figure 4-30d . D i s a s s e m b l y . R e f e r t o f i g u r e 4 - 2 9 a nddisassemble drain valve.e. Cleaning and Inspection.(1) Clean all parts with cleaning solvent anddry thoroughly.(2) Inspect all parts for breaks, cracks, andclam aged threads. Replace a damaged part.f . R e a s s e m b l y . R e f e r t o f i g u r e 4 - 2 9 a ndreassemble drain valve.g. Installation.(1) Tighten setscrew (5).(2) Replace manhole cover (para 4-41).(2) Pull control lever (5, fig. 4-27) to CLOSEposition and remove dust cap (17).( 3 ) I n s u r e t h a t t a n k h a s b e e n c o m p l e t e l ydrained and thoroughly flushed before enteringt a n k.(4) Enter tank thru manhole opening.(5) Refer to figure 4-30. Loosen adjusting bale(6), disengage lift rod (7) from adjusting bale andremove lift rod.(6) Outside the tank, remove six nuts (24)holding valve to sump ring (8) and remove valveassembly.4-44. Discharge Valve Assemblya. Removal.(1) Remove manhole cover (para 4-41).4-42
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