07-29-2019 at 02:35 PM.
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post #10 of 19 (permalink) Old 07-29-2019, 04:54 PM
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Quote:
Originally Posted by LowRyter View Post
I saw the allen head on the outside and it looked pretty flimsy, the 13mm nut is on the inside.

Did I do it wrong?

OK Amos, you're showing the attachment bracket allen bolts, not the kickstand pivot? I'll check them as well but I am not sure where the likely failure points are.
Take a better look at the pic bud. It has all the clamping points in it. Essentially it's best to check all of them. Only trying to help.
I recognise you like to do your own handy work, the 2014 monster 1200 manual can be found online where other than a few small body work differences, the SS is the same. You can use the 1200 manual for instruction.
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