. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . top side of thedischarge valves in the pump and endson the top side of the rotary valve ofihr engineers brake valve. -5. What is the main reservoir usedfor? A. It is a store house, or storagetank for air pressure, to charge and re-charge the air brakes. 26. What pressure is usually carriedin the main reservoir? A. 90 lbs. with the 70 lb. brake, and of the weight which had been added :tthe time she was counterbalanced in theshop, or a mistake may have been madefrom the beginning in doing the w
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . top side of thedischarge valves in the pump and endson the top side of the rotary valve ofihr engineers brake valve. -5. What is the main reservoir usedfor? A. It is a store house, or storagetank for air pressure, to charge and re-charge the air brakes. 26. What pressure is usually carriedin the main reservoir? A. 90 lbs. with the 70 lb. brake, and of the weight which had been added :tthe time she was counterbalanced in theshop, or a mistake may have been madefrom the beginning in doing the work. AIR PUMP POUNDS. (52; F. M., White Sulphur Springs,Va., writes: 1 am using a Wcstinghouse 9!^-in. airpump. It has been in service about twoyears since repairs were made. Aboutone month ago it began to show apound at the beginning of the up stroke,v>hich has grown worse, but pumpmakes plenty of air. The pound is notnoticeable for about two strokes beforethe governor shuts it down, nor is itnoticeable when the pump is workinglight. Where must I look for thetrouble? A.—Your lower discharge. Modern railroad bridge, line clear : about 130 lbs. with the high speed orno lb. brake. GENERAL Questions Answered LOCOMOTIVE (51) H. H., Tuelahoma. Tenn., writes:My superintendent claims that the en-gine I am running is harder on bridgesthan any other engine he has on his di-vision. The engine is the same class asall the rest of them, Rogers claims this engine is out of counter-balance. I would like to hear from youon the subject. A.—Your superintend-ent has probably got the right ideaabout your engine, and it should beweighed up at once. It is quite possi-ble to have an engine one of a class outof balance, and the rest not so by rea-son of perhaps the loss of all or some valve or upper receiving valves havetoo much lift. They should be 3/32 , some of the air passages arechoked with burnt oil. Run a strongsolution of lye through th
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