Re: Can you give me some guidance?

[Don Hoefer <hoefer@Jaxom.Eng.PKO.DEC.Com>]

Mr. Shields inquires further:

> Hmm... not a locking compound?  Seems to me that 242 would be a better
> idea.  This would also mean that I torqued mine about right at 500-600
> since it would be 1.976*350 = 691.6 Nm *with lubricant*.
> 

I don't know what it's locking properties are if any, but you need the
lubrication properties to prevent damage to the threads which are pretty
fine, and you want to take it apart again someday.

I would be willing to bet that the very high torque that is specified
was done so that a locking compound would not be necessary.  Locking
compounds will fail after time and stress especially on large fasteners,
like on a reused front wheel axle nut BTDT.

> I also thought, and I could be totally wrong on this, that they sold
> all the lubricating products under the Permatex name.
> 

You can buy loctite that contains Teflon in the bubble packs in auto
parts stores.  It is not a lubricating product per se, it is not for
hinges or gears.  It is to aid the assembly of threaded fasteners.

Is there a mechanical or fastener type on the list who could elaborate?

> Does it really contain Teflon?  If so the Teflon's not doing anything
> useful any more than it does in Slick 50...

Yes.  The Teflon is a solid lubricant (like graphite) that won't evaporate
or flow away with time.  Once that bolt is in there the Teflon is not going
to go anywhere.  No constantly moving or rubbing parts like Slick 50 has
to deal with.  It is useful when the parts are moved during installation
and removal.

> 
> > My bolt uses a 1 1/16 " socket.
> 
> Whatcha doing with these 'Murican sockets on an Audi?

I measured the bolt hex head and bought the closest metric sockets.  A 27mm
is too big and a 26mm is too small.  The rear wheel bearing nut (front
wheel drive only) is english as are the few hex head sheet metal screws
that are on my car.

Don Hoefer
'82 Coupe