Locker air line blowing oil

[The BAD Influence]

On a recent trip the air compressor would cycle every 10-12 seconds if I had the rear locker on. I generally turn the locker off as soon as I get over an obstacle. This trip was with a big group, so I was waiting longer times before attempting the climb.
A buddy broke down so while he was getting fixed, I took the opportunity to inspect the rear line. The fitting was lose. I tightened everything up, but as soon as we were back on the trail the compressor would again cycle every few seconds, if the rear locker is activated.
I checked the diff fluid, it's just below the fill level.

 

[Ddays]

If your compressor is cycling frequently you have a leak somewhere. Could be a bad seal in the locker itself allowing fluid to back up into the line.

 

[Slimebones]

On a recent trip the air compressor would cycle every 10-12 seconds if I had the rear locker on. I generally turn the locker off as soon as I get over an obstacle. This trip was with a big group, so I was waiting longer times before attempting the climb.
A buddy broke down so while he was getting fixed, I took the opportunity to inspect the rear line. The fitting was lose. I tightened everything up, but as soon as we were back on the trail the compressor would again cycle every few seconds, if the rear locker is activated.
I checked the diff fluid, it's just below the fill level.

Spray soapy water at all connections to determine if it is an external leak. Leaks will bubble of coarse.

 

[WJCO]

On a recent trip the air compressor would cycle every 10-12 seconds if I had the rear locker on. I generally turn the locker off as soon as I get over an obstacle. This trip was with a big group, so I was waiting longer times before attempting the climb.
A buddy broke down so while he was getting fixed, I took the opportunity to inspect the rear line. The fitting was lose. I tightened everything up, but as soon as we were back on the trail the compressor would again cycle every few seconds, if the rear locker is activated.
I checked the diff fluid, it's just below the fill level.

If you can reach the end of the diff breather hose and hear/feel air coming out of it when locker is engaged, then something inside the differential housing is leaking air.