Thread: ARB compressor going on and off with locker engaged

ARB air leakers, eh? Wouldn't touch them myself, too many problems compared to the gold standard Ashcroft ones. Friend of mine drove up to the Maralinga Lands recently and another guy snapped his leaker spool in half on a sand dune. That was a towing trip to remember.

I'm no expert - I understand air lockers work on positive pressure to activate them - so it sounds like you've got an air leak in the line between the rear locker and switch/on valve.

Originally Posted by bee utey

ARB air leakers, eh? Wouldn't touch them myself, too many problems compared to the gold standard Ashcroft ones. Friend of mine drove up to the Maralinga Lands recently and another guy snapped his leaker spool in half on a sand dune. That was a towing trip to remember.

I'm only using them as they were in a D2 I parted out. And for the price to set it all up it was to good to let go

Originally Posted by SPROVER

I'm only using them as they were in a D2 I parted out. And for the price to set it all up it was to good to let go

The lockers are good, the Ashcroft fanboys always come out. Just find the airleak, start with the fittings and detergent. then the air compressor tank depending on the vintage and then check the axle breathers to see if its from within the lockers.

Originally Posted by Slunnie

The lockers are good, the Ashcroft fanboys always come out. Just find the airleak, start with the fittings and detergent. then the air compressor tank depending on the vintage and then check the axle breathers to see if its from within the lockers.

Will do. Thanks for that. I'll test for leaks.

Take heart mine has been fine for years without any issues so once it’s sorted it’s ok

I had twin ARB on my old defer, worked perfectly, yeah the rear used to suck the smallest amount of oil when disengaging...like very small mist.

I had an air reservoir and never experienced the compressor cutting in and out....I.e. loosing pressure.

Check everything external first, it would be strange for both lockers to have big internal leaks..

Ok an update. I tested the connections with soapy water and couldn't see any bubbling. Then with just the ignition on and compressor switched on I tried to engage the rear locker. That's when I could hear a slight hissing. It sounded like it was coming from the diff breather on top of the diff.
So does that mean it is a diff out job to fix it? And what would be the cause of it?
Thanks
Chris