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Sorry for the 3 year delayed response! I'm just seeing your comment now for some reason. No it has not been fixed. It's been gradually getting worse and now the tractor has about 1000 hours on it. I can still do everything I need to do with the tractor so I decided to put off the repair until it...

Does anyone know of a good site to cross reference website for hydraulic lift control valves? I'm looking to rebuild New Holland hydraulic lift/control valve part # MT40007577 (LS Part #40250285). I have been able to cross reference some parts on New Holland tractors but I haven't had any luck...

I looked for manual online. May have to get from dealer

Thanks. The problem didn't get bad until I got over 600 hours. I was trying to avoid putting in a new one but looks like I don't have a choice. I called the mechanic at dealer and he said to take it apart and clean it- which I have no idea how hard that job would be for a youtube amatuer...

Did they put a new valve in or rebuild yours? Does anyone know if there is a rebuild kit from LS?

Thanks. Do I need to order from dealer? Will I have to change the fluid to replace them?

I have around 600 hrs on the tractor and over time the 3 point arms started to leak down while tractor is running. At first about every 30 seconds the implement would jump back up and gradually over time its happening every few seconds (after tractor is hot). I can turn the valve under the seat...