Farm Equipment - D17 P.D.

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D17 P.D.

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=8593
Printed Date: 19 Jan 2025 at 11:58am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: D17 P.D.

Posted By: JimNEIN
Subject: D17 P.D.
Date Posted: 24 Feb 2010 at 6:33pm

It won't stay in high range unless you hold it in for 15 or20 seconds.Usually after it warms up it's ok.Is this just a matter of taking some shims out? Thanks.

Replies:

Posted By: DrAllis
Date Posted: 24 Feb 2010 at 7:12pm

Remove the high side "stop bolt" and see if that helps. Generally "shimming" of the PD clutch is a process of tightening it, which will make the popping out even worse. The ramp plate pockets and rollers are worn causing it to not quite go over center, which is what locks it in. The reason it does it only when cold, is because you are squeezing out the cold oil (which makes the clutch tighter....like shimming does), once the oil is squeezed out, then it stays engaged. The ramps/rollers are good for so many thousands of "snaps" and they start to wear, causing the trouble. Won't hurt to run it....just an inconvienience.

Posted By: jrjuday
Date Posted: 24 Feb 2010 at 7:25pm

Also, check the set-screw that secures the P-D handle to the shaft at the bottom. It should be tight with no free-play between lever and shaft.