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Allis Chalmers Discussion Forum

D14 transmission locked

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Scott Daniels

09-02-2004 21:21:01

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Hi,

I just bought a D14, and everything was fine except for slipping out of 2nd & 3rd gears. I tried to attach an implement and when I went to put it in gear, I can no longer move the shift lever into any gear except for 4th which kills the tractor when I release the clutch. I once got it into reverse (the tractor went backwards), but I did so by some unknown contortions of the gear shifter which had nothing to do with the reverse gear. In general, the shift lever moves somewhat freely in the forward direction (a long way - to 1st & 3rd), but without engaging, and only 4th (I think) actually feels like it will engage.

I obviously have transmission problems. 1) What nature of problem(e.g. expensive parts must be obtained) do you suspect?
2) I have never done much work on a tractor before. The manual says I must remove the rear drive axels, and then the trasmission. What techniques are recommended for handling these very large and heavy parts? I can't even figure out where to block it up at which doesn't involve the rear end. Any advice?

Thanks,
Scott

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JRA

09-02-2004 23:37:02

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Re: D14 transmission locked in reply to Scott Daniels, 09-02-2004 21:21:01

sounds like you have a broken or bent shifter fork, you can replace these without spliting the tractor, just take the top off the transmission to get at them, if it locks up it's most likely going into two gears at the same time. when putting the top back on seems like you have to put it in thied or forth gear, look at a repair book for your tractor to find out.

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Scott Daniels

09-04-2004 19:57:11

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Shifter popped out of lug on fork in reply to JRA, 09-02-2004 23:37:02

I got my shifter assembly out at last, I found out what happened. It appears that when it was in reverse (which is in-between the 1/4 and 2/3 forks, and I tried to put it in neutral, the shift lever "pin" popped out behind the reverse lug and was in "no mans land" betweeen the other two forks. Everything in the assembly appears to be in reasonable condition. What could be worn which would allow the shift lever to pop out of the lug like that? It appears that nothing was damaged, but I think I ought to replace whatever might be worn to prevent it from happening again.

On related subject, the teeth on the gear bushings are quite worn, and so the tractor pops out of 2nd & 3rd gear a lot. I read that it was due to this wear. I was wondering if it might also be related to possible wear to the bearings or indents in the shifter rods? Since they are responsible for locking the shift forks in the correct possition, I was thinking any wear to them might also lead to it popping out of gear. What are y'alls thoughts?

Thanks so much for all the great help!
Scott

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Scott Daniels

09-03-2004 08:50:54

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D14 shifter removal in reply to JRA, 09-02-2004 23:37:02

Thanks so much for the great advice. That sure beats splitting the tractor! I tried pulling the cover to which the shifter assembly is attached, and it is not forthcoming (I did remove the shifter first). I tried to peek in there and it appears that the forks seem straight enough, but I can only get it about halfway out.

Any mechanics tips for removing it?

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Dale(MS)

09-05-2004 06:23:28

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Re: D14 shifter removal in reply to Scott Daniels, 09-03-2004 08:50:54

Scott, After you have the shifter handle out, take a screwdriver or something and shift the tranny into reverse. The shifter assembly on the side will then come out if you hold your mouth just right. Might need to put some washers on the rails if its over shifting. Might check for detent wear, wear on the forks, bent forks, and might check the shifter handle ball for wear. As far as the gears ,collars,bearings,and etc. I'd recomend a good manual before you split the tractor. Hope its something simple cause some of that stuff runs high! Dale

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