Page 114 - CTS - Mechanic Diesel - TP

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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