TM 9-2350-277-20-5REPLACE M13 NBC HEATERS AND MOUNTS (M577A3 ONLY) — Continued 0796 0018. Remove four screws (33), eight washers (34), and four locknuts (35) from each operator’s heater (21), (22), and (23).Discard locknuts.19. Remove heaters from welded mounts (36), (37), and (38).0796 00-3
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