Farm Equipment - D14 Gears jumping out

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D14 Gears jumping out

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=190815
Printed Date: 06 May 2024 at 12:43pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: D14 Gears jumping out

Posted By: John426
Subject: D14 Gears jumping out
Date Posted: 21 Sep 2022 at 7:16am

On my D14, I had the problem of the 3rd gear jumping. I modified this by shifting the lockout by 0.1". This solved the problem. But now downhill I have a noise that sounds like a friction noise or a slight snagging of a gear pinion.

How to fix this problem and what is the origin?

This jumping out problem is common to the D10, D12, D14, ED40, and other models such as the 180 series

Replies:

Posted By: DrAllis
Date Posted: 21 Sep 2022 at 7:20am

Only in third gear going downhill ?? or makes the noise in any other gear too ??

Posted By: John426
Date Posted: 21 Sep 2022 at 7:22am

it is only in third gear , after making the modification to fix jumping out problem

Posted By: DrAllis
Date Posted: 21 Sep 2022 at 7:25am

So, you have to make a management decision. Leave it the way it is (staying in gear going downhill with a noise) or change it back to jumping out of gear and no noise. Kind of a no-brainer for me. Make sure it's full of trans oil to keep that shift fork well lubed.

Posted By: John426
Date Posted: 21 Sep 2022 at 7:29am

OK . Do you know if there a stronger spring shift rod detent to put

Original is Ref 70207770

Posted By: DrAllis
Date Posted: 21 Sep 2022 at 7:44am

I always use a 70229458 spring from a D-17 hand clutch and shove it inside the existing detent spring. I also make a second detent utilizing the neutral spring/ball so two properly timed detents lock it into gear.

Posted By: Alex09(WI)
Date Posted: 21 Sep 2022 at 11:45am

When you moved the detent on 3rd gear shift rail, you prolly moved it enough so 3rd gear meshes with or is bumping the reverse idler gear.

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Posted By: DrAllis
Date Posted: 21 Sep 2022 at 11:59am

Which on D-15's is a very common noise when running third gear. Kind of a growling noise and only when in third. D-14's that reverse gear is a little narrower so it might be just kissing it now.

Posted By: John426
Date Posted: 21 Sep 2022 at 12:28pm

So , if it is bumping the reverse idler gear.

Can I think that this noise should not worry me and does not present any risk for the gearbox and the various gears?

Posted By: DrAllis
Date Posted: 21 Sep 2022 at 12:42pm

I think you'll be fine.

Posted By: Jack(Ky)
Date Posted: 28 Sep 2022 at 7:51am

I moved mine .090" about 15 years ago with no noise or other problems. I have done others with no problems. Sounds like it's going a little too far.

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'59 D14 '68 170 Diesel '81 7020 40 All Crop