TM 5-3805-281-24-2
Engine Rebuild, Break-In, and Tune-Up
26. Perform engine break-in and normal standard
performance checks (See following).
RG,RG34710,1052
1923OCT972/2
ENGINE BREAK-IN GUIDELINES
Engine break-in should be performed after overhaul or
when the following repairs have been made:
Main bearings, rod bearings, crankshaft, or any
combination of these parts have been replaced.
Pistons, rings, or liners have been replaced.
Rear crankshaft oil seal and wear sleeve have been
replaced. (Primary objective is to see if oil seal still leaks).
Cylinder head has been removed. (Check and reset valve
clearance.)
Injection pump has been removed or critical adjustments
have been made while it is on the engine. (Primary
objective is to check power).
RG,RG34710,1053
1923OCT971/1