Massey 85 powersteering pump issues

[JJL]

I am having problems with the powersteering pump on my 85. I took it apart and cannot see anything visually wrong. There are no damaged teeth or wear marks on anything. If I put the pump in a pail of oil and spin by hand, oil squirts out, but when it is installed I have not oil pressure in the lines at all. Any ideas on what to look at?

 

[petebac]

If yours is like the one on my 65 there are 2 small gears inside one has a keyway the other has a shear pin. On mine the shear pin broke. Hopefully thats the problem.

 

[MHF]

on the underside of pump there is a threaded plug that is held from turning by a small roll pin. remove roll pin. turn plug out to remove count the turns. there will be a spring and a valve and body. remove valve with body it is probably stuck. once you get the valve unstuck clean and polish untill it moves freely in body and reinstall

 

[JJL]

MHF..... THANK YOU!! This was the problem. In fact, I had a second pump on the shelf from about 12 years ago that did not work. I pulled the valve body from that one and fixed that one too!