2008 expy front end grind

[jonny150]

I have a grind in the front end. I know these are vacuum released hubs. Only good info I can find is on f150s. Do these expeditions have a reservoir for the hub actuation? I replaced the vacuum actuator because it was me cracked, still need to get the check valve. Just curious if anyone has a diagram or tell me if there's a component I'm missing.

 

[JExpedition07]

If you search "08 4x4 problem I think" in threads you will come across a recent thread where a member posted a good video from fordtechmakuloco with info pertaining to the hubs and grinding noises associated with them. Our systems are very similar to F150s

 

[ExpeditionAndy]

The actuators are exactly the same as on the F150. The Fordtechmakuloco videos are very good, check out these two videos.

 

[jonny150]

I've seen the video, but thank you! I've read about vacuum reservoirs and 2 check valves. I cannot find that reservoir or the second check valve.