Page 111 - CTS - Mechanic Diesel - TP
P. 111

MECHANIC DIESEL - CITS



           EXERCISE 5.5: Removing and refitting the F.I.P


            Objectives

           At the end of this exercise you shall be able to
           •  remove the F.I.P from the engine
           •  check the injection timing by the spill cut off method
           •  set the fuel injection pump timing.
            Requirements


           Tools/Instruments                                   Materials/Components
           •  Trainee’s tool kit           - 1 No.             •  Kerosene                        - as reqd.
           Equipments/Machines                                 •  Diesel                          - as reqd.
                                                               •  Soap oil                        - as reqd.
           •  Multicylinder diesel engine   - 1 No.            •  Cotton cloth                    - as reqd.
           •  Air compressor               - 1 No.             •  New gasket                      - as reqd.
                                                               •  Swan neck pipe                  - as reqd.

           Procedure

           TASK 1: Removing F.I.P from the engine
           1  Disconnect the accelerators linkage connection of F.I.P.

           2  Disconnect the injector’s high pressure line from F.I.P delivery valve holder.
           3  Disconnect the F.I.P main gallery fuel connection.
           4  Disconnect the fuel feed pump fuel line connections.
           5  Dismount the F.I.P mounting bolts from engine.

           6  Remove F.I.P from the engine.
           7  Place the F.I.P in a tray on work bench.
           8  Clean the F.I.P with cleaning solvent & tools.


           TASK 2: Setting timing of the fuel injection pump in relation to the engine

           1  Before coupling the F.I.P pump to the engine for   Fig 1
              setting  timing,  the  engine  piston  No.1  cylinder
              should be positioned at the injection point before
              T.D.C.
           2  Align the engine timing marks (Fig 1 & 2)

           3  Observe the TDC/BTDC (Injection marks) and a
              pointer made in the flywheel, on the ‘V’ belt pulley
              or on the vibration damper. (Fig 3)

           4  Crank  the  engine  in  clockwise  direction  till  the
              injection mark (3) on the flywheel/vibration damper
              coincides  with  the  pointer  (1)  on  the  flywheel
              housing or timing gear housing.



                 When the above marks are aligned, the piston stands at 23° BTDC. (Ex: TATA vehicle) (Refer
                 to the service manual for other vehicles).



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