Bolt on the left side.

[di_]

Does anybody know the purpose of this bolt?

it`s got a bit rusty on my bike. so a want to rpalace it.
If I just unscrew?

 

[Deleted member 1183]

I just had a look at it on my bike. I note the washer at its base, and from the shape of the casting that it screws into I am thinking it is an oil way. It is of course possible that it is a retaining bolt for something inside the casing, and for that reason I would not touch it without further information. Other than that I am not much help.

 

[Beemerphile]

It seems to be the "Do Not Touch" bolt. In the service manual on page 13-6 which describes removal of the alternator there is a caution not to loosen the bolt, which they call the "alternator sealing bolt".

So, I guess you have to ask yourself...

[video=youtube;8Xjr2hnOHiM]https://www.youtube.com/watch?v=8Xjr2hnOHiM[/video]

 

[deedub]

Dammit. Now that I know it's there and that I'm not supposed to touch it...
[video=youtube;NITBfc1EOBo]https://www.youtube.com/watch?v=NITBfc1EOBo&t=00m32s[/video]

 

[di_]

my god... what to do now ?

 

[dduelin]

my god... what to do now ?

You might try getting an acid or alkaline product that chemically treats the rust and prepares it for painting. Any hardware store will have something for this. The products are very harsh and can remove paint or ruin unprotected surfaces but with some masking tape or bits of plastic film to protect the surrounding areas use a small modeling brush to treat just the bolt head that is rusted. After the product is dried and the rust is stabilized then use another small modeling brush to paint the bolt silver, grey, or whatever color you choose. When you are done only you will know it was treated. I had boats in the past they often have a fitting or fastener that have to be treated like this.

 

[Beemerphile]

my god... what to do now ?

Embrace the rust. If you call it "patina" it will help you feel better about it.

 

[davidc83]

my god... what to do now ?

WD40 and a toothbrush....

 

[Number14]

WD40 and a toothbrush....

Preferably not your own toothbrush

 

[DanH]

Preferably not your own toothbrush

preferably not my toothbrush either...

 

[Ridealot]

Preferably not your own toothbrush

Use your wife's toothbrush

 

[Beemerphile]

Use your wife's toothbrush

Let us know how that works out.

 

[lootzyan]

From your friendly Walgreen's.
Mostly used on chain, but sometimes used on spare set of teeth... to preserve unforgettable taste of garage....

View attachment 28145

 

[TCRider]

Man you guys are ruthless and maybe toothless.