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Chafed fiberglass

Old 06-11-2019, 01:05 PM
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Default Chafed fiberglass

I'm new to THT so pardon me if I do something ideotic. I noticed that one of my tee top brackets was loose and upon further inspection the aluminum has worn a bit into the fiberglass.
I'm thinking of removing the bolts, cutting a piece of thin white plastic (flimsy bucket), sliding it between the bracket/fiberglass and install new bolts with lock-nuts.
Has anyone encountered this issue before? If so, how'd you fix it? Any thoughts on my solution?
Old 06-13-2019, 10:29 AM
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pics help.are you able to just tighten the bracket??
Old 06-14-2019, 08:08 PM
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Definitely need pics.
Old 07-15-2019, 01:13 PM
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I carried thru with my plan and after three trips offshore, I've had no more issues. Before the plastic barrier, when I would take a beating, a dark film would "wash" out from behind the bracket. I'm assuming this was the aluminum eroding away. Also, the inside of the fiberglass wasn't perfectly flat so there wasn't a washer on one bolt. The nut had eroded into the fiberglass and every time I tightened it, it just sunk further in. I finally got a washer on it and got it tight. I've tried to attach pictures but not sure if they're gonna come thru.
Old 07-15-2019, 01:18 PM
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and they didn't
Old 07-15-2019, 01:33 PM
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Apparently I have to have 10 posts before I can attach pictures? I wonder why.
Old 07-15-2019, 01:37 PM
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I'm still working on the pictures. I couldn't tighten one of the bolts because the lock nut had sunk into the inside of the fiberglass. I finally got the nut to loosen off and put on a washer. It shouldn't loosen up now. Questionable factory workmanship, was installed on a Monday or Friday.
Old 07-16-2019, 11:13 AM
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Have you checked the other brackets? What about the T-Top feet? Are those loose?
Typically when something starts moving it will loosen in multiple places before you see the movement.

Instead of a plastic shim I would recommend bedding it in 3M 4200. It's a non permanent adhesive which will help hold it still during vibrations. The plastic shim may act like a slider and allow more movement pulling the bolt through causing more fiberglass damage.
Old 07-16-2019, 02:00 PM
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I checked all the other fasteners on the t-top. They were okay...now tight. As for the 4200, I had to pry the bracket away from the fiberglass and just had enough space to slip the plastic in before I had to release. Not sure if I could have held the gap long enough to work the 4200 in the gap. Maybe if I had shimmed it with some wood blocks. Admittedly I'm a little impatient and the plastic was a quick buffer. If I have anymore problems I will definitely try the 4200 (great stuff by the way). Since I was able to get a washer behind the nut, I think I've solved the rapid loosening issue.

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