TM-9-2350-261-20-1 Unit Maintenance Manual Volume 1 M113A2 M577A2 M1064 M1068 M1059 M901A1 Download
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TM 9-2350-261-20-1 PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING LUBRICATION INSTRUCTIONS — Continued 0120 00 ITEM NO. INTERVAL MAN- HOUR ITEM TO BE CHECKED OR SERVICED CREWMEMBER PROCEDURE EQUIPMENT NOT READY/ AVAILABLE IF: 8 Semi-annual Idle Test C A U T I O N Avoid lengthy engine idling. This causes coolant temperature to drop below operating temperature and can shorten engine life. a. Run engine at 800 RPM for 3-5 minutes with range selector in 2-3 range and brakes locked until operating temperature is reached. Engine runs hot or rough. b. If outside temperature is less than 85 F (29 C), normal operating temperature should be 160 to 200 F (71 to 93 C). If outside air temperature is greater than 85 F (29 C), normal operating temperature should be 160 to 230 F (71 to 110 C). c. With range selector in N, engine should idle smoothly at 650 to 700 RPM. d. High or low engine idle speed is usually caused by accelerator linkage being out of adjustment. Adjust linkage if necessary (WP 0401 00). e. Rough idling is usually caused by faulty injector timing and rack setting, faulty injectors, or air in the injection system. Notify direct support maintenance. 9 Semi-annual Governed No Load Test a. Run engine at 800 RPM for 3-5 minutes with range selector in 2-3 range and brakes locked until normal engine operating temperature is reached. Engine runs hot or rough. b. If outside temperature is less than 85 F (29 C), normal operating temperature should be 160 to 200 F (71 to 93 C). If outside air temperature is greater than 85 F (29 C), normal operating temperature should be 160 to 230 F (71 to 110 C). c. With engine quick-disconnect lever in NEUTRAL, slowly open throttle control until accelerator is fully depressed. 0120 00-23 º º º º º º º º º º º º º º º º º º º º º º º º