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7045 3 Point won’t raise |
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Tbone95 ![]() Orange Level Access ![]() ![]() Joined: 31 Aug 2012 Location: Michigan Points: 12132 |
![]() ![]() ![]() ![]() ![]() Posted: 20 Jul 2025 at 4:08pm |
Tractor had been sitting a couple weeks. Started up, raised the load on the 3 point no problem. A bit later lowered it then went to raise it and no response at all.
All other hydraulic functions still work fine. Finally got the implement unhooked and the tractor moved away from it and arms still won’t raise. You can manually lift them then when you let go they drop again. Last few inches of drop they slow down. Power Director if that matters. |
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8070nc ![]() Orange Level Access ![]() Joined: 21 Mar 2019 Location: North Carolina Points: 598 |
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I can think of 4 possibilities. Control cable broke from the position control handle to the valve. The lever that mives the spool slipped past the end of the spool. Not likely. Ive never seen it on a 7/8000 series. Hose to the internal cylinder is busted or the cylinder is busted. I had the internal cylinder on a 8070 go bad one time
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1984 80780
1957 D14 DES 300 with 25000 engine 616 tractor |
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Lynn Marshall ![]() Orange Level Access ![]() ![]() Joined: 13 Sep 2009 Location: Dana, Iowa Points: 2367 |
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Lube the pivot points in the linkage behind the cab.
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Tbone95 ![]() Orange Level Access ![]() ![]() Joined: 31 Aug 2012 Location: Michigan Points: 12132 |
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Lynn, not to discredit that thought, but why would it work perfectly, then 2 minutes later not work at all? And would I still be able to lift it by hand like I do if the pivots needed lube that badly??
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8070nc ![]() Orange Level Access ![]() Joined: 21 Mar 2019 Location: North Carolina Points: 598 |
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Tbone Im pretty sure hes talking about the control linkage. All those rods and pivot points. Thats a good place to start. May be all your trouble is
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1984 80780
1957 D14 DES 300 with 25000 engine 616 tractor |
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Tbone95 ![]() Orange Level Access ![]() ![]() Joined: 31 Aug 2012 Location: Michigan Points: 12132 |
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Lynn Marshall ![]() Orange Level Access ![]() ![]() Joined: 13 Sep 2009 Location: Dana, Iowa Points: 2367 |
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It's not the easiest, but you should be able to see the linkage move the spool into the valve body from behind. It should lift at that time as long as the pressure is correct and it doesn't have a massive internal leak. Be careful back there in case the three point decides to raise. You don't want to get caught between the arms and the cab.
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8070nc ![]() Orange Level Access ![]() Joined: 21 Mar 2019 Location: North Carolina Points: 598 |
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You could have someone move the lever in the cab while you look a the spool with the engine off so theres no chance of getting hurt. If that spool is pushing in and coming back out you almost certainally have a internal leak
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1984 80780
1957 D14 DES 300 with 25000 engine 616 tractor |
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