How does one get the correct tension on the power steering belt on a 1988 Volvo 740 Turbo?
There is a 13 mm nut that locks the pump in place. It will be near where the pulley. After is it is loosened there should be a 10 mm bolt that is used to move the pump in and out to adjust the tension. If you can’t locate it check the other accessories to see what it should look like. I have had them break off so if you don’t see the end of the bolt sticking out where you can get a wrench on it easily that could be the problem. Normally adjusting belt tension is pretty easy with this system.