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 319 of 985

TM 9-2320-279-20-1

Troubleshooting Malfunctions (Cont)

2-15. TROUBLESHOOTING INSTRUCTIONS (CONT).

Table 2-9. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

TANKER SYSTEM (CONT)

3. FUEL FLOW DOES NOT STOP WITHIN 15 SECONDS AFTER OPENING V12 B/L PRECHECK

VALVE WHEN BOTTOM LOADING WITH EXTERIOR PUMP.

Step 1. Remove V12 bottom load PRECHECK VALVE to V19 jet level sensor valve tubing

(paras 25-26 and 25-32). Check for blocked or damaged V12 bottom load PRECHECK VALVE

to V19 jet level sensor valve tubing.

Clean blocked tubing. Replace damaged V12 bottom load PRECHECK VALVE to

V19 jet level sensor tubing.

Step 2. Remove V12 bottom load PRECHECK VALVE (para 25-26). Check for damaged V12 bottom

load PRECHECK VALVE. Check for dirt and debris in V12 bottom load PRECHECK VALVE

and in connection to V2 bottom load adapter.

Remove dirt and debris. Replace damaged bottom load V12 PRECHECK VALVE.

2-226