A. The separate exhaust valve has failed to close. Try jarring it with a
hammer on the front side, near the exhaust valve. With a bad case, take
the valve out, clean it and replace, if not broken.

15. Q. If the engine stands with high-pressure side on the dead center
and will not move when given steam, where is the trouble, and what may
be done to start the engine? Why?

A. The intercepting valve is stuck in compound position, so live steam
cannot get to the low-pressure cylinder. In a case of this kind, close
the throttle, open cylinder and port cocks; when all pressure is
relieved, use a bar to move forward the rod that works through the oil
dash-pot, thus moving the valve to simple position and steam will pass
to the low-pressure cylinder as soon as throttle is open. The engine
will not start, because with the low-pressure piston on the quarter,
steam must be admitted to its cylinder to start the engine.

16. Q. In the event of a breakdown, how should one disconnect?

A. The same as a simple engine with separate exhaust valve open, so
engine will work simple instead of compound.

17. Q. What may be done to shut off steam pressure from the steam chest
and low-pressure cylinder?

A. To shut off steam from the low-pressure chest, pull out the rod that
runs through the dash-pot as far as possible and fasten it in this
position. Then open the separate exhaust valve.