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17 September, 20:39

Technician A says that torque-to-yield head bolts are special bolts that are reusable. Technician A says that main bearing clearance can be calculated by knowing the inner diameter of the main bearing and the outer diameter of the main journal. Technician B says that rod bearing and main bearing clearance can be measured with Plastigauge. Who is correct?

A) Technician A only

B) Technician B only

C) Both A and B

D) Neither A nor B

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  1. 17 September, 20:46
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    Answer: D

    Neither A nor B

    Explanation:

    In order to check the clearances for rod and main bearings, you need a set of micrometers and a dial-bore gauge

    Measuring the inside diameter of a main or rod bearing will require a dial bore gauge. The best ones to use are accurate down to 0.0001-inch.

    So, both technician A and B are incorrect
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