Saildrives: Difference between revisions
Created page with "Manufacturer: Yanmar<br> Description: Saildrive Unit<br> Model: SD20<br> Manual: thumb|Link <br><br> Parts catalog: thumb|Link <br><br> O-Ring parts diagram: thumb|Link <br><br> Service Bulletin - Taper pin: thumb|Link <br><br>" |
No edit summary |
||
| (8 intermediate revisions by the same user not shown) | |||
| Line 2: | Line 2: | ||
Description: Saildrive Unit<br> | Description: Saildrive Unit<br> | ||
Model: SD20<br> | Model: SD20<br> | ||
Manual: [[File:SD20 Operations Manual 2009.pdf|thumb|Link]] | Manual: [[File:SD20 Operations Manual 2009.pdf|thumb|Link]] <br> | ||
Parts catalog: [[File:SD20 Part Catalog.pdf|thumb|Link]] | Parts catalog: [[File:SD20 Part Catalog.pdf|thumb|Link]] <br> | ||
O-Ring parts diagram: [[File:SD20 O-rings Parts Diagram .pdf|thumb|Link]] | O-Ring parts diagram: [[File:SD20 O-rings Parts Diagram .pdf|thumb|Link]] <br> | ||
Service Bulletin - Taper pin: [[File:SD20 Taper Pin Bulletin.pdf|thumb|Link]] <br><br> | Service Bulletin - Taper pin: [[File:SD20 Taper Pin Bulletin.pdf|thumb|Link]] <br><br> | ||
'''Notes:'''<br> | |||
''Blown seals:'' The SD20 is susceptible to blowing the seals if the oil is filled too high. Many have added a vent line to the top of the filler cap. Without the vent, only fill the saildrive oil to the bottom of the dipstick<br> | |||
''Sheared tapper pin repair:'' [https://www.strikhedonia.com/anchoring-with-no-starboard-engine-in-a-crowded-anchorage/ External Link]<br> | |||
''Oil specifications:'' 80W90W gear oil (API GL-4 or GL-5)<br> | |||
''Oil capacity:'' 700ml<br> | |||
''Oil change interval:'' Every 250 hours of operation or annually (whichever comes first)<br> | |||
''Procedure to change oil in the water:''<br> | |||
# Using a pump with a small tube remove as much oil as possible<br> | |||
# Refill oil to full capacity (bottom of dipstick) | |||
# Run engine 5 minutes<br> | |||
# Using a pump with a small tube remove as much oil as possible<br> | |||
# Refill oil to full capacity (bottom of dipstick)<br> | |||
:(This will replace over 75% of the oil)<br><br> | |||
Outer diaphragm and secondary inner diaphragm<br> | |||
''Replacement Guidelines:'' Inspect every 2 year and replace every 5 years<br> | |||
''Common Practice:'' Monitor condition and test the water penetration sensor<br> | |||
''Recommendations:'' Pacwest in San Diego does not recommend changing the diaphragms unless there is visible damage or water has penetrated the outer diaphragm. These diaphragm almost never fail. I have read this from other sources who make the same recommendation. | |||
Propeller Shaft Grooves<br> | |||
It is an issue that they 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 allow longer life from the propeller shafts.<br> | |||
[[File:Propeller Shaft Seal Grooves.jpg|thumb|Grooves worn into the propeller shafts]]<br> | |||
Latest revision as of 11:11, 9 May 2026
Manufacturer: Yanmar
Description: Saildrive Unit
Model: SD20
Manual: File:SD20 Operations Manual 2009.pdf
Parts catalog: File:SD20 Part Catalog.pdf
O-Ring parts diagram: File:SD20 O-rings Parts Diagram .pdf
Service Bulletin - Taper pin: File:SD20 Taper Pin Bulletin.pdf
Notes:
Blown seals: The SD20 is susceptible to blowing the seals if the oil is filled too high. Many have added a vent line to the top of the filler cap. Without the vent, only fill the saildrive oil to the bottom of the dipstick
Sheared tapper pin repair: External Link
Oil specifications: 80W90W gear oil (API GL-4 or GL-5)
Oil capacity: 700ml
Oil change interval: Every 250 hours of operation or annually (whichever comes first)
Procedure to change oil in the water:
- Using a pump with a small tube remove as much oil as possible
- Refill oil to full capacity (bottom of dipstick)
- Run engine 5 minutes
- Using a pump with a small tube remove as much oil as possible
- Refill oil to full capacity (bottom of dipstick)
- (This will replace over 75% of the oil)
Outer diaphragm and secondary inner diaphragm
Replacement Guidelines: Inspect every 2 year and replace every 5 years
Common Practice: Monitor condition and test the water penetration sensor
Recommendations: Pacwest in San Diego does not recommend changing the diaphragms unless there is visible damage or water has penetrated the outer diaphragm. These diaphragm almost never fail. I have read this from other sources who make the same recommendation.
Propeller Shaft Grooves
It is an issue that they 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 allow longer life from the propeller shafts.
