TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
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TM 9-2320-280-34 3 - 20. ENGINE RUN-IN This task covers: In Chassis Run-In INITIAL SETUP: Tools Equipment Condition General mechanic's tool kit: Engine installed in vehicle (para. 3-23 or 3-25). automotive (Appendix G, Item 1) General Safety Instructions Manual References Ensure engine compartment is free of all tools and TM 9-2320-280-10 working material before starting engine. TM 9-2320-280-20 Maintenance Level Direct support In Chassis Run-In WARNING Ensure engine compartment is free of all tools and working material before starting engine. Failure to do this may cause injury to personnel or damage to equipment. CAUTION If any leaks or abnormal noise is noted, stop engine immediately and correct as necessary. Any abnormalities must be corrected before proceeding. 1. Start engine (TM 9-2320-280-10) and allow engine to idle for five to ten minutes. 2. Stop engine and inspect oil level and coolant level (TM 9-2320-280-10). 3. Check for leaks. If any leaks are found, correct as necessary. NOTE It may be necessary to block air flow to radiator. 4. Start engine (TM 9-2320-280-10) and run at 1/4 to 1/2 engine throttle until coolant temperature reaches 165°-195°F (74°-90°C). 5. Repeat steps 2 and 3. 6. Set engine idle speed (TM 9-2320-280-20). FOLLOW-ON TASK: Follow break-in service (TM 9-2320-280-10). 3-44