Page 97 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

Cleaning and inspection
1 Clean all the metal parts with kerosene.
2 Clean the diaphragm, valve housing, gasket and the valves with petrol.
3 Dry the metal parts with compressed air.
4 Dry the diaphragm, gasket and valves by low pressure compressed air.
5 Check visually all the parts for crack or damage.
6 Check visually the diaphragm for puncture and damage.
7 Check the valves for their one-way function.
8 Check the mating surfaces of the upper and lower halves of the assembly for any damage. If pitting is
found, clean the surfaces with the help of zero grade emery paper on a level surface.
Assembling
1 Align the crank-lever hole and holes in the bottom half of the body.
2 Insert the crank-lever pin.
3 Lock the crank-lever pin by the retainer lock.
4 Fix the lever pin plug.
5 Assemble the diaphragm return spring and the diaphragm and lock the spring with the diaphragm lock on
the lower half of the body.
6 Assemble the diaphragm spindle with the crank-lever.
7 Install the outlet valve assembly.
8 Install the inlet valve assembly.
9 Install the valve retaining plate.
10 Place the strainer.
11 Place the valve housing gasket.
12 Fix the housing cover.
13 Align the mark lines of the top and bottom halves of the pump to position these parts.
14 Fix the pump body screws. While fixing them, first tighten the first two threads by hand, then tighten the
screws alternatively with a spanner/screwdriver as required.
15 Test the pump for suction and delivery.
16 Clean the pump mounting flange surface.
17 Clean the seating area of the pump on the engine block.
18 Apply shellac on the mounting flange surface.
19 Fix the new gasket on the mounting flange.
20 Position the fuel pump on the cylinder block.
21 Ensure the crank-lever of the fuel pump sits on the eccentric of the camshaft.
Fitting the pump
1 Align the mounting bolt holes on the cylinder block and fuel pump flange holes.
2 Fix the fuel pump mounting bolts. While fixing the fuel pump mounting bolts, tighten two threads by hand to
avoid wrong threading.
3 Tighten the bolts alternatively with a spanner.
4 Connect the outlet pipe between the fuel pump outlet and the float chamber inlet of the carburettor.
5 Connect the inlet pipe of the fuel pump to the fuel line from the fuel tank. While connecting the pipelines
tighten two threads by hand to avoid wrong threading.
6 Use two spanners, one spanner to hold the union from turning while tightening the cap nut to avoid damage.
7 Start the engine and check for fuel leakage.

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CITS : Automotive - Mechanic Diesel - Exercise 4.2