LET Day 6 Review 4/14

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Anonymous
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272283
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LET Day 6 Review 4/14
Updated:
2014-04-29 15:27:27
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LET
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LET Day 6 Review
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  1. How much time must you wait to recover form an emergency application?
    90 seconds
  2. What is the normal position for the retainer valve?
    EX (exhaust)
  3. When a train line application is the cause of the emergency application, when is the power eliminated?
    After 20 seconds
  4. Which gauge should you watch for brake pipe reduction and why?
    • Equalizing Reservoir
    • Because the brake pipe reduces at a slower rate than the equalizing reservoir
  5. When should the Automatic Brake be cut out?
    • When checking brake pipe leakage
    • Setting up locomotive for trail
    • Setting up a helper locomotive to assist a train
  6. What is considered a reportable condition for locomotive brakes?
    Within in 2 inches of the maximum piston travel shown in block 10
  7. Who and where do you report excessive locomotive brake piston travel to?
    • Locomotive Work Report
    • Train Dispatcher
    • Yardmaster
    • Mechanical Desk
  8. When must you report brake cylinder pressure differences?
    When the pressure is 3 PSI or more from the posted pressure
  9. Can you use the "PASS" position of a 3-position automatic brake cut-out valve in freight service?
    No
  10. When is a locomotive consist bake test required?
    Any time the consist is made up or added to
  11. When is a standing locomotive brake test required?
    • When taking control of locomotives
    • When changing ends
    • Initial movement when cutting away from train cars
  12. What are the steps of a Locomotive Consist air brake test?
    • Independent and Automatic in RELEASE
    • Confirm that the brakes are released
    • Independent in FULL APPLICATION
    • Confirm the brakes apply
    • Independent in RELEASE
    • Confirm the brakes release
    • Make 10-PSI Reduction
    • After brake pipe exhaust stops, cut out automatic brake
    • Measure brake pipe leakage for 1 minute making sure it does not exceed 5 PSI
    • Confirm the brakes apply
    • Actuate brake cylinder
    • Confirm the brakes release
    • Properly position air brake controls as required
  13. What are the steps to perform a Standing Locomotive brake test?
    • Independent in FULL APPLICATION
    • Reverse lever in Forward or Reverse
    • Generator field in ON postion
    • Throttle in position #1
  14. What do you do if the status of the Dynamic Brakes are not known?
    Test at the first opportunity and put results on brake slip
  15. When decreasing brake pipe pressure, what happens to the cars in the train?
    Brakes apply throughout the train
  16. How much of a reduction is a Minimum Reduction?
    6 to 8 pounds
  17. What are the 4 gauges on the locomotive?
    • Main Reservoir
    • Equalizing REservoir
    • Brake Cylinder
    • Brake Pipe
  18. What 3 pressures will be the same when making service equalization?
    • Brake Pipe
    • Aux Reservoir
    • Brake Cylinder
  19. How much of an increase in brake pipe pressure is required for the brakes to start releasing?
    1 1/2 to 2 PSI
  20. When setting up for trail, what position does the Independent Brake handle need to be in?
    Release
  21. What is the position on the Automatic Brake valve that gives the max braking effort, without putting the train in emergency?
    Full Service
  22. When reducing the Brake Pipe past Full Service, will you receive any additional braking effort?
    No
  23. If the leading engine issued the emergency and the PC light is on, When is the power eliminated?
    Immediately
  24. When doing a Running Locomotive Brake Test and applying the Independent or Automatic Brake, What should you watch for?
    • Brake Retardation
    • Brake Cylinder Pressure
  25. When doing a minimum reduction on the Automatic Brake, How much air is going to be in the cars brake cylinder?
    10-12 PSI
  26. When performing a Standing Locomotive Brake Test and you lose control of the engines what should you do?
    • Tie hand brakes if possible
    • Change reverser to opposite direction and place throttle in #1
  27. When should a running brake test be done?
    • When changing ends
    • Initial movement
    • When changing consist
  28. What is the pressure in the Main Reservoir?
    130-145 PSI
  29. How much brake reduction is needed for a Running Brake Test?
    15 lbs
  30. What are the positions of the Independent Brake?
    • Release
    • Application Zone
    • Full Application
    • Actuate
  31. What are the positions for the Automatic Brake?
    • Release
    • Minimum Reduction
    • Service Zone
    • Full Service
    • Suppression
    • Over Reduction
    • Handle Off
    • Emergency

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