TM 9-2320-279 -20-1
Troubleshooting Malfunctions (Cent)
2-15. TROUBLESHOOTING INSTRUCTIONS
2-9. Troubleshooting (Cent)
Test or Inspection
TANK LEVEL INDICATOR GAGE DOES NOT REGISTER PROPER FUEL LEVEL
From this point on, the tests for Model A (plastic sensor) and Model B (brass sensor)
are different. Do steps 13 through 16 for Model A and steps 17 and 18 for Model B.
Step 13. Connect batteries (para 7-91). Check for defective TLI TANK LEVEL INDICATOR adjuster.
Disconnect red wire connector. Disconnect phototransistor connector (male socket and
female pin). Set TLI TANK LEVEL INDICATOR switch to ON. Check for 1.2 to
each female pin, using red wire as ground.
If voltage is lower than 1.2vdc or higher than 8
replace tank level indicator