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Feb 2, 2014 | 02:24 PM

ROKRAWL

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np205

Driving today I noticed my front driveshaft spinning. I was in 2wd high, pulled over and verified. My hubs were unlocked. Why would this happen? Does my t case need rebuilt?

Feb 2, 2014 | 02:29 PM

co425

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Does your front drive shaft spin freely when parked? My front shaft slowly rotates when unlocked in 2hi.

Feb 2, 2014 | 04:34 PM

PA F250

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How did you see the front driveshaft spinning while driving? Sounds like you need new floor pans.

I'm guessing it is due to minor frictional forces back feeding through your hubs or T-case. If you were able to provide some resistance it would probably stop spinning.

Feb 2, 2014 | 07:02 PM

1972RedNeck

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Joined: Feb 2011

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From: Townsend, MT

If I get the sun just right I can see the shadow. The colder it is outside, the faster it spins.

Feb 2, 2014 | 07:12 PM

gatorfor88

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From: Panama City

That last post lost me

Feb 2, 2014 | 07:18 PM

tbear853

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Joined: Feb 2004

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From: The Shenandoah Valley

Quote:

Originally Posted by 1972RedNeck

If I get the sun just right I can see the shadow. The colder it is outside, the faster it spins.

I'm guessing that it's very early morning or very late evening when the sun is very low that you noticed this ... It's not unusual.

The colder it is outside, the colder the transfer case is and the colder the lube in the 205 is, and the thicker the already thick lube (in a NP-205) becomes, the more "windage" whipped up by rotating internals in the transfer case leading to front shaft rotating.

Feb 2, 2014 | 09:01 PM

PA F250

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Oh, I see. The shadow. Guess that's what I get for having a truck but never having driven it yet. Lol. Hopefully that will finally change this summer.

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Feb 3, 2014 | 06:42 AM

ROKRAWL

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Joined: May 2003

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Quote:

Originally Posted by PA F250

I can see the driv3shaft through my shifter hole in the floor. I havent gotten around to fabbIng and installing a boot yet. Would you say the friction is causing a problem or is something you would not worry about?