D14 transmission
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=163413
Printed Date: 14 Jul 2025 at 11:50pm
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Topic: D14 transmission
Posted By: gregjo1948
Subject: D14 transmission
Date Posted: 06 Aug 2019 at 6:38am
| What other AC tractors use the same trans. as a D14? (Serial # D14 9562) Mine is jumping out of 3rd gear. I'd also be interested in which gears (part #s) would be needed to repair the problem. I'd be interested in buying a cheap parts tractor with the correct trans. in good shape. Within 150 miles of 13811. thank you all, gregjo1948 |
Replies:
Posted By: DougS
Date Posted: 06 Aug 2019 at 6:50am
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It won't be the gears since it's a constant mesh transmission. The dogs are probably worn. It could be a bearing too. Replacing the transmission with another used transmission may only be replacing the problem of one transmission with that of another. Expect to do a complete overhaul and it won't be cheap. |
Posted By: gregjo1948
Date Posted: 06 Aug 2019 at 8:00am
I removed the trans side cover with the shifting forks. I heated and tweaked the 3rd/2nd gear fork a tiny bit. This resulted in it staying in 3rd gear but, popping out of 2nd gear. Obviously, 2nd and 3rd speeds are shifted by the same fork. This leads me to believe it's not a bearing problem. When you say "dogs" are you referring to the "nubs" that are part of the gears? If so, then, I would think by replacing the 2 gears, related to the 3rd gear popping out problem, that should solve it. By looking in the trans., I can see the rounded/worn gears that I believe to be the problem. If I were to buy a used trans., I'd pull the cover off and check the condition of those gears. Your thoughts??? thanks, gregjo1948 |
DougS wrote:Posted By: jaybmiller
Date Posted: 06 Aug 2019 at 8:33am
|
'somewhere' long time ago, there were GREAT pictures posted of what goes wrong... I seldom get into 3rd but I know 1 of the 3 here is fine.others will pop out... they end to pop out when you let up on the gas or slow down or go down a hill, never under load. I recall new parts are over 1000 greenbacks ! hopefully someone can locate the pictures.... Jay ------------- 3 D-14s,A-C forklift, B-112 Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |
Posted By: Jim.ME
Date Posted: 06 Aug 2019 at 6:13pm
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You can log in as a guest user at the AGCO parts book site and use the on line parts catalog for the D14 to find your part numbers. With those numbers you can do web searches for what you need. Some of the vendors that advertise here maybe able to help you with the parts. https://apb.agcocorp.com/login.aspx?region=NorthAmerica%20" rel="nofollow - AGCO Parts Books |
Posted By: CTuckerNWIL
Date Posted: 06 Aug 2019 at 6:21pm
The splines on the gear aren't the only thing that wears. The sliding collar that your fork fits on, will be as bad inside, as the gear hub spline. When I did my 45, I replaced all the thrust bearings and washers, because they wear, making it necessary to "shift" further to get the same engagement area on the spline. ------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Posted By: rtwfarm
Date Posted: 06 Aug 2019 at 6:45pm
| Wish you were closer just got a d14 in with good transmission |
Posted By: rtwfarm
Date Posted: 06 Aug 2019 at 6:46pm
| Wish you were closer just got a d14 in with good transmission here in Nebraska |
Posted By: john(MI)
Date Posted: 07 Aug 2019 at 1:52am
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Go over to the knowledge base section and look around. I found this over there. https://www.allischalmers.com/forum/usual-jumping-out-of-3rd-gear_topic115013.html" rel="nofollow - https://www.allischalmers.com/forum/usual-jumping-out-of-3rd-gear_topic115013.html ------------- D14, D17, 5020, 612H, CASE 446 |
Posted By: darrel in ND
Date Posted: 07 Aug 2019 at 5:50am
I sent you a PM Darrel |
Posted By: Jim.ME
Date Posted: 07 Aug 2019 at 6:35am
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gregjo1948, Here are the few pages on the transmission, from the D14 service manual, which may help you decipher things. uploads/16335/D14_Transmission_service.pdf" rel="nofollow - D14_Transmission_service.pdf |
Posted By: Bill Long
Date Posted: 07 Aug 2019 at 10:38am
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If you are going to do transmission work might as well replace the shifting collar. If the gears were damaged they were too. Good Luck! Bill Long
|
Posted By: gregjo1948
Date Posted: 07 Aug 2019 at 1:39pm
| Thank you all for your replies. I pulled the side cover off and moved the detent about 3/16" and it seems to be fine. Anything I tried wouldn't get it to pop out of gear. gregjo1948 |
Posted By: gotamap
Date Posted: 07 Jan 2020 at 8:26am
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Do you still have a good D14 transmission?? Thanks Kyle |