Vacuum Pump

Vacuum pump provides vacuum for operating emission control components (some "C", "G" and "K" series vehicles), cruise control and A/C-heater servos. The vacuum pump is driven by either a belt or gear.

The belt-driven vacuum pump is mounted on right front of engine. Except for the pulley, vacuum pump is replaced as an assembly.

The gear-driven pump is mounted on the top rear of engine and contains a permanently-mounted speed sensor. Pump is driven by a cam inside the drive assembly to which it mounts. On the lower end of the drive housing assembly is a drive gear which meshes with the camshaft gear in the engine. The drive gear causes the cam in the drive housing to rotate.