TM-9-2350-247-20-1 Unit Maintenance Manual Volume 1 M548A1 M548A3 Tracked Cargo Carrier Download
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TM 9-2350-247-20-1 PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING LUBRICATION INSTRUCTIONS — Continued 0128 00 ITEM NO. INTERVAL MAN- HOUR ITEM TO BE CHECKED OR SERVICED CREWMEMBER PROCEDURE EQUIPMENT NOT READY/ AVAILABLE IF: 89 Semi- Annual Governed No-Load Test a. Run engine at 800 to 1000 rpm for 3-5 minutes with range selector in 2-3 range and brakes locked until normal engine operating temperature is reached. b. If outside air temperature is less than 85 degrees F (29 degrees C), normal operating temperature should be 160 to 200 degrees F (71 to 93 degrees C). If outside air temperature is greater than 85 degrees F (29 degrees C), normal operating temperature should be 160 to 230 degrees F (71 to 110 degrees C). c. With range selector in N (M548A1) or SL (M548A3), slowly open throttle control until accelerator is fully depressed. C A U T I O N When you suspect a faulty governor, do not exceed 3,000 rpm on engine for more than 2 or 3 seconds. d. Engine speed may exceed 3,000 rpm momentarily, but should stabilize at 2,925 to 2,975 rpm. If governor cuts in and out or surges at this speed, adjustments are needed. Notify your supervisor. 0128 00-110 Change 1