Oil Pump: Description and Operation

The rotary gear-type pump, which develops the oil pressure, is installed and operates as follows:

- Oil pump is attached to the engine front cover.

- The pump driven gear is rotated by the distributor shaft through an oil pump intermediate shaft.

- A full flow oil bypass filter (oil filter) is externally mounted on the engine front cover.

- Normally all engine oil passes through the oil bypass filter element.
However, if the element should become restricted, a spring loaded bypass valve will open, allowing an uninterrupted flow of oil to the engine's moving parts.