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I was wondering um this may be a dumb question but anyways. 4x4's all have to diffs right so if one is messed up then can you drive with one off course only in two wheel drive if anything but if you can which I believe you can, does it depend on whether it is front wheel or rear wheel?
Thanks for taking the time to answer my questions.
 

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If you blow front end, unlock hubs and drive in 2X4 fine.
If you blow rear end, disconnect rear drive shaft and drive in 4X4 hi (front wheel drive). Some funny driving characteristicts(sp?) tho, especialy if you have limited slip or locker in the front axle.
 

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If you blow a rear driveshaft (for example). You can usually put it into 4wd, and still get home on the front axle (providing its a part-time t-case)

Now, depending on what rear end, and how you blow it, will determine if you can still get home. If an axle shaft snaps and a wheel falls off... well... you won't be getting home on the front axle alone. Full-floating rear ends and those that have the bearing pressed onto the axle shaft itself (Ford 9" comes to mind) are fairly resilient and will usually keep right on rolling even after internal breakage, and you can front-wheel-drive it home.
 

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The big question is what is screwed up.
Eg: you break a spider gear. Parts from the gear go into other gears, breaking them. Then a part gets into the ring gear and suddenly your rear axle locks up, breaking your axle shafts and possibly causing an accident. Your $23 gear just got a lot more expensive.

IF you have manual locking hubs you can disengage them to prevent this, but a lot of new rigs don't come from the factory with manual hubs. I know a few hard core guys who have manual hubs front and rear so they can limp home with a broken axle shaft or gear.

Reminds me of the story of the helpful girlfriend who saw the guys turning the hubs on the front axle so she turned the ones on the back. :D it was hours of frustration later before her boyfriend realized he was running in front wheel drive.
 

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Rogue Bronco said:
If you blow front end, unlock hubs and drive in 2X4 fine.
If you blow rear end, disconnect rear drive shaft and drive in 4X4 hi (front wheel drive). Some funny driving characteristicts(sp?) tho, especialy if you have limited slip or locker in the front axle.
This was assuming driveshaft failure (most common for me:D)
If it is internals(gears/spiders), it's best to find alternate ways of gettin it home, unless, as u2slow stated, its an axle shaft and you've got a full floater.
Full time case should work equaly well if in 4X4LOCK. You'ld have to disconnect front shaft if front end problems tho.
 
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