A pneumatic pump designed, depending on the version, to feed oil to Bijur's resistance (SLR) or volumetric (PDI) lubrication systems.
The Airmatic is a single action pump piloted by a 3/2 way solenoid. The oil discharge is realised by introducing compressed air into the pump. Oil is sucked from the reservoir as the compressed air in the circuit decompresses with the aid of a return spring. For use with volumetric injectors the pumps is equipped with a decompression block which permits the rearming of the injectors whilst the air circuit is decompressing.