TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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TM 9-2320-387-24 -1 REFERENCE INFORMATION INSTRUMENTS CIRCUIT -I Replace harness or repair wiring (para. 4-80). Replace rotary switch (para. 4-10). REAR OF ROTARY SWITCH DC VOLTAGE O-45 VOLTS SWICE-R TEST 89 1. Connect RED clip to the indicated test point, BLACK clip to negative or ground. 2. Stan Test 89, DC Volts. 3. Displayed reading is in volts. BAlTERY VOLTAGE MULTIMETER 1. Set the voltmeter to a DC volts scale of at least 40 volts. 2. Connect the RED lead to positive and the BLACK lead to negative. 3. Be sure to read the comxt scale. RESISTANCE AND CONTINUITY 04,500 OHMS STEKE-R TEST 91 1. Connect RED clip and BLACK clip to the indicated terminals in the question. RED to the first. BLACK to the second. 2. Start Test 91,0-4500 Ohms. 3. Displayed reading is in ohms. Less than 5 ohms is continuity. If the resistance is over 4,500 ohms, STE/lCE-R displays .9.9.9.9. CONTINUITY (RESISTANCE) MULTIMETER 1. Set the voltmeter to an ohms scale of about 1,000 ohms. 2. Connect the RED and BLACK leads to the connections stated in the question. 3. Be sure to read the correct scale. Less than 5 ohms indicates continuity. For an open circuit, the meter should peg full scale (needle all the way to the left). 2-351