TM 5-3805-255-14
0088
ENGINE RUN-IN CONTINUED
00088
In Vehicle Run-In Procedure
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1. Install necessary diagnostic instruments.
2. Operate engine at No Load at 550 to 600 RPM to check for leaks in water, lube oil, fuel, and air induction
systems; time required: 5 minutes maximum.
3. Operate vehicle at 3/4 rated speed (RPM) and 1/2 load for that speed; time required: 5 to 10 minutes
maximum.
4. Operate vehicle at full load and rated speed while maintaining normal operating temperature of engine and
torque converter; time required: 35 to 40 minutes.
5. Recheck for oil, air, and water leaks, retighten cylinder head stud nuts, and adjust valve lash (WP 0018).
Inspect and replace oil filter elements if necessary.
6. Continue to operate engine for a period of 30 minutes to complete a total of one hour and 15 minutes.
NOTE
Do not exceed 15 minutes per each stall check.
7. It is not necessary to change oil after above run-in schedule. The same oil may be used until next regular
change period.
Priming Lubricating System
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WARNING
Diesel engine must not be rotated when priming with oil, otherwise they are likely to start
running. Failure to follow these instructions may result in injury to personnel or damage to
equipment.
CAUTION
Failure to prime engine will cause damage to engine components.
When assembling overhauled engine, it is necessary to thoroughly lubricate running parts with engine oil to assure
lubrication when engine is started. To make certain that complete initial lubrication is available, engine lubricating
system should be pressure primed or charged with oil using Oil Leak Detector SE-1632. New or overhauled
engines that have been in storage over an extended period should also be primed in a similar manner.
When priming procedure is used, make certain that oil level is correct before the engine is put into service.
END OF TASK
END OF WORK PACKAGE
0088-10
