The ceiling appears to be slat and plaster - I know the walls are because I have replaced damaged portions. The porcelain socket appears to be attached WITHOUT a junction box. Could this be right? If so, do I need to install a junction box in order to install a flush ceiling light? If I cut through the slats, how will I attach the junction box?
Get a metal box about 2-1/2 x 3-1/2 inches at the front and with tabs on the ends of the opening to screw it to the wall.
Mount the box across the slats. cUT Onw aalalasllslatr slat all the way through and cut the slats on each side halfway through which should leave a hole big enough to put the box in and the tabs are screwd onto the slats cut halfway thorough.
The good conscientious technician or serviceperson will carry extra oils and lubricants in case the new pump did not come with oil or the oil was accidentally spilled, so the service call can be completed without an extra visit.