How do you replace the belt for the A/C compressor for a 93 VW Fox?

The compressor does not have a pivot point nor slide slot.

If the belt mount area has no tensioner then either the a/c compressor moves or another component that the belt goes around does. Sometimes the belt runs more than the compressor. If it only runs the compressor then I still say the compressor moves and you cannot see it. I just noticed where you are at. I used to live in Gladstone. If you can drive it without causing a problem then take it to Dale's Automotive in Lenexa and he will help you. Ask for Dale and tell him Ron says hi. He is a very close friend.