Question about 1991 Ford Explorer

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Front hubs wont engage

The push button 4x4 electronics work...it goes into 4 high and 4 low...
the transfer case is working but the front tires wont lock.I took one of the hubs completely apart and cleaned it but couldnt figure out how they actually lock...does the axel push out into the hub? If so then why would it not be doing that? I would love to know how the hubs are supposed to "automatically lock".

thanx

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  • floydmac Jan 13, 2009

    so is there a way to rig the hubs to fix them? or do you just have to replace them?

  • karldm May 05, 2009

    I am having a similar problem wityh my 4x4 Nissan Pathfinder 1994. The front don't engage when i move the leaver to any 4WD position. The light on the dash comes on indicating that it has engaged. Do you think the auto mechanism needs cleaning?

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There are two parts to the auto-locking hubs. Inner and outer. Both of them have small tabs on each of the 'cams'. Chances are, they are broken off on the outer hub. When you clean them up real good, you can see them. I believe when the axles turn the outer hub, the inner and outer cams push against spring pressure and lock the unit to the wheel hub. These hubs will break when engaged at higher speeds, especially on a dry tar road.

Posted on Jan 11, 2009

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