A. By closing the steam throttle for a few seconds, then opening it quickly; if this does not start it, try tapping the main valve chamber. This will usually overcome the trouble where the compressor stops on account of lack of lubrication.
81. Q. What will cause a compressor to short-stroke or dance?
A. Too much oil in the steam end; bent reversing rod; or low steam pressure, as when the governor has almost shut off the steam.
ENGINEER'S BRAKE VALVE
82. Q. Name the different positions of the G-6 and H-6 brake valves.
A. Release, running, lap, service, and emergency position, with the G-6; release, running, holding, lap, service, and emergency positions, with the H-6.
83. Q. What is the purpose of release position?
A. To provide a large and direct opening from the main reservoir to the brake pipe, for the free flow of air, when charging and recharging the brakes.
84. Q. What pressure will be had in the brake pipe if the brake valve be left in release position?