Thanks for the information! I tried to find the pressure needed before I hooked it up. Someone posted to use 1-2 bar. ARB uses 90psi. I hope I didn't blow out the diaphragm. The locker engages well and I can just barely feel air coming out the vent. I'll try to find a new diaphragm. It sounds like I might be able to re-seal the one I have if it has a small leak at the edge. I think I'll find a factory compressor and ditch the regulator.

'89 Raider Diesel, ARB front, '96 Montero SR disk/locker rear axle & front brakes, 2.5" ss exhaust.