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Step retract boot patch?


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Hi everyone,

The step retract servo boot on our C has a leak.  It stops retracting with about 8" left.   I've got one spare.   Before I replace the boot, I wonder if there might be a way to patch it to get some more life out of it. Access is great, this little tear is about 1/2" long on the downward facing side of the servo.   Anyone ever do this?

I can see that changing the material properties by applying a patch might create problems/stresses elsewhere on the membrane, which suggests a thin patch. It also must be a thin patch because it must roll around and not hang up as the membrane changes orientation during retract/extension.  Any ideas, or should I just bite the bullet and replace it?  In 2021 is there a really cool way to patch this so that we might get a few more years of life out of it?

I know about the excellent electric conversion, but I don't want to do that now.   I'm fully committed to the Brittain system and my vacuum pump is brand new.

 

boot_slit.jpg

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40 minutes ago, hammdo said:

Liquid tape maybe? I have one of those boots etc after my electric step...

-Don

Looked at a video on youtube this evening of a guy who experimented with fixing bicycle tubes with "flex tape"!!!    Meh.  

Thanks Don.  I'll keep your extra retract boot in mind.  I'll follow up with a possible solution if I find one.

Fred

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Acquired tire-patch kit from Wally-World for $4.00.   Figured there was enough gap between the cans for a thin patch from the kit to make the turn.  Scraped, slathered, pressed and waited 30 minutes.  Viola.  Fully retracting step.  How long will it last??? That's the question.

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Had the same problem 4 years ago when I bought my M20C.  Someone disconnected and plugged the vacuum line and tied the step in the up position. Searched around looking for a way to patch 2 small holes in the boot.  Finally went to Lowe’s and purchased a 3 oz tube of “Loctite PL Marine Fast Cure Adhesive Sealant”. This sealant is nice and flexible with a 24 hour cure time.  Only used a small amount on and around each hole.  My step has been working flawless for the past 4 years.  Highly recommend it.  

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