M drive train problem

5786 Views 10 Replies 6 Participants Last post by Southern, Nov 30, 2012

Southern

Discussion Starter · Nov 27, 2012

OK last summer I was using the M on my hay rake. I was in 3rd going up a slight hill, then something bad happen. It will go in all gears, but the clutch pedal shakes badly. With a popping sound coming from somewhere in the drive train. The clutch works fine cause I can shift gears. The shake and pop is only in a gear, not in neutral. I'm about ready to dig into it and finally get it fixed. Along with a other things to be fixed. Which will be taken care of while I have him in the shop.

Any ideas on where to start? Or the cause?

Here is a pic of him several hours before breakdown. My paw paw bought it brand new in 1947 and was his pride. Now I have him and he is my pride of the farm. So I really want him going again.

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jwal10

· #2 · Nov 27, 2012

Bad axle bearing letting the bull gear drop down?

....James

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Southern

Discussion Starter · #3 · Nov 27, 2012

jwal10 said:
Bad axle bearing letting the bull gear drop down?

....James

I don't think it is. Cause it would make some kind of noise while pulling it home. The field was like a mile from the house. So wasn't too far to pull it with a chain.

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John M

· #4 · Nov 27, 2012

Just guessing here, but the first thing that pops in my head is the rubber washers in the clutch connection above the belly pump, then Id have to say a bearing in the constanst mesh assembly or the lower bearing on the bottom shaft. These would make noise when under load, and not when its not under load, and make the clutch pedal shake. Does it do this in all gears or one specific gear?

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wizzard

· #5 · Nov 27, 2012

if the pedal shakes then it has to be clutch or imput shaft related

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Southern

Discussion Starter · #6 · Nov 28, 2012

Thanks

Thought I would ask on here to see what yall said that been around Farmalls much more than me. And to give me an idea where to start. Guess I will look up around the Clutch area first. I know before I put him in the shop. I'm firing up the Steam Pressure Washer I have. To knock years of gunk off him. Even dad made a comment he wants it going again to help out on haying. Its a darn good tractor and still a strong puller.

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Southern

Discussion Starter · #7 · Nov 28, 2012

John M said:
Just guessing here, but the first thing that pops in my head is the rubber washers in the clutch connection above the belly pump, then Id have to say a bearing in the constanst mesh assembly or the lower bearing on the bottom shaft. These would make noise when under load, and not when its not under load, and make the clutch pedal shake. Does it do this in all gears or one specific gear?

I tried almost all the gears and it did it. Hope its a simple fix, where I don't really have to tear it down.

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Southern

Discussion Starter · #8 · Nov 28, 2012

wizzard said:
if the pedal shakes then it has to be clutch or imput shaft related

Yes it shakes. And you hear a popping noise while it does it.

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Reese92PA

· #9 · Nov 28, 2012

One thing I'd try is putting it in 5th. 5th is overdrive and puts the whole top shaft in line. If that roller bearing gave out, then 5th would help alleviate some of that. If it stops when you push in the clutch it has to be one of the input bearings, the roller bearing on the top shaft or the two on the bottom shaft. If it doesn't do it in neutral it's from there back. If it does it in neutral and in gear, it's between the clutch and pinion shaft. I just did the tranny on my MD and found some things while I was in there, but nothing like this.

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4020 forever

· #10 · Nov 29, 2012

I'm guessing something with the clutch. My H had the clutch go out on it. Same symptoms

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Southern

Discussion Starter · #11 · Nov 30, 2012

Thanks for the added advice on this. I talked to dad about getting him in the shop. He currently has a project going on in there. Soon as he is done, we will pull the Mighty M in. My shop isn't ready for a task of this magnitude, so he will go into dads. Like I mentioned before. He will get a good power washing, then I will go with the clutch area first. Since that would be the easiest route to take. I will do a full update as I go. Expect plenty of pics!

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