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lumaro 
Bronze Level
Joined: 29 Oct 2013
Location: Poynette Wi
Points: 7
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 Topic: D17 Start tractor up hydraulics go up
Posted: 07 Aug 2017 at 3:27am |
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Hi i have a 1964 D17 Allis The problem is when I start the tractor up the hyd start going up it will keep going full psi, it blow one on the cylinders for the bucket it will not come down. l I have back the down speed control all the way off also the traction and the hyd control are not working right do I have a pump prob.
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DiyDave
Orange Level Access
Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 54756
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Posted: 07 Aug 2017 at 4:43am |
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Check the linkages, then the pump...
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DrAllis
Orange Level Access
Joined: 12 Sep 2009
Points: 22369
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Posted: 07 Aug 2017 at 7:21am |
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Sounds like a one-way loader with a trip bucket???????????? Be nice to have good information. I'd be thinking traction booster linkage underneath the belly is bent or disconnected causing the pump (Pre-series 4) to pump all the time.
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DSeries4
Orange Level
Joined: 12 Sep 2009
Location: Ontario, Canada
Points: 7580
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Posted: 07 Aug 2017 at 9:42am |
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Yep, need to know if it is a series IV or not. I suspect it is a linkage issue.
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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Lonn
Orange Level
Joined: 16 Sep 2009
Location: Назарово,Russia
Points: 29819
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Posted: 07 Aug 2017 at 3:41pm |
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I had my WD hydraulic lift go up and not want to come back down immediately upon start up and it turned out to be a broken spring stuck in a spool inside the pump. Similar pump to the D17 Series I, II and III. SeriesIV is different.
Edited by Lonn - 07 Aug 2017 at 3:42pm
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JC-WI
Orange Level Access
Joined: 11 Sep 2009
Location: wisconsin
Points: 34440
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Posted: 07 Aug 2017 at 7:14pm |
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Lumaro talks about loader bucket cylinder...
...so I think he has separate control valve for the loader and running the D17's pump through it... and the pump is pumping all the time so... I think he has either control valve unloading valve issue or the pump linkage is disconnected... or the traction booster linkage is bent, but the lift/lower control in lower position would relief the traction booster too so back to the lift/lower not functioning... just my guess.
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