- If the main propeller shaft is dropped, replace the main propeller shaft assembly.
- Never tap the tube. Avoid impacts and scratching.
- If there are cracks, peeling, or any other breakage on the seal (yoke and tube joint) replace the main propeller shaft assembly.
- Check that there is clearance between the tube end and yoke flange. If no clearance is found, replace the main propeller shaft.
- Replace the propeller shaft assembly if there are cracks or deflection on the tube.
- Protect the main propeller shaft tube from damage with a tube protector during repair service.
- Always stop the engine before removing or installing the main propeller shaft assembly.