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Old 11-06-2021, 15:48   #1
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cracks in hydraulic line casing

I noticed some cracking in the black outer layer of my Navtec boom vang hydraulic line. I think this is just a protective casing. Is there a good material that I could coat it with that would extend its life for another season? I was thinking something like liquid electrical tape, but I'm sure there's something better to use.
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Old 11-06-2021, 16:13   #2
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Re: cracks in hydraulic line casing

If you’re just looking for another season, wrap it in a spiral with a good quality electrical tape of your favorite color (black gets sticky in the sun though). The jacket is really just there to protect the inner layers from the sun.
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Old 11-06-2021, 16:21   #3
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Re: cracks in hydraulic line casing

Another season would be great, since I'm trying to leave the yard, I've been here too long. If there's something that would work longer term, that would be ideal, since as far as I can tell, there's nothing wrong with the system as it is now, so I'd rather not replace the hydraulic lines for something that can be fixed/remediated. Any ideas on UV stable flexible coatings that could be painted/brushed on? I don't care if it doesn't look perfect. Maybe plasti dip?
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Old 11-06-2021, 17:05   #4
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Re: cracks in hydraulic line casing

I’d wrap it with white electrical tape, then cover it with split wire loom held on with zip ties.

Nothing you “paint” on is going to last. And to be honest, replacing that hose isn’t hard or expensive. Use it until you’ve got a breather, then take it to a hydraulic shop and have a new one made.
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Old 11-06-2021, 17:17   #5
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Re: cracks in hydraulic line casing

Thanks, that sounds like a pretty decent idea.

It's not so much about the cost, but snaking the hose from the mast back to the cockpit where the pump/reservoir is.
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Old 12-06-2021, 03:16   #6
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Re: cracks in hydraulic line casing

Quote:
Originally Posted by Muaddib1116 View Post
Thanks, that sounds like a pretty decent idea.

It's not so much about the cost, but snaking the hose from the mast back to the cockpit where the pump/reservoir is.
If it breaks you will wish the hell you took the time to replace it...
get new hose made and a coupler, connect hoses together, use old hose to pull new hose through...
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Old 12-06-2021, 06:11   #7
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Re: cracks in hydraulic line casing

UV damage to the outer plastic, you can see the shiny stainless steel braid underneath.

I recommend you wrap it (incl fitting) tightly with silicone rescuetape, then add this sleeve (check for correct diaameter) around it (do the same with a brand new one)
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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Old 12-06-2021, 06:16   #8
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Re: cracks in hydraulic line casing

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Originally Posted by s/v Jedi View Post
UV damage to the outer plastic, you can see the shiny stainless steel braid underneath.

I recommend you wrap it (incl fitting) tightly with silicone rescuetape, then add this sleeve (check for correct diaameter) around it (do the same with a brand new one)
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Thanks, that looks like it's probably a little more permanent than electrical tape. I'll give it a look.
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Old 12-06-2021, 07:48   #9
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Re: cracks in hydraulic line casing

That cat in the ad is sure cute!!
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Old 12-06-2021, 07:57   #10
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Re: cracks in hydraulic line casing

Alternatively, consider self-amalgamating rubber tape

For example:

https://www.marineoutfitters.ca/mobi...oduct=62925376
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Old 12-06-2021, 08:14   #11
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Re: cracks in hydraulic line casing

Usually referred to as rigging tape. Electrical tape doesn't hold up as well.
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Old 12-06-2021, 08:21   #12
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Re: cracks in hydraulic line casing

Self amalgamating tape. That is the black tape that sort of moulds itself together. If you want a bit more protection, slice open a bit of hose and put that over the area first.
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Old 12-06-2021, 08:46   #13
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Re: cracks in hydraulic line casing

Ancor electrical heat shrink with adhesive protects against the UV degradation. Disconnect and slip it over the hose. I use it on my new hoses as well when exposed to chafe or sunlight.

48 inch tube 3/4" diameter black heavy wall ancor 326148
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Old 12-06-2021, 08:53   #14
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Re: cracks in hydraulic line casing

I imagine I would have to rebleed the lines if I do that?
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Old 12-06-2021, 09:02   #15
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Re: cracks in hydraulic line casing

Yes but as hydraulic fluid is hydroscopic, you should replace all your fluid on a regular basis to avoid problems with seals and corrosion. I do mine every few years and usually have been able to change fluid color so as to really know when I have exchanged the fluid. Never in 40 years have I had a hydraulic failure. Take it as a hint, most cars have a 3 year interval on brake fluid
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