Quote:
Originally Posted by FishStretcher
No, I am not familiar with the I/O at all. It was moored, and the I/O is older, the lower unit is almost new. He said a friend botched something in the install/adjustment of the previous lower unit/ prop, so he got a new one. I saw receipts for the work. I ran it, it shifted nicely, although I am used t outboard "dog clutch" shifting, so anything is quieter. When running with the steering wheel turned hard over there were no odd noises (I was told to listen for gimbal bearing growl).
I am not sure of the generation of Bravo 3 it is. It is old enough to be either generation- installed ~2004. I think it might be older?
I had a mechanic help with the de/re winterizing and running. But he knows the seller. My mechanic wasn't available.
I get the feeling that the install wasn't top notch first time out- it was pulled and redone once, early on. And maybe the Bravo 3 lower unit dissolved. I don't know. This will be a trailer queen for a year while I sort it out and make sure the zincs and mercathode is done right.
Your input is appreciated.
As for my wobble comment-
Standing behind the I/O with it at idle in gear, I could just see that the prop tips hat a bit of wobble. Not worse than my outboard when I do the same thing on the trailer. But I don't know Bravo 3 I/Os.
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"gimbal bearing growl" - that noise,if bad gimbal bearing,would be apparent at all times , when the wheel is hard over - on the steering stop,this is a test for u-joint noise...
there's a test for corrosion protection - all these units had mercathode systems...
there's a test for that system as well - a common problem is,the power is only available to the unit,with the battery switch in the "on" position - this unit needs to have constant power to function properly...
the early vintage bravo III had a corrosion problem,it was taken care of in the later model units - too much stainless,not enough zinc...
i would pull that drive to inspect the bellows and the shift area i explained previous - with the aluminum oxide i see,i would highly reccomend you do that - but,with you being a "Mechanical Engineer for boats and marine systems ",i would assume you would know that...