D17 Lift arm problem
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=123936
Printed Date: 03 Nov 2025 at 10:26pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: D17 Lift arm problem
Posted By: alan1959
Subject: D17 Lift arm problem
Date Posted: 30 May 2016 at 4:21pm
| 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! |
Replies:
Posted By: den/southern illinoi
Date Posted: 30 May 2016 at 4:36pm
|
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 ------------- Own 4 wheel 20, 2-5015, 5020 and associated equipment and 2 electric forklifts. |
Posted By: housemover
Date Posted: 30 May 2016 at 4:56pm
| Series IV D-17 Hyd cylinders (plural there was one on each side) were on the outside! |
Posted By: housemover
Date Posted: 30 May 2016 at 5:01pm
| Forgot to ask in the other post where's the traction booster lever located during all of this (up, down, or in the middle)? |
Posted By: alan1959
Date Posted: 30 May 2016 at 5:19pm
| 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. |
Posted By: Play Farmer
Date Posted: 30 May 2016 at 8:00pm
|
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. |
Posted By: MACK
Date Posted: 30 May 2016 at 10:25pm
| If it is hose or cylinder, rear end dip stick will be showing over full. Sounds more like a weak pump . MACK |
Posted By: alan1959
Date Posted: 31 May 2016 at 7:32pm
| 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! |
Posted By: DrAllis
Date Posted: 31 May 2016 at 7:40pm
| 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. |
Posted By: alan1959
Date Posted: 01 Jun 2016 at 6:20pm
| 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. |
Posted By: MACK
Date Posted: 01 Jun 2016 at 10:53pm
| A transport valve does not have a lever on it. It only has a knob. MACK |
Posted By: DrAllis
Date Posted: 02 Jun 2016 at 7:34am
| "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???????????????? |
Posted By: alan1959
Date Posted: 02 Jun 2016 at 4:49pm
| 1 hose. Sorry, this tractor different than the D15 we have. |
Posted By: alan1959
Date Posted: 02 Jun 2016 at 4:50pm
| 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. |
Posted By: DrAllis
Date Posted: 02 Jun 2016 at 4:54pm
| 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?? |
Posted By: alan1959
Date 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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