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1994.5 - 1997 7.3L Power Stroke Diesel  

Oil cooler rebuild problems

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Old Mar 26, 2016 | 05:59 PM
  #1  
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Oil cooler rebuild problems

I recently bought a 1995 2wd F350 CC dually, and I'm having trouble with rebuilding my oil cooler. Didn't have much trouble removing it, I took the fender liner out and it made it a breeze to get to the front housing bolts. I was thinking that this job wasn't going to be as bad as I thought, until I got the cooler apart. Both housings are pitted pretty badly where the coolant Orings seat, and no amount of cleaning/polishing with emery cloth is going to remove the pitting. Has anybody had to deal with this type of problem, and how did you go about fixing it? I got my Orings and gaskets from Diesel O rings, and they have the housings, but I can't afford what they want for them and I can't find them anywhere else. Has anyone tried putting gasket sealer in the housing where the coolant Oring seats before assembling the cooler? Any ideas on how well that might work?
 
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Old Mar 26, 2016 | 06:19 PM
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Can you post a pic of the pitting?
 
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Old Mar 26, 2016 | 06:37 PM
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This is the worst of it on the rear housing.
 
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Old Mar 26, 2016 | 06:43 PM
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Yeah, that doesn't look real good. The only thing I would know to try would be fill the pits with JB Weld and sand it smooth. No guarantee on anything you do to it that it won't leak, but I know where you're at on not being able to afford new ones.
 
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Old Mar 26, 2016 | 07:20 PM
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3 1/2 Oz. Tube Liquid Metal Filler 25909 - Permatex (25909)

And sand smooth
 
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Old Mar 26, 2016 | 07:38 PM
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Originally Posted by fordpride
There ya go! Even better!
 
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Old Mar 26, 2016 | 08:57 PM
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That looks like a good solution, thanks!
 
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Old Jun 14, 2016 | 02:12 PM
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The liquid metal filler worked really well. So far no leaks, or oil in the coolant!
 
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Old Jun 14, 2016 | 02:38 PM
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Would that stuff work on an exhaust manifold?
 
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Old Jun 14, 2016 | 02:54 PM
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I'm not sure if it would or not. I'll look at the tube when I get home and see if it says how well it holds up to heat.
 
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Old Jun 14, 2016 | 04:20 PM
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Originally Posted by Jarrett Campbell
Would that stuff work on an exhaust manifold?
Detailed Description

Easy-to-use filler can be drilled, filed, sanded and painted. Forms a long-lasting, metal-tough bond. Works on metal, wood, and concrete. Excellent adhesion to galvanized metal. Repairs cracks or porosity leaks in cast metal parts. Fills small holes, cracks, and perforations. Resists water, oil and gasoline.Suggested Applications: Oil pans, stake bed holes, door panels, cast metal parts.


I don't see high heat listed
 
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Old Jun 14, 2016 | 04:27 PM
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Originally Posted by knottyrope
Detailed Description

Easy-to-use filler can be drilled, filed, sanded and painted. Forms a long-lasting, metal-tough bond. Works on metal, wood, and concrete. Excellent adhesion to galvanized metal. Repairs cracks or porosity leaks in cast metal parts. Fills small holes, cracks, and perforations. Resists water, oil and gasoline.Suggested Applications: Oil pans, stake bed holes, door panels, cast metal parts.


I don't see high heat listed
Dang....

Oh well.
 
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Old Jun 14, 2016 | 04:29 PM
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Good to hear it worked for you.
 
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Old Jun 14, 2016 | 04:30 PM
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Originally Posted by Jarrett Campbell
Dang....

Oh well.
Have a machine shop surface them
 
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Old Jun 14, 2016 | 11:55 PM
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I hove not pulled mine apart yet. I hope there isn't any issues. It does not leak but its good to know its in good shape.
 
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