Page 250 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

175+5 kgf/cm² for testing inline pumps.
130*5 kgf/cm² for Nozzles used for testing distributors type pumps.
Caution: Test nozzles should not be reconditioned since it would affect delivery quantities.
• Checking ofSpeed control shaft
Lubricate the bearings at both ends of the shaft.

Every month maintenance
• High pressure pipes
Examine high pressure pipe nipples / sealing cones and bore. If deformed or pressed in, clean the bore with a 2
mm dia. drill. Flush thoroughly.
• Test oil feed pump
Clean the filter sieve. Examine rubber gasket for filter bowl, feed pump valves and springs.
Replace, if necessary.

• Checking of ‘V’ belts
Check the ‘tension’ and the condition of ‘V’ belts. Readjust the tension or replace if necessary.
• Checking of hydraulic transmission of FIP Test bench
Check oil level. If necessary top up with the recommended oil by the manufacturer. Clean the outside of the
housing and ensure that the cooling pipes are clean and dry.
• Checking of Intermediate gear box
Check oil level. Top up with the recommended oil.
Overcheck the test bench with a master pump. Maintain a ‘Record card’ as per the specimen enclosed.
Maintenance of Every 2 months or after calibrating 200 pumps

Test the calibration oil
Replace with recommended test oil. Clean the test oil tank thoroughly while replacing the oil.
Observe oil contamination Indication
A dark yellow tinge but otherwise clean is Indicative of contamination with lubricating oil. This can influence
delivery values.
A cloudy test oil with greyish tinge is indicative of direct contamination. This can damage pump and test injectors.
• Replace filter inserts at the time of changing the test oil or earlier if required.
Every year Maintenance

• Replace Hydraulic transmission oil
Every 2 years Maintenance
Get the bearings of electric motor greased by a competent electrical workshop.
Note: The bearings of electric motor need to be lubricated for the first time after 4-5 years service.
Subsequently once in 2 years.
Overchecking procedure
Overchecking ofEvery month
Before overchecking the test bench ensure that the various maintenance checks have been carried out as
recommended.
Overcheck of Test bench manometer
Connect the ‘Reference Monometer’ at the pump gallery with a suitable adapter.
Switch on the test bench motor.

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CITS : Automotive - Mechanic Diesel - Exercise 15.1