Complex sentence: In 1990 the Orenstein & Koppel 0-8-0 was moved to the shop for a heavy restoration, in 1997 it was temporarily de-superheated, and in 1998 was reflued by the Hesston shop crew.
Split into simpler sentences: In 1990 the Orenstein & Koppel 0-8-0 was moved to the shop for a heavy restoration. In 1997 it was temporarily de-superheated, and in 1998 was reflued by the Hesston shop crew.