Page 92 - CTS - Mechanic Diesel - TP
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MECHANIC DIESEL - CITS



           EXERCISE 3.6:  Checking the exhaust system  in engine

                                       running mode


            Objectives


           At the end of this exercise you shall be able to
           •   examine the exhaust system of an engine.

           Requirements

           Tools/Instruments                                   Materials/Components

           •  Trainee’s tool kit            - 1 No.            •  Kerosene                      - as reqd.
           •  Box spanner set               - 1 No.            •  Soap water                    - as reqd.
           •  Safety glasses or goggle      - 1 Set.           •  Cleaning cloth                - as reqd.
                                                               •  Emery sheet                   - as reqd.
           Equipments/Machines
                                                               •  Wire brush                    - as reqd.
           •  Diesel engine                 - 1 No.            •  Metal sealing compound        - as reqd.
           •  Water sprayer                 - 1 No.            •  Pipe clamp                    - as reqd.
           •  Arc welding machine           - 1 Set.           •  Bolts/ nuts                   - as reqd.
                                                               •  Gasket/ Asbestos              - as reqd.
           Procedure


           •  Start the engine.
           •  Identify leak in between the engine head and exhaust manifold joint (Gasket).

           •  Confirm the leakage by spraying soap water on it.
           •  Stop the engine and allow to cool
           •  Remove and clean the surface and studs with the help of wire brush and emery paper.
           •  Place a new gasket, align and tighten it with recommended torque.
           •  Restart the engine and check the leakage.

           •  Identify leaks by loose connection between muffler and tail pipe.
           •  Dismantle the fittings, remove carbon, rust and clean it.
           •  Apply metal sealing compound in between sleeve.
           •  Join the tail pipe and properly tighten it.

           •  Restart the engine and check its smooth running without noise.
           •  Ensure, there is no exhaust gas leaks in the exhaust system.





















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