4wd not engaging! - Ford Powerstroke Diesel Forum
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Old 07-03-2012, 07:14 PM
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4wd not engaging!

So today I went off road and I was going to climb a hill so I put it in 4 low, and it would go slow like its supposed to, but when I tried climbing the hill just the back tires spun, so I thought maybe I need to lock the hubs and still nothin. What do you guys think?


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Old 07-05-2012, 09:07 AM
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Do you have the OEM auto hubs or manual aftermarket. Were you able to tell if the front driveshaft and/or axle shafts / U-joints were turning?

What did it do in 4HI?
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Old 07-05-2012, 03:45 PM
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Quote:
Originally Posted by madpogue View Post
Do you have the OEM auto hubs or manual aftermarket. Were you able to tell if the front driveshaft and/or axle shafts / U-joints were turning?

What did it do in 4HI?
Ok so the hubs say "super winch" and there manual, also the driveshaft spins when it's in 4 hi and 4 low, and when it's in two wheel drive the axle does not spin. When it's in 4hi it's just like its in 2wd.


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Old 07-05-2012, 04:12 PM
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Okay, try this. Keep it in 2HI, and lock both hubs, and get a friend to help you. One gets way down on the ground looking at the truck from the front while the other drives forward slowly (from a safe distance ). Look for both U-joints turning. If either one isn't turning, that hub isn't locking. And thinking it through, even if one hub isn't locking, since the front diff is "open", it would just spin that axle shaft and not the other one, and you'd have no front drive.

Those are def. aftermarket hubs.
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Old 07-05-2012, 04:53 PM
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Both the u-joints are spinning. What else could it be???


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Old 07-05-2012, 05:06 PM
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if the drive shaft and axle u joints are spinning it may be a hub issue


here is how you can tell if the transfer case is spining all that stuff or if the hubs are spinning it and the transfer case isn't

put the transfer case in 2 hi and lock the hubs drive around for a second ...
get out(truck can be off for safety ) and try to spin the driveshaft it shouldn't turn with the hubs locked

you can also verify each hub by turning the u joints by each steering knuckle the parasitic load can turn both axles even if one does not lock ,, that is why you check each knuckle
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Old 07-05-2012, 05:19 PM
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So I found out that the left hub is not working cause when both hubs are locked and In 4wd the left u joint spins, but the tire doesnt and the right u joint doesn't spin at all. Is it hard to take the hub apart?


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Old 07-05-2012, 05:48 PM
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Yup, exactly what I described, one shaft is turning and the diff is opening up. The hub might have a lifetime warranty. Might not be transferable, though. Worth contacting the mfr. Otherwise, a fresh pair of Warn or Mile-Marker hubs would fix er up good.
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Old 07-05-2012, 05:56 PM
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you will need the special socket to remove the spindle nuts, but they are not hard just time consuming especially if you haven't done one before
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Old 07-05-2012, 06:01 PM
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u don't need to pull the "spindle" nut to pull the Hub on these do you ? I know on mine you just pull the hub
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