TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 2 Download
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TM 9-2320-280-20-2 4-27. COLD ADVANCE SWITCH REPLACEMENT This task covers: a Removal b. Installation INITIAL SETUP: Tools Manual References TM 9-2320-280-24P General mechanic’s tool kit: automotive (Appendix B, Item 1) Materials/Parts Sealing compound (Appendix C, Item 44) Equipment Condition Battery ground cable disconnected (para. 4-73). Engine coolant drained as necessary (para. 3-60). Engine access cover removed (para. 10-15). NOTE The cold advcance switch is located in the right cylinder head water jacket at the rear of the cylinder head just above the exhaust manifold. Prior to removal, tag leads for installation. a. Removal 1. Disconnect leads 569G (1) and 569B (3) from engine harness (2). 2. Remove cold advance switch (5) from engine (4). b. Installation 1. 2. Apply sealing compound to threads of cold advance switch (5). Install cold engine (4). Connect leads 569G (1) and 569B (3) to engine harness (2). FOLLOW-ON TASKS: Connect battery ground cable (para. 4-73). Fill cooling system (para. 3-60). Install engine access cover (para. 10-15). advance switch (5) in 4-47