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Ryan Renko 
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Joined: 12 Sep 2009
Location: Edwardsville, I
Points: 2325
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 Topic: Stupid Question???
Posted: 13 Mar 2010 at 9:12pm |
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Don't ask me how or why,,,,, but is it possible to straighten a twisted connecting rod? It in a tractor that will only be used as a toy, not a everyday tractor. Thanks, Ryan
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Ryan Renko
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Joined: 12 Sep 2009
Location: Edwardsville, I
Points: 2325
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Posted: 13 Mar 2010 at 9:14pm |
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BTW, its in a MM ZTU!!!! It may have happened removing a stuck piston from a "jug"!!!!
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LouSWPA
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Joined: 11 Sep 2009
Location: Clinton, Pa
Points: 24355
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Posted: 13 Mar 2010 at 9:17pm |
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I know that machine shops can/do straighten rods, but I suppose there is a limit to what they can do. Best to take it to a good shop and have them look at it
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Jeff Z. NY
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Joined: 11 Sep 2009
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Posted: 13 Mar 2010 at 10:39pm |
Yes, They can be straightened.
Find a good engine machine shop.
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bigfish_Oh
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Joined: 13 Sep 2009
Location: West Liberty,Oh
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Posted: 13 Mar 2010 at 11:49pm |
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That can't be a stupid question, a stupid question is the one you don't ask.
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1941 WC sat for 29 years,started & dynoed 27 h.p.
1957 WD45 Grandpa bought new,factory p.s.,added wfe
1951 WD, factory p.s.
1960 D14 HnMk IV BkHoe 4 sale
2014 HD Tri Glide
2009 GMC CC SLT Dually
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Steve in NJ
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Joined: 12 Sep 2009
Location: Andover, NJ
Points: 11885
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Posted: 14 Mar 2010 at 8:44am |
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Depending on how bent it is, some can be straightened. I would think that you should be able to find a used replacement though if worst came to worst....
Steve@B&B
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injpumpEd
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Joined: 13 Sep 2009
Location: Walnut IL
Points: 4951
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Posted: 14 Mar 2010 at 5:24pm |
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call Rob Ohda at 815-379-2377 for your MM parts needs. He bought out Wilbert Kerchner's MM parts business. He is a very good guy to deal with, and is also an Agco Heritage parts dealer in north central Il. I buy all my parts thru him, yes supporting Agco, but most important, supporting his local business! Ed.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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Ryan Renko
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Joined: 12 Sep 2009
Location: Edwardsville, I
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Posted: 14 Mar 2010 at 7:48pm |
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Thanks for all the help!!! I'm a AC man, and just helping my good friend with this ZTU. Its interesting to see how other companies made their product. MM brakes are a dream compared to AC!! The motor, it was a whole new and strange beast!!! Ryan
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Gerald J.
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Location: Hamilton Co, IA
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Posted: 14 Mar 2010 at 8:11pm |
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I'm not much of a fan of reworked rods. A hairline crack as the result of bending and straigthening and one day you have a new vent hole in the block.
I saw a rod "refurbished" where the insert had been worn through and the crank left a mark in the rod. It came back from the shop with a nice set of honing marks. But the engine still knocked. I helped take it apart the next time and found the "round" hole for the insert was still ten thousandths out of round. Plenty for a rod knock.
Checking for straight is not trivial, not something you do with a yardstick and a plumb bob. You need STRAIGHT steel shafts to fit in both ends and then a surface place and a dial gauge or better to check those shafts for parallel in a couple directions. Unless the rod can't be had without bends it would not be cost effective to check properly.
Gerald J.
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