In Reply to: Re: NAA lift won't move posted by Kevin on April 29, 2017 at 14:39:09:
Well, I put a gauge on the jack tapping plug and actually got a reading. Few hundred PSI when I attempted to run the lift up. Tried again, pressure valve seems lower. After several tries, I'm not hitting even 100 PSI.
Then I took off the filler cap and could hear and see oil jetting out beyond the ram cylinder. It was too bright to see for sure but it looked like it was coming out of the control valve. A 1/2" diameter stream directed toward the back of the tractor.
I ordered a back-pressure valve off ebay. It appears to also be stuck open.