How the "Shovel"  Oiling System Works

 

Green is Low Pressure Feed.  Red is High Pressure Feed

Pressurized oil is forced thru oil screen, thru crankcase passages

to external oil lines that lubricate rocker arms, shafts, etc. A branch

system supplies oil to the hydraulic lifters. When oil reaches rocker

arms and lifters, pressure relief valve opens and allows pressurized

oil to flow to pinion shaft where it oils the lower rod bearings.