A repair station mechanic disassembles this engine and notes a broken bearing shell, number two “...from the rear saddle. It appears the bearing has worked—and is polished as result.” Fretting on the parting surfaces and a malformed bearing tang also provide evidence for a working bearing (P/N SA634503M010). (Great pictures!Next time, if possible, please “flesh-out” a few more details: TSO, TT, Part Times, operating conditions andearnest speculation—they all provide insight and education. Thanks—Ed.).

Part Total Times: (not provided).