TM-9-2815-237-34 HMMWV Engine Direct Support & General Support Maintenance Manual Download
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Out of Chassis Run-In TM 9-2815-237-34 Section VI. FINAL INSPECTION 2-42. GENERAL Following any major repair to the engine, the engine must be run-in, and tests made prior to release for issue to user. Paragraph 2-43 contains instructions for engine run-in. 2-43. ENGINE RUN-IN This task covers: Out of Chassis Run-In INITIAL SETUP Test Equipment Manual References Dynamometer TM 9-2320-280-34 NOTE This procedure should be performed in a well-ventilated work area. If engine dynamometer is available, follow manufacturer’s instructions for its use. If dynamometer is not available, refer to TM 9-2320-280-34 for In Chassis Run-In. 1. Connect engine to dynamometer, CAUTION l Operating an engine without sufficient lubricating oil will cause damage to engine. ● If any leaks or abnormal noise is noted, stop engine immediately and correct as necessary. Any abnormalities must be corrected before proceeding to the next test interval. ● Oil pressure should be 40-50 psi (276-345 kPa) under load and 10 psi (69 kPa) minimum at idle. If oil pressure does not meet specifications, stop engine immediately and correct as necessary. ● Oil temperature must not exceed 260°F ( 127°C) and coolant temperature must not exceed 230°F (110°C). If coolant temperature or oil temperature exceed limits, stop engine immediately and correct as necessary. 2. Start engine and run-in according to schedule in table 2-1. 2-188