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4wd functionality question

Old May 6, 2014 | 10:54 AM
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4wd functionality question

Ok, dumb guy question here. Does anyone see an issue with driving in 4wd with the rear driveshaft removed, effectively making the truck front wheel drive?

I know your first question is "why would you want to do that?". Well, my rear driveshaft blew up. I've got a new one coming, but in the mean time I figure I can just use the front wheels to get around. With the rear driveshaft removed, I don't need to worry about the fact that the NP205 doesn't have a differential right? Thoughts?

Thanks guys.
 
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Old May 6, 2014 | 11:16 AM
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Originally Posted by bryanmartin
Ok, dumb guy question here. Does anyone see an issue with driving in 4wd with the rear driveshaft removed, effectively making the truck front wheel drive?

I know your first question is "why would you want to do that?". Well, my rear driveshaft blew up. I've got a new one coming, but in the mean time I figure I can just use the front wheels to get around. With the rear driveshaft removed, I don't need to worry about the fact that the NP205 doesn't have a differential right? Thoughts?

Thanks guys.
I need to look at the rear of my TC .... but as I recall, the rear drive shaft's most front U-joint is just "U bolt" clamped at a TC flange and if so, it would be OK removed from there.

I'ld just go easy on the throttle as all motive power is delivered through the front and those outer U-joints .... but there'd be no "wind up" issues.

It actually would NOT work if the TC had it's own differential, but since the NP205 doesn't .... it WILL work.
 
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Old May 6, 2014 | 03:35 PM
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Originally Posted by tbear853
I'ld just go easy on the throttle as all motive power is delivered through the front and those outer U-joints ....
Does this mean the front end is weaker?
 
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Old May 6, 2014 | 04:01 PM
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You should be fine driving around like that until you get it fixed. Just don't try to drag race it or anything. I think the point about the axle u-joints is there are more moving parts that can fail in a front end than in a rearend.
 
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Old May 6, 2014 | 04:25 PM
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I've done it before to get back to the trailer after breaking the rear shaft rock crawling. I had a friend drive his dodge 1500 that way for two months. Just be aware that it'll "torque steer" pretty bad if you jump on the throttle. In other words it'll pull hard to one side.
 
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Old May 6, 2014 | 04:33 PM
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You guys rock, thanks.
 
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Old May 6, 2014 | 05:51 PM
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X2 on its ok, just remove the other end of the slip yoke off the back end of the xfer case.

Just loosen the u-joint u-bolts and then remove them too. And yes no front wheel burnouts and you should be ok.
 
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Old May 6, 2014 | 07:18 PM
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From: The Shenandoah Valley
Originally Posted by bryanmartin
Does this mean the front end is weaker?
It's a Dana 44 and while it is good when used within it's purpose, it is not as stout as the Ford 9" out back .... plus in your truck when unloaded, the front carries the most weight .... plus you have two smaller outer U-joints on the ends that are subject to severe angles with steering turned sharply.

That was all I meant.

Like others said, just take it easy, it'll be fine.

I looked at mine, like "77&79F250" said:
X2 on its ok, just remove the other end of the slip yoke off the back end of the xfer case.

Just loosen the u-joint u-bolts and then remove them too. And yes no front wheel burnouts and you should be ok.
 
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Old May 6, 2014 | 08:31 PM
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I drove my old truck just once in front wheel drive and it wasn't fun. It definitely doesn't drive like a front wheel drive car, and definitely different than when in 2wd.
 
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