engine to be worked at about half cut-off; handle such part of the train
as the road conditions would permit.

86. Q. What should be done if the piston, piston rod, cross-head, main
rod or crank pin are broken or bent?

A. If a piston should break, would remove broken parts, disconnect valve
stem, clamp valve in central position, and if moving piston would not
damage cylinder, leave main rod up and proceed. If a piston rod,
cross-head, main rod or crank pin are broken or bent, would take down
the main rod, block the valve and cross-head; if piston rod is broken
off at the cross-head, leave main rod up.

87. Q. What should be done when there is a loose or lost cylinder key?

A. If the cylinder key is loose, it should be tightened up; if lost,
something should be substituted. In case nothing solid can be found to
take the place of the key, the engine should be run in light to avoid
further damage.

88. Q. What should be done if a safety valve spring or stud breaks?

A. The steam pressure should be reduced. With broken spring, screw the
parts down solid or clamp the stem down. This can be done by laying a
piece of scantling across the top of the valve, fastening each end to
the hand rail on opposite sides of the engine in case of broken stud.
Would then raise steam pressure and proceed. Care should be taken to see
that the other safety valves relieve the steam pressure properly.

89. Q. How can an engine be brought in with a broken front end or stack?