22R
08-06-2023, 08:45 AM
My year 2000ish Sportmaster LU stuck an object (felt like a slight bump) I was doing about 45mph. When I put it back on the trailer i noticed a slight chunk missing on the skeg.
522232
522233
After home and starting to wash boat I was horrified to see the lower unit was coming off the mid section.
522234
After removing prop and Ally Foil I found that the mid section rear studs had backed out and was loose. The front nuts was loosening as well but those studs are still tight in the lower unit.
The studs will go back into the mid but seems loose till they get all the way in and then they are solid. I am afraid the threads was damaged by the lossing but not sure if I should do anything besides eiher red loctiting them in or maybe JB weld on the threads ??? Heli Coil ?
522235
522236
Now as to how his happened. My first thought was the strike but I cannot see that lil bit of skeg damage causing the studs to back out ???
However, in early May I slung an entire blade on my Hoss 28 HD and had to idle back about 4 miles and the engine vibrated badly so I am thinking that is what started the studs loosening?
So 2 questions to you S&F gurus.
1. What should I do if anything to he studs ?
2. on the skeg, should I just grind off the nick and change the sweep of the skeg slightly ? I hate to weld on the lower as it has never been damaged.
any advice appreciated
22R
522232
522233
After home and starting to wash boat I was horrified to see the lower unit was coming off the mid section.
522234
After removing prop and Ally Foil I found that the mid section rear studs had backed out and was loose. The front nuts was loosening as well but those studs are still tight in the lower unit.
The studs will go back into the mid but seems loose till they get all the way in and then they are solid. I am afraid the threads was damaged by the lossing but not sure if I should do anything besides eiher red loctiting them in or maybe JB weld on the threads ??? Heli Coil ?
522235
522236
Now as to how his happened. My first thought was the strike but I cannot see that lil bit of skeg damage causing the studs to back out ???
However, in early May I slung an entire blade on my Hoss 28 HD and had to idle back about 4 miles and the engine vibrated badly so I am thinking that is what started the studs loosening?
So 2 questions to you S&F gurus.
1. What should I do if anything to he studs ?
2. on the skeg, should I just grind off the nick and change the sweep of the skeg slightly ? I hate to weld on the lower as it has never been damaged.
any advice appreciated
22R