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Tractor Talk Discussion Forum

Long 510 3 pt lift

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uncle

04-23-2008 15:41:28




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I have a Long 510 and the 3 point will not lift. It has the same setup that some of the Fords had where the top link on the tractor has 3 positions and a big leaf spring. I noticed that the spring is bent forward to where you cannot pull the pin out without hitting the spring.
Do I need to pull this out a little? Is there a relief valve connected to this?
All help welcome.
Brian




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geok

04-23-2008 18:18:05




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 Re: Long 510 3 pt lift in reply to uncle, 04-23-2008 15:41:28  
The original top link pin was very short with a flat strap welded at an anle to clear leaf spring. I regular short top link pin will work if you grind a flat side on the head to clear spring. Some times when the lift does not respond at all it is because of a large check valve sticks open. This valve is located just under the seat under a hex plug. Use a 1 1/16 wrench to remove this plug then remove spring and large hollow valve. Clean valve nad bore then reinstall. Hope this helps.

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KEH

04-23-2008 17:56:01




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 Re: Long 510 3 pt lift in reply to uncle, 04-23-2008 15:41:28  

The big leaf control is part of the draft control. Best to leave it alone. Don't think it is connected with your problem. Are the remotes working? There is a control under the seat that changes from draft control to position control. Check operators manual. I don't think that is the problem. Possibly the cylinder for the 3ph which is under the seat has bad o rings. Look at simple things first, like cleaning or changing the hydraulic filter and checking the hydraulic oli level. If your tractor is older, it has a wire mesh filter in line near the starter. It is supposed to be cleaned occasionally. If it has gotten clogged up, it is probably best to replace it. If the tractor is a newer type, it has a spin off throw away filter.
There are some copper crush washers in the system which can give trouble. You need advice from a long mechanic on replacing those. The 3ph control lever has an awkward linkage which bears on a lever with a roller on the end which goes into the hydrailic control module. If you could reach in there and move the lever you can see it that moves the 3ph arms. There is a spring in there which returns the lever to position. When it breaks it can cause problems but I don't recall the symptoms. Be careful if you take the 3ph lever off, you have to arrange a bunch of weird shaped connections just right to reassemble.

Finally, in the worst case, the whole control mechanism under the seat may need replacing. It's expensive new if availiable. Another bad possibility is that the hydraulic pump is bad which is why I asked if the remotes were working.

Sorry for rambling on, trying to cover everything.

KEH

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Bus Driver

04-23-2008 16:44:45




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 Re: Long 510 3 pt lift in reply to uncle, 04-23-2008 15:41:28  
Search for this topic on the forum for Orphans and Oddballs, also know as Lesser Known Classics.



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