TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
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TM 9-2320-280-34 14-15. THERMOSTAT SWITCH REPLACEMENT This task covers: a Removal b. Installation INITIAL SETUP: Applicable Models Manual References M997, M997A1, M997A2 TM 9-2320-280-24P Tools Equipment Condition General mechanic's tool kit: Heater/air-conditioning control box removed automotive (Appendix G, Item 1) (para. 14-14). Materials/Parts Maintenance Level Lockwasher (Appendix E, Item 81) Direct support a. Removal 1. Remove two screws (11) securing panel (12) to bracket (16). 2. Remove four corner screws (13) securing panel (12) to control box (1) and pull panel (12) away for access to leads (5) and (9). 3. Remove capscrew (3), lockwasher (2), clamp (4), heater cable (14), probe (10), and harness (15) from bracket (16). Discard lockwasher (2). 4. Remove knob (7), nut (8), and switch (6) from panel (12). NOTE Prior to removal, tag leads for installation. 5. Disconnect leads 720D (5) and 436 (9) from switch (6) and remove switch (6). b. Installation CAUTION Handle cold control probe carefully to prevent damage to probe. 1. Install switch (6) on panel (12) with nut (8) and knob (7). 2. Connect leads 720D (5) and 436 (9) to switch (6). 3. Install heater cable (14), probe (10), and harness (15) on bracket (16) with clamp (4), lockwasher (2), and screw (3). NOTE Check for loose or disconnected wires before installing panel. 4. Install panel (12) on control box (1) and bracket (16) with four screws (13) and two screws (11). 14-86