I was in the process of changing out my water pump impeller when I found that my aluminum alternator bracket that secures the base of the alternator to the engine (Universal Part # 200436) was broken. The aft ear that bolts to the engine was broken off. Not sure how long ago this happened, but the alternator was still secured at the top to the other bracket that is uses to adjust belt tension and the belt was still reasonably tight as the alternator base was still resting and pushing up against the engine where the base bracket attaches to the engine.
I upgraded to a 90 Amp Leece-Neville alternator about 6 years ago, so the weight of the alternator is greater than the original. I read the posts about making sure that you have the correct bolts used in the bracket (English vs. metric) but that was not the cause of this problem.
I have always thought my engine noise and engine vibration (which causes boat vibration and then more noise) was excessive, and am concerned that engine vibration is the main contributor of this problem.
Has anyone else broken this aluminum bracket? And, if so, did you find a cause and a potential solution to prevent this from happening again. Having this happen in the middle of Lake Michigan would have been a major problem for me.
Thanks for any info or suggestions.
2004 C-36 MKII #2199
Tall Rig, Wing Keel, M-35B
S/V Valkyrie - Sail Great Lakes