Page 89 - CTS - Mechanic Diesel - TP
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MECHANIC DIESEL - CITS



           EXERCISE 3.4: Checking the exhaust system in engine off

                                     mode


            Objectives

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

           Requirements


           Tools/Instruments                                    Materials/Components
           •  Trainee tools kit             - 1 No.             •  Cotton waste                 - as reqd.
           •  Box spanner set               - 1 No.             •  Tray                         - as reqd.
                                                                •  Soap oil                     - as reqd.
           Equipments/Machines                                  •  Strap                        - as reqd.

           •  Light motor vehicle           - 1 No.             •  Gas welding plant            - 1 No.
                                                                •  Welding wire                 - as reqd.

           Procedure

           Examine the exhaust system of an engine in off mode (Fig 1)

           •   Visually check the exhaust manifold(1) mounting(2) tightness and gasket leakage symptoms.
           •   Examine the heat strap and exhaust damper damages.
           •   Examine the downpipe connection (3) gasket and mounting with exhaust manifold flange.
           •   Examine both side mountings of catalytic converter (4).
           •   Visually check the outside damages of resonator pipe (5).
           •   Visually check the muffler mountings (6) and connections.

           •   Visually check the loose connection of tail pipe (7).
           •   Visually check the exhaust pipe having strap (8) with vehicle body.
           •   Visually check the deteriorated parts in exhaust system.
           •   Visually check the exhaust pipe for dent and damages.

             Fig 1





























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