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Farmall & IHC Tractors Discussion Forum
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H Broken Rod

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45FMH

05-25-2005 07:59:41




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Was shredding pasture late yesterday and all of a sudden was a racket. Shut H down & found hole on left side of block behind governor. Rod had came loose & knocked out a chuck. Haven"t investigated yet but appears rod cap may have came off. Tractor was in good shape with no oil consumption and good oil pressure. Any hope to patch block if crank OK??




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El Toro

05-25-2005 11:08:34




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 Re: H Broken Rod in reply to 45FMH, 05-25-2005 07:59:41  
A good welding shop can probably patch the hole
with no problem. The crankshaft may be a bigger
problem. I guess it's a little early to determine that until you get the engine apart.
Hal



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RustyFarmall

05-25-2005 08:25:35




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 Re: H Broken Rod in reply to 45FMH, 05-25-2005 07:59:41  
I have a 1940 M that suffered the same disaster at some point in it's life. Someone welded a steel plate over the hole, it looks like you know what, but it made the engine useable again. Knowing a bit of this tractors history I am sure that the repair was done at least 30 years ago. I have never experienced any problems with leaking oil from this patch, so yes, it can be done.



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Janicholson

05-25-2005 13:09:27




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 Re: H Broken Rod in reply to RustyFarmall, 05-25-2005 08:25:35  
My two cents as follows:
If the break in the block is moderate in size (might pass a chicken egg, but not a baseball) I would repair the break by grinding the opening so that the egdes are smooth. And I would limit all cracks by using a 1/16 inch drill to put hole at there extreeme end. (this limits "stress concentration") I would use a 1/4" plate bent to match the block if curved there. and I would drill and tap holes to bolt the "patch" inspection plate on the block. Remember to use tap drill size for the threads, and clearance size for the plate. 1/4X20 is a good size. no more than 1.5 inches between bolts! A cork gasket made from 1/16 thick sheet, and non hardening permatex sealer will make a nice job. At least in looks compared to a welded on plate. The pan should be off to clean and polish up the rod journal, so cleaning chips should be easy. If the break is located in a place with attachment points for internal or external components, I would seriously consider a different block.
Good luck JimN

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45FMH

05-26-2005 09:56:41




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 Re: H Broken Rod in reply to Janicholson, 05-25-2005 13:09:27  
Was able to check out damage last night. Journal on crank is smooth. Fished out 2 cap bolts that were both broken off level with rod ends. Apparently 1 broke & then the other bent & broke. Small chip off bottom of sleeve & possible small chip off bottom of piston skirt. Will pull pan & check out the other side of the rod & journal. May get lucky on this one.



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