TM 9-2320-361-34 17-13. PERSONNEL HEATER IGNITER AND IGNITION CONTROL UNIT REPLACEMENT THIS TASK COVERS: a. Igniter Removal c. Ignition Control Unit Installation b. Ignition Control Unit Removal d. Igniter Installation INITIAL SETUP APPLICABLE MODELS MATERIALS/PARTS (Contd) All Nut-assembled lockwasher TEST EQUIPMENT Multimeter (Appendix B, Item 3) (Appendix F, Item 154) Igniter (Appendix F, Item 86) Two lockwashers (Appendix F, Item 122) TOOLS REFERENCES (TM) General mechanic’s tool kit (Appendix B, Item 1) TM 9-2320-361-34P Tool kit, electrical (Appendix B, Item 2) EQUIPMENT CONDITION MATERIAIS/PARTS Personnel heater guard and blower motor removed (para. 17-11). Two screw-assembled lockwashers (Appendix F, Item 169) NOTE Tag wires for installation. a. Igniter Removal 1. Remove nut (6), receptacle ground lead (13), ground strap (12), and lockwasher (11) from ignition control unit (8). Discard lockwasher (11). 2. Disconnect igniter leads (7) and (10) from ignition control unit (8) and igniter hatch cover (9). 3. Release two fly screws (14) and remove igniter hatch cover (9) from heater housing (15). CAUTION Igniter is fragile. Use care when removing igniter. Failure to do so may result in damage to equipment. 4. Press and turn igniter (18) 1/4 turn left and remove from igniter tube (17). Discard igniter (18). 5. Remove screw (16) and igniter tube (17) from heater housing (15). I b. Ignition Control Unit Removal NOTE Remove igniter before removing ignition control unit (subtask a). 1. Remove nut-assembled lockwasher (1), thermostat lead (5), receptacle lead (4), and ignition control lead (3) from overheat switch (2). Discard nut-assembled lockwasher (1). 2. Remove two screw-assembled lockwashers (19) and ignition control leads (20) from flame detector switch (23). Discard screw-assembled lockwashers (19). 3. Remove three screws (21), ignition control unit (8), and lockwasher (22) from heater housing (15). Discard lockwasher (22). 17-30