Diseases of the air brake system; their causes, symptoms and cure . men that the pumps that have been get-ting the largest quantities in the air-c3-linder are mostliable to make this noise. This fact is hard to explain. The writer will only saythat a groaning pump is frequently helped by thoroughcleaning of the air cylinder and careful use of oil there-after. 16 Diseases of the Air Brake System. UNEQUAL STROKE. This is generally caused by unequal lift of the air dis-charge-valves (30 and 82). If the up stroke is slowerthen the down stroke, valve (30) has less lift than valve(32), and vice-vers
Diseases of the air brake system; their causes, symptoms and cure . men that the pumps that have been get-ting the largest quantities in the air-c3-linder are mostliable to make this noise. This fact is hard to explain. The writer will only saythat a groaning pump is frequently helped by thoroughcleaning of the air cylinder and careful use of oil there-after. 16 Diseases of the Air Brake System. UNEQUAL STROKE. This is generally caused by unequal lift of the air dis-charge-valves (30 and 82). If the up stroke is slowerthen the down stroke, valve (30) has less lift than valve(32), and vice-versa. The other causes of this trouble will be found in slug-gish action of the steam-valves. FAIRLY RAPID STROKE, BUT LOW EFFECTIVE CAPACITY. This trouble is always found in the air-cylinder. Eitherthe valves do not seat properly; the piston has too muchclearance; the rings (13) leak, or the cylinder is worn outof true. (.See page 12).. Nine-and-a-Hxlf-Inch Westinghousk Pump.—Platk 3. 108 IVTaiimWi-vc &»»i ii»i^ i-L 75 ! i=^ J^ -^ [tu^^^^
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Keywords: ., bookcentury1800, bookdecade1890, bookiddiseasesofai, bookyear1894
