TM 10-4930-236-13&PTable 5-1. Direct Support Maintenance Troubleshooting-CONTMALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION1 ELECTRIC MOTOR WILL NOT RUNStep 1.Check for foreign material in volute housing that would prevent the impeller from turning. (Para. 5-4)Remove foreign material.Step 2.Check electric motor for proper operation.Replace motor. (Para. 5-4)2 PUMP IS NOISYStep 1.Check for foreign material in volute housing. (Para. 5-4)Remove foreign material.Step 2.Check for loose impeller.Tighten impeller or replace defective parts. (Para. 5-4)3 PUMP LEAKSStep 1.Inspect for defective gaskets, O-rings and seals or mounting screw compression inserts.Replace defective parts. (Para. 5-4)4 TANKS WILL NOT BOTTOM LOADBottom loading valve malfunction.Remove and repair bottom loading valve (Para. 5-8)5 FUEL FLOW WILL NOT STOP WHEN TANK IS FULLBottom loading valve malfunction.Remove and repair bottom loading valve. (Para. 5-8)5-2
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