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Power Strokes 1994-1997 Upgrades and Aftermarket Upgrading or adding OEM or aftermarket equipment to your 1994-1997 Ford F-Series with Power Stroke engine.

Thread: Locking hub recommendations? Reply to Thread
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  Topic Review (Newest First)
03-22-2019 11:01 AM
Steve83 All original Ford mechanical hub locks were made by Warn, and they're in the photo I posted.

BTW
The TSB in this caption describes the problem & fix that bugman mentioned:


(phone app link)


But I don't think it applies to solid front axles.
03-22-2019 01:48 AM
ArcticDriver I misunderstood as well that it was being said they unlock every time.

Now it makes more sense.
03-21-2019 11:18 PM
MontanaCowboy I remember that Warn used to make mechanical auto locking hubs but I cannot find them for this particular vehicle.
03-21-2019 11:15 PM
Steve83
Quote:
Originally Posted by bugman View Post
No one said that they unlock every time...
Well, yeah someone did.
Quote:
Originally Posted by tbeck View Post
...we all arrive at the same conclusion- when rocking, the hub cycles from lock-unlock-lock and so forth.
And your previous post seemed to suggest you thought so, too. If that's not what you meant - then at least you & I agree that they don't.
03-20-2019 10:33 AM
bugman No one said that they unlock every time but they have been known to unlock.

Plus I have seen 4x4 vehicles stuck in one place even after having the 4x4 engaged with auto hubs because the front end won't move.
03-20-2019 10:12 AM
Steve83 Anything can malfunction - especially when neglected, like auto hub locks usually are. But the pure-automatic hub locks are designed to lock only when the axleshaft is driving them. Generally, the truck will roll because of the rear wheels. But the fronts will lock even if the rears are slipping and the fronts aren't rolling. They only unlock if the axle is NOT driving them, and the truck moves the opposite direction of the last time the fronts were driven. They do NOT unlock every time the truck changes direction.
03-20-2019 09:40 AM
bugman Automatic hubs have minds of their own at times.

I have seen them unlock in reverse even with the switch and even the levers in 4x4 mode.

And as Buffalohead mentioned I have had them engage at higher speeds 5 miles after you have put the switch or lever into 4x4 mode. One time that happened I thought that the whole front end was coming apart or that I had hit a brick wall.

I have never trusted them and I have owned and have been driving 4x4 vehicles since the early 70's both personal and on the job.
03-20-2019 12:47 AM
Buffalohead1 I’ve had them engage for no reason on dry pavement. Life gets very interesting at 60 MPH when that happens. Then you hope the next offramp has clean restrooms
03-20-2019 12:33 AM
bugman In order to unlock the hubs you would back up a bit.

Also to lock the automatics in you had to be moving. If you got stuck and couldn't move the front end you were done for.

I have also seen them unlock when backing up even when the transfer case was engaged in 4x4.
03-20-2019 12:21 AM
ArcticDriver Reverse disengages auto locking hubs?

Is that only on these 94-97?

I don't have it on my 2000 & 2002 and I used the auto locking all the time and prefer it to manual hubs.

Sure sounds like a knuckleheaded design to have reverse disengage a hub.
03-19-2019 11:29 PM
Steve83 I used to think that, but they don't unlock when reversing in 4WD; only when the hub rolls the opposite direction of the last time it was driven by the (stopped) axle stub. And it takes ~1.5 revs.

And the ones in my pile can be switched to LOCK.
03-19-2019 01:03 PM
tbeck My experience with the auto-locking hubs was poor. Pickup was equipped with them from new. First winter we had LOTS of snow, stuck plenty. SOP is rock it back n forth to get yourself free. Hub fails. New one on warranty. After the 3rd go-round at the dealer to get a hub, they ask me what I'm doing to break them. I say my piece, and we all arrive at the same conclusion- when rocking, the hub cycles from lock-unlock-lock and so forth. Too much weight and power, and BANG! They wouldn't warranty backwards to twist-outs, so I bought a set and they're on the D50 front axle out in the scrap pile. Never had a lick of trouble after.

My $0.02...!
03-17-2019 11:28 AM
Steve83 There are mechanical automatic hub locks, that need NO vaccum or wiring. But IDK if they fit that axle. Study this picture & its caption; then the ones on your truck:


(phone app link)


If you can't find some locally, those are still in my junkpile & for sale. E-mail me through my profile here or on SMN.
03-16-2019 11:38 PM
ArcticDriver
Quote:
Originally Posted by MontanaCowboy View Post
That's what I'm doing now; I just hoped that there was an autolocking hub available.
I am with you, I like the convenience and improved fuel efficiency of the auto locking hubs.

It may be time for you to upgrade to a modern Powerstroke like the 7.3
03-16-2019 08:40 PM
MontanaCowboy
Quote:
Originally Posted by bugman View Post
What's wrong with just leaving your hubs turned in?
That's what I'm doing now; I just hoped that there was an autolocking hub available.
This thread has more than 15 replies. Click here to review the whole thread.

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