TM 5-6115-593-12TO 35C2-3-463-1Table 4-3. Organizational Troubleshooting-ContinuedMALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION5. ENGINE RUNS ERRATICALLY OR MISFIRES-continuedsetting AC PWR CKT BKR to OPEN.If engine now runs smoothly, reconnect load by setting AC PWR CKT BKR to CLOSE, andproceed to next step.Step 4.Check KW and KVAR readings on Generator Control Panel.If readings indicate excessive power draw, rearrange load distribution to restore normal powerconsumption.If KW and KVAR reading are normal, refer to next higher level of maintenance.6. ENGINE EXHAUST EXCESSIVELY BLACKVisually check fuel; if contaminated with water or dirt, drain fuel and fill with clean fuel. If fuel isnot contaminated, refer to Malfunction 5, Steps 1 through 4.7. ENGINE EXHAUST WHITE OR BLUEStep 1.Check for excessive lube oil using sight gauge, then dipstick.If lube oil level too high, drain crankcase (see paragraph 4-8) until proper level is indicated.Step 2.Visually check engine fuel for contamination (see Malfunction 6).If contaminated, replace fuel.8. GENERATOR OUTPUT FREQUENCY INCORRECTTest FREQ ADJ switch S5 (88, figure 4-22) in accordance with paragraph 4-40).Replace FREQ ADJ switch S5 if defective (see paragraph 4-40).NOTEIf S5 is not defective, inspect motoroperated potentiometer B4 (2, figure 4-19) according toparagraph 4-35 and refer to next higher level of maintenance for testing.4-27
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