Pete 23 Again

Allan in NE · Jul 9, 2011

No, not the pipe plug, above it and a little to the right.

1/4" in diameter and about 1/2" deep. Looks like it might have been plugged with a lead seal? Like you'd seal an open-ended carb passage?

Allan

pete 23 · Jul 9, 2011

That is a whole different story. That is the pin guiding the tappet internally. You need to repair pump. Probably have someone familiar with that pump just take a peek at it to be sure we are talking about the right thing. Last pump I had repaired, they had rebuilt housings that are supposed to be better than new ones. I used to just put new housings on.

Allan in NE · Jul 10, 2011

Thanks for your help, Pete. I really, really appreciate your time and expertise.

Went and studied the parts breakdown on Case-IH. They don't even show this passage on the housing. See picture below (I put a green dot on it's location).

Also looked at 3 other tractors and they all have just a leaded in plug there. My 966 shows marks of it being staked in, in 3 points around the hole.

As I said earlier, looks like a tiny, little carb passage lead plug.

Tractor runs just fine in all respects; just splashing oil out of this small hole in the housing.

Allan

Brownie 450 · Jul 10, 2011

Had the same trouble with ours. Made a bracket out of 3/16 strap about 4 inches long which bolted to one of the pump mounting studs with a double nut. This holds a lead solid washer against the original plug.
You will have to cut & bend the strap to get the right fit & tension on the lead washer. Just go a little at a time to get a tight fit.
If you need a washer, give a holler.

Allan in NE · Jul 10, 2011

There was nothing in behind that plug? Just a drilled passage that needs to be plugged?

I was thinking of using a carbreautor lead plug. Used to use 'em all the time when I did a lot of carb work.

Maybe ya can't even buy those plugs anymore?

Allan

Owen Aaland · Jul 10, 2011

There is supposed to be a steel pin in the hole that acts as a guide to keep item # 16, the tappet, from rotating. It is manufactured as part of the housing so it is not available separately.

pete 23 · Jul 10, 2011

Allen, see number 16 in the illustrtion. That is the tappet that runs off the camshaft and lifts plunger in pump. There is a groove in the side of that tappet and a pin is pressed into the housing and that tappet is guided on that pin. Now the roller part of tappet will seek it's own center over the cam shaft lobe so it might work for ages with out that guide pin but I sure would not be the one to tell you to run it that way. The pin apparently worked it's way out. Normally they just get loose and start leaking . Will it cost more to repair it later or do it now, I don't know so it's your call. It might run longer than you and I. You can just clean it up good and find a "short" plug and tap it in with some locktitie or a lead type carb plug like you suggested.

Janicholson · Jul 10, 2011

Find a piece of neoprene hose that fits in the hole.
Put a small flat head machine screw in the hole, with a washer then a nut. The washer is on the outside of the fix. The assembly is pushed in until the washer hits the body of the pump.

Then use pliers to hold the shank of the screw, while tightening the nut. This expands the rubber making a permanent fix. Jim

Pete 23 Again

Allan in NE

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Allan in NE

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Brownie 450

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Allan in NE

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Owen Aaland

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pete 23

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