The Traveling Engineers' Association - LightNovelsOnl.com
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26. Q. What is to be done if a combination lever should break?
A. Tie combination lever plumb, same as for a broken cross-head arm, if it is possible. If not possible, take down the combination lever and valve rod and cover the ports.
27. Q. What is to be done if a valve rod breaks?
A. Take down the broken parts and cover ports, leaving the rest of the gear intact.
28. Q. What is to be done if a reverse yoke breaks?
A. If lugs for holding reach rod breaks, block yoke securely at whatever cut-off you wish to work the engine and take down the short reach rod.
If break is below the lugs, do the same as for broken eccentric rod.
29. Q. What do you do if reach rod should break?
A. If short reach rod breaks, block the yoke at cut-off desired and wire fast so it cannot move. If main reach rod breaks, block between tumbling shaft arm and cross-tie brace, wiring same securely.
30. Q. What is to be done if the engine breaks down other than valve gear?
A. In this case do the same as for any other valve.
=SOUTHERN VALVE GEAR=
1. Q. If the eccentric crank or eccentric rods fail?
A. Disconnect the eccentric rod from crank, radius hanger and transmission yoke, tie up the hanger and yoke, clamp valve central position and proceed.
2. Q. If radius hanger fails?
A. Disconnect the hanger from rod and take down eccentric rod, clamp valve in central position and proceed.
3. Q. If transmission yoke fails?
A. Disconnect from the eccentric rod and clamp valve in central position and proceed.
4. Q. If horizontal arm of bell crank fails?
A. Disconnect the yoke from the eccentric rod, tie up to clear, clamp valve in central position and proceed.
5. Q. If vertical arm to bell crank breaks?
A. Clamp valve in central position and proceed. Take the broken arm down if necessary.
6. Q. If one auxiliary reach rod or reverse shaft arm fail?
A. Block both link blocks in same position of links, and in such a position as to give port opening enough to start train and control speed by throttle.
7. Q. If main reach rod, or middle arm to reverse shaft fail? If both auxiliary reach rods fail?
A. Block link blocks in full valve travel, controlling power and speed with the throttle.
=LUBRICATION=
1. Q. What produces friction, and what is the result of excessive friction?
A. Friction as considered in locomotive service is produced by one body being rubbed across the surface of another when they are held in contact by pressure, and the result of excessive friction is heat more or less intense and the destruction of the journal and its bearing or the roughening of the sliding surfaces.
2. Q. What is lubrication and its object?
A. The object of lubrication is to interpose a film of oil, grease or some lubricant between the two surfaces that will prevent these rubbing surfaces from coming into too intimate contact.
3. Q. What examinations should be made by the engineer to insure successful lubrication?
A. See that all oil holes are open, cups filled and in good working order, the packing in cellars evenly put in and in contact with the journal. That waste on top of driving or truck boxes is in proper shape, also that grease cups are filled, and the plugs and jam nuts in good shape, and that the grease cellars contain sufficient grease for the next trip.
4. Q. How should feeders of all oil cups be adjusted?
A. To feed as small a quant.i.ty of oil as possible and regularly to give perfect lubrication.
5. Q. Why is it bad practice to keep engine oil close to boiler in warm weather?
A. The oil is thinned to such a degree by the heat of the boiler that it runs off as soon as applied, and very often a hot bearing is the result.
6. Q. In what manner would you care for a hot bearing if discovered on the road?
A. Use as much time as available in cooling the same, making sure that all moving parts are free and carefully lubricated before proceeding.
7. Q. What kind of oil should be used on hot bearings?
A. Use engine oil unless the temperature of bearing consumes it, when a small quant.i.ty of valve oil may be used while the bearing is warm enough to make this oil flow. The valve oil must be removed as soon as the bearing cools to prevent reheating.
8. Q. At completion of trip what is necessary?
A. Close all adjustable feeds and examine all lubricated parts by contact with the hand to determine that they are not above running temperature.
9. Q. How would you determine what boxes to report examined? Why not report all boxes examined?
A. By placing the hand on driving box, on hub of engine truck wheel and on top of tender truck boxes nearest the bra.s.s, and would not report them examined unless the temperature of same was above running heat. It is not necessary to report all boxes examined, because they do not all give trouble at the same time. If this report was made, it would appear that a proper inspection had not been made and would result in unnecessary work and waste of material.
10. Q. Why is it bad practice to disturb the packing on top of driving and engine truck boxes with spout of oil can when oiling engine?
