TM 9-2350-277-20-5REPLACE M14 NBC HEATER WIRING HARNESS (M113A3 AMBULANCE ONLY) —Continued0807 005. Remove circuit 538A lead (11) with ground lead (10) from air purifier (12).6. Loosen two mounting screws (13) securing air filter switch assembly (14) to transverse beam. Remove cover (15) fromswitch assembly.7. Remove circuit 579C lead (16) from air filter switch (17).8. Remove circuit 537F lead (18) from air filter ON lamp (19) and connector (20).9. Remove circuit 537G lead (21) from driver’s heater controller (22) and connector (20).0807 00-2
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