As a Diesel Engine Mechanic, you will need to master following:

• comply with factory specifications in engine repair
• diagnose defective engines
• disassemble engines
• evaluate engine performance
• operation of different engines
• perform manual work autonomously
• re-assemble engines

More generally, a diesel engine mechanic is also versed in:

• adjust tightness of engine parts
• bolt engine parts
• comply with legal regulations
• engine components
• health and safety measures in transportation
• hydraulics
• maintain work area cleanliness
• mechanics
• physics
• principles of combustion engines
• principles of mechanical engineering
• repair engines
• use traditional toolbox tools
• wear appropriate protective gear

It also helps to know the following:

• automotive diagnostic equipment
• check train engines
• clean vehicle engine
• identify customer's needs
• install transport equipment engines
• issue sales invoices
• maintain vessel engine room
• mechanics of trolley buses
• mechanics of vessels
• perform maintenance on locomotives
• perform routine maintenance on railway engines
• provide customer information related to repairs
• rail infrastructure
• use automotive diagnostic equipment
• aircraft mechanics
• create solutions to problems
• execute working instructions
• lubricate engines
• maintain electrical engines
• mechanics of motor vehicles
• mechanics of trains