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Ford 9N, 2N & 8N Discussion Forum
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Speaking of welding cast iron...

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Phippsburgh

04-13-2008 16:07:05




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After reading post a couple down from here on cast iron troubles, I will throw mine out here:My 8N oil pan appears to have been brazed from top to bottom on RH side. It leaks a bit still. Just a long vertical braze job. Any recommendations? Fix or replace? Thanks




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Mark Pearce

04-14-2008 01:54:28




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 Re: Speaking of welding cast iron... in reply to Phippsburgh, 04-13-2008 16:07:05  
Phipps, Some have suggested taking the pan off to braze it again. If it were me I'd just change it at this point and be done. A few pans are on ebay cheap enough. I'm a welder by trade and yes it's true, brazing is stronger than the original cast. But by the time you take it off, buy the rods, flux, and welding gas and preheating gas you just as soon slap a nuther one under it. Then in the end you have an un-repaired tractor part to sport around.


Mark....

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Phippsburgh

04-14-2008 14:41:21




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 Re: Speaking of welding cast iron... in reply to Mark Pearce, 04-14-2008 01:54:28  
Nobody sells them new? or are they made in CHINA like everything else?



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old

04-13-2008 21:43:57




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 Re: Speaking of welding cast iron... in reply to Phippsburgh, 04-13-2008 16:07:05  
If it has been brazed then you can not weld it. Brazing and welding are 2 different things and once brazed you will have to rebraze it. If you try to wled it you will have a big mess on your hands



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Hobo,NC

04-13-2008 18:32:21




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 Re: Speaking of welding cast iron... in reply to Phippsburgh, 04-13-2008 16:07:05  
Well,,,, me iffin I were try'n to git out cheap I would try and fix it,,,, knowing in the back of my empty head that I have a frame less tractor and the pan is part of the main structure,,, mite look into git'n a good used oil pan,,, less werk,,, will not git bit,,, bite the bullet and move on...

My main werker that sported a brazed oil pan leaked,,, got my oil bath and made the swap,,, twas no fun,,, have fun

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StormCloud601

04-13-2008 17:35:21




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 Re: Speaking of welding cast iron... in reply to Phippsburgh, 04-13-2008 16:07:05  
When you braze it adjust your torch to a neutral flame. Open the atcetelin to a nice feathery yellow flame, then add oxigen until the flame clears up.Look at the small blue flame in the center, you will see a light blue point and a darker blue point. Adjust the oxigen until the light blue disappears into dark blue... stop at that exact point and you'll have a neutral flame. Perfect for brazing. John

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2t2@ia

04-13-2008 17:24:02




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 Re: Speaking of welding cast iron... in reply to Phippsburgh, 04-13-2008 16:07:05  
If the brazing that is there is sound, it might work to add a coating of epoxy or high temp silicone to stop the leak.



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Sean (TX)

04-13-2008 17:08:53




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 Re: Speaking of welding cast iron... in reply to Dell (WA), 04-13-2008 16:07:05  
will do..glad I found the piece that was broken..



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Den N Ms

04-13-2008 16:48:24




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 Re: Speaking of welding cast iron... in reply to Phippsburgh, 04-13-2008 16:07:05  
Phippsburgh,I have brazed them up with good luck.the first one twice,It was also cracked from the pan rail to the bottom on one side.After brazing it up and allowing it to cool off slowly.I started to put the gasket on it and noticed that the pan rail flange was warped.So with that said,I had to do it over.I had to clamp a 3"x3"X1/2" angle iron to the top rail with 4 bolts and nuts through the angle 2 big C clamps and after heating the brass up and tightening thebolts and clamps to get it back straight.Then rewelding it.It cooled off this time and stayed straight.

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Sean (TX)

04-13-2008 16:35:17




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 Re: Speaking of welding cast iron... in reply to Mark Pearce, 04-13-2008 16:07:05  
What rod is best to use? I have a broken bolt hole on my steering column? Found the piece that goes there when I unbolted the hood...



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Den N Ms

04-13-2008 16:51:25




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 Re: Speaking of welding cast iron... in reply to Sean (TX), 04-13-2008 16:35:17  
Sean, just use your trusty new torch and some flux coated brazing rods.



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Dell (WA)

04-13-2008 16:18:00




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 Re: Speaking of welding cast iron... in reply to Phippsburgh, 04-13-2008 16:07:05  
Phipps..... ...re-braze it again. You'll haffta "Vee" the crack where it is leaking to gitt more "purchase" or holding power. Braze is plenty strong, infact its stronger than castiron. You'll need to remove the oilpan so you don't fight gravity. CLEAN it well with solvents and soap and water. STOP DRILL a 1/8" hole end of crack. Brazing is not difficult with HOT enuff torch and plenty of fresh "flux"..... ..Dell

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