Engine Lubrication: Description and Operation

Lubrication

Oil Flow:

Description
The full flow lubrication system uses a gear type oil pump driven from the crankshaft. The assembly is integral with the timing cover which also carries the full flow oil filter, oil pressure switch and pressure relief valve.

Operation
Oil is drawn from the pressed steel pan through a strainer and into the oil pump, excess pressure being relieved by the pressure relief valve. The oil pressure warning light switch is screwed into the timing cover and registers the oil pressure in the main oil gallery on the outflow side of the filter.

Pressurized oil passes through an oil cooler mounted in front of the radiator to the full flow oil filter and to internal drillings in the crankshaft where it is directed to each main bearing and to the big end bearings via numbers 1, 3 and 5 main bearings.

An internal drilling in the cylinder block directs oil to the camshaft where it passes through further internal drillings to the hydraulic tappets, camshaft journals and rocker shaft. Lubrication to the thrust side of the cylinders is either by oil grooves machined in each connecting rod big end joint face or by splash.