Theory – History – Diesel Engine Evolution – Distribution Networks – The Propulsion System – Operating Principles – Engine Design – Fixed Parts – Moving Parts – Commonly Used Terms – Diesel Engine Types – Direct Injection Engines – Indirect Injection Engines – Fuel/Air Supply In Diesel Engines – Air Supply – Engine Fuel Supply – How The Injection Pump Works – Lubrication – Oil Types – Which Oil Do You Choose? – Oil Consumption – The Engine Cooling System – Air Cooling – Water Cooling – Propulsion – The Gearbox – The Drive Shaft Assembly – S-Drive Transmission – Power – Electrical System – Batteries – Starting System – Charging System – Maintenance – Scheduled Maintenance – Service Table – Basic Tool Kit – Checking The Engine Oil Level – Changing The Engine Oil; Replacing The Oil Filter – Checking The Gearbox Oil Level – Changing The Gearbox Oil .