1992 Volkswagen Jetta Q&A

1992 Volkswagen Jetta Question: Fan belt adjustment

On my 92 jetta the a/c,water pump and alternator belts keep losing the proper adjustment as the car is driven for a day or two.....why is that? -
Answer 1
If "V" belts they settle down into pulley and will need readjusted. The way they are being adjusted is suspect if happens repeatedly. How are they tensioned? -