TM 9-2350-256-10Section III. M239 SMOKE GRENADE LAUNCHER4-8. CLEANING (WEEKLY).a.Clear debris from discharger barrels.b.Ensure drain holes in discharger barrels are clear by inserting a stiff wire.NOTEDo not use wire brush to clean discharger barrels.c.Clean discharger barrels with rifle bore cleaner (Appx. D, item 9) or soap (Appx. D, item 10) and water asapplicable.d.Wipe with dry cloth (Appx. D, item 40). Ensure no residue remains around tip plugs located at bottom center ineach discharger barrel.e.Lightly apply lubricant, small arms to pins in each discharger barrel.4-9. COVERS.After mission, install canvas covers to protect discharger barrels from dust and grit.4-5 (4-6 blank)
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