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Eliminate Auto lock hubs?

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Old Nov 17, 2008 | 03:45 PM
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Eliminate Auto lock hubs?

Has anyone figured out how to eliminate the auto locking hubs from locking when putting her in 4x4 low or high? My delivery van was totalled by one of my employees and I am now need to have one of my employees drive my truck. He needs to make deliveries on one of those very steep San Francisco hills and my clutch is getting that burning smell when he gets back. So I thought maybe if I can get it into 2x low he wouldn't burn up my clutch. This is for the ESOF system.
 
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Old Nov 17, 2008 | 04:12 PM
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Unplug the hub solenoid that opens the vacuum valve to the hubs, or unplug the vacuum lines off the hubs and plug the lines so your air vent controls will work.
 
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Old Nov 17, 2008 | 04:31 PM
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Or, just unplug the electrical connector to the vacuum solenoid - no need to plug anything.
 
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Old Nov 17, 2008 | 04:35 PM
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Originally Posted by krewat
Or, just unplug the electrical connector to the vacuum solenoid - no need to plug anything.
That was my first suggestion, although you made it clearer.
 
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Old Nov 17, 2008 | 04:52 PM
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Go to home_page_full_pull_towing, they make a kit that mounts a switch on the dash that lets you engage low range without engaging the auto hubs.
 
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Old Nov 17, 2008 | 04:59 PM
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I can do that anytime I want. I just don't get out of the truck and lock my Warns...
 
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Old Nov 17, 2008 | 05:00 PM
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Thanks guys. Seems more simple than I thought. I like the full power towing switch. Looks full proof.
So where exactly is the vacuum solenoid and the electrical connector?
 
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Old Nov 17, 2008 | 05:02 PM
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Would it work if you took the power to the auto hub solenoid through a relay controlled by one of your upfitter switches? I'm thinking normal operation (4x4) through normally closed contact on the relay, then when you put power to the relay, it drops out the auto hubs but the transfer case will still pull in with the 4x4 switch. Sound do-able?
Jim
 
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Old Nov 17, 2008 | 05:06 PM
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Originally Posted by tazo
Thanks guys. Seems more simple than I thought. I like the full power towing switch. Looks full proof.
So where exactly is the vacuum solenoid and the electrical connector?
Sorry, not that familiar with the newer trucks, mine is mounted on the fender well on the right side.

Originally Posted by jsimon724
Would it work if you took the power to the auto hub solenoid through a relay controlled by one of your upfitter switches? I'm thinking normal operation (4x4) through normally closed contact on the relay, then when you put power to the relay, it drops out the auto hubs but the transfer case will still pull in with the 4x4 switch. Sound do-able?
Jim
Sounds like it should work fine, turn off the soleniod, turn on the ESOF and it should work.
 
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