TM 9-4310-394-135-5.INTRODUCTION. Continued.Refer to Table 5-1 to locate problematic symptoms, corrective action steps to isolate a faulty component, and referencesto provide corrective maintenance. The following paragraphs briefly explain the different headings of Table 5-1.a.Malfunction. This is a sequential listing of problematic symptoms. The malfunction number is used for crossreference purposes and to avoid needless repetition.b.TestorInspection. This suggests further test or inspection checks to localize the symptom cause to a morespecific area. It allows corrective action flexibility depending on the outcome of these checks.c.CorrectiveAction. This lists the corrective action or actions to be taken and the paragraph reference to locatethe step-by-step maintenance procedures to fix the fault.Table 5-1. Direct Support Troubleshooting.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION1.ENGINE WILL NOT START.Step 1.Check fuel injection pump.Check that fuel injection pump pumps fuel. Align/replace fuel injection pump.(Refer to para 5-8.)Step 2.Check fuel injection nozzle.Check that fuel injection nozzle is operating properly. Replace fuel injection nozzle.(Refer to para 5-7.)2. DROP IN ENGINE ROTATION SPEED.Step 1.Check exhaust smoke color (refer to Table 4-2).Refer to likely cause and perform repairs or adjustment as indicating in Table 4-2.Step 2.Check for faulty fuel injection valve.Check that injector spray pattern is correct and that fuel injector valve isfunctioning properly (see paragraph 5-7).If fuel injector valve is defective, replace it.5-2
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