90. Q. How can you tell if equalizer tubes become stopped up or broken?

A. If they were stopped up the equalization would be destroyed, and when

the steam-chest pressure was less than the boiler pressure the feed

would work too fast, the oil would enter the feed glass in a stream

instead of forming into drops. If they were broken, the lubricator could

not be used. The auxiliary oilers would have to be used to lubricate the

cylinders.

=AIR BRAKE QUESTIONS=