Farm Equipment - AC 200 Shift plate assembly

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AC 200 Shift plate assembly

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=138565
Printed Date: 28 Dec 2025 at 3:43pm
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Topic: AC 200 Shift plate assembly

Posted By: MYAC200
Subject: AC 200 Shift plate assembly
Date Posted: 19 May 2017 at 7:19am

Good morning,

I have a problem getting the shift plate back on after changing the forks to fix the problem of slipping out of 3rd gear. My issue is that when the plate is back on, unable to shift into gears. Any ideas what the issue is? I believe the forks are in the proper position when it's bolted back on, but the shifter will not go into gear?

Replies:

Posted By: DrAllis
Date Posted: 19 May 2017 at 7:25am

Shift cover AND THE TRANSMISSION must be in second gear. Be sure to install special dowel bolts in left front and right rear corners when sitting in the seat.

Posted By: MYAC200
Date Posted: 19 May 2017 at 7:45am

Dr Allis,

What not havaing the dowell bolts cause the shifter not to be able to shift?

Posted By: DrAllis
Date Posted: 19 May 2017 at 7:46am

I doubt it.

Posted By: MYAC200
Date Posted: 19 May 2017 at 8:25am

Using the 2nd gear position, we can get the shift plate on, in place and bolted with what looks like the correct fork position, but then the tractor still won't shift? Any other known issues that we could try?

Posted By: DrAllis
Date Posted: 19 May 2017 at 9:09am

If the cover shifts into ALL positions while clamped in a vise, you aren't getting the forks aligned with the shifting collars when you set it on the tractor. Rotate the trans gears so that if the 3rd/4th collar gets bumped it cannot move either way. Make sure reverse idler is rearward. Don't use any kind of line-up dowel. Just set it on and it will find it'd way into place.

Posted By: MYAC200
Date Posted: 19 May 2017 at 11:47am

ill try that. thanks