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Farmall & IHC Tractors Discussion Forum
:

Super A gear box issue?

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drforsythe

02-22-2020 05:00:53




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Hello, I m a first timer here so please bear with me.
I have 1970?? Farmall Super A that s beginning to have a possible gear box issue.
When I m scraping our road in 3rd gear the tractor seems to be starting to be getting into a bind and starts slowing down to the point that the tractor will stall if I don t press in the clutch.
When this stalling begins in can shift to 2nd and continue.
There is not enough gravel or dirt in the blade to cause this stalling.
I m thinking that there is a bearing or bushing that is causing this problem. I ve had this issue for a couple of years but now it s gotten to the point that it s getting hard to use.
Replaced the clutch winter of 2018/19 and replaced the bushing in the crank end for the clutch shaft. Just replaced the right side tire and brake band and checked the bearing for that side and bearing is good. All the gear oils are good.
Anyone have any insight on this problem or do I bite the bullet and plan on replacing all bearings, bushings and seals for the gear box and left wheel.
Thanks
Donnie [/b]

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drforsythe

02-23-2020 13:18:44




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
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UPDATE UPDATE!!

Gear Box Issue is no More!!!

The problem with the stalling was power related, fuel line, inside of the fuel line was collapsing and not providing enough fuel.
Thanks to everyone who commented on this issue, y all saved me a gearbox tear down.
Again thank to everyone, this forum was really good.
Donnie Forsythe
Wake Forest, NC

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Janicholson

02-23-2020 14:53:40




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 Re: Super A gear box issue? in reply to drforsythe, 02-23-2020 13:18:44  
You are welcome. We have (collectively) Thousands of years making these beauties live beyond their use by dates. Jim



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tn terry t

02-23-2020 00:08:24




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
some of us need to go back and read the post. your pulling a 6 foot scraper blade behind a super A I think your just running out of power myself you said you put it in second gear and continued dragging rock



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John M

02-23-2020 10:37:01




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 Re: Super A gear box issue? in reply to tn terry t, 02-23-2020 00:08:24  
Well, since that information wasn't provided until after posts were made it would be hard to determine what size blade he was pulling.



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drforsythe

02-22-2020 15:59:29




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
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I m pulling a 6 scraper on 45* angle to just move gravel/dirt to center and fill pot holes but the our private road is just under a mile long. Tractor does do a lot of work but doesn t burn any oil
I m very interested now following up on the governor/tuning and rechecking the gear oils for contamination. Actually investigate all possibilities that everyone has commented on in the post reply s.
Would really hate to tear down a gearbox just to find that the engine oil screen was stopped up and stalling this tractor down.
As everyone already know that the Super A with just 17hp is a pulling bull in its own right.
Thanks

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Janicholson

02-23-2020 06:28:58




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 15:59:29  
If you were loosing oil pressure, and this was happening over a period of years, you would have already had total engine failure. An engine that is out of time, or has a bad centrifugal advance mechanism in the distributor will run pretty smooth, but have way less power than it should. Understand that the Horse power rating is the drawbar power, not engine hp (as in what a lawn tractor is rated). The tractor has quite a bit of engine, and is considered well powered. Jim

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brownie450

02-22-2020 13:50:52




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
To go along with the engine thing, what is your oil pressure showing when the tractor
slows down?

You could have sludge built up in the pan
that is limiting oil available to the oil
pump pickup/ screen.
Tractor runs normally until engine gets oil
starved & then bogs for lack of lubrication.
Jim



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drforsythe

02-22-2020 10:42:58




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
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From all the post this issue has generated everyone has convinced me to look further into maybe engine tuning,, governor, carburetor. Everyone has offered a lot of interesting
thoughts/suggestions to look into which i will get into soon.
It s definitely making me second guess my thoughts.
Thanks



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Dave bn

02-22-2020 10:00:17




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
Also, have you ever checked or changed fluid in the final drives? Many forget that. Level check is above front drawbar. Could be fluid is water logged and has ice in it. Same with transmission.

Dave-again,.....



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Dave bn

02-22-2020 09:42:38




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
Might be governor not allowing engine to keep up with increasing load.
Can you start out in 4th gear from a dead stop? Half throttle on level ground should start going with minimal clutch slipping.

Serial number is stamped below spark plug#1


Dave



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Janicholson

02-22-2020 08:30:36




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
Here is another analysis tool: When it bogs down, and you push in the clutch, does it come to a stop like the brakes are on, or does it slow like it does when working OK? the reason I ask is to add clarity to where the binding/loss of progress is originating. If it stops normally, I think the problem is in fuel supply or engine tune, possibly timimg. Slowing under load in a higher gear that is eliminated in a lower gear points to loss of power, not internal friction in that single gear. As long as it has been going on, the 3rd gear teeth would have failed. Parts 45, and 26 run together and do not really have a way to bind or get crooked. They can fail from broken teeth, or worn so they jump out of gear, but I have never seen them cause loss of power. Jim

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drforsythe

02-22-2020 07:45:08




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
Pretty confident that it s not engine related, just has that tighting up feeling and sound.
Thanks



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drforsythe

02-22-2020 07:34:57




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
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Very sure, can shift down and keep going.
As for the year is questionable no numbers on the tractor at all
And that what I was told, it is a Farmall Super A for sure I m guessing 1950 s.
Thanks for replying



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blackhole49

02-22-2020 07:31:20




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
According to Tractor Data, they stopped making the Super A in 1954. What is the condition of the engine? Compression, oil usage etc. My very tired oil burning 8n will mow all day in second gear. If I try to use third, heavy grass or the slightest hill will cause it to bog and sputter. I know my engine needs some serious attention, but oil is cheap and second gear is fast enough.

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gene bender

02-22-2020 12:29:36




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 Re: Super A gear box issue? in reply to blackhole49, 02-22-2020 07:31:20  
that is a finish mower is the mower set do the front is lower than the back. Turn a blade pointing forward the front should be 1 in or so lower than the blade is at the rear.



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blackhole49

02-22-2020 15:37:16




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 Re: Super A gear box issue? in reply to gene bender, 02-22-2020 12:29:36  
This is a heavy duty 6' Land Pride and is set correctly. It is pushing the limits of a healthy 8n. Mine just lacks the poop to pull it in third. 90 psi in all cylinders and a quart of oil every 5 hours is really the issue.



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John M

02-22-2020 07:27:09




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
Are you sure its binding up and not just loosing power? Im thinking maybe a carb issue. BTW, its not a 1970 if its a SA.



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drforsythe

02-22-2020 06:46:13




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
Sounds like a good plan, will do.
Thanks



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brownie450

02-22-2020 06:33:54




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
Jack up the rear end & roll the individual wheels
one at a time to listen for noise.
If no noise there, block the clutch down in the
released position & put the transmission in a gear.
Roll a wheel & listen for any noise.
Repeat in all gears listening for any noise.
Jim



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drforsythe

02-22-2020 06:01:00




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
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Brakes are not dragging, checked that way back when this started a couple of years ago. It s gotten so bad now that it can t go maybe a 100 feet before loading down and have to clutch and shift.



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caterpillar guy

02-22-2020 05:52:29




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 Re: Super A gear box issue? in reply to drforsythe, 02-22-2020 05:00:53  
Is the brake band draging enough to get hot and bind up? That would take a bit of running to get warm enough to act like that. Feel the brake housing when it happens next time. Or check the free travel of the pedals when it happens to see if it has changed from when you started. You would need to check before you start then when it happens.



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