TM 5-4310-387-145-5. Direct Support Troubleshooting Procedures . Refer to symptom index to locate the troubleshooting procedurefor the observed malfunction. Table 5-1 lists malfunctions that may occur during operation or maintenance of the aircompressor. Tests, inspections, and corrective actions should be performed in the order listed. If a malfunction beyondthe scope of direct support maintenance is discovered, refer the malfunction to general support maintenance.NOTEThis table is not intended to cover every possible symptom, but is rather a list ofthe more frequent problems and some of their causes.SYMPTOM INDEXSymptomPage1.Engine does not start ................................ ................................ ................................ ................................ ........ 5-22.Engine runs unevenly: low output ................................ ................................ ................................ ..................... 5-33.Engine races ................................ ................................ ................................ ................................ ................... 5-34.Engine exhaust emits excessive blue smoke................................ ................................ ................................ .... 5-35.Engine runs hot ................................ ................................ ................................ ................................ ................ 5-46.Excessive oil consumption ................................ ................................ ................................ ................................ 5-47.Unusual engine knocks and noises ................................ ................................ ................................ ................... 5-48.Compressor noisy ................................ ................................ ................................ ................................ ............ 5-49.Compressor pressure low ................................ ................................ ................................ ................................ . 5-510.Compressor output volume low ................................ ................................ ................................ .. 5-5Table 5-1. Direct Support Troubleshooting Procedures.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION1. ENGINE DOES NOT START.Step 1. Test for low compression.Proceed to step 2 if compression is low.Step 2. Inspect valves condition.Replace worn valves (para. 5-29).Step 3. Inspect head gasket for ruptured (blown) condition.Replace blown gasket (para. 5-29).Step 4. Test for faulty fuel injector and feed rate of pump.Replace faulty fuel injector (para. 5-27).5-2
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
