Okay, here's a quick guide on what you need to install an AFN cover on a 1Z engine.
- Oil seal adapter
- Seal around the adapter.
- Replacement for the existing crane hook on the right side.
- Additional bracket on the front left water inlet.
- Threaded bolt (to be self-made) for the intake manifold.
Most of the fiddling is caused by the crane hook. Even removing the existing one is difficult. To do this, loosen the timing belt cover on the cylinder head (small SW 10 screw) and then loosen the SW13 screw on the hook, which is mounted from the timing belt side. Remove the hook. The new one must first be bent into shape: it has a total of 3 "wings" as supports, but only the one facing the ESP is needed. The others are specific to the Golf 4 and hit the G3 timing belt cover. Therefore, I simply bent them flat with a vise (it was Sunday, and I didn't want to use a cutting tool

).
Screw on the adjusted hinge, but only in extremely small increments, like 1/6 of a turn at a time!!!
The other bracket at the front is much easier to install. Simply loosen the two screws of the water connection and re-tighten them with the bracket.
For the third stop, you need to remove the screw that holds the turbo pressure pipe and replace it with a threaded rod. I happened to have one left over from the valve cover of a T3 bus TurboDiesel.
Screw in the threaded rod and tighten the pressure pipe with a regular nut.
Now, it is absolutely necessary to lower the return line (which already shows signs of damage from the small cover). To do this, loosen the screw on the ESP, lower the right-angled outlet, and then tighten the screw again.
Now, just put the cover on... and we're done!
Have fun!
martin