Is Replacing the Engine Crankshaft Thrust Washer Considered a Major Overhaul?

[AsherAnn]

Replacing the engine crankshaft thrust washer is not considered a major overhaul. The repair only requires removing the oil pan for maintenance. However, for some vehicles, the oil pan cannot be easily removed while the engine is in the car, necessitating the engine to be lifted out for repair, which falls under a medium repair. A major engine overhaul typically includes replacing components such as valves, pistons, cylinder liners, or performing cylinder boring and crankshaft grinding. A major engine overhaul is primarily aimed at comprehensively addressing engine faults, replacing all oil seals, gaskets, cylinder head gaskets, crankshaft bearings, and connecting rod bearings on the engine assembly. Therefore, a major engine overhaul must ensure a one-time complete repair to avoid the numerous complications that could arise from a second disassembly.