TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
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REFERENCE INFORMATION These tests check the strength of the batteries during engine cranking. lf you don't have STE/lCE-R, skip this step, but remember that you haven’t tested the batteries under load. STARTER NEG. CABLE VOLTAGE DROP STE/ICE-R TEST 69 1. Start Test 69, starter negative cable voltage drop. 2. Displayed reading is in volts. The cable voltage drop should be less than 0.25 volts maximum. TM 9-2320-280-20-1 BATTERY CIRCUIT BATTERY INTERNAL RESISTANCE STE/ICE-R TEST 73 1. Disconnect wire 54A at injection pump to prevent stating. 2. Disconnect glowplug controller and fan solenoid. 3. Start Test 73, battery internal resistance. 4. Waif for the GO massage. Crank the engine. 5. Result is displayed in milliohms. Battery resistance should be 25 milliohms max. BATTERY RESISTANCE CHANGE STE/lCE-R TEST 75 1. Disconnect wire 54A at injection pump to prevent starting. 2. Disconnect glowplug controller and fan solenoid. 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 69 1. Connect RED dip to the indicated test point, BLACK clip to negative or ground. 2. Start Test 89, DC Volts. 3. Displayed reading is in volts. 2-255