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Old 11-23-2005, 11:01   #1 (permalink)
jna2kgt
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F-250 4WD problem.....

I just bought a 96 F-250 and I noticed a slight problem. When I lock
the hubs and put into 4H it runs fine for about 5 miles or so. After
that, every time I take a somewhat tight turn at speeds of 10mph or
less, it feels as if it sticks and shimmies real bad. Enough to bring
the truck to a stop. It is fine in a straight line. when I unlock the
hubs and put it into 2WD it does it for about a minute, then it is all
fine. What gives? Thanks for any help.

J

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Old 11-23-2005, 11:01   #2 (permalink)
David M
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Re: F-250 4WD problem.....

On Wed, 23 Nov 2005 10:01:27 -0800, jna2kgt rearranged some electrons to
form:

> I just bought a 96 F-250 and I noticed a slight problem. When I lock
> the hubs and put into 4H it runs fine for about 5 miles or so. After
> that, every time I take a somewhat tight turn at speeds of 10mph or
> less, it feels as if it sticks and shimmies real bad. Enough to bring
> the truck to a stop. It is fine in a straight line. when I unlock the
> hubs and put it into 2WD it does it for about a minute, then it is all
> fine. What gives? Thanks for any help.
>
> J


Windup in the driveline is causing your
problem. Stop using 4WD on dry pavement and you'll be fine.

--
David M (dmacchiarolo)
http://home.triad.rr.com/redsled
T/S 53
sled351 Linux 2.4.18-14 has been up 6 days 14:47

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Old 11-23-2005, 11:01   #3 (permalink)
jna2kgt
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Re: F-250 4WD problem.....

Ahhh, thanks! So your saying this would happen. :)

http://www.4x4abc.com/4WD101/axle-wind-up.html

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Old 11-23-2005, 17:01   #4 (permalink)
The OTHER Kevin in San Diego
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Re: F-250 4WD problem.....

On 23 Nov 2005 10:55:37 -0800, "jna2kgt" <stickylifter@gmail.com>
wrote:

>Ahhh, thanks! So your saying this would happen. :)
>
>http://www.4x4abc.com/4WD101/axle-wind-up.html


Pretty much.. I had a transfer case on a 4Runner let go at about 60
mph. No, I wasn't in 4WD and the front hubs weren't locked. Output
bearing failed, turned red-hot, melted and then seized. Peeled the
back of the xfer case off, dropping the front yoke of the driveshaft
onto the pavement.

The rear of the truck jumped (according to the guy driving behind me)
about 4' in the air and the driveshaft disintegrated and flung chunks
of metal all over the place. Biggest piece I found was the front yoke
and about 3" of shaft twisted into a cone off the back of that.

Transfer case oil caught fire and luckily I had a water bottle with me
to put it out. Destroyed the ring gear in the rear diff as well.
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Old 11-27-2005, 14:01   #5 (permalink)
Ulysses
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Re: F-250 4WD problem.....


"jna2kgt" <stickylifter@gmail.com> wrote in message
news:1132772137.272480.16030@g44g2000cwa.googlegroups.com...
> Ahhh, thanks! So your saying this would happen. :)
>
> http://www.4x4abc.com/4WD101/axle-wind-up.html
>


Since you say you lock your hubs I'm assuming they are manual. I back up a
little even with manual hubs to make sure they are disengaged. When I first
installed them and rotated the wheels it felt like they were still engaged
after unlocking them until I rotated the wheel about 2/3s of a turn.


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Old 11-27-2005, 21:01   #6 (permalink)
Matt Macchiarolo
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Re: F-250 4WD problem.....

That or busted driveshafts & U-joints. Part time 4wd is not intended for
street use.

"jna2kgt" <stickylifter@gmail.com> wrote in message
news:1132772137.272480.16030@g44g2000cwa.googlegroups.com...
> Ahhh, thanks! So your saying this would happen. :)
>
> http://www.4x4abc.com/4WD101/axle-wind-up.html
>



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