Farm Equipment - D17 series 2 hydraulics

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D17 series 2 hydraulics

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=194666
Printed Date: 13 Nov 2025 at 2:07am
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Topic: D17 series 2 hydraulics

Posted By: CE Mississippi
Subject: D17 series 2 hydraulics
Date Posted: 17 Apr 2023 at 12:59pm

When I crank the tractor the hydraulics go up and will not let down. I even have a disc connected with the hydraulic cylinder on it and it will not lower. Thanks

Replies:

Posted By: DrAllis
Date Posted: 17 Apr 2023 at 1:50pm

BOTH hydraulic levers on the steering column must be DOWN and horizontal. Next thing would be see if the linkage from the snap coupler bell is missing or badly bent under the belly/under the brake pedal area.

Posted By: CE Mississippi
Date Posted: 20 Apr 2023 at 8:22am

All that is good I’ve replaced hydraulic pump from another d-17 and it does same thing. Goes up but won’t go down. You can loosen return hose and cylinder will go down.

Posted By: DrAllis
Date Posted: 20 Apr 2023 at 8:47am

If you've replaced the pump, you had to disconnect the linkage under the belly of the tractor, correct ????????? Or is there no linkage under the belly to connect to the hydraulic pumps sump ???

Posted By: CE Mississippi
Date Posted: 20 Apr 2023 at 9:30am

There is linkage to the booster rod

Posted By: DrAllis
Date Posted: 20 Apr 2023 at 9:36am

Loosen the front nut and move it FORWARD at least 1/2". Move the rear nut forward until tight. Report back.

Posted By: CE Mississippi
Date Posted: 20 Apr 2023 at 10:02am

It is adjusted all the way forward and now it works. Thank yousir. I wish I had asked you before I took the pump off 3 times and replaced it. LOL

Posted By: CE Mississippi
Date Posted: 20 Apr 2023 at 10:50am

It is adjusted all the way forward and now it works. Thank yousir. I wish I had asked you before I took the pump off 3 times and replaced it. LOL