fan clutch and fan belt removel on 1993 GMC Vandura 2500

im changing water pump,i cant remove the fan clutch,i have removed the 4 bolts holding fan to clutch do i have to un do the 4 bolts to the pully on waterpump first? how do i loosen tension on my belt, there is a adjustment bolt that says load one way do i loosen that

Asked by for the 1993 GMC Vandura 2500
You have to remove the belt by pulling back on the tensioner and slipping the belt off. You need to remove the fan and clutch together with the fan shroud and then remove the water pump. If the tensioner is glitchy at all, you need to replace it.