Fanbelt Problem

[twigness]

I have just replaced the two alternator belts and the aircon belt on my 3.0l 2nd gen surf. They are all pretty tight and don't show any slack when the motor is running but at startup they squeak for a few seconds and when wet they squeak for ages. I guess it's probably a tension problem but just how tight should they be. Is there any test as to check their tension. Any help will be greatfully received.
Cheers

[BUSHWHACKER]

At the longest part of the belt, you should only be able to twist it a quarter of a turn. Any more and it's too slack.

[twigness]

WOW, that was quick.
Cheers Bushwhacker, you da man.