Gear Drive Vacuum Pump
The vacuum pump is designed to aid the engine in maintaining a proper vacuum level for accessories. This is accomplished by using either an electric or a mechanical vacuum pump.
The gear driven vacuum pump is a diaphragm pump which requires no periodic maintenance. It is driven by a cam inside the drive assembly to which it mounts. The drive housing assembly has a drive gear on the lower end which meshes with the camshaft gear in the engine. This drive gear causes the cam in the drive housing to rotate. The drive gear also powers the engine oil lubricating pump.