Engine: Motor Plants and Auxiliary Boilers

1. A laying a straight edge across the crank webs at the crankpin and measuring the distance to the crankpin in two places
2. B taking micrometer readings between the crank cheeks opposite the crankpin every 90° of crank angle rotation
3. C measuring the crank drop on either side of each crank throw while the crankshaft is slowly rotated through one revolution
4. D rotating the crankshaft through one revolution, pausing each 90° of rotation to measure bearing clearances, top and bottom

Tip: press A-D to answer