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Page Title: Drop-out Ball Valve.
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TM 5-4210-220-12 4-18 PUMP, PIPING, AND VALVES - Continued 4-18.4 2 1/2 Inch Drop-out Ball Valve. This task covers a. Removal b. Installation TOOLS MATERIAL/PARTS Shop Equipment, Automotive 22, Appendix E Pipe Sealant Maintenance and Repair, 27, Appendix E Silicone Grease NSN 4910-00-754-0705 29, Appendix E Threadlock Liquid 4, Appendix G Retainer Removing Tool 57295 O-Ring (Actuator Shaft) 57321 O-Ring (Pivot Bolt) EQUIPMENT CONDITION 57378 O-Ring (Body) Main Engine Shutdown (see para. 2-10) 63820 Seat APU Shutdown (see para. 2-12) 57414 O-Ring (Seat) Batteries Disconnected (see para. 4-24) 57313 O-Ring (Retainer) Heat Shields Removed (see para. 4-11) (as required) All Piping Drained NOTE The following valves are 2 1/2 in. drop-out ball valves (1) Rear suction (2) Side suction (3) Rear discharge (4) Side discharge (4 off) (5) Roof turret manual NOTE This removal procedure is used for all 2 1/2 in. ball valves regardless of their location on the firefighting system. REMOVAL (1) Remove  nut  (1)  and  separate  the  control  rod  linkage  (2) from the control handle (8). (2) Set  control  handle  (8)  to  the  open  position  to  eliminate damage to the ball during removal of the valve body (5). (3) Remove  capscrews  (3)  that  retain  the  end  caps  (4)  to  the valve body (5) Some valve bodies are connected to piping on one end only. (4) Slide valve body (5) from between end caps (4). (5) Remove   O-rings   (6)   from   valve   body   (5)   grooves   and discard. 4-226

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