TM-9-2320-279-20-1

M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; ORGANIZATIONAL MAINTENANCE, VOLUME 1 OF 3

TM-9-2320-279-20-1 - Page 341 of 985

TM 9-2320-279 -20-1

Troubleshooting Malfunctions (Cent)

]

2-15. TROUBLESHOOTING INSTRUCTIONS (CONT). ]

Table 2-9. Troubleshooting (Cent)

Malfunction

Test or Inspection

Corrective Action

110

TANKER SYSTEM (CONT)

TANK LEVEL INDICATOR GAGE DOES NOT REGISTER PROPER FUEL LEVEL (CONT).

NOTE

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.

\\

FEMALE

MALE

n-,.

PIN

SOCKET

PHOTOTRANSISTOR

CONNECTOR

RED WIRE

Y’

Step 13. Connect batteries (para 7-91). Check for

FEMALE

PIN

TA187425

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 8.Ovdc on

each female pin, using red wire as ground.

If voltage is lower than 1.2vdc or higher than 8 .Ovdc, replace tank level indicator

adjuster (para 7-87) and install main junction box cover (para 7-47).