Frozen Bolts Seat Assembly to Transmission Top Cover

RoeFarmall · Sep 13, 2018

Any advice on how to remove three of the four hold-down bolts that attaches the seat assembly to the transmission top cover. I cannot get an impact wrench on them and the only one that I tried (with a breaker bar), sheared off flush with the cover. All of the other bolts on the top cover have come loose. Any suggestions are welcome and appreciated,

1953 Farmall Super "H"

Janicholson · Sep 13, 2018

heat to red. allow to cool. Heat to red, allow to cool some, then put paraffin or candle wax at the base of the head. Allow to cool. Using a box end wrench, tap back and forth on the wrench with a hammer, tight first then loose, then tight. Keep at it with only shock forces, not twisting off force. Jim

used red MN · Sep 14, 2018

Prior to what Jim recommended I would suggest smacking the top of the bolt heads sharply. Like with a 18-20oz hammer. Wind up with a swing like you are driving a big spike through a 4x4. Ten or so hits on each. By doing this you are ever so slightly jarring loose the bond the rust has created with the threads. Good luck!

BarnyardEngineering · Sep 14, 2018

With the one that snapped off, once you get the seat removed, set a 3/4" nut over the broken off bolt, get out the welder, and fill the nut with weld. Don't worry, it won't stick to the cast, so even if the bolt is flush or even slightly below, it will be fine.

Allow that to cool. Then it will turn right out.

You may even consider using that technique for the other bolts. They have lock washers, right? Just grind the heads off leaving as much of a stub as you can, remove the seat, lay 3/4" nuts over each stub, and weld them on.

DR. EVIL · Sep 14, 2018

I fought the same problem on my '54 Super H back about 1980-'81. Was replacing the battery box seat base. What was left of the factory installed box ripped right off the bottom plate, the 4 big capscrews that held the base plate down the heads there tapered from the rust, any wrench or socket, even Vicegrips wouldn't turn them.
Dad welded four big hex nuts on top of all 4 of them, sprayed them with WD-40 after welding all 4 and they all turned right out.

RoeFarmall · Sep 14, 2018

Thank you for taking the time to reply, sir.

RoeFarmall · Sep 14, 2018

Thank you for taking the time to answer my question, sir.

RoeFarmall · Sep 14, 2018

Thank you for answering my question, sir.

RoeFarmall · Sep 14, 2018

Thank you for the reply, sir. Lots to consider.

khouse6 · Sep 14, 2018

i have had good luck with kroil penetrating oil. if this fails, then heat, welding as others have recommended is last resort.

DR. EVIL · Sep 14, 2018

You will be SHOCKED how much hotter welding gets the bolt than a torch will without heating up the surrounding iron and steel. Arc welding works best but even MIG welding works.

Frozen Bolts Seat Assembly to Transmission Top Cover

RoeFarmall

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Janicholson

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used red MN

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BarnyardEngineering

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DR. EVIL

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RoeFarmall

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RoeFarmall

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RoeFarmall

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RoeFarmall

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khouse6

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DR. EVIL

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