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Old 09-01-2010, 06:43 PM
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Stupid Questions

I've searched all over the place and cannot find anything remotely resembling an answer to the following questions:

First, I have a 2001 F250 4x4 with a touch over 250k on the odometer. Haven't had many issues up until now.

Question 1:

The auto hubs used to have "Auto" and "Lock" embossed on the edge, but those indicators have long since worn out. I had to take my hubs apart a few months ago to clean and regrease the internals (the existing grease was in bad, bad, bad shape). I *think* that if you turn the hubs counter clockwise that brings it to the "Auto" position, but am not sure and can't find jack anywhere telling me this tidbit of information.

Question 2:

I've honestly never paid attention to this, but will the front axle and shaft spin even when you have the hubs in the Auto position and the transfer case in 2wd? I was always under the impression that they would NOT spin in this condition, but mine does. I'm afraid my hubs are in need of replacement. I also think this is the reason I'm getting a weird vibration at a couple of speed ranges that's relatively new.

I told you they were stupid questions. Any help is appreciated.
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  #2  
Old 09-04-2010, 08:37 PM
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to question 1, yes i believe it is turning the dial to the right, but to be sure, look up a picture online to compare, and for question 2, if the transfer case is in 2wd, the front axle is not engaged, so yes both tires should spin, even when engaged to 4wd one of the tires will still spin
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Old 09-04-2010, 09:36 PM
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Turn the hubs clockwise to "Lock",
and counterclockwise to "Auto".


If the hubs are working correctly, then when in 2wd with the hubs in "Auto", the axles should not be spinning.
It sounds like you have bad hub seals on one side that won't let the hub disengage when you switch from 4wd back to 2wd. The hubs need a vacuum signal to engage and also need a vacuum signal to disengage.
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