While having a discussion, Technician A says that before beginning engine disassembly, you should make sure that the engine is cold. Technician B says that tearing down a cold engine can cause warped cylinder heads, especially on engines with aluminum heads. Who is correct?
A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct that before beginning engine disassembly, you should make sure that the engine is cold. This is because hot metal expands, and attempting to disassemble it while it is still hot can cause damage. Technician B is incorrect that tearing down a cold engine can cause warped cylinder heads, especially on engines with aluminum heads. The temperature difference between a cold engine and the ambient air is not significant enough to cause warping, and aluminum is actually less susceptible to warping from temperature changes than cast iron.

While Having a Discussion, Technician a Says That Before Beginning