TM 9-2350-247-20-1PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDINGLUBRICATION INSTRUCTIONS — Continued0128 00ITEMNO.INTERVALMAN-HOURITEM TO BECHECKED ORSERVICEDCREWMEMBERPROCEDUREEQUIPMENTNOT READY/AVAILABLEIF:b. If outside air temperature is less than 85 degreesF (29 degrees C), normal operating temperatureshould be 160 to 200 degrees F (71 to 93degrees C). If outside air temperature is greaterthan 85 degrees F (29 degrees C), normaloperating temperature should be 160 to 230degrees F (71 to 110 degrees C).c. With range selector in N (M548A1) or SL(M548A3), engine should idle smoothly at 650to 700 rpm.d. High and low engine idle speed is usuallycaused by accelerator linkage being out ofadjustment. Adjust linkage if necessary(WP 0197 00 or WP 0200 00).e. Rough idling is usually caused by faulty injectortiming and rack setting, faulty injectors, or air inthe injection system. Notify your supervisor.83Semi-AnnualGovernedNo-Load Testa. Run engine at 800 to 1000 rpm for 3–5 minuteswith range selector in 2–3 range and brakeslocked until normal engine operatingtemperature is reached.b. If outside air temperature is less than 85 degreesF (29 degrees C), normal operating temperatureshould be 160 to 200 degrees F (71 to 93degrees C). If outside air temperature is greaterthan 85 degrees F (29 degrees C), normaloperating temperature should be 160 to 230degrees F (71 to 110 degrees C).c. With range selector in N (M548A1) or SL(M548A3), slowly open throttle control untilaccelerator is fully depressed.0128 00-89
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