[v8volvo]

No need to remove the belt but you also will need to loosen the three bolts on the IP mounting flange at the bracket, on the drive end of the pump. Two of them are hex head bolts accessible from the outside, the third is an inhex bolt that you need to get to with an extension and a 6mm Allen tool, preferably with a ball end since you cannot usually get straight onto it.

Before you move the pump at all, you will also need to scribe some very precise marks and rotate the pump exactly back to them when reassembling, otherwise the timing will change. Alternatively if you get the timing tools, and feel comfortable with the timing procedure, you can retime the pump in a further-outboard position. This is done by resetting the position of the rear timing belt sprocket on the cam. This way access is improved permanently but it's more involved.