Propeller Shaft Grooves

It is an issue that Gori propellers installed on a SD20 saildrive will form grooves over time which will result in sea water penetration. Periodic repositioning of the seals using shims (P/N 196315-02880 Circlip, Needle 52) allow longer life from the propeller shafts.

Methods to deal with groves on the propeller shaft:

1. Add/Re-position spacers between the seals
2. Machine propeller shaft and add a 316SS sleeve to return to original size
3. Replace propeller shaft

Notes:

1. Propeller shaft diameter: 35mm (where the seals ride)
2. Propeller shaft material: Likely 17-4 ph
3. Speedi Sleeve: The 99139 SKF for a 35.00mm/1.375" shaft has been installed over the propeller shafts by others - this is a bad idea. The Speedi Sleeve is not rated for continuous salt water immersion so it is not recommended.

Grooves worn into the propeller shafts

Refurbished propeller shaft after machining and adding SS sleeve