TM 9-2350-256-10Table 3-1. Troubleshooting Procedures-Continued.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONGRENADE SYSTEM-Continued.Step 4.Check solenoid valves.With engine running, have someone turn smokegenerating system switch ON and OFF. Feel solenoidvalves to determine if they activate. Notify unitmaintenance of any apparent solenoid malfunction.Step 5.Check for voltage at solenoid valves.Notify unit maintenance of any lack of voltage.Step 6.Check ground connection.Repair as necessary.Step 7.Check for plugged, pinched, or damaged fuel tube assemblies.Notify unit maintenance.Step 8.Check for restricted fuel tube adapters in engine exhaust pipe.Notify unit maintenance.58.SMOKE PRODUCED IS OF POOR QUALITY OR QUANTITY.Step 1.Check for fuel leaking from hull drains or mixed with cooling air.Repair ruptured fuel hose or loose connection. Notifyunit maintenance.Step 2.Check for plugged, pinched, or damaged fuel tube assemblies.Notify unit maintenance.Step 3.Check engine fuel filters.Replace as necessary. Notify unit maintenance.Step 4.Check for restricted fuel tube adapters in engine exhaust pipe.Notify unit maintenance.59.VEHICLE SMOKES WHEN GENERATING SYSTEM IS NOT ACTIVATED.Step 1.Check for voltage at solenoid valves.If voltage is indicated, check wiring harness andbulkhead connectors for short circuit. Notify unitmaintenance.Step 2.Check solenoid valves.Replace solenoid valves if they do not shut off fuel flow.3-18
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