P A P E R - III Category D : PISTON ENGINES ___________________________________________________________ Note :- This is in addition to the syllabus already pre- scribed for category C, paper III of Piston Engines. 1. General Requirements Detailed knowledge of the layout of the overhaul workshop including Engine test-bed. A detailed knowledge of the use of workshop inspection aids, including NDT equipments; factors and limitations effecting the choice of equipment and methods of inspection used. A detailed knowledge of the care, use and checking for accuracy of special tools used in overhaul of the engine. 2. Metallurgy Knowledge of effect of various alloying elements in steel; Properties and use of Alloyed Steel. Detailed knowledge of Heat treatment of Steel and Aluminium. Detailed knowledge of surface hardening processes used on engine parts. A general knowledge of the workshop processes, welding and protective treatments. Knowledge of materials used in engine construction; proce- dures for testing the soundness of these materials. A detailed knowledge of methods of assessment and removal of corrosion including treatment and reprotection. 3. Inspection and Repair A general knowledge of preparation of inspection reports prior to repair/ overhaul. Detailed knowledge of preparing the engine for complete overhaul/ inspection; procedure of dismantling the engine. A detailed knowledge of the repair, reconditioning, adjust- ments and assembly of major components; inspection before, during and after the repair/ reconditioning of the compo- nents. A detailed knowledge of the repair, inspection and testing of oil heat exchanger units, fuel and oil systems and engine control systems. A detailed knowledge of the procedure for final inspection of the engine after overhaul/ major repair. Knowledge of the various methods of engine testing (dynamom- eter etc.); Detailed knowledge of the procedure of testing the engine after complete overhaul and monitoring its per- formance with the help of graphs/ curves.