Probably a waste of time, but you may try seating the ball into the seat with a hammer and brass drift IF you are certain that you have replaced the old one with the correct sized ball. I always use a different ball to seat the seat than the one that I plan to install.
Are you CERTAIN that the lift piston is not leaking?
Re: NAA Hydraulic Check Valve Seat in reply to Dean, 01-04-2013 06:57:32
I am certain the lift piston is not leaking. I replaced all the orings, gaskets, and follower pin last weekend. I took out all the plugs and sprayed all passages and small holes with brake cleaner. I made all adjustments according to the I&T manual. I even had a friend machine a Nuway tool gauge for setting the lift. All works great.
Re: NAA Hydraulic Check Valve Seat in reply to cac63, 01-04-2013 07:07:48
Quoting Removed, click Modern View to see4 potential leak spots for situation that you describe & you seem certain to have eliminated at least the ram lift cylinder. Other 3 are check valve, ram cylinder safety valve, and control valve.
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