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MECHANIC DIESEL - CITS



           EXERCISE 5.6: Overhauling fuel injection Pump (Inline)


            Objectives

           At the end of this exercise you shall be able to
           •  dismantle the F.I.P
           •  inspect all the parts of the F.I.P
           •  assemble the F.I.P.

            Requirements


           Tools/Instruments
           •  Fuel injection pump         - 1 No.                 •  Special tools                - as reqd.
           •  Swivelling vice             - 1 No.                 •  Plunger and barr             - as reqd.

           Procedure


           Dismantling
           •  Keep the unserviceable fuel injection pump on the work bench
           •  Loosen the mounting screws of the feed pump. Do not loosen any mounting screw completely. Gradually
              remove the mounting screws and take out the feed pump slowly.

           •  Remove the control rack (14).110
           •  Remove the inspection cover (1) and mount the injection pump on a swivel vice.
           •  Remove the plate (22) from the governor cover (4).
           •  Unscrew  the  torque  control  capsule  (2)  from  the  tensioning  lever  (3)  after  removing  the  lock-nut  with  a
              combination wrench
           •  Remove the screws securing the governor cover (4). Tap me cover lightly with a rubber mallet to loosen it from
              the governor housing. Drain the lubricating oil by removing the drain nut.
           •  Disconnect the fulcrum lever by displacing the spring with a screwdriver
           •  Remove the starting spring (19).
           •  Unscrew the round nut (20).
           •  Remove the flyweight assembly (6).
           •  Remove the woodruff key from the camshaft (10).

           •  Lift off all the roller tappets (7) from the camshaft and remove the housing (8)
           •  Remove the intermediate bearings (9) and remove the camshaft (10).
           •  Remove the bearing end plate (21).
           •  Push the roller tappets (7) upward and remove the tappets Remove all the plunger elements (12) with the
              springs (11)
           •  Remove the control sleeve assembly (13-15) together with the upper spring plate. Remove the control rack
              (14)

           •  Remove the delivery valve holders (16) and the delivery valves (17) along with the spring (18).
           •  Take out the element barrels.
           •  Keep the respective barrels and plunger elements together. Do not interchange the barrels and the plunger
              elements.
           •  Place the components in the respective compartments of a clean standard workshop tray. Ensure that the
              plunger element and barrel are not interchanged.



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