chans said:
When it leaks it blows air out of the breather and the compressor kicks on 1 to 2 min. It leaked on Friday Then stopped and has not leaked since. I had a similar problem where it would leak when it was cold and seal when the diff was warm. They had to replace a plastic piece in the locker that had four cracks in it...
Ah ha... had you only mentioned that from the start..
So yes, your locker is leaking air into the housing... this can happen in a couple spots, some more likely than others...
1. The O-rings, naturally they cannot contain 100% of the air, having an open, clear axle breather is essential. Obviously it should leak enough to cyle your compressor more than once every 4-10 minutes... When sitting for a while, it is fair to assume that the synthetic o-rings will dry out a but (as well as the seal surface) so leaking may be normal (mine have never done that)...
2. The copper air tubing, I have head of people cracking them by either a crappy install or a crappy part that was installed. Once they are in and hooked up, they should either work, or not work, not intermitent... thus we can eliminate this.
3. The bulkhead fitting... these can leak inside the housing as well as outside of the housing, you may try snugging up the outside fitting and see if that does anything, but once again shouldn't be intermittent, which leads us back to the O-rings...
BTW, what is this locker in?