H rod bearings ..[expand] - Paul G. In Mn

John M · Jan 23, 2009

Pretty sure the 003 is the bearing size. It was like a cheap fix for slighly wore journals. Im sure that when I pulled my I4 apart, the bearings were the same, and when I had the crank checked, it was 00356 off of original. Ill be corrected if Im wrong Im sure.

ScottyHOMeY · Jan 23, 2009

Yep, I think eerybody was having trouble responding to posts for a while.

John's recollection is right. I ran the number through the CaseIH parts site and it came up as 0.003 (three thousandths) under.

Anonymous-0 · Jan 23, 2009

You mean 3thous OVER. There isnt any undersize bearings as the crank is worn so the bearings need to be oversize.

ScottyHOMeY · Jan 23, 2009

LOL! I thought about that when I posted and knew I was sure to hear from somebody. ;8^)

I hear ya, Gene, and tend to agree. Cranks are worn or turned to under which means the bearings have to be over to fit. Still, the IH listing called them undersize (consistent with the listings I find in their hard copy parts books), just to perpetuate the potential for confusion! On that point, I see it a lot on here and think one of the best pieces of advice to folks who will only ever deal with one or two crankshafts in their life is to take their crank to a machine shop that's used to these things and have them supply the bearings.

The rest of this is offered so that my ramblings don't confuse the guy (I think it was Paul) who initially asked the question, in case he's still following us.

1)On the "over" side of the argument, yep, the two sides of the bearing shells will be a total of .003 thicker (over standard), 0.0015 on each side

2) On the "under" side of the argument, the resulting internal diameter of the shells will be .003 under standard.

Sort of a variation of the half-full/half-empty glass question, I guess.

El Toro · Jan 23, 2009

Te bearings are still called undersize since the shaft is undersize. Hal

Paul G. in Mn · Jan 23, 2009

Thanks all for the replys, I have never seen a bearing .003 so wasnt sure. I better do some measureing to see were the crank is at to see if I need to grind it. Would like to just through it back togather as cheap as I can since it will just be a parade tractor. Paul

ScottyHOMeY · Jan 23, 2009

.003s were common not just for wear but also from the factory to account for oopses in turning.

If that's what was in there and the tractor was ever worked any, it will likely need .010s at the least, and may need to be turned for that for them to work.

El Toro · Jan 24, 2009

Have your local auto machine shop measure it for wear. Hal

H rod bearings ..[expand] - Paul G. In Mn

John M

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ScottyHOMeY

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Anonymous-0

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ScottyHOMeY

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El Toro

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Paul G. in Mn

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ScottyHOMeY

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El Toro

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