Torque Spec: Crank S Bolt

[L DC]

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
> 
> http://www.humanspeakers.com/audi
> 
> http://www.humanthoughts.org/
> 


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