Q. What would you do if the crank-pin heats, gets worn or cut?
A. If bent it should be turned true again; if not bent it can be filed and polished perfectly true by hand.
Q. What would you do if the main bearings heat?
A. Loosen the caps and apply plenty of good oil. If this does not stop it take off the caps, examine the oil holes to ascertain why the oil does not reach the bearing. If the bearings have become rough and cut, the shaft will have to be smoothed again.
Q. Would any harm result from starting an engine with the drip cocks closed?
A. Yes, the condensed steam filling the space would smash the cylinder or piston head.
Q. What do you mean by atmospheric pressure?
A. The weight of the atmosphere, which is 14.7 lbs. per square inch at sea level.
Q. How hot can you get water with exhaust steam under atmospheric pressure?