[Vwdiesel] horizontal windshield washer pump

[Doug & Pam]

I know I've asked before but does anyone know where I can get a new or used
horizontal mounted windshield washer pump that works?

 

The one I have, runs but only puts foam into the hose. I can use a vertical
setup if I can come up with a way to secure the reservoir inside the fender.
The reservoir I have is secured with a large plastic nut that tightens onto
a plastic stud at the top of the reservoir. Were there any vertical pump
reservoirs that were secured with the plastic nut? Apparently, these were
only installed for a short time in the 1981 model year. I have two of them!
I've tried soaking the pump in vinegar to clean it out but did not get any
improvement in pumping action.