TwoRivers
Petty Officer 1st Class
- Joined
- Mar 10, 2010
- Messages
- 344
Hello all. I've been doing some maintenance on my 1989 Johnson 70 hp. While trying to remove the lower unit for a water pump upgrade one of the bolts broke off. It's one of the bolts toward the middle of the lower unit. I was able to remove the bolt up inside of the anode cavity and the two bolts toward the front of the lower unit.
The remaining middle bolt won't let go and it seems likely to break as well. I really tried to be patient with the broken bolt. I sprayed it with penetrating liquid, let it set, sprayed again, let it set. Loosened a little , tightened a little. Added some blue flame, loosened, tightened, loosened. Then it broke.
I don't think I can be any more patient?
Question, should I just break the other bolt off and deal with the eventual consequences or does somebody have a method for removing these soft stainless bolts from the aluminum housing?
Also, what are the consequences of breaking the bolts? How am I going to get the broken bolts out?
thanks in advance.
rob
The remaining middle bolt won't let go and it seems likely to break as well. I really tried to be patient with the broken bolt. I sprayed it with penetrating liquid, let it set, sprayed again, let it set. Loosened a little , tightened a little. Added some blue flame, loosened, tightened, loosened. Then it broke.
I don't think I can be any more patient?
Question, should I just break the other bolt off and deal with the eventual consequences or does somebody have a method for removing these soft stainless bolts from the aluminum housing?
Also, what are the consequences of breaking the bolts? How am I going to get the broken bolts out?
thanks in advance.
rob