Hey everyone, just wanted to start off by saying thanks for all the info on this site, I've read a pretty good bit and learn new stuff all the time. I, like many others on here, am having trouble with my auto hubs. They are not working. And let me say, I'm very used to 4wds, I build offroad jeep and rockcrawlers, but I've never messed with a system like this. Here a picture of my jeep, my 06 f-250s only job is to pull it to the trail, and pull my jon boat to the lake.
Anyway, here's what I've done so far. I have verified that the tcase is working. I pulled the vacuum lines off going to the hubs, and engaged the tcase, and the front d/s spins. I have checked the little vacuum pump by putting it into 4wd. The pump runs for about 45 secs or so, shuts off, then runs again. It did this twice and did not come back on, but I think this is normal, or I just didn't wait long enough for the 3rd cycle. I haven't put a vacuum gauge on the line at the hubs, but that is my next step to see if I have a leak, which I have traced my lines and can't find anything obvious.
Does this sound like it could be the seal on the backside of the unit bearing? I didn't check the fuses, but I'm pretty sure the only fuse in the system is the one running the pump, and the pump is obviously coming on. Anybody have any other ideas of what it could be? Thanks for the help, Clayton.
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