Mechanical Study Questions

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  1. Name the three different jumper ports on diesel locomotives and their associated color.
    • Black = Control    
    • Blue = Communication  
    • Red = HEP
  2. What are the four things that will generally cause a governor shutdown?
    Low Water, Crankcase Overpressure, Hot Lube Oil, Low Lube Oil
  3. What type of governor fault must never be reset by a train crew?
    Crankcase Overpressure
  4. What is the password to enter the level two screen on Genesis Locomotives
  5. What is the standard brake pipe pressure for passenger trains and freight trains?
    Passenger = 110psi      Freight = 90psi
  6. What does the MU2A valve do?
    Cuts the independent brake valve in or out.
  7. Name the 4 MU hoses from the outside in?
    Independent Apply and Release, Actuating Hose, Main Reservoir Hose, Brake Pipe
  8. What are the
    positions of the Independent Brake?
    Release, Service Zone, Full Application
  9. What are the positions for the automatic brake?
    Release, Min Reduction, Service Zone, Full Service, Suppression, Handle Off, Emergency
  10. What does the Triple Valve do?
    Charges, Applies and Releases the Brake System
  11. What is the Dead Engine Feature?
    A feature of the air brake system by means of which the main reservoir is charged from the brake pipe
  12. Which side on locomotives would the No1 and No2 Main reservoirs be located on?
    No 1 = Fireman’s side,  No 2 = Right Side
  13. Who can perform a Class 1 Brake Test?
    Only a QMP
  14. When is a train required to have a Class 1A brake test? (2 items)
    • When it has not been used for 12 hours after its Class 1 brake test
    • If it has been off air for more than 4 hours
  15. Instructions found in the MN-401 supersede the Operating Rules. (True/False)
  16. A brake test and inspection performed
    by a qualified person who may be a member of the road crew, to determine brake
    pipe integrity and continuity from the controlling unit to the rear unit of a
    passenger train.
    Class 2 Brake Test
  17. When performing a roll by
    inspection, at what speed are you permitted to operate?
    A speed below 5mph
  18. When removing locomotives from a train, what position must the angle cock be left in on the cars left standing?  What should be applied to the cars left standing?
    Open, Handbrakes or chocks
  19. Passenger trains dispatched from any initial terminal must have operative air brakes on?
    Every Locomotive, Car and coach in the train
  20. A train must not be dispatched from any terminal with inoperative?
    Air Brakes, Hand brake or parking brake on the lead or rear locomotive/car
  21. What is the Formula for calculating the percentage of inoperative Air Brakes?
    Total Axles – Cutout Axles / Total Axles
  22. When calculating inoperative brakes on a locomotive each axle will count as?
    2 axles
  23. When calculating inoperative
    brakes on M series equipment how will the equipment be considered?
    As a regular car
  24. When is a Class 2 brake test
    required? (4 Items)
    • On every train prior to departure from any terminal or turn around point when the road crew has not participated in a Class 1 brake test or performed a Class 1A brake test
    • When changing controlling ends, or when the lead or rear locomotive/car is changed
    • After an angle cock is closed on a train for any reason and then reopened
    • When adding or removing pretested cars and the train air brake system remains charged
  25. When is a Running Brake Test Required? (3 Items)
    • On all trains immediately after departing any terminal or turnaround point
    • Where any action is taken that could reduce effective braking en route.   i.e. cutting out brakes
    • Upon the initial movement of equipment to, from or within a yard
  26. How do you perform a Class 2 brake test on M2, M3, M4 or M6 series equipment?
    • 1) Upon proper signal place MC in coast and observe brake release on the rear unit indicated 0psi Brake Cylinder pressure
    • 2) Release MC to test safety control, observe the brake pipe on the rear unit is at 0psi
    • 3) Upon proper signal place the MC in “bmax” and recharge train
    • 4) Release Handbrakes
    • 5) Upon Proper signal Place MC in the coast position and observe brake release indication6) Place MC in “Bmax”  test complete 
  27. How would you perform a Class 2
    brake test on M7/M8 series equipment?
    • 1) Upon proper signal place MC to coast, Observe 0psi Brake Cylinder pressure on rear unit
    • 2) Place the MC in min brake and test the alertness device and observe penalty brake application
    • 3) Acknowledge and move MC to “Max Brake” to reset penalty
    • 4) Release Parking brakes
    • 5) Place MC to coast and observe brake release indication
    • 6) Place MC in the “Max Brake” position.
  28. How would you perform a Class 2 Brake test on a Genesis Locomotive?
    • 1) Upon proper signal, make a Full Service Brake Pipe Reduction
    • 2) Observe brake application on rear unit, or that air gauge indicates application of Brake Cylinder Pressure
    • 3) Upon proper Signal, Release the automatic brake and observe that brakes release on rear unit or air gauge indicates 0psi Brake Cylinder pressure
  29. If a train fails the Running Brake
    test what should you do?
    Stop the train immediately.  Repeat test after cause of failure has been ascertained and corrected.
  30. Trains with enroute running gear
    defects must not be move beyond?
    The first forward Designated Repair Facility
  31. Can a passenger train be dispatched from any terminal or turnaround point with a defective alertness/deadman control device(s) in the leading unit?
  32. Passenger trains must not be
    dispatched from any terminal with inoperative end doors or side doors unless?
    (4 Items)
    • A QMP or QP determines it is safe to move the equipment in passenger service
    • A decal or tag is displayed on the defective door
    • At least one operative door is available on each side of the car
    • The inoperative door must be repaired before the next Interior Calendar Day Mechanical Inspection
  33. What is the name of the Air Brake Test that is used for Freight Equipment?
    Initial Terminal Air Brake Test
  34. When performing an Initial Terminal or Road Train Air Brake Test the pressure gradient be from the lead unit to the rear car must not differ more than?
    No more than 15psi
  35. How would you perform a leakage test?
    • Upon proper signal make a 15psi reduction in the Equalizing Reservoir
    • After air stops exhausting, move pilot valve to the out position
    • Wait 30 seconds and then observe the Brake Pipe leakage for one minute
    • Leakage must not exceed 5psi for that minute
Card Set:
Mechanical Study Questions
2015-12-17 16:31:27

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