A. No. Report all defects noticed so plainly that they can be located by
the repair man without unnecessary work and whether there is steam in
the boiler or not at the time repairs are to be made. If the engine
blows, make a test to locate the blow and report it correctly. Also
report any unusual feature in the operation of the engine during the
trip.





=COMPOUND LOCOMOTIVES=


1. Q. Wherein do compound locomotives differ from ordinary or simple
ones?

A. Simple engines take live steam from the boiler and after one
expansion in a single cylinder it is exhausted to the atmosphere. A
compound engine has two cylinders, sometimes one on each side of the
locomotive; other types have four cylinders or two on each side of the
locomotive. The live steam first passes into one cylinder, expanding
down for a portion of its pressure, and then being allowed to pass into
the second cylinder where it expands a second time, thus getting two
expansions from each volume of live steam. Both simple and compound
locomotives consist of two engines coupled to the same set of driving
wheels. Balanced compounds have four sets of main rods and crank pins.
Mallet compounds have two complete sets of engines under one boiler.