To remove Pump from a Graco 390 PC or other PC Models, you will simply be disconnecting the fluid Outlet and inlet and remove the pump. Here are steps by step procedure
1
Loosen the retaining nut with a hammer .
2
To free the pump rod cover, continue to loosen the retaining nut.
3
Open the pump rod cover by lifting or swinging it out.
4
Remove the suction hose from pump and disconnect the outlet hose see image below.
5
Slide out the pump from housing.