Torque Spec: Crank S Bolt

[Kenneth Keith]

I first interpreted Huw's post that way as well, as in "the crank bolt
would be stuck forever" (would be too tight), but I think what he
probably meant was "the crank bolt won't come loose accidentally"
(will be tight enough).

I don't think it's "loctite" so much as it is "anti-seize", isn't it? 
Loctite probably serves the same purpose if it isn't too strong.

Ken

L DC <ldc007usa at yahoo.com> wrote:
>
> Sounds scary Huw!!
>
> Especially the part about "If you cleaned it and put
> on a little loctite, it's not going anywhere."
>
> You're suppossed to put loctite when doing this job,
> according to the Bentley manual, I assume the previous
> owner did.
>
> What do you suggest?
>
> Also, you wrote: "If you lean on it 4 feet out with
> 100 pounds of weight, you've just put about 400
> foot-pounds on it.
>
> What does that mean? Does it mean using tool 2079
> hooked up to a 4-feet pipe?
>
> This would be for replacing the 27mm bolt, correct?
>
> Since I would most likely not have access to a torque
> wrench higher than 200 foot-lbs, can I just torque it
> with one that measures to 200 foot-lbs and then just
> tight it some more (after removing the torque wrench)
> using, say, a 6-foot metal pipe?
>
> If I do the above procedure, would I run the risk of
> OVER-torquing?
>
> Again, many Thanks to all for your input.
>
> -Best Regards,
>
> -Louis
>
> --- Huw Powell <audi at humanspeakers.com> wrote:
>
> > > According to the Bentley manual, the torque spec
> > for
> > > the 27mm crank shaft pulley bolt on my '87 VW
> > Quantum
> > > Syncro, which shares the same drive train as the
> > Audi
> > > 4KQ, is set at 258 lbs USING tool 2079 (extension
> > > bar).
> > >
> > > This means that in the absence of such tool, the
> > > torque on the actual 27mm bolt is greater,
> > correct?
> >
> > Yes, and I forget how much we calculated it to be.
> > But it's big, and
> > really in the range of "very high" rather than
> > "precise".  That is one
> > big bolt, and you're unlikely to break it, doing
> > what we usually do,
> > which is to put a 4 foot or so pipe on a 1/2"
> > breaker bar and impact
> > socket, and then hang "most" of our weight on it
> > (depends on how big you
> > are).  If you lean on it 4 feet out with 100 pounds
> > of weight, you've
> > just put about 400 foot-pounds on it.  If you
> > cleaned it and put on a
> > little loctite, it's not going anywhere.
> >
> > --
> > Huw Powell