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D14 transmission
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gregjo1948 View Drop Down
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Joined: 23 Jun 2019
Location: Newark ValleyNY
Points: 13 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gregjo1948 Quote  Post ReplyReply Direct Link To This Post Topic: D14 transmission
    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
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DougS View Drop Down
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Joined: 03 Nov 2011
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Points: 2490 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DougS Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2019 at 6:50am
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.
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gregjo1948 View Drop Down
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Joined: 23 Jun 2019
Location: Newark ValleyNY
Points: 13 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gregjo1948 Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2019 at 8:00am
Originally posted by DougS DougS wrote:

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.



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   
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jaybmiller View Drop Down
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 24555 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jaybmiller Quote  Post ReplyReply Direct Link To This Post 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
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Jim.ME View Drop Down
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Joined: 19 Nov 2016
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Points: 962 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Jim.ME Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2019 at 6:13pm
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.


AGCO Parts Books
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CTuckerNWIL View Drop Down
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Joined: 11 Sep 2009
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Points: 22824 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CTuckerNWIL Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2019 at 6:21pm
Originally posted by gregjo1948 gregjo1948 wrote:




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   


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
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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rtwfarm View Drop Down
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Joined: 26 Feb 2012
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Points: 1317 		Post Options Post Options   Thanks (0) Thanks(0)   Quote rtwfarm Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2019 at 6:45pm
Wish you were closer just got a d14 in with good transmission
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rtwfarm View Drop Down
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Joined: 26 Feb 2012
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Points: 1317 		Post Options Post Options   Thanks (0) Thanks(0)   Quote rtwfarm Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2019 at 6:46pm
Wish you were closer just got a d14 in with good transmission here in Nebraska
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john(MI) View Drop Down
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Joined: 12 Sep 2009
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Points: 9262 		Post Options Post Options   Thanks (0) Thanks(0)   Quote john(MI) Quote  Post ReplyReply Direct Link To This Post Posted: 07 Aug 2019 at 1:52am
Go over to the knowledge base section and look around.  I found this over there.
D14, D17, 5020, 612H, CASE 446
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darrel in ND View Drop Down
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Joined: 22 Nov 2009
Location: Hebron, ND
Points: 8700 		Post Options Post Options   Thanks (0) Thanks(0)   Quote darrel in ND Quote  Post ReplyReply Direct Link To This Post Posted: 07 Aug 2019 at 5:50am
Originally posted by rtwfarm rtwfarm wrote:

Wish you were closer just got a d14 in with good transmission here in Nebraska

I sent you a PM Darrel
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Jim.ME View Drop Down
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Joined: 19 Nov 2016
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Points: 962 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Jim.ME Quote  Post ReplyReply Direct Link To This Post Posted: 07 Aug 2019 at 6:35am
gregjo1948,

Here are the few pages on the transmission, from the D14 service manual, which may help you decipher things.

D14_Transmission_service.pdf
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Bill Long View Drop Down
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Joined: 12 Sep 2009
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Points: 4556 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Bill Long Quote  Post ReplyReply Direct Link To This Post Posted: 07 Aug 2019 at 10:38am
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
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gregjo1948 View Drop Down
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Joined: 23 Jun 2019
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Points: 13 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gregjo1948 Quote  Post ReplyReply Direct Link To This Post 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
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gotamap View Drop Down
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Joined: 07 Jan 2020
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Points: 1 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gotamap Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jan 2020 at 8:26am
Do you still have a good D14 transmission??

Thanks
Kyle
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