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Q1. Discuss the validity of EACH of the following statements with respect to large slow speed diesel engines:

A. Bearing clearances obtained by taking leads (or use of plastic inserts) are fundamentally more accurate than those obtained with the use of feelers.

B. Bearing wear down can be measured by taking deflections.

C. A timing chain should be renewed when its slackness causes late fuel injection and exhaust valve operation.

D. Timing chain slackness is solely due to stretch of the link plates.