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B75 Installation

Old 11-19-2016, 09:03 AM
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Default B75 Installation

I just attempted to install the B75M, and unfortunately, it did not go well. The 4200 began drying on the bottom threads of the transducer before I could get the nut tightened down, so I had to back it off, but there was 4200 all over the threads. I've spent the last hour cleaning as much 4200 off the threads (using acetone) as I can, so I can reinstall. Unfortunately, even though I had the face of the transducer masked off with 3M painters masking tape, some acetone probably got on the tape from the towel I was using and probably contacted the transducer head.

How big of an issue is this? Obviously, I would hate to install the transducer only to find out it doesn't work properly.
Old 11-19-2016, 09:23 AM
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You'll be ok. acetone can break down the plastic face of the transducer over time, but I doubt this incidental contact is going to do any damage. Acetone is unstable and evaporates off quickly. The elements themselves are potted in the plastic so its not like you could have damaged something sensitive. Try using a wire brush to help get the 4200 off. Don't worry, the transducer isn't that fragile.
Old 11-19-2016, 09:36 AM
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You couldn't keep tightening it even though it was drying? How long was it sitting for? Usually take a good amount of time to sure completely. When I did my install I tightened it down almost as far as it would go. The next day I came back and gave it almost a half to full turn more. maybe could have gone even tighter if I really put the screws to it.

As far as the acetone it goes away fast, I'm sure you are fine.
Old 11-19-2016, 10:13 AM
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Originally Posted by Stickbo View Post
You couldn't keep tightening it even though it was drying? How long was it sitting for? Usually take a good amount of time to sure completely. When I did my install I tightened it down almost as far as it would go. The next day I came back and gave it almost a half to full turn more. maybe could have gone even tighter if I really put the screws to it.

As far as the acetone it goes away fast, I'm sure you are fine.
Thanks for the advice, everyone.

When I put the 4200 below the washer inside the bilge, apparently the transducer had slipped down maybe 1/2'' and I got 4200 on threads that were a little high. I was having a difficult time screwing it down by hand (and there's not much room in the bilge to wrench it down) and eventually it became impossible so I put a little acetone on a rag and I was able to back it off.
Old 11-19-2016, 01:57 PM
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Originally Posted by AFBoggy View Post
Thanks for the advice, everyone.

When I put the 4200 below the washer inside the bilge, apparently the transducer had slipped down maybe 1/2'' and I got 4200 on threads that were a little high. I was having a difficult time screwing it down by hand (and there's not much room in the bilge to wrench it down) and eventually it became impossible so I put a little acetone on a rag and I was able to back it off.
Yeah not the easiest area to get to. I used a small channel lock filter wrench to get in the area.

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