TM 10-4320-303-134.10.2 6InchButterflyValveAssemblyMaintenance .This task covers:4.10.2.1Removal4.10.2.4Repair4.10.2.2Disassembly4.10.2.5Assembly4.10.2.3Inspection4.10.2.6InstallationINITIAL SETUPToolsMateriel/PartsTool Kit, General Mechanic's,Lock washers (TM 10-4320-303-23P)Automotive, Section III, Item 1,Preformed packing (TM 10-4320-303-23P)Appendix BGeneralSafetyInstructionsEquipment ConditionsDo not work on equipment without followingPumping station shutdown, refer tostandard shop safety precautions.applicable technical manual.4.10.2.1 Removal.NOTEThere are 3 versions of the 6 Inch Butterfly Valve assembly used with TWDS.These procedures cover the 6 Inch Butterfly Valve shown. The maintenanceprocedures for the others are similar.Figure 4-3. 6 Inch Butterfly Valve Assembly Removal.a. Remove two grooved-end pipe quick-disconnect coupling clamps (Figure 4-3, 1) securing 6 inch butterflyvalve assembly (2) to 6 inch X 20 foot hose assembly (3) and lateral grooved pipe fitting (4).b. Remove 6 inch butterfly valve assembly (2).4.10.2.2 Disassembly.a. Remove two bolts (Figure 4-4, 1), lock washers (2) and remove handle assembly (3) from mounting plate(4). Discard lock washers (2).4-16
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