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D17 Hydraulic lift arm pump
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Joined: 12 Mar 2020
Location: Waverly
Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Cob jobber Quote  Post ReplyReply Direct Link To This Post Topic: D17 Hydraulic lift arm pump
    Posted: 12 Mar 2020 at 7:14am
Hiya all
My pump relief valve starred knocking last year..and so I thought the hold lever perhaps was not all the way down etc.. (in fact that did correct the problem initially) But since then the pulp continued to do the same thing...now the pump is basically always on..
I've looked over the linkage and had the pump out a time or two..
I've even had the pump apart..and back together. .same thing..always on..
I'm wondering what knowledgeable hands might know about this..
Thank you
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Joined: 12 Sep 2009
Points: 21716 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2020 at 7:18am
Traction Booster linkage under the belly missing or not adjusted properly.
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Joined: 17 Nov 2009
Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2020 at 7:24am
Are the lift arms always up? If they are, I would guess traction booster linkage needs adjusted.           MACK
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Cob jobber Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2020 at 7:25am
I wI will mess around with it.. (all the parts for the traction booster are there)
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Joined: 12 Sep 2009
Points: 21716 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2020 at 7:26am
The Owners manual explains how to adjust that linkage to the proper setting.
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Cob jobber Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2020 at 7:27am
Yes..the lift arms are always jammed up..
I actually took the pump out last summer..beings that I didn't think it was a great thing having the relief valve screaming all the time
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Joined: 17 Nov 2009
Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2020 at 7:51am
If linkage is ok, I would say a spool valve is sticking.      MACK
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Cob jobber Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2020 at 7:44pm
When I had the pump apart..the spool valves had to be tapped out
Notsure the best way to free em up
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Cob jobber Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2020 at 7:45pm
Perhaps some new o rings
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Cob jobber Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2020 at 7:46pm
Perhaps some new o rings
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Cob jobber Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2020 at 7:47pm
Does anyone here have a diagram, they could spare?
I have the book..but it's not too clear
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Joined: 17 Nov 2009
Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2020 at 9:22pm
Put spools in drill press or lathe and polish with emery clothe.     MACK
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Cob jobber Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2020 at 10:32pm
Ok..I'lltry that. .lightly of course. .
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Points: 21716 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 13 Mar 2020 at 7:24am
Yup. Go ahead and take that pump out one more time  !!!    You haven't acknowledged properly adjusting the Traction Booster linkage underneath the tractor, which takes all of 5 minutes.
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