Touch control; mixed internals?

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

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havoc1482
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Touch control; mixed internals?

Postby havoc1482 » Mon May 23, 2016 8:50 pm

So I was putting the new o-rings in my touch control for the rebuild and I was scratching my head at Steiner's instructions.

They gave me 10 of these blue o-rings. 2 are for the pump, and depending on what style of block, you either use 4 or 8 more. Well when I disassembled I only removed 6. Here is where I think someone rebuilt this unit using a parts block.

If all 4 of these were double o-ring types I would have used the 8, and if they were all single type I would have used 4. I think someone may have used a set of doubles and a set of singles which is why I ended up only using 6 o-rings.

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My unit does not have the inspection plate on the top so I believe it is the older style .
Mike
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Re: Touch control; mixed internals?

Postby Matt Kirsch » Tue May 24, 2016 3:26 pm

Or, you may have a block that was assembled at the factory with mixed parts during a transition period. IH was famous for using up old supplies of parts as long as they were compatible, rather than throwing them away.

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havoc1482
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Re: Touch control; mixed internals?

Postby havoc1482 » Tue May 24, 2016 4:41 pm

I don't think so. This tractor is a 1948, and the casting code on the TC block also indicates 1948 (R). The TC was first introduced on the Super A and C in 1947 and 1948 respectively. At that point in time the factory would have only been working with one type
Mike
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Re: Touch control; mixed internals?

Postby Matt Kirsch » Wed May 25, 2016 12:20 pm

So much for that theory, LOL...

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havoc1482
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Re: Touch control; mixed internals?

Postby havoc1482 » Mon May 30, 2016 12:27 pm

Well I can tell you this, I just put the unit back on the tractor and WOW! What a difference! The rockshafts follow the levers within like +/- 1 degree. The moment I put even the slightest pressure on the lever I can see the rockshaft on the TC starting to creep and it stops when I stop. None of that "playing catch-up" like it used to.
Mike
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Re: Touch control; mixed internals?

Postby Super A » Mon May 30, 2016 9:05 pm

havoc1482 wrote:I don't think so. This tractor is a 1948, and the casting code on the TC block also indicates 1948 (R). The TC was first introduced on the Super A and C in 1947 and 1948 respectively. At that point in time the factory would have only been working with one type


There were lots and lots of changes going on to the TC unit in the 1948-49-50 period. If you can find a print copy of TC39C you wouldn't believe all the serial number breaks.

Al
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Let us pray for farmers and all who prepare the soil for planting, that the seeds they sow may lead to a bountiful harvest.


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