positive displacement gear type pump supplies the necessary volume
and pressure needed to prevent engine failure.
The pump consists of a drive
shaft, pump body, drive gear, idler gear, pressure relief valve, and
a pickup screen. The drive shaft is connected to the distributor.
As the pump spins, the gears mesh together. Oil is drawn into the pump body via the pickup screen.
As the oil is squeezed between the gears, the oil is then expelled
into the pressure side of the pump. The relief valve has a check ball
and spring preset to a specific pressure. When the pressure is excessive,
it opens and regulates the output pressure.