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Jan 23rd, 2013
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4X4 Manual Locking Hubs #12531527
12/08/17 05:00 PM
12/08/17 05:00 PM
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Oeste Del Tejas
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Samsonsworld Offline OP
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OK, I have a dumb question. When I bought my truck, I noticed manual locking hubs on the sticker. After inspection, you turn the hubs one direction and it's on AUTO. The other way says LOCKED. If it's automatic, what's the point of having a manual lock option???

Re: 4X4 Manual Locking Hubs [Re: Samsonsworld] #12531734
12/08/17 07:14 PM
12/08/17 07:14 PM
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redchevy Offline
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For when AUTO breaks.

Re: 4X4 Manual Locking Hubs [Re: Samsonsworld] #12531999
12/08/17 11:51 PM
12/08/17 11:51 PM
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Never had a failure on my prior 5 autos. Can't be common. Never experienced it during my Jeeping years. Anybody experience different?

Re: 4X4 Manual Locking Hubs [Re: Samsonsworld] #12532174
12/09/17 03:41 AM
12/09/17 03:41 AM
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redchevy Offline
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Keep one for a number of years as far as I know they all have a bad reputation about going out.

Re: 4X4 Manual Locking Hubs [Re: Samsonsworld] #12532212
12/09/17 04:35 AM
12/09/17 04:35 AM
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Magnolia, TX
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I had Ford auto-lock hubs go out multiple times. The worst is when it breaks while lockeds in and won't release. You can't drive like that on pavement to get home without trashing a drivetrain, so it has to go on a flatbed. I also had them fail to lock IN as well. I've not had a 4x4 Chevy, so can't speak to their track record.

Re: 4X4 Manual Locking Hubs [Re: Samsonsworld] #12532410
12/09/17 02:43 PM
12/09/17 02:43 PM
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collin county tx
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the locking hubs is to lock the axle to the hub. when the hubs are unlocked it does not turn the ring and pinion or the driveshaft. this reduces wear on the drive train. when the hub is locked it allows the axle to drive the hubs or the front wheels. the only bad thing about manual hubs is you have to get out and lock them or you have no front axle drive.

Re: 4X4 Manual Locking Hubs [Re: redchevy] #12532536
12/09/17 04:17 PM
12/09/17 04:17 PM
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Jack County
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Originally Posted By: redchevy
For when AUTO breaks.


Yep, this. ^^^^^^

Four wheel drive hubs have come a long way since the first auto lock hubs, which were somewhat troublesome. My 1983 K30 had auto locks from the factory, and like a box of chocolates, you never knew what you would get when you shifted in and out of 4wd. Those early one like that were the ones that had a little spring clutch setup in them, and you drove either forward or backward after shifting them to engage them. When disengaging, you shifted, then drove the opposite direction to unlock them. This is where the problems usually happened, and one or both would not un lock. If just a little bit of the wrong grease got in the wrong place, the hub would stick, and not unlock. The newer autos are pretty reliable, and most use a vacuum to engage. The manual position will override the auto in the event the auto fails. My last three trucks had these, and they have always worked. The older ones are easily converted to manual hubs, and it is well worth it.

Re: 4X4 Manual Locking Hubs [Re: Samsonsworld] #12532567
12/09/17 04:42 PM
12/09/17 04:42 PM
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When a squirrel eats your vacuum line, you will be glad for the manual system as a backup.

Re: 4X4 Manual Locking Hubs [Re: Samsonsworld] #12532801
12/09/17 09:48 PM
12/09/17 09:48 PM
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Boss has about 360k miles on his f250 with manual hubs. In the 7 years that I've worked with him we have had to use the manual lock 2 times on the job and he had the whole system professionally rebuilt after the first time.

Re: 4X4 Manual Locking Hubs [Re: Samsonsworld] #12534257
12/11/17 01:28 PM
12/11/17 01:28 PM
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Well, I guess I learned something.

Speaking of squirrels, we've had several fleet vehicles chewed up. Finally installed an ultrasonic noise repellent device on each vehicle. No problems since.

Re: 4X4 Manual Locking Hubs [Re: Samsonsworld] #12534342
12/11/17 02:43 PM
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Care to share a link or details on said device? Recently had a fit getting our bulldozer running that sits outside after rats chewed some wiring and don't care to do that again!

Re: 4X4 Manual Locking Hubs [Re: Samsonsworld] #12534381
12/11/17 03:27 PM
12/11/17 03:27 PM
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Re: 4X4 Manual Locking Hubs [Re: Samsonsworld] #12534468
12/11/17 04:48 PM
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Thanks

Re: 4X4 Manual Locking Hubs [Re: Samsonsworld] #12534475
12/11/17 04:56 PM
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Welcome.

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