92. Q. What will cause a constant blow at the brake pipe exhaust port,
and what may be done to overcome it?
A. This indicates that the brake pipe exhaust valve is being held off
its seat, due no doubt to dirt; tapping the side of the valve will
sometimes stop the blow; if not, close the brake pipe cut-out cock and
make a heavy service reduction; next, place the brake valve handle in
release position. This will cause a strong blow at the exhaust port,
which will invariably remove the trouble.
93. Q. If the pipe connecting the brake valve with the equalizing
reservoir breaks, can both locomotive and train brakes be operated with
the automatic brake valve?
A. Yes; by placing a blind gasket in the pipe connection at the brake
valve and plugging the brake pipe exhaust port. To apply the brake, move
the handle carefully toward emergency position, making a gradual
reduction of brake pipe pressure through the direct exhaust ports of
the brake valve; when the desired reduction is made, the handle should
be moved gradually back to lap position.