ENGINE LUBRICATING SYSTEMS

LEARNING OBJECTIVE: Identify types of lubricating (oil) systems. Point out their operational characteristics and maintenance requirements.

All internal combustion engines are equipped with an internal lubricating system (fig. 6-17). Without lubrication, an engine quickly overheats and its working parts seize due to excessive friction. All moving parts must be adequately lubricated to assure maximum wear and long engine life.