TM 5-4320-300-14Table 4-2. Organizational Maintenance Troubleshooting - ContinuedMALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION9. UNUSUAL EXHAUST NOISEWARNINGHandling hot exhaust shield, exhaust pipe,muffler, and weather cap can cause severeburns. Permit unit to cool before handling.Step 1. Check exhaust system for loose or damaged parts.a. Remove exhaust heat shield mounting screws and exhaust heat shield.b. Inspect muffler for holes or other damage.If muffler has holes or is damaged seriously in other ways, replace as described inparagraph 4-17.c. Inspect manifold, clamp, and exhaust manifold pipe for cracks, breaks, or other damage.If clamp or exhaust manifold pipe is damaged, replace as described in paragraph 4-18.If manifold is damaged, notify direct support maintenance.d. Inspect exhaust system connections and mounting nuts and bolts for tightness. Make surethat gasket material is in place.Tighten any loose nuts and bolts.4-71
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