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Another auto-hub question?

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Old Jan 3, 2002 | 09:29 PM
  #1  
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aflashman
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From: Sonora USA
Another auto-hub question?

O.K. so i'm driving through about two feet of virgin snow and i'm kicking ##### in my 95 bronco. Then I end up driving down a dead end road, so I have to back up.....Do the auto-hubs unlock when I reverse even though the light on the dash says 4x4. Or did I just get stuck?????????????


aflashman
 
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Old Jan 3, 2002 | 11:21 PM
  #2  
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oldblue18
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From: Georgia
Another auto-hub question?

It wasn't your driving...anytime you reverse directions with Ford's auto hubs they'll unlock for about 10 feet and then relock. The same goes for when you first put it into 4 wheel drive...you'll roll about 10 feet before the hubs lock.

So, be sure to engage the 4x4 at least 10 feet before you need it. If you wait until you're already stuck before you engage the 4x4 and cannot roll those 10 feet, you'll just be SOL...

This is also how you're supposed to unlock them after you return to 2wd...just back up about 10 feet.

Hope I didn't confuse you more....

Jon
1989 F-150 XL- 4x4, 302, M50D
1995 Bronco Eddie Bauer- 351W, E40D
 
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Old Jan 4, 2002 | 10:11 AM
  #3  
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adelyser
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Another auto-hub question?

Once the autohubs have locked and you are applying power to the front wheels via the front driveshaft, the hubs will remain locked until the front driveshaft stops applying power to the front wheels, whether you are going foward or reverse, or changing directions. I think you just got stuck, as I have ended up in some deep drifts with my Bronco in 4WD, and the front wheels would spin as soon as I tried backing up. The hubs do stay locked when you reverse direction, as long as you are still in 4WD.

Even if you cannot roll 10 feet, the 4WD will still kick in. To test this, put your Bronco in 2WD, climb under it, and turn the front driveshaft by hand. You will find that you can only turn the driveshaft about 1/2 turn, and then you will hear the front hubs lock. You then cannot turn the driveshaft either direction, as the front hubs are indeed locked. This is also how you check the front hubs. If you can continuously turn the front driveshaft, you have a bad hub up front, as long as you have auto-hubs.

According to the manual, you need to drive the vehicle in the opposite direction for 10 feet after disengaging 4WD. Just going backwards won't do it. If you were driving backwards in 4WD and disengaged it, you would then need to drive foward for 10 feet or more to disengage the hubs.

Aaron D.
'94 EB Bronco 4x4, 351W, E40D
'97 Expedition XLT 4x4, 5.4L
 
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Old Jan 4, 2002 | 12:32 PM
  #4  
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Another auto-hub question?

>Even if you cannot roll 10 feet, the 4WD will still kick in.

10 feet is the worst case number, it can kick in anytime before that.
 
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Old Jan 4, 2002 | 03:32 PM
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adelyser
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Another auto-hub question?

You don't have to roll at all for the 4WD to kick in. As soon as the front driveshaft starts turning, your hubs will lock and you're in 4WD. The 4WD is not dependent on the front wheels turning for the hubs to lock.

Aaron D.
'94 EB Bronco 4x4, 351W, E40D
'97 Expedition XLT 4x4, 5.4L


 
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Old Jan 4, 2002 | 07:48 PM
  #6  
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From: NJ
Another auto-hub question?

 
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