Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives . al position; the valve motion is termed indirect acting. Fig. 125 showsthe relation of the eccentrics with and without therocker-shaft. Great care should be taken by me-chanics, when setting the valves on these locomotives,to observe thisdifference andnot get the ec-centrics uirprop-erly located onthe axle. If thec r a n k-p i n isplaced on theforward center,the eccentric-rods will not becrossed whenthe rocker-armor indirect mo-tion is
Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives . al position; the valve motion is termed indirect acting. Fig. 125 showsthe relation of the eccentrics with and without therocker-shaft. Great care should be taken by me-chanics, when setting the valves on these locomotives,to observe thisdifference andnot get the ec-centrics uirprop-erly located onthe axle. If thec r a n k-p i n isplaced on theforward center,the eccentric-rods will not becrossed whenthe rocker-armor indirect mo-tion is used, butwill be crossedwhen no rocker-arm or directmotion is compli- Figure 125 cations have arisen from this being disregarded. In setting the piston valves, only the high^pressureports are to be considered. Both heads of the steamchest are removed, and with a tram, from some pointon the body ot the cylinder to the valve stem, the lineand line positions of the valve in both front and backmotion, are laid off and indicated by a prick punchmark on the valve stem. Using the same tram, theposition ot the valve at different parts of the stroke. LOCOMOTIVE ENGINEERING car. :ebv the - j r _ - --
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectlocomot, bookyear1916
