REFERENCE INFORMATION
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Replace batteries (para. 4-74).
NOTE
Check these cables:
WIRE 66, connecting 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 (para. 4-74).
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NOTE
Tests T7 and 79 are TK tests that do the
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same thing that DCA tests 73 and 76
do. See TM 9-491M71-12&P
for
instructions on how to run these tests.
TM 9-2320-387-24-l
BATTERY CIRCUIT
BAlTERY INTERNAL RESISTANCE
STUICE-R TEST 73
1. Disconnect wire 54A at injection pump to
prevent starting.
2. Disconnect glow plug 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.
BAlTERY RESISTANCE CHANGE
STUICE-R TEST 75
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1. Disconnect wire 54A at injection pump to
prevent stating.
2. Disconnect glow plug controller and fan
solenoid (to keep waveform clean).
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.
DC VOLTAGE O-45 VOLTS
STEllCE-R TEST 89
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1. Connect RED clip to the indicated test point,
BLACK clip lo negative or ground.
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2. Start Test 69. DC Volts.
3. Displayed reading is in volts.
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