Description

The ARB Air Locker is a replacement differential carrier that can either operate as a conventional differential, or lock both rear (or front) axle shafts together allowing maximum drive torque to be transmitted to both wheels. The locking function is controlled from the vehicle dashboard by the driver. Front axle Air Lockers can be locked when traversing slippery surfaces giving maximum traction, or unlocked on high traction surfaces to retain full control of the steering. As a safety feature, the front differential cannot be locked unless the rear differential has first been locked.

Since the Air Locker is pneumatically actuated, an onboard compressor, or other air supply, is REQUIRED. ARB recommend ARB Air Compressors (CKMTA12, CKMA12 or CKSA12).The air compressor is started with the air compressor switch, and a pressure switch maintains the air pressure in the reservoir between 585kPa [85psi] and 690kPa [100psi]. When the Air Locker switch is operated, the relevant pneumatic solenoid valve opens, allowing compressed air down the line to the differential.

When the Air Locker switch is turned off, the solenoid valve closes the port from the compressor, and opens the exhaust port allowing the air in the differential to be exhausted. The return springs force the clutch gear back to its original position, disengaging the clutch gear from the splined side gear, freeing the internal gears so that they can once again provide the same normal differential action as the original open factory differential.