Field clutch adjustment on Super A-V

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

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ccaissie
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Field clutch adjustment on Super A-V

Postby ccaissie » Thu Jul 09, 2015 6:52 pm

A client of mine has a 1948 Super A-V, used in cultivation of his cabbage for sauerkraut. When using it to pull a transplanter, he confessed to "riding the clutch a lot". Now it's slipping and in serious need of adjustment, and I'd like to get a run-down of the tools I need to do this on his farm.

I read a post here that said simply adjusting for free play is not enough, as doing so repeatedly brings the TO bearing closer to the pressure plate fingers. Some kind of pressure plate adjustment. Can this be done in the field?

When he bought the A-V, I suspected that the larger wheels with the same transmission might make it too fast over the ground. Ayuh.

What do I need for tools for the freeplay? For the "other" adjustment?

Colin
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raystractors
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Re: Field clutch adjustment on Super A-V

Postby raystractors » Thu Jul 09, 2015 8:11 pm

If there is any free play in the clutch, then adjustment will not do any good. Sounds like time to split the tractor and replace the clutch.

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havoc1482
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Re: Field clutch adjustment on Super A-V

Postby havoc1482 » Thu Jul 09, 2015 11:13 pm

define slipping. Like it if you put it in gear and put a load on it will stop moving, but the engine won't stall out? Or it won't engage fully?
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Matt Kirsch
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Re: Field clutch adjustment on Super A-V

Postby Matt Kirsch » Tue Jul 14, 2015 7:10 am

Any free play in the pedal travel at all means the clutch is engaged as it can possibly be. If it is still slipping at that point, it is burned up and the only fix is to replace it.

What your friend has done is heated up the friction material on the clutch disk and caused it to glaze over with a hard slippery smooth surface that will not grip the flywheel no matter how hard the pressure plate clamps down on it.

ccaissie
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Re: Field clutch adjustment on Super A-V

Postby ccaissie » Wed Jul 15, 2015 10:58 am

All good replies...thanks.

Client doesn't know what he's talking about... tractor was out in a field waiting for a tire, so I didn't run it, but checked freeplay. Was OK.

So what I found was that the clutch was sticking and couldn't get it into gear. It's not slipping at all.

I'll post another thread, becasue I'm not done with this problem.

Thanks, guys.
1948 Farmall Super AV
1961 Cub
1964 International B275
1947 International KB-5 Dump Truck
1968 F-250 plow truck
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