Cracked Trans Housing - Ford Powerstroke Diesel Forum
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Old 02-20-2012, 11:11 PM
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Cracked Trans Housing

So long story short, i drove home from school 2 hours away and when i got home was letting the turbo cool down, so walked inside to say hi came out and the truck was pissing out transmission fluid. This happened about a month ago but not as bad, it was the gasket in between the transmission and the transfer case. So i got it towed back to that show cause i thought they just screwed it up or something. Turns out i cracked my tranny housing towards the tail end. My tranny guy said thats where that most pressure is in the trans cause thats where reverse is. Also told me it couldve been from pulling a trailer or something along those lines. Well i havent pulled a trailer in quiet awhile and im skeptical why this happened but my question is has this happened to anyone else? Cause if theres reasons why it cracks there id like to know about it and what i can do to prevent it
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Old 02-21-2012, 04:09 AM
Is it even worth it???



 
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I've done it 3 times!!

I would bet money, that it's cracked across the top of the case, about 6-8 inches from the flange where the transfer case adapter bolts on.

Tell the shop you have it in, that they need to check for any, and every possible source of driveline vibration. That means u-joints (on both driveshafts) and also to check for pinion and carrier bearings issues on both axles.

What causes this is the fact that the transfer case does not have a mount, but hangs from the back of the transmission. Any driveline vibration causes the transfer case to vibrate, as well, and over time the aluminum transmission housing work hardens, and finally cracks.
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Old 02-21-2012, 09:24 AM
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does anyone make an aftermarket bracket that would keep that from happening?
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Old 02-21-2012, 10:48 AM
Is it even worth it???



 
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Not that I know of, but I haven't really researched that either... would be nice.
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Old 02-21-2012, 11:26 AM
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Yeah definitely, but my mechanic did go through my u joints and he said he couldnt find any that are bad but i do know that in my front axles the axle seals are bad, would this effect it at all??
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Old 02-21-2012, 11:40 AM
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But now i think about it my hubs are always unlocked so that part of the axle isnt spinning so i dont think it would effect it
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Old 02-21-2012, 12:20 PM
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Never cracked a tranny housing in 1.5 million miles...
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Old 02-21-2012, 01:10 PM
Is it even worth it???



 
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I've killed 3...

First one, had a bad u-joint in the rear driveshaft, had a vibration, that I couldn't find with the driveshaft in the truck, and finally killed the truck.

Second one, u-joints were ok, but I think that the bad u-joint (it was the rear) got the pinion bearings along with the transmission the first time around, another cracked case was the result of vibrations coming from the bad u-joints... pinion was pulling back in the housing and bouncing off of the carrier.

Third one was my own fault, didn't get the pinion torqued correctly when I put new bearings in, and those vibrations came back. Haven't torn it apart yet on this time, but I'm sure I need pinion bearings along with a transmission.
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Old 02-21-2012, 07:18 PM
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I wish i could say i didnt crack my transmission
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