[urq] Help - Replacing hydraulic tappets/lifters

[Phil Payne]

> When I remove/re-install a cam gear the engine is
> usually out of the car. Impact wrench to remove cam
> gear and beam-type torque-wrench (more accurate and
> reliable Vs click-type - new flame war? :) to
> re-install. Crank held w/breaker-bar or if trans is
> attached flywheel held w/large screwdriver in flywheel
> teeth. Too McGyver?

First of all - the trick Audi suggest in frame 15-4 of the microfiche
flat don't work.  For those who haven't seen it, they show a picture
of the cam gear being held with a screwdriver against the upper cam
cover retaining stud.  This isn't strong enough by an order of
magnitude or more.  Fiction from start to finish.

I can't understand why Audi - who normally recommend special service
tools at the drop of a Mütze - don't demand the 3036 at this point.

I'm very cautious with advice on the cam gear bolt.  The undoing
torque can be fierce and many engines are interference types - if
you've got the cam too far anti-clockwise and your restraint slips
off, you could easily bend valves.

For ultimate accuracy, a beam-type torque wrench with a light/alarm.
Otherwise an assistant to read the scale or a click-type.  There are
several ways to jam breaker bars in the front of the car to hold a
crank to this torque.  One of the drifts I carry in the toolbox also
fits the flywheel hole.

--
  Phil Payne
  http://www.isham-research.com/quattro
  +44 7785 302 803
  +49 173 6242039