4-1.1 ENGINE PERFORMANCE CHECK OPERATIONAL CHECK(Continued)TASKRESULT1. Have pilot start NO. 1 engine and stabilize atIf NO. 1 engine N1 CONT. caution light (1), doesground idle.not come on, go to task 4-5.3.If engine does not motor, go to task 4-4.4.If engine NO. 1 STARTER ON Iight (2) does notcome on, go to task 4-4.4.If engine motors normally but does not start, go totask 4-4.4.If engine oil pressure indicator (3) does not indi-cate oil pressure, go to task 8-3.3.If engine oil pressure IS below 20 psi, go to task 8-3.3.If gas producer tachometer (4) does not indicaterpm, go to task 8-2.3.If PTIT Indicator (5) does not Indicate temperature,go to task 8-5.3.If PTIT indicator is high or hot start occurs, go totask 4-1.2.If copilot’s rotor tachometer (6) does not indicaterpm, go to task 8-15.3.2. Check NO. 1 engine ground idle speed afterIf gas producer tachometer (4) does not indicate45seconds.between 60 and 63 percent rpm, go to task 4-1.3.TM 55-1520-240-T4-1.1TASKRESULTIf engine motors normally but does not start, go totask 4-4.4.4.5.6.Check NO. 2 engine ground idle speed after45seconds.Have pilot move both NO. 1 and NO. 2engine condition levers to flight and stabilizerotors at minimum beep.Have pilot beep both NO. 1 and NO. 2engines to 100percentrotor rpm and matchtorque.If engine oil pressure indicator (8) does not indi-cate oil pressure, go to task 8-3.3,If engine oil pressure is below 20 psi, go to task 8-3.3.If gas producer tachometer (9) does not indicaterpm, go to task 8-2.3.If PTIT indicator (10) does not indicate tempera-ture, go to task 8-5.3.If PTIT indication is high or hot start occurs, go totask 4-1.4.If pilot’s rotor tachometer (12) does not indicaterpm, go to task 8-15.3.If gas producer tachometer (9) does not indicatebetween 60 and 63 percent rpm, go to task 4-1.5.If either NO. 1 or NO. 2 engine N2 overspeeds, goto task 4-1.6.If either NO. 1 or NO. 2 engine acceleration isrough or surging, go to task 4-1.7.If dual engine minimum beep is not between 92-96percent,go to task 4-1.8.If either NO. 1 or NO. 2 engine power turbine (N2)actuator does not increase or decrease, go to task4-6.3.If either NO. 1 or NO. 2 engine oil pressure indica-tor (3 and 8) readings fluctuate more than 5psi,go to task 8-3.3.3. Have pilot start NO. 2 engine and stabilize atIf NO. 2 engine N1 CONT caution light (7) doesground idle.not come on, go to task 4-5.3.If engine does not motor, go to task 4-4.4.If engine NO. 2 STARTER ON light (11) does notcome on, go to task 4-4.4.GO TO NEXT PAGEChange 14-3
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