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 334 of 985

TM 9-2320-279 -20-1

Troubleshooting Malfunctions (Cent)

Table 2-9. Troubleshooting (Cent)

Vlalfunction

Test or Inspection

Corrective Action

TANKER SYSTEM (CONT)

Il .

TANK LEVEL INDICATOR GAGE DOES NOT REGISTER PROPER FUEL LEVEL.

E

Step 1. Check for jammed needle on TLI TANK LEVEL INDICA’IY3R gage. ‘Ihp dial face with hand.

Replace jammed TLI TANK LEVEL INDICATOR gage (para 7-86).

NOTE

●

The HEM’M’ tanker may be equipped with one of two types of fuel level sensors.

Each particular type of sensor has its own unique tank level indicator (TLI). One

type, Model A, has a plastic fuel level sensor while the other type, Model B, has a

brass fuel level sensor. Refer to TM 9-2320-279-34P for correct ordering

instructions.

c llmker manhole must be closed when testing Model A tank level indicator.

Model A fuel level sensor has phototransistors that are affected by light.

. Fuel level sensor will sometimes not read foamy fuel levels.

Step 2. Check for foamy fuel in tank. Open manhole (TM 9-2320-279-10).

Wait until foam settles before going further.

Step 3. Check for broken fuel level sensor in tank.

Replace broken fuel level sensor (para 7-88).

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