. Air brake text for engineers and firemen; . vents air in the ro-tary valve chamber from leaking past the rotary valve key to theatmosphere. Spring 30 keeps the rotary valve key firmly pressedagainst washer 8 when no main reservoir pressure is 9 contains latch 11, which fits into notches in the quadrantof the top case, so located as to indicate the different positions ofthe brake valve handle. Handle latch spring 10 forces the latchagainst the quadrant with sufficient pressure to indicate eachposition. Removing the Parts. To remove the brake valves, thecocks should be closed an
. Air brake text for engineers and firemen; . vents air in the ro-tary valve chamber from leaking past the rotary valve key to theatmosphere. Spring 30 keeps the rotary valve key firmly pressedagainst washer 8 when no main reservoir pressure is 9 contains latch 11, which fits into notches in the quadrantof the top case, so located as to indicate the different positions ofthe brake valve handle. Handle latch spring 10 forces the latchagainst the quadrant with sufficient pressure to indicate eachposition. Removing the Parts. To remove the brake valves, thecocks should be closed and nuts 27 taken off. To take the valveproper apart, cap screws 28 should be removed. The brake valve should be located so that the engineer canoperate it conveniently from his usual position, while lookingforward or back out of the side cab window. 202 NO. 6 ET LOCOMOTIVE BRAKE EQUIPMENT. THE S-6 INDEPENDENT BRAKE VALVE. Plate 89 shows a vertical section through the center of thevalve and a horizontal section through the valve body, with the. PLATE valve removed, showing the rotary valve seat. Plate 90shows this valve similarly to Plate 89, with the addition of a top NO. 6 ET LOCOMOTIVE BRAKE EQUIPMENT. 203 view of the rotary valve. In these views the pipe connections andpositions of the handle are indicated. List of Parts. Referring to Plate 90, the names of the partsare as follows: 2. Pipe Bracket. 16. Latch Spring. 3. Rotary Valve Seat. 17. Latch Screw. 4. Valve Body. 18. Latch. 5. Return Spring Casing. 19. Cover , Return Spring. 20. Oil Plug. 7. Cover. 21. Bolt and Nut. 8. Casing Screw. 22. Bracket Stud. 9. Rotary Valve. 23. Bracket Stud Nut. 10. Rotary Valve Key. 24. Upper Gasket. 11. Rotary Valve Spring. 25. Lower Gasket. 12. Key Washer. 26. Lower Clutch. 13. Upper Clutch. • . ■ 2j. Return Spring Stop. 14. Handle Nut. 28. Cap Screw. 15. Handle. Ports and Grooves. Port h in the seat leads to the reducingvalve pipe. Port, a leads to that portion of the
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