Page 103 - CTS - Mechanic Diesel - TP
P. 103

MECHANIC DIESEL - CITS


                                       MODULE 5: Fuel Supply System (Diesel)


           EXERCISE 5.1:   Servicing dry and wet air  cleaner and
                                       charge air cooler



            Objectives

           At the end of this exercise you shall be able to
           •  service the dry type air cleaner
           •  service the oil bath type air cleaner.
           •  dismantle charge air cooler and inspect, clean test and refit into the engine.

           Requirements

           Tools/Materials                                     Materials
           •  Trainee’s tool kit          - 1 No.              •  Engine oil
                                                               •  Kerosene
           Equipments/Machines
                                                               •  New air cleaner gaskets
           •  A light motor vehicle                            •  Hose clamps
           •  Air compressor                                   •  New air filter element


           Procedure

            TASK 1: Service air cleaner (Dry type)
            1  Open the bonnet.
            2  Unscrew the bolt or wing-nut (1) of the air cleaner with the help of a   Fig 1
              spanner or plier (Fig 1).
            3  Remove the top cover (4) with the filter element (5) and gasket (6).
            4  Loosen  the  nuts/fixing  clip  (7)  fixing  the  air  cleaner  on  the  inlet
              manifold.
            5  Remove the bottom case (8) of the air cleaner.
            6  Clean the air cleaner housing and cover with cloth.
            7  Inspect the filter element (5). If it is clogged, replace the same.
            8  Blow off the dust  from the  inside element by compressed air.
            9  If  the  element  is  heavily  dirty,  wash  it  with  a  household    type
              detergent
            10 After washing rinse the detergent out of the element  and dry it
              completely
            11 Check  visually  the  cleaned  element  (5)  for  puncture  or  damage.
              Discard if it is found punctured or damaged.
            12 Check the plastic or rubber gasket ring (6) for smoothness which
              acts as a gasket
            13 Place the new or old element (5) in the lower housing (8).
            14 Put the plastic gasket ring (6) on the element (5).
            15 Put the top cover (4) on the element (5).
            16 Tighten the wingnut (1) with the help of a plier.
            17 Test the air cleaner by starting the engine for smooth running.

           TASK 2: Service air cleaner (Oil bath type)
           1  Open the bonnet of the vehicle.
           2  Unscrew the bolt or wing-nut  (1) on the top cover (2) by hand or plier (3) (Fig 1).
           3  Remove the top cover (2) with the  element (5) and gaskets (6 & 9).


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