Rear Wheel Spindle Corrosion - Ducati Supersport 939 Forum
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post #1 of 12 (permalink) Old 10-11-2018, 11:40 PM Thread Starter
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Rear Wheel Spindle Corrosion

Pulled the rear wheel to replace the first Angel GT. The tapered bushing was sort of stuck and when I finally go it loose, if found a ring of what appears to be corrosion. See pictures below.

Has anyone else had this happen? Seems like I should coat the spindle with some sort of grease to prevent the corrosion. Any thoughts on this? Not sure what to do.

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Mark Craige
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post #2 of 12 (permalink) Old 10-12-2018, 03:32 AM
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I'd clean it up with some scotch bright and put a very light layer of copper grease on it.
I'd imagine its just some salty water got down the back of the wheel.
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post #3 of 12 (permalink) Old 10-12-2018, 04:12 AM
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Yip mine had similar corrosion when I changed my tyres for the Rosso corsa 11 I posted a picture on her somewhere
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post #4 of 12 (permalink) Old 10-12-2018, 12:21 PM
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Quote:
Originally Posted by Matt_SSS View Post
I'd clean it up with some scotch bright and put a very light layer of copper grease on it.
I'd imagine its just some salty water got down the back of the wheel.
Matt
This is the answer. Manual calls for a light coat of moly grease on the spindle, and the threads too. Mine was dry the first time I tool the wheel off, and had some white spotting on the spindle.

The circlip acts as a mechanical lock to prevent the nut from loosening, so no worry about chemical thread lock. The range of 220-240 NM should be used for the rear nut, starting at 220NM to see if one of the four holes lines up for the circlip, and increasing by 5NM until one of them does.

There was someone on the forum who had an issue of their paint corroding after using a particular Maguiars truck soap. That wasn't you @macraige , was it?

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Last edited by psyopper; 10-12-2018 at 12:29 PM.
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post #5 of 12 (permalink) Old 10-12-2018, 01:19 PM
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My bike hasn't had this issue yet, I have 10,500km and it's about to be stored for the first winter. Both times I had the wheel off I cleaned the old grease off and put on new grease. The recommended grease is Shell Gadus S2 V220AD, but I couldn't find it. I bought a molybdenum grease with similar properties that I've been using instead.
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post #6 of 12 (permalink) Old 10-12-2018, 08:04 PM
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That's some pretty gnarly corrosion, those pits looks fairly deep to me. As someone else said, clean all the corrosion out, try and get it shiny again and put ample grease on it. I'd almost say take it to the dealer, or send an email to Ducati with the pictures about the possibility of a warranty replacement. I'm sure somewhere in the language it says that corrosion isn't covered though.
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post #7 of 12 (permalink) Old 10-12-2018, 11:32 PM Thread Starter
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There was someone on the forum who had an issue of their paint corroding after using a particular Maguiars truck soap. That wasn't you @macraige , was it?
Not me.

Thanks for all the information. Got me some grease, will clean up nice and shiny, coat it lightly and put it back together.

Mark Craige
Tulsa OK
'17 SuperSport S, Akra Slip-ons, touring w/s, hard bags, etc.
'12 Multistrada 1200S Touring, full Termi., (sold)
'10 848 Hayden SE, full Termi. (sold)
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post #8 of 12 (permalink) Old 10-13-2018, 04:00 AM
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Quote:
Originally Posted by macraige View Post
Pulled the rear wheel to replace the first Angel GT. The tapered bushing was sort of stuck and when I finally go it loose, if found a ring of what appears to be corrosion. See pictures below.

Has anyone else had this happen? Seems like I should coat the spindle with some sort of grease to prevent the corrosion. Any thoughts on this? Not sure what to do.

Attachment 34638

Attachment 34640
Wow I would never have expected that from a new bike. Surely a warranty issue. Good thing you found it. Do you know what caused it. Almost seems like someone has poured acid over your nut. Is the nut the OEM or aftermarket.
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post #9 of 12 (permalink) Old 10-13-2018, 05:47 AM
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Originally Posted by amoslws View Post
Wow I would never have expected that from a new bike. Surely a warranty issue. Good thing you found it. Do you know what caused it. Almost seems like someone has poured acid over your nut. Is the nut the OEM or aftermarket.
I see where you are coming from with maybe dissimilar metals but I don't think the nut would have anything to do with the corrosion. There is a thin washer and quite a fat conical washer inboard of the nut, which I think would be maybe 5mm or so from the corroded area.
The corrosion looks to be quite aggressive, like some acidic liquid has gotten in there. Mine is well greased and corrosion free.
As this is a safety issue, the spindle holds the rear wheel on, I would push the dealer for a replacement.

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post #10 of 12 (permalink) Old 10-13-2018, 09:19 AM
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My bikes are stored in a heated garage and never driven in the rain. It is amazing how things rust. My old bike don't have the issue like the new bikes. I replaced lots of the hardware on my Indian with stainless and Ti hardware.
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