=Schroeder headlight=

1.  Q. What is the speed of a Schroeder headlight dynamo?

A. About 2,800 revolutions per minute.

2.  Q. How is the speed altered?

A. By a governor in the turbine.

3.  Q. How would you proceed to change the speed of the governor?

A. Remove cover No. 3 and loosen lock nut No. 14 and turn nut No. 13 to the right to increase the speed and to the left to decrease it.

4.  Q. What is a short circuit?

A. A connection between the positive and negative wires of the dynamo without any resistance between.

5.  Q. How does the dynamo act when short-circuited?

A. It will run very slowly as it is under a heavy strain.

6.  Q. What would be the result if left to run under that strain?

A. The armature or fields would burn out.

7.  Q. What would you do if a short circuit developed while on the road?

A. Shut the steam off and remove the positive or right-hand wire of the cab circuit from the dynamo, start up and see if the headlight went to work properly; if not, replace the cab wire and remove the positive or left-hand wire and see if the cab lights burned properly.  If such was the case, let it run, using the small incandescent light in the case for a headlight and report it at the roundhouse.

8.  Q. What is a volt?

A. The unit of pressure of electricity.

9.  Q. What is an ampere?

A. The unit of quantity of electricity.

10.  Q. What is the proper voltage of a Schroeder headlight?

A. About 28 volts.

11.  Q. Can a person be injured by that voltage?

A. No.

12.  Q. What is the proper amperage of a Schroeder headlight?

A. About 30.

13.  Q. How often should the ball bearings be oiled?

A. About three times a week.

14.  Q. How often should the governor be oiled?

A. Before leaving every trip.

15.  Q. What kind of oil should be used?

A. Valve oil.

16.  Q. Is it necessary to clean the electrode every trip?

A. No.

17.  Q. Why?

A. The dynamo is provided with shunt fields which build up the current regardless of the arc light.

18.  Q. What are the two causes of lamp burning green?

A. Speed too high, or wires to the lamp being reversed.

19.  Q. If the carbons burned away too fast, but otherwise the lamp appeared to be burning properly, where would you look for the trouble?

A. It would indicate that tripping spring No. 209 was too tight.

20.  Q. If tripping spring No. 209 was being annealed from heat and sparks were noticed at the clutch, where would you look for the trouble?

A. Flexible wire No. 251 would be broken.

="Buda-Ross” Electric headlight=