. Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules . at all times. DEFECTS. Steam-gauges are seldom affected by defects whichinterfere with their operation. One of the principaldefects is leakage in the pipe leading from the gauge tothe boiler, which at times becomes loose at the connectionwith the steam-gauge, permitting the water in the con-necting pipe to escape at the leakage, which will allow STEAM-GAUGE. 87 steam to act directly upon the tubes within the gauge,affecting the elasticity of the tubes to the ex
. Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules . at all times. DEFECTS. Steam-gauges are seldom affected by defects whichinterfere with their operation. One of the principaldefects is leakage in the pipe leading from the gauge tothe boiler, which at times becomes loose at the connectionwith the steam-gauge, permitting the water in the con-necting pipe to escape at the leakage, which will allow STEAM-GAUGE. 87 steam to act directly upon the tubes within the gauge,affecting the elasticity of the tubes to the extent that thegauge will not register correctly, but instead will indicatea higher pressure than the actual pressure within tfrfcboiler. This defect can be remedied by tightening up onthe connection at the steam-gauge. In the event of theleakage not being stopped by this operation, and a gasketis used, the boiler valve should be closed, the joint dis-connected, all foreign matter cleaned off the seats of thejoint, or a new gasket inserted if one has been used. Alljoints leading to the steam-gauge should be kept tight atall PLATE STEAM GAUGE. Another defect which occasionally occurs and causesthe steam-gauge to fail to register correctly is the stop-ping up or clogging of the steam valve connection at theboiler, which may be clogged and cause the gauge to fail 88 GAUGE-COCKS. to register the correct pressure. This defect can onlybe remedied when there is no pressure on the boiler, and should it occur while the engine is on the road the en-gineman can only be governed by the safety-valve andthe operation of the engine. Other defects occurring in the steam-gauge are slightleakages in the tubes within the gauge, which cause anaccumulation of vapor on the dial that obstructs theview. GAUGE-COCKS. The height of the water in locomotive boilers can bedetermined by two different appliances, which are calledgauge-cocks, and the water-glass. Each locomotive isprovided wit
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