TM 5-1940-277-34TROUBLESHOOTING PROCEDURES (Continued)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION6.ENGINE OVERHEATS (ENGINE AUDIBLE ALARM ACTIVATES) (Continued)b.MK2Step 1.Stop engine and turn engine circuit switch OFF.Step 2.Check keel cooler for marine growth and other foreign matter. Also check for leaks, or any sign of corrosion.a.Clean keel coolers with metal brush.b.Replace keel cooler (refer to TM 5-1940-277-20).Change 72-10.4
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