CHAPTER 10:  MAINTENANCE OF PERSONNEL HEATER AND CONNECTING TM 9-2350-256-20 COMPONENTS, AND FIXED FIRE EXTINGUISHER SYSTEM 10-6 REPLACE/SERVICE FIRE EXTINGUISHER SYSTEM CONTROLS AND LINKAGECS-Continued c.  ADJUSTMENT 1  Loosen two nuts (19 and 20) and back off screw (18 ) and stop (21). 2  Close shield (15) and insert quick-release pin (14) through shield and bracket (22) to locked position. 3  Push in button on manual control lever (30) and adjust screw (18) until it touches switch button. Back off screw 1/2 turn.  Tighten nut (19) to lock screw. 4  Turn stop (21) in until it seats firmly against rim of manual control lever (30).  Turn nut (20) in until it seats firmly against stop.  Remove quick-release pin (14) and open shield (15).  Tighten nut without allowing stop to rotate. 5  Repeat step 2 and check for switch operation and locked position of pin. NOTE Follow-on maintenance:     Install heater control box (see paragraph 6-12) 10-7 REPLACE FIRE EXTINGUISHER SYSTEM LINES AND NOZZLES THIS TASK COVERS a.  Removal b.  Installation INITIAL SET-UP Tools: Equipment Conditions: Tool kit, general mechanic's (Appendix C, item 53)   Stowage baskets removed as necessary (see Parts: paragraph 9-96)   Gaskets   (2) (Appendix G, item 82)   Oddment tray assembly removed (see paragraph   Gaskets (2) (Appendix G, item 82) 9-104)   Lockwashers (9) (Appendix G, item 116) 9-104)   Lockwashers (9) (Appendix G.  item 116)   Rocket ammunition storage box assembly   Lockwasher (Appendix GC, item 122) removed (see paragraph 9-99)   Lockwashers (29) (Appendix G, item 130)   Subfloor plates removed as necessary (see   Lockwashers (16) (Appendix G, item 132) paragraphs 9-1 through 9-23)   Nut, self-locking (Appendix GC, item 172)   Ring (Appendix G, item 235) a.  REMOVAL Remove lines and nozzles as required using illustrations as a guide. 1  Screw 9   Tube assembly 17  Tube assembly 25  Elbow 2  Lockwasher 10  Tee 18  Tube assembly 26  Bracket 3  Clamp 11  Tube assembly 19  Elbow 27  Screw 4  Tube assembly 12  Elbow 20  Tube assembly 28  Self-locking nut 5  Nipple 13  Tube assembly 21  Tube assembly 29  Clamp 6  Tube assembly 14  Nozzle 22  Tube assembly 30  Clamp 7  Coupling 15  Lockwasher 23  Valve assembly 31  Screw 8  Gasket 16  Screw 24  Tube assembly 32  Nut 10-22