Page 111 - CTS - Mechanic Diesel - TP

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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