Locomotive engine breakdowns and how to repair them; with questions and answers, tables and useful pointers - Softcover
Synopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1918 Excerpt: ... AIR BRAKE. WESTINGHOUSE SYSTEM. 1. If the cross-compound air compressor stops in service from an unknown cause, what might be the trouble? Answer.--Loose nuts on the piston rod in the low pressure air cylinder; a bent or broken reversing valve rod; the rod disengaged from the reversing valve plate; a loose reversing valve plate; bad packing rings on the main valve, or a dry compressor. 2. What method should first be tried to start the compressor? Answer.--Close the compressor throttle for a short time, then open it quickly. 3. If this fails to start the compressor, what other method might be tried? Answer.--Tap the steam cylinder head lightly. 4. If the above mentioned methods fail to start the compressor, what should first be examined? Answer.--The nuts on the piston rod of the low pressure air cylinder, which can be done by removing the plug in the center of the lower cylinder head. If the trouble is not located, then examine the reversing valve rod by removing the reversing valve cap. 5. In the case of loose nuts on the piston rods in the low, or high pressure air cylinders, how should be trouble be remedied? Answer.--The compressor should be removed from the locomotive, and the proper repairs made in the air brake room. Using a hammer and cold chisel to tighten up these nuts is very bad practice, as it does not draw them tight, and often fractures the end of the rod. 6. If when starting the compressor it short strokes, or "dances," what is the trouble? Answer.--Low pressure on the reversing valve allowing it to drop of its own weight, too much lubrication, or a bent reversing valve rod. 7. If the compressor pounds badly after having been run rapidly for some time, what could cause the trouble? Answer.--It may be lacking in lubrication. It may have work...
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