22.  Q. How long before leaving terminal should the feed valves be opened?  Why?

A. About fifteen minutes; this time is necessary to allow oil to feed through the oil pipe and reach the steam chests.

23.  Q. How many drops should be fed per minute?

A. From one to seven, timed by the watch, depending on conditions. 
Cylinders of large size require more oil than smaller ones.

24.  Q. If lubricator feeds regularly when working steam and too rapidly after shutting off, what is the trouble?

A. The opening in the choke plug at the lubricator or through the steam valves at the steam chest is too large and should be reduced to the proper size by applying new chokes or valves.

25.  Q. When valves appear dry while using steam and the lubricator is working all right, what would you do to relieve these conditions?

A. Ease off throttle for a few seconds to reduce the steam chest pressure and drop the reverse lever a few notches to give the valve a longer travel; oil held in the pipes will then flow down.

=Federal regulations=

=For Inspection of Locomotive Boilers and Safety Appliances=

1.  Q. What is the purpose of the federal rules and regulations for inspection of locomotive boilers?

A. So that all railroads operating under the laws of the United States government, would be obliged to maintain their boilers in a safe working condition.

2.  Q. What is the purpose of the quarterly and monthly interstate inspection cards placed in the cab of the locomotive?

A. So that the federal inspector or engineer may see that the locomotive boiler has received its monthly or quarterly inspection.

3.  Q. What constitutes a safety appliance, as applied to a locomotive?

A. Any appliance that is placed on a locomotive for the purpose of protecting the employees from personal injury.

4.  Q. Name some of the safety appliances found on a locomotive?

A. Shield for tubular glass lubricators, also shields for water glass, automatic couplers, with lever attachments, air brakes, etc.

5.  Q. In what condition should safety appliances be maintained?

A. They should be maintained in first class condition.

6.  Q. What should be done in event of any of the safety appliances being damaged while engine is in service so as to render it unsafe?

A. Warn all employees whose duties require them to work around the locomotive of its unsafe condition, then make report to those in authority so that it may be taken out of service until repairs are made.

7.  Q. What effort should be made on the part of the engineer to prevent persons using a safety appliance which he knows is damaged and unsafe?

A. He should use such precaution as in his judgment would protect from injury all persons who are on or around the locomotive.