TM 9-2320-387-24-l
REFERENCE INFORMATION
STARTER CIRCUIT
BAlTERY VOLTAGE
STEIICE-R TEST 67
1. Start Test 67, Battery Voltage.
2. Displayed reading is in volts. Batteries
should be 23-25.5 volts. Batteries voltage will
drop when glow plugs turn on.
Replace batteries (para. 4-74).
BAlTERY INTERNAL RESISTANCE
STEIICE-R TEST 73
1. Disconnect wire 64A 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.
STARTER NEG. CABLE VOLTAGE DROP
STEIlCE-R TEST 69
Replace cables or starter (para. 4-72 or 4-l 1).
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 volt
max.
I
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 correct scale.
BAlTERY RESISTANCE CHANGE
STE/lCE-R TEST 75
1. Disconnect wire 64A at injection pump to
prevent starting.
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 60
milliohms/second
max.
DC VOLTAGE O-45 VOLTS
STEXE-R
TEST 69
1. Connect RED clip to the indicated test point,
BLACK clip to negative or ground.
2. Start Test 69, DC volts.
3. Displayed reading is in volts.
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 correct scale.
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