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 N O TE 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. l 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. l 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. l 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