CRANK-PIN BROKEN.
For a broken main crank-pin, the above method of stripping the engine will do with the addition of taking down both side-rods. An accident which disables one side-rod, requires that the other one shall be taken down also, or there will be trouble when the engine is attempted to be run with one side-rod. The rod might go all right so long as no slipping happened. But, if the engine began to slip while passing over the center, the side-rod would have no leverage on the back crank to slip its wheel; and a broken rod or crank-pin would almost certainly ensue.
A broken side-rod, that is not accompanied by other damage, requires both side-rods to be taken down. All the inconvenience arising from this is, that the engine is more liable to slip. But, with dry rails, an engine can get along very well without its side-rods.