Page 249 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

MODULE 15: Diesel Fuel System

EXERCISE 15.1: Maintenance and Over checking of FIP

test bench

Objectives

At the end of this exercise you shall be able to
• ensure that the test bench is in good condition so that accurate and repeatable readings are obtained.
• do maintenance of FIP test bench
• rectify the FIP test bench problems.

Requirements

Tools/Instruments Materials
• Trainee’s toolkit - 1 No. • Tray - as reqd.
Equipments • Cottoncloth - as reqd.
• Kerosene - as reqd.
• Fuel Injection pump test bench - 1 No. • Diesel - as reqd.
• Master pump with adaptors - 1 No. • SoapOil - as reqd.
• Hand tachometer - 1 No. • EngineOil - as reqd.
• Reference manometer 0-6 kgf/cm² - 1 No • Calibration oil - as reqd.
• Spare test nozzle - 6 Nos.
• Spare high pressure pipes - 6 Nos.
• Reference manometer 0-6kgf/ - 1 No.

Procedure

Maintenance
Every week maintenance
• Test injectors: Test the injectors on an over checked nozzle tester for the various functional parameters viz.
seat tightness, spray pattern, atomisation and opening pressure. If found unsatisfactory;
Clean nozzle, sieve/bar filter in the inlet connection.
Repeat functional tests
If still unsatisfactory, replace complete set of test nozzles .Reset opening pressure to:

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