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 337 of 985

TM 9-2320-279 -20-1

Troubleshooting Malfunctions (Cent)

~ 2-15.

TROUBLESHOOTING INSTRUCTIONS (CONT]. I

Table 2-9. Troubleshooting (Cent)

Vlalfunction

Test or Inspection

Corrective Action

TANKER SYSTEM (CONT)

I 1. TANK LEVEL INDICATOR GAGE DOES NOT REGISTER PROPER FUEL LEVEL (CONT).

FUSE

‘2–W

FUSED

LEAD

_

Lm

Glj

TA1 87420

NOTE

From this point on, do not install junction box covers, gage covers, or operate tanker

until problem is solved and this manual says to do so. Refer to FO- 1, sheets 3 and 4

for M978 Electric Diagram.

Step 6. Remove control junction box cover (para 7-49). Disconnect fuse holder and look for blown

fuse.

Replace blown fuse.

Step 7. Remove fused lead from TLI TANK LEVEL INDICA~R and APC AUXILIARY PUMP

CONTROL switches. Check wire resistance.

If resistance is more than zero ohms between fuse holder and wire terminals,

replace fused lead.

Step 8. Check for defective TLI TANK LEVEL INDICATY)R switch. Disconnect connectors. Check

switch resistance when TLI TANK LEVEL INDICA’IT3R switch is in the ON position.

If resistance is more than zero ohms, replace defective TLI TANK LEVEL

INDICA’IOR switch (para 7-49), install TLI TANK LEVEL INDICATOR gage cover

(para 7-86).

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