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Harry Ferguson Tractors Discussion Forum
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TO 30 Cracked block

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Bill NY

05-05-2008 05:11:23




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I just got my TO 30 a few weeks ago engine smoked and water in the oil I started taking her apart to do a compleat rebuild and found out the block was cracked what a let down does any one know how I can fix this or where I can get it fixed it is cracked between the water jackets in the bottom where the O rings seal thanks in advance for your help




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Retired MF Dealer

05-13-2008 08:38:05




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 Re: TO 30 Cracked block in reply to Bill NY, 05-05-2008 05:11:23  
Find a good welding shop in your area that is not afraid to weld cast. I have fixed a lot of these old blocks over the years and never had a single one to give any problems after welding them up. The threaded rod fix mentioned earlier will work if done right but looks a bit ugly if you want the tractor to look original. "Retired"



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gshadel

05-05-2008 12:15:28




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 Re: TO 30 Cracked block in reply to Bill NY, 05-05-2008 05:11:23  
Bill, hopefully you did not pay top dollar for that damaged TO. In addition to Jerry's suggestion about furnace brazing, the technique used since the 50's was to drill through the block between the cylinders, run all- thread thru the block and pull the block together. Then run some block sealer thru the block. There are a lot of TO's running today that way. That seems to becoming a lost art though.
Call a couple local machine shops on the brazing and all-thread. Call agricult. machine shops that are familiar with tractor repairs. If you live in "the city", those machine shops will likely have no clue.
I see used blocks for sale on Ebay pretty regulary also.

George

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RockyMO

05-06-2008 04:15:29




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 Re: TO 30 Cracked block in reply to gshadel, 05-05-2008 12:15:28  
I have seen reference to the all thread repair before. Do you know where I can find pictures showing such a repair? I don't need it right now and hopefully never will but would like to understand how it's done just in case. I have a TO 30 scheduled for a rebuild starting in a few weeks after the food plots are in. Thanks,

Rocky in MO



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Jerry/MT

05-06-2008 17:09:29




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 Re: TO 30 Cracked block in reply to RockyMO, 05-06-2008 04:15:29  
My original engine in my TO-30 had a tension rod repair. The threaded rods rods are very thin ~3/32" because the gap between the cylinders in really small. They were located about 1" below the deck of the block. This repair won"t work if the crack has propagated through to the cylinder sleeve seats where the o-rings sit. You might make it work if you can get a second row of tension rods down low but I believe the cam is in the way.

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gshadel

05-06-2008 07:03:37




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 Re: TO 30 Cracked block in reply to RockyMO, 05-06-2008 04:15:29  
Sorry, no, I do not know of any pictures, know of pictures, or have any super detailed instructions on how to do this. I believe you simply drill thru the side of the block between the pistons, just above the bottom webbing for bottom cracks, thru both sides of the block so the all-thread will pass between the sleeves. Then tighten nuts on each end. I've also heard of threading the block on one end and just threading the all thread thru the block and peening on one end, and a nut on the other end, and seal with the best goop you can find. Epoxy would work on the inside of the block to seal around the hole also.

George

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Jerry/MT

05-05-2008 10:16:53




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 Re: TO 30 Cracked block in reply to Bill NY, 05-05-2008 05:11:23  
Check with a local machine shop and see if it can be furnace braze repaired. This is a common occurance on Continental blocks and the modern repair proceedure is the braze repair. It"s competive in price with a used block ($400-600)and you have the advantage of the block being stress relieved in the process and align bored. I"ve seen some pretty hopless looking cracked blocks on backhoes repaired with this process and returned to service. The alternative is a remanufactured short block that"s ~$1500-1700.
Occaisionally block are for sale on ebay.

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