. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . NO. 6 DISTRIBUTING tender brake piston surely makes morethan double the number of strokes thatthe freight car piston does in the samelength of time, and is likely to collectmuch more dirt. In suggesting a small quantity of oilfor the driver brake cylinders it is recog-nized that the average grade of engineoil, after being in the cylinder a consider-able length of time, has a tendency to rotthe packing leather, but owing to the loca-tion of most driver brake cylinders, theheat will usually bur
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . NO. 6 DISTRIBUTING tender brake piston surely makes morethan double the number of strokes thatthe freight car piston does in the samelength of time, and is likely to collectmuch more dirt. In suggesting a small quantity of oilfor the driver brake cylinders it is recog-nized that the average grade of engineoil, after being in the cylinder a consider-able length of time, has a tendency to rotthe packing leather, but owing to the loca-tion of most driver brake cylinders, theheat will usually burn the packing leatherif it becomes dry, so that oiling the leath-ers is at least choosing the lesser of twoevils. Removing the reducing valve andrhr-ck valve every three months may ap-. 136 FEED VAL\E, REMOVED FROM BR.\CKET. The reason for mentioning the air-gauges but once in six months is becauseof the fact that during the daily trip in-spection there are three hands on threeseparate gauges indicating the brake pipepressure carried, and in release positionthe red hand must equal this, and it ispractically testing the test gauge, and they pear to be rather frequent, but it will befound that at the end of this time thelubrication will be pretty well worn off,and lubrication will prevent excessivewear of the piston, supply valve and sup-ply valve seat, and there is no doubtremoving it every three months will saveconsiderable time in the long run, to say VALVE, OFF RESERVOIR,the bushing and packing leather; to re-move the entire valve at the end of sixmonths will give an opportunity to prop-erly clean and test the valve. While weknow that distributing valves have beenin service from eighteen months to twoyears without any attention or withoutgiving any trouble, it is n
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