Metrics r'Us

["Al Powell" <APOWELL@agcom.tamu.edu>]

Hizzoner Phil Payne sayeth:

> The German microfiche for the WR and MB engines says "use the tool" and the 
> torque wrench setting should be 350Nm.  It also says that "2079 should be free 
> to move with the torque wrench".
>  
> The 20V (RR) documentation says the same thing (also 350Nm) but it adds the 
> comment that a torque of 450Nm is required if tool 2079 is not available.
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THANK YOU!!  Finally, our brother-across-da-pond breaks thru the 
Bentley party line and offers some really helpful information.  If 
one does not have the infinitely desirable tool #2079, I'm willing to 
believe that this provides a good alternative torque setting.

And since my forearms are finely calibrated (just like the rest of my 
body), I can attest that I have applied more than 82.97 pounds of 
pressure to the 4-foot pipe twisting that crank pulley bolt..

450 N-M divided by 1.35582 = 331.9 lbs/ft, divided by 4 = 82.97

My information is that to get N-M from lbs/ft, one multiplies by 
1.35582, hence the division to reverse the calculation.

OTOH, math is not my strong suit and this required numerous fingers & 
toes..........

Hizzoner continues:
> 
> In message <7BDF3A7613@agcom.tamu.edu> "Al Powell" writes:
> 
> > I used a bit of anti-sieze on the bolt, ...
> 
> The German documentation says to use "an anti-corrosion compound".

Yup.  And I figgur that anti-sieze will serve that purpose.  Nor do I figgur 
that the crank bolt is likely to come loose.  But if it rusted a bit 
while in place, I think I would be darn lucky to ever get it loose 
again.


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Al Powell, Ph.D.                 Voice:  409/845-2807
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