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7045 3 Point won’t raise
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Tbone95 View Drop Down
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Joined: 31 Aug 2012
Location: Michigan
Points: 12132 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tbone95 Quote  Post ReplyReply Direct Link To This Post Topic: 7045 3 Point won’t raise
    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 View Drop Down
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Joined: 21 Mar 2019
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Points: 598 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 8070nc Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2025 at 10:35am
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
1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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Lynn Marshall View Drop Down
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Points: 2368 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Lynn Marshall Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2025 at 12:55pm
Lube the pivot points in the linkage behind the cab.
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Tbone95 View Drop Down
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Points: 12132 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tbone95 Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2025 at 3:55pm
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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Points: 598 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 8070nc Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2025 at 6:36pm
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
1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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Tbone95 View Drop Down
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Joined: 31 Aug 2012
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Points: 12132 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tbone95 Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2025 at 7:05pm
Originally posted by 8070nc 8070nc wrote:

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
ok I’ll certainly check it out. Thanks guys. I was just trying to develop an understanding.
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Lynn Marshall View Drop Down
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Joined: 13 Sep 2009
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Points: 2368 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Lynn Marshall Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2025 at 8:20pm
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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Joined: 21 Mar 2019
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Points: 598 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 8070nc Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2025 at 9:08pm
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
1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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