TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
Page 354 of 890
REFERENCE INFORMATION TM 9-2320-280-20-1 BATTERY CIRCUIT BATTERY INTERNAL RESISTANCE STE/ICE-R TEST 73 Replace batteries, refer to (para 4-79). NOTE Check these cables WIRE 68, correcting the batteries together. Test point is the positive terminal of one of the batteries. WIRE 49A, connecting the battery to the power stud. Test point is the power stud. Wire connecting the battery to the shunt. Test point is the negative terminal of the battery. Wire connecting shunt to ground stud. Test point is the shunt. Replace batteries, refer to (para 4-79). NOTE Tests 77 and 79 are TK tests that do the same thing that DCA tests 73 and 75 do. See TM 9-4910-571-12&P for instructions on how to run these tests. 1. Disconnect wire 54A at injection pump to prevent starting. 2. Disconnect glowplug controller and fan solenoid (to keep waveform clean). 3. Start Test 73, battery internal resistance. 4. Wait for the GO message. Crank the engine. 5. Result is displayed in milliohms. Battery resistance should be 25 milliohms max. BATTERY RESISTANCE CHANGE STE/ICE-R TEST 75 1. Disconnect wire 54A at injection pump to prevent starting. 2. Disconnect glowplug controller and fan solenoid (to keep waveform dean). 3. Start Test 75, battery resistance change. 4. Wait for the GO message. Crank the engine. 5. Result is displayed in milliohms/second. Battery resistance change should be 50 milliohms/second max. 0-45 DC VOLTS STE/lCE-R TEST 89 1. Connect RED clip to the indicated test point, BLACK dip to negative or ground. 2. Start Test 89, DC volts. 3. Displayed reading is in volts. 2-259/(2-260 Blank)