TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
Page 638 of 1258
TM 9-2320-280-34 14-10. AMBULANCE HEATER REPAIR (MODEL 10530A) (Cont’d) 12. Loosen two wing screws (1) and remove igniter cover (7) from housing (3). 13. Remove igniter (6) from tube (2) by pushing down and twisting counterclockwise to disengage from slots in tube (2). 14. Remove screw-assembled lockwasher (4) and igniter tube (2 ) from housing (3). Discard screw- assembled lockwasher (4). 15. Loosen nut (10) and disconnect fuel tube (11) from burner fuel inlet (8). 16. Remove secondary blower housing (5) from heat exchanger (9) and housing (3). 17. Remove two screw-assembled lockwashers (13) and ignition control leads (12) from flame detector switch (16). Discard screw-assembled lockwashers (13). 18. Remove three screw-assembled lockwashers (15) and ignition control unit (14) from housing (3). Discard screw-assembled lockwashers (15). 19. Remove two screw-assembled lockwashers (17) and leads (18) from flame detector switch (16). Discard screw-assembled lockwashers (17). 20. Loosen nut (19) and remove flame detector switch (16) from heat exchanger fitting (20). CAUTION The overheat switch is adjusted and sealed at the factory. To prevent damage, do not bend or twist the switch or change the setting of the adjustment screw. 21. Remove two screw-assembled lockwashers (22) and overheat switch (21) from housing (3). Discard screw-assembled lockwashers (22). 14-38