Page 108 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

TASK 2: Assembling

1 Assemble the roller tappet assembly in the housing and secure it by the snap ring.
2 Assemble the spindle and plunger assembly and tighten the screw plug.
3 Place valves on their seats along with the springs and the gasket in position and screw in the plug.
4 Fit the hand priming pump.

5 Fit the filter assembly.
6 Rotate the F.I.P camshaft so that the heel of the cam driving end of feed pump is at the front.
7 Fit the feed pump on the F.I.P.
8 Tighten the feed pump mounting screws uniformly.
9 Connect the inlet fuel line.

10 Check for the operation of the pump by the hand priming pump and also by turning the engine. If the fuel
comes out freely without air bubbles, connect the outlet line.

TASK 3: Overhauling electrical feed pump
1 Disconnect the +Ve and -Ve battery terminal.
Fig 1
2 Disconnect the wires connections of the electrical feed
pump.
3 Unscrew the mounting bolts & nuts.
4 Remove the electrical feed pump.
5 Place it on the work bench.

6 Clean dust on the pump and dismantle it.
7 Check the fixed contact point and movable point.
8 Remove the pitting by fine emery paper.
9 Check the fixed point body earth.

10 Check the insulation and continuity of armature coil.
11 Check the plunger movement.
12 Inspect the inlet and outlet valve fitted below the
diaphragm.

13 Check the diaphragm, if damaged replace it.
14 Assemble all the part of fuel pump and fit the fuel pump in the engine.
15 Connect the wiring with insulation switch.
16 Connect the battery terminal.
17 Check its operation at high speed and idle speed.
18 Ensure no loose connection and leak in fuel pump.

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CITS : Automotive - Mechanic Diesel - Exercise 5.3