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3 Point slow to lift before and after rebuild-NAA

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Author 
Neal

04-28-2001 08:12:20




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I just replaced the cam follower pin and the seals on the piston, along with the O rings of my 3 point on a NAA. Before I did this, the rear blade would only go up 8 inches, and then was slow at going up. It would not work at all in cold weather. Now the blade goes up to 16 inches and holds fairly well. (it dropped less than 2 inches in an hour)
After the rebuild, and finding the blade goes up slow (takes 5 to 6 seconds to go from the ground to a lift of 16 inches) I removed the inspection cover and could see no bubbles or movement of the oil in the resevoir while the blade was lifting.
I am assuming because of no oil leaking inside, everything I did when I had the cover off is OK. All of the valves were clean and moved freely. Could I have a pump problem in that it is not delivering the oil fast enough or is low on pressure? How and where do you attach a guage to the pump to measure its output pressure, and what should the output pressure be? Could there be someting I overlooked when I had it apart?

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