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Old 02-01-2012, 02:17 PM   #1
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Default Driving without front driveshaft?

I damaged my transmission crossmember and my truck is vibrating quite a bit now. I was told it's likely the driveshaft angles, and while I wait for a replacement crossmember, I would like to remove the front driveshaft to see if the truck is drivable in RWD only. Is there anything to it or do I just disconnect the joints and that's it. Without the front shaft what should the transfer case be in? 2wd, 4wd part time?
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Old 02-01-2012, 02:29 PM   #2
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Yea, you can pull it. Not a problem. I don't know if angle is your problem though. Was me I'd be curious if whatever bent my cross member didn't to something to make my rear drive line "untrue".
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Old 02-01-2012, 02:29 PM   #3
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you are fine to remove it and drive as you please. Obviously without a front d-shaft installed there will be no 4wd... so yes you can shift it into 4wd it won't really hurt anything but your only gonna have 2wd... (duh)
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Old 02-01-2012, 02:50 PM   #4
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What is the difference between 4wd full time and 4wd part time? I was under the impression that there was a center diff and that part time locked it where as full time left it unlocked, hence driving in full time without a front shaft would wreck something in there. Anyways as long as it's left in 2wd it should be fine right? What about the output shafts? Are they held in somehow or can they pop out without the shaft and loose all the diff/tc fluid?
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Old 02-01-2012, 03:14 PM   #5
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The front one is held in by the yoke
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Old 02-01-2012, 03:40 PM   #6
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Quote:
Originally Posted by norco kid View Post
What is the difference between 4wd full time and 4wd part time? I was under the impression that there was a center diff and that part time locked it where as full time left it unlocked, hence driving in full time without a front shaft would wreck something in there. Anyways as long as it's left in 2wd it should be fine right? What about the output shafts? Are they held in somehow or can they pop out without the shaft and loose all the diff/tc fluid?
2wd only engages the rear driveshaft leaving the front diff and front driveshaft allowed to freewheel. PT 4wd engages the front axle, and FT 4wd both axles are engaged but the transfercase just changes the gear ratio. there is not "center diff" just front diff, rear diff, and transfercase. and no, the driveshaft doesnt hold the yokes in place, as mentioned earlier removing the front driveshaft just doesnt allow you to have 4wd part or fulltime. hope that answer your question.
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Old 02-01-2012, 06:29 PM   #7
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You might want to go ahead and replace the transfer case mount when you replace the crossmember. If you hit it hard enough to bend it, I would be willing to bet you broke the mount. They are about $11 from Rock Auto. Anyway, as the others stated, you will be fine without a front driveshaft in 2H.
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