Breaking rear housing on tranfer case!!!!

[DINOONE]

I have a friend that keeps breaking the housing that the drive shaft goes into on the transfer case. (Please see picture) He's broken 4 so far they last only a month. Can anyone give me a reason why this could be happening and any ideas on how to fix it.... It's really pissing us off. Also he has a SCT tuner that is making his truck buck.....

[toylet]

the drive shaft might be out of balance

[elibenson]

Originally Posted by toylet

the drive shaft might be out of balance

That's the only thing I can think. I had a bad carrier bearing causing vibration on one truck where the tail housing cracked. The other truck that i have seen with a cracked (completely disintegrated) was due to a bad u-joint.

[skanj0]

Originally Posted by DINOONE

I have a friend that keeps breaking the housing that the drive shaft goes into on the transfer case. (Please see picture) He's broken 4 so far they last only a month. Can anyone give me a reason why this could be happening and any ideas on how to fix it.... It's really pissing us off. Also he has a SCT tuner that is making his truck buck.....

Is the truck lifted? If so, how much and what size tires? Also, is it a reg cab, xcab, ccab and is it a LB or SB? Carrier bearing in stock position or lowered?

I'm wondering about overall driveshaft angle and length.....

[Tony V]

yeah if its lifted that would cuase a prob if not shimmed. Also does he have vibrations while driving?