How To: Find and Diagnose ESOF Hub Vacuum Leaks

[PatriotHauling]

If the Autolock hubs on your ESOF equipped Ford SuperDuty do not lock or engage when you switch into 4x4, chances are you have a vacuum leak. This video will show you, step by step, how to find, diagnose, and to some extent repair the most common causes of this break down in the ESOF system.

http://www.youtube.com/watch?v=MoI-BbisYEs

 

[Dieselboy.]

I got an easier way.... Its called Warn premium hubs

 

[PatriotHauling]

1) If you have a vacuum leak, replacing the hubs wont fix it.
2) I would rather spend $3 on hose than $200 on hubs that GUARANTEE I will have to get out of the truck in the mud.

 

[4duggan]

Guess its habit but if there is any chance I could require my front hubs engaged, I have already got out and done it manually.

I dont know if mine work or not, but I am gonna try it and see.

But like dirty said mine will be replaced w/ warns or milemarkers sooner than later.

Sorry OP, so my question is what do guys do with the vacuum lines when they ditch that setup. Can I get rid of that crap now and just plug those lines and the hole they feed into the hub ?