You probably do not need a new pump as the motor is running. That indicates the the wiring is okay. And the motor is the only semi-complicated thing about the pump. You have probably sheared the " key drive " that connects the motor shaft to the pump gear. It is a cheap piece of plastic that the manufacturer would say is meant to fail to protect other parts. In reality, it sells lots of pumps. But anyway, there is a reason the part would break and that is usually that the gears have swollen. But the gear kit includes a new " key drive". So - two birds with one stone. If your pump is a FPL brand it is now sold by Graco here is a link to an "Instructions- part list" for the Graco GTP10 pump that comes in several models.
http://www.graco.com/content/dam/graco/tech_documents/manuals/311/311304/311304EN-F.pdf
My old FPL model fp10 is now a model 260000 Graco. GRaco does not sell direct so you need a distributor -- I just "googled graco repair kit 260434" and came up with a distributor as in "empirefoam.com" I ordered a (seal) repair kit from Intech (888 920 1313) yesterday for $11. Same price that empirefoam quotes but my $11 purchase became $21 with shipping. You should order both the gear kit and the seal kit, and the shipping would probably the same for both items.