. The science of railways . No. If you should lose a rod key, what would youdo ? If it was a main rod key, I would substitutea side rod key, if the engine had one, and put awooden key in its place. How would you disconnect in the case of abroken crosshead (96) ? The same as for a brokencylinder head. I would disconnect the engine onthe side on which the break was located. 78 DUTIES AND RESPONSIBILITIES If the engines have six or more connected driv-ing wheels, what side rods should be taken off, ifopposite ones are broken ? If the knuckle is backof the pin, as in Fig. 18, and the back section
. The science of railways . No. If you should lose a rod key, what would youdo ? If it was a main rod key, I would substitutea side rod key, if the engine had one, and put awooden key in its place. How would you disconnect in the case of abroken crosshead (96) ? The same as for a brokencylinder head. I would disconnect the engine onthe side on which the break was located. 78 DUTIES AND RESPONSIBILITIES If the engines have six or more connected driv-ing wheels, what side rods should be taken off, ifopposite ones are broken ? If the knuckle is backof the pin, as in Fig. 18, and the back section isbroken, the corresponding side rods on theopposite side should be taken off. If the forwardsection is broken, all side rods should be taken off*. How would you disconnect if you broke a maincrank pin close to the wheel? I would take offall side rods (152) and disconnect engine, andfasten the crosshead (96) and valve (47) (withsteam ports (56) covered) on the broken side. J^ia. 18. JB SfTrxvLcJfle-^. Which are the main drivers of a locomotive?That pair of wheels to which the main rods areattached. On which axle is it customary to place theeccentrics, and why? On the main axle, so thatthe engine can be run, even with all the side rodstaken down. Describe the difference between a standard,mogul, ten-wheel and consolidation engine. Astandard engine has four drivers, connected, anda four-wheel truck. A mogul has six drivers, con-nected, and a pony or two-wheel truck. A ten-wheel engine has six drivers, connected, and a OF THE LOCOMOTIVE ENGINEER 79 four-wheel truck. A consolidation engine haseight or more drivers, connected, and a pony ortwo-wheel truck. If one of the forward tires (137) of a ten-wheelengine should break, what would you do? Iwould run the wheel with broken tire up onwedges (see Fig. 9) placed on the track, so as toraise the tire above the rail and insert in place €/,J9
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