If the extent of out-of-roundness or taper exceeds the specified limit on only one crankshaft journal then,
A. Change the size of the main journal bearing on that journal
B. No action is necessary provided the out-of-roundness and taper are within specification on all of the other journals
C. Grind all of the other journals to match the dimensions of the out-of-specification journal
D. Replace crankshaft with a new one
Answer: Option D
This Question Belongs to Automobile Engineering >> Maintenance And Troubleshooting In Automobile
Breakdown maintenance is done when
A. After breakdown
B. Just before the breakdown
C. Any time
D. None of the above
Accident chance is minimized in
A. Preventive maintenance
B. Breakdown maintenance
C. Accidental maintenance
D. Routine maintenance
A. The overall lubrication and repair work carried out by the maintenance section in advance of the machine coming to breakdown
B. The maintenance work for any fault noticed during the work
C. Done to prevent the maintenance of machines
D. None of the above
The type of bearing most commonly used for main bearings and connecting rod bearings is
A. Ball bearing
B. Plain bearing
C. Needle roller bearing
D. Taper roller bearing
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