Crank bolt torque for timing belt change (10v)

[Phil Payne]

> I thought a torque wrench applied a measured amount of torque TO THE SQUARE
> DRIVE PART of its assembly????
>
> If you put a 258 ft. lb. torque setting on a torque wrench five feet long
> or one foot long and make it click, you've applied 258 ft. lb. of torque to
> the square drive fixture.  The Audi tool is designed so that when you
> supply the desired torque to the hole in its end, you've applied the
> correct torque to the nut on the crankshaft.

Worthwhile to repeat, of course, that the 2079 and the torque wrench must be perfectly in
line.

The 2079 wasn't developed as a torque multiplier, though that is of course what it also is.
The reason was to allow changing the timing belt on an ur-quattro without removing the air
dam.  With the car on a lift, a 2079 allows you to get onto the harmonic damper bolt from
below with the air dam in place - it helps to just loosen the bumper but you don't n eed to
remove it.

You can't get a torque wrench - and most certainly not a 3/4" drive one, which is the only
safe size at this torque - on to the bolt in this configuration.  The 2079 is a lot thinner.

--
  Phil Payne
  http://www.isham-research.com
  +44 7785 302 803