Super A Reverse Problem

Farmall Super A, AV, 100, 130, & 140 1939 - 1973

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Komatsuna
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Super A Reverse Problem

Postby Komatsuna » Tue Jan 13, 2015 7:08 pm

Ok. So I bought Super A today. Its nice, The engine sounds really good, a very pleasing sound indeed. It is going to cultivate carrots, beans, and beets.

Drove it around the place where I bought it, checked all the gears, checked the brakes. Worked great. Put it on the trailer, drove 175 miles home.

Started it up, put it in reverse, it just idles down and shuts off. Then I figured, well I'll just roll it off the trailer; but there was no neutral gear.

In summary: I have only one forward gear, (its a low one) no reverse and the shift pattern on the plate doesn't seem to relate to what I am actually feeling. No neutral, or reverse.

I did some reading prior to posting this and one thing I saw something about ice getting stuck somewhere, or being in two gears at once, or dirt falling in under something.

Any advice?

staninlowerAL
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Re: Super A Reverse Problem

Postby staninlowerAL » Tue Jan 13, 2015 7:52 pm

If there is water inside the transmission it might be frozen and contributing to the problem. Since you checked it out before bringing it home, it's probably something minor like the shift fork not moving the gears properly to get it into neutral, etc.
Suggest checking the trans. for water/proper level, probably will need draining/flushing and refilling. Pull the shifter cover off to aid in cleaning it out. You might discover the problem when you can see inside.

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raystractors
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Re: Super A Reverse Problem

Postby raystractors » Tue Jan 13, 2015 8:51 pm

You might discover the problem when you can see inside.

Most likely the shifter has gotten on the wrong side of the shift fork. When you try to put it in one of the other gears, the trans is in two gears at one time this will cause the engine to die. I did have an extra shifter somewhere if you need parts.

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havoc1482
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Re: Super A Reverse Problem

Postby havoc1482 » Tue Jan 13, 2015 9:07 pm

Yep, pop the tranny cover and inspect the forks, make sure they are aligned properly.
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Jim Becker
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Re: Super A Reverse Problem

Postby Jim Becker » Wed Jan 14, 2015 12:35 am

I can almost guarantee the problem is simply that you are in 2 gears at once. For the sake of discussion, lets say it is stuck in first (could be any forward gear). When you got on to unload it, it was probably already in first gear. As you shifted for reverse, the lever escaped from the 1-2 fork without completely getting it out of first gear. When you pulled the lever into reverse, it was then locked in 2 gears. You can push the lever forward (from the R position to neutral), at which point it is in first. You can pull the lever back into the R position, at which point you are again locked in 2 gears. This could happen because of wear on the lower end of the lever and the forks. With enough wear, it may allow some additional movement of the lever.

To verify/fix it, take the top cover off, slide all the moveable gears to the neutral position (1-2 and 3-4 centered, R to the rear). Reposition the forks (on bottom side of cover) to the neutral position (same as gears). Lower the cover straight down into place. Bolt it down. Try shifting through all gears to verify the forks engaged properly. If it doesn't work, you probably missed a gear with one fork, so try again.

This may be enough of a fix and it could be years before it happens again. If it happens repeatedly, you can build up the lower end of the lever with weld and grind it into a rounded shape that comes close to filling the available space in the shifter rails. If that doesn't fix it, you may need to replace the lever and/or the forks.

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Re: Super A Reverse Problem

Postby Donegal Cub » Wed Jan 14, 2015 7:02 am

Great advice from Jim Becker, :{_}: :{_}: :{_}:
Bernard,
Donegal Cub.

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Dale Finch
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Re: Super A Reverse Problem

Postby Dale Finch » Wed Jan 14, 2015 10:07 am

I had the same problem. When I removed the transmission cover, the shifter showed wear, but I did not know how much wear (forks themselves looked OK). This was MY post:
http://www.farmallcub.com/phpBB2/viewtopic.php?f=170&t=77588

I thought I had posted the results of my repair, but can not find it. In any case, I removed the shifter from the top assembly so I could repair the end.
2013-01-05 11.12.32 (Small).jpg
Underside of transmission cover

You have to carefully pry the keepers away from the bolts to remove them.
2013-01-05 11.49.20 (Small).jpg
Bolts holding sliders in place

2013-01-05 12.57.00 (Small).jpg
Detent springs and balls...watch out that they don't go flying!

2013-01-05 13.14.47 (Small).jpg
Fork assembly removed...springs and balls in place (note the worn end of shifter)

2013-01-05 13.19.08 (Small).jpg
Fork assembly

I had a friend weld/build up about the last 1/2" so it matched the rest of the rectangular cross section. (See the end before welding in previous post) Then I simply ground it back to a rectangular shape, while checking for a good fit in the sliders of the fork assembly:
2013-01-05 14.07.04 (Small).jpg
Forks sitting in place for fitting

You want it to be able to slide across the 3 shifter sliders as well as slide forward and back in each individual channel. In other words, not too tight but not too sloppy. This is where I had hoped for actual dimensions, but no one had them.

After working on it, I reassembled it and it has worked fine for a couple years now. If any part of this is not clear, ask again...someone will be happy to help. Good luck!

Komatsuna
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Tractors Owned: '54 AC G
'80 hydro 84
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Re: Super A Reverse Problem

Postby Komatsuna » Thu Jan 15, 2015 9:55 pm

Hey, was in two gears at once like you said. The middle slider was sticking which blocked me from being able to move the shifting handle around. I took it apart, tapped it around with a rubber mallet, and worked it free. I suspect it will happen again, but I am hoping that since it was the first time I ever drove the tractor, I just wasn't as sweet on it as I should have been.

Anyway thank you for your help with this I really appreciate the responses and the input. I making a living growing produce, so if anyone ever needs anything in that dept, feel free to PM me.

Matt Kirsch
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Re: Super A Reverse Problem

Postby Matt Kirsch » Fri Jan 16, 2015 1:56 pm

When you shift, try to shift in a "square" fashion. Straight forward/back to neutral, then straight left/right to select a different shift rail.

We tend to get sloppy when we shift and move the lever kind of "diagonal." This is where you can get into trouble and slip out of the rail.

Komatsuna
Posts: 19
Joined: Fri Nov 14, 2014 6:00 am
Zip Code: 00000
Tractors Owned: '54 AC G
'80 hydro 84
'80 AC 6080
'48 Super A
Circle of Safety: Y
Location: South Eastern Pennsylvania

Re: Super A Reverse Problem

Postby Komatsuna » Fri Jan 16, 2015 5:35 pm

that makes sense with the square pattern, thats good advice thank you. i suspect that contributed to be de railing.

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havoc1482
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Re: Super A Reverse Problem

Postby havoc1482 » Fri Jan 16, 2015 5:51 pm

Komatsuna wrote:that makes sense with the square pattern, thats good advice thank you. i suspect that contributed to be de railing.



I've made a habit of when I put it in neutral I slap the shifter side to side a couple times then move it in front/back of the gear I want then shift
Mike
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I bleed Black & Gold

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Western Mass. (The 413)


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