5 Questions
Which main bearing journal is used to lubricate the No. 5 crank pin?
No. 7 main bearing journal
At what schedule is the roller bearing of the injector control shaft typically changed?
T-720 & above schedule
What is the high range of Iron (Fe) in ppm in spectrographic analysis of engine lube oil?
above 125ppm
How many brake cylinders are fitted in a truck in an HHP Locomotive?
4
What is the maximum clearance allowed between the valve stem and valve guide in an HHP Locomotive?
0.010"
Study Notes
Locomotive Mechanics
- The No. 5 crank pin journal is lubricated through the No. 7 main bearing journal.
- The roller bearing of the injector control shaft is changed during the T-360 and above schedule.
- In spectrographic analysis of engine lube oil, a high range of Iron (Fe) is above 125ppm.
- In HHP Locomotives, there are 4 brake cylinders fitted in a truck.
- In HHP Locomotives, the maximum clearance between the valve stem and valve guide is 0.010”.
- In HHP Locomotives, the compressor oil is changed during the T-180 and above schedule.
- The free air delivery of the ELGI compressor is 5380 LPM.
Test your knowledge of marine engineering with these questions on lubrication systems, bearing maintenance, and oil analysis.
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