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3 Cards in this Set
- Front
- Back
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What is the No. 4 brake equipment on a Y class? |
Back (Definition) |
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What are the five, No. 4 Automatic Brake Valve Operating Positions on the Y class? CR R L S E |
1. charging & release - charge brake pipe with main reservoir air to release the train brakes quickly after an application. Don’t leave in this position (it will end up at main res 750-850 pressure), only use this position to assist a quick release of the brakes after an application. 2. running - the normal position to have the brake valve (lever) in when they’re not being applied. This maintains brake pipe pressure at 500kPa. 3. lap - holds brake pipe pressure steady after application is made 4. service - this is brake application position-allows BP pressure to be reduced for application of brakes 5. emergency - applies train brakes at faster rate Craig really really loves steam engines |
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What are the four W type self lapping brake valve positions -independent brake - Y class loco only? R A F E |
1. release - normal position, brake not applied 2. application zone - increases and decreased BP pressure to apply/release brakes-self lapping ensures brake cylinder pressure is maintained 3. full application - full brake cylinder pressure 310kPa 4. emergency - higher brake cylinder pressure than full application RAFE |
