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alan1959 
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Joined: 15 May 2016
Location: Avoca, Michigan
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 Topic: D17 Lift arm problem
Posted: 30 May 2016 at 4:21pm |
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I have recently gotten a D17 I believe a series IV and the lift arms will lift a mower and a 9' rear blade but will not lift my plow. The arms do drift down very slowly. I am thinking the internal lift cylinder packing/seals and or the hose going to the cylinder. Did the hose and cylinder when I was a kid on our D15 series II with my dad. Don't remember a whole lot about it. Is it a horrible job to do if that is the problem? Any help would be greatly appreciated!
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den/southern illinoi
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Joined: 11 Sep 2009
Location: Sparta, Illinoi
Points: 2059
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Posted: 30 May 2016 at 4:36pm |
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I thought the lift cylinders on a Series 4 were on the outside. Are the hydraulic controls on the right hand side of the tractor or behind the steering wheel? If behind, then it is not a series 4. Den
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Own 4 wheel 20, 2-5015, 5020 and associated equipment and 2 electric forklifts.
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housemover
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Joined: 01 May 2012
Location: Belleville, Ks
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Posted: 30 May 2016 at 4:56pm |
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Series IV D-17 Hyd cylinders (plural there was one on each side) were on the outside!
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housemover
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Posted: 30 May 2016 at 5:01pm |
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Forgot to ask in the other post where's the traction booster lever located during all of this (up, down, or in the middle)?
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alan1959
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Posted: 30 May 2016 at 5:19pm |
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OK, from the descriptions this must be a series III. The lift lever is under the traction booster lever which is in the lowest position. There is a control valve/lever on left rear by the remotes.
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Play Farmer
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Location: NNY
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Posted: 30 May 2016 at 8:00pm |
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Sounds like what mine was doing, before it quit entirety. As you mentioned, mine need both a new internal hose and the elbow was cracked.
It's an easy job too. Took maybe 2-3 hours, and that was going slow taking my time as I had never been in one.
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MACK
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Posted: 30 May 2016 at 10:25pm |
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If it is hose or cylinder, rear end dip stick will be showing over full. Sounds more like a weak pump . MACK
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alan1959
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Posted: 31 May 2016 at 7:32pm |
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Tried using remote hydraulic connection on 10' transport discs. It lifted them no problem. And they stay up no drift. So I don't think pump is the problem. Yet the lift arms when raised do drift down. Really leaning on the lift arm cylinder and or hose. Any more thoughts? I really appreciate any responses!
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DrAllis
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Posted: 31 May 2016 at 7:40pm |
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You say there is "a control valve/lever on the left rear by the remotes". Remotes to me means more than one coupler, and a D-17 of that age only has one coupler, not two. So, I think you have an operational problem, a two-way valve and/or the previous owner has it plumbed up wrong. If you aren't losing hydraulic fluid and gaining transmission oil, there isn't a problem with a hose or seals internally !!! A picture would be very helpful.
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alan1959
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Posted: 01 Jun 2016 at 6:20pm |
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The control valve lever I mentioned in an earlier post is the transport valve. Sorry our D15 didn't have one. I am learning! Hooked into the other quick disconnect and tried lifting discs (10' transport) and it works great. Just the lift arms wont lift the plow up more than a couple inches. I am thinking still the pump is fine or it wouldn't lift the discs. Maybe I am wrong. Will post a couple pics tomorrow.
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MACK
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Posted: 01 Jun 2016 at 10:53pm |
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A transport valve does not have a lever on it. It only has a knob. MACK
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DrAllis
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Posted: 02 Jun 2016 at 7:34am |
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"I hooked into the other quick disconnect and tried lifting 10 ft discs and it worked great". There is only ONE quick disconnect(coupler) on a D-17, unless there has been another valve added. DOES YOUR DISC HYDRAULIC CYLINDER HAVE TWO HOSES OR ONE HOSE????????????????
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alan1959
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Posted: 02 Jun 2016 at 4:49pm |
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1 hose. Sorry, this tractor different than the D15 we have.
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alan1959
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Posted: 02 Jun 2016 at 4:50pm |
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There are 2 disconnects on a valve with lever. To the right is a single disconnect. I think someone put the second one on the left, not sure.
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DrAllis
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Posted: 02 Jun 2016 at 4:54pm |
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Now, that we have established there actually is an "added-on two-way valve" (non-factory), how do you make your lift arms raise??????? Are you activating this lever on the added-on valve and then the arms lift up??
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alan1959
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Posted: 02 Jun 2016 at 6:44pm |
Problem Solved!!!! The hose was hooked to the disconnect on the right. So I unplugged it and just plugged in to the middle disconnect, just to keep it clean and it works perfect! Thanks so much to everyone for their time and effort!!  
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