TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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REFERENCE TM 9-2320-387-24-I INFORMATION STARTER ClRCUlT 0 II . l I WARNING Disconnect negative battery cable before disconnecting and reconnecting PCB harness. WARNING There is battery voltage at the PC6 at all times. Failure to disconnect battery cable will result in damage to equipment or injury to personnel. Replace harness or repair wiring (para. 4-80). n 0 II . . WARNING Disconnect negative battery cable before disconnecting and reconnecting PCB harness. WARNING There is battery voltage at the PCB at all times. Failure to disconnect battery cable will result in damage to equipment or injury to personnel. Replace harness or repair wiring (Pam. 4-80). b REAR OF ROTARY SWlTCl- WARNING Disconnect negative battery cable before disconnecting and reconnecting PC6 harness. WARNING There is battery voltage at the PCB at all times. Failure to disconnect battery cable will result in damage to equipment or injury to personnel. Replace PCB (refer to para. 4-4). VOLTAGE MULTlMETER 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 correct scale. 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). DC VOLTAGE O-45 VOLTS STEIICE-R TEST 89 I 1. Connect RED clip to the indicated test point, BUCK clip to negative or ground. 2. Start Test 89, DC Volts. 3. Displayed reading is in volts. RESISTANCE AND CONTINUITY 04,500 OHMS STE/lCE-R TEST 91 I 1. Connect RED ctip and BLACK clip to the indicated terminals in the question. RED to the first, BlACK to the second. 2. Start Test 91,0-4,500 Ohms. 3. Displayed reading is in ohms. Less than 5 ohms is continuity. If the resistance is over 4,500 ohms, STE/ICE-R displays .9.9.9.9. 2-287/(2-288 blank)