Quantcast EXCESSIVE  CRANKCASE  PRESSURE

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TM   5-2815-241-34&P TROUBLESHOOTING  ON  ENGINE  TEST  STAND  –  CONTINUED MALFUNCTION TEST  OR  INSPECTION CORRECTIVE  ACTION 13. EXCESSIVE  BLACK  SMOKE  UNDER  LOAD  –  CONTINUED. Step  5. Step  6. Step  7. Step  8. Step  9. Check for damaged fuel injector preformed packings (page 2-289). Replace  damaged  packings. Check  valve  adjustment  (page  2-106). Readjust   valves. Check  injector  timing  (page  2-106). Reset  injector  timing. Check engine for excessive blowby and wetness in exhaust caused by broken or damaged  rings. Isolate damaged cylinders and replace broken or damaged rings. Perform engine compression test. Check for cylinder head gasket leakage. Replace  leaking  gasket. 14.  EXCESSIVE  CRANKCASE  PRESSURE. Step  1. Check engine for excessive blowby and wetness in exhaust caused by broken or damaged  rings. Isolate damaged cylinders and replace broken or damaged rings. Step  2. Perform engine compression test. Check for cylinder head gasket leakage. Replace  leaking  gasket. 15.  EXCESSIVE  NOISE. Step  1. Check  vibration  damper  and  flywheel  for  damage  or  improper  installation. Replace damaged vibration damper and flywheel. Reinstall  vibration  damper  and  flywheel  correctly. Step  2. Check  valve  adjustment  (page  2-106). Readjust   valves. Step  3. Check  injector  timing  (page  2-106). Reset  injector  timing. Step  4. Check push tubes or cam followers for damage. Replace  damaged  push  tubes  (page  2-33)  and  cam  followers (page  2-47). Step  5. Check for scored pistons and cylinder sleeves. Replace  scored  pistons  and  cylinder  sleeves  (page  2-214). 2-430


 


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