FWIW -I have found the perkinsfuel pump for my volvo d1-30 at nearly half the volvoprice (perkins #130506351). Google it and you will be pleasantly surprised (the volvo part says perkins, as does most of this engine to no one's surprise, right on top!)
Oh yes, of that I am quite aware thanks to you & others on this forum. Knowing that this fuel pump is a bit of an issue for this engine, I hope the part number numbs the pain for others, if only somewhat.
Much thanks from a relative newbie for all your helpful posts!