Adjustable Exhaust Valve

Figure 4-16. Adjustable Exhaust Valve, Replace

TM-5-4220-225-14 Firefighting Truck 100 Ft Aerial Ladder 1000 GPM Manual
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TM 5-4220-225-14 4-23. Adjustable Exhaust Valve. This task covers: a. Replace b. Repair INITIAL SETUP: Tools Materials/Parts 0-50 in.-lbs Torque Wrench (Item 14, Appendix B) Adjustable Exhaust Valve Socket Wrench Adapter (Item 41, Appendix B) Halocarbon Grease (Item 10, Appendix E) 5/32-inch Hex Wrench (Item 23, Appendix B) 1/4-inch Hex Wrench (Item 25, Appendix B) Reference Insert, Hex (Item 54, Appendix B) Para. 4-11 General a. Replace. (figure 4-16) WARNING Cleanliness is imperative in maintaining and handling diving system components. All tools and parts must be kept free of oil, grease, rust, or other contamination in accordance with accepted Army diving cleaning procedures. Foreign substances within an assembly could result in equipment failure and possible injury or death to personnel. Ensure that all air lines and components removed or openings into the air system that provides breathing air are covered with a plastic bag and secured with a rubber band or taped shut. Small components should be stored in a plastic bag and sealed. Failure to do so will cause air system to become contaminated and could result in injury or death to the diver. (1) Line up cutout in handle (1) with screw (2) and remove screw (2) and lockwasher (3). (2) Line up cutout in handle (1) with screw (4) and remove bolt (4), lockwasher (5), cover (6) with handle (1) installed and spring (7). (3) Remove chin button (8). (4) Remove poppet valve (9) and preformed packing (10). (5) Remove two screws (11) and washers (12) and remove valve body (13) and preformed packing (14). NOTE Use only enough lubricant to coat preformed packings without excess. (6) Apply a thin film of lubricant to all new preformed packings. 4-46

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