Great IWE write up

[bodabdan]

Found this on another forum, great overview of the IWE and troubleshooting the system.

Everything You Wanted To Know About The IWE System...And Then Some - Blue Oval Trucks

When the system is working correctly, vacuum is placed on the system unlocking the hubs while the truck is running. When shifting to 4WD vacuum is released, locking in the hubs. A vacuum leak at any part of the system … Continued

www.blueovaltrucks.com

 

[Ellison Brown III]

Sweet… thanks for the info. I’ll look it over. Had an issue not long ago with mine. Put a hand vacuum pump on each IWE, and got it to fully disengage (axle won’t spin when spinning the front wheels). So, that proved the IWE’s were working. Then I went up to the top to pull tube off solenoid… no vacuum. Replaced the solenoid. Seemed to do the trick. I haven’t been driving the truck much after that (a lot of out of town work travel). The next time I get home I have to do an oil change… once it’s up on the lift I’ll check out the components mentioned in that article to make sure I didn’t overlook anything. Thanks again.