Is the disassembly of an engine module considered to be a major or minor repair?

• A. Major
• B. Minor
• C. Cosmetic
• D. Routine

Answer: (A)

Disassembly of an engine module is a major repair because it involves taking apart a major portion of the engine to inspect internal components for wear, damage, or deviations, and then reassembling it with precise clearances and torque requirements. This level of teardown and reassembly goes beyond routine maintenance or cosmetic work and typically requires specialized procedures, tools, and potential component replacement. Minor repairs are reserved for tasks that don’t require opening up a module, while routine maintenance covers scheduled checks and minor adjustments. So the disassembly itself falls into the major repair category.