Pitot Pulsation Dampers
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=35362
Printed Date: November-17-2024 at 7:37am
Topic: Pitot Pulsation Dampers
Posted By: akora12
Subject: Pitot Pulsation Dampers
Date Posted: February-05-2015 at 1:00pm
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Does anyone know if these go bad, and if so, how to test them? I purchased my boat with one non-working speedo and have traced the problem to the lines and/or pulsation dampers with compressed air. Both speedo's were recently rebuilt and the pitots are free and clear. While I have everything ripped apart, I'd like to ensure the pulsation dampers are working as well. Thanks! ------------- '86 Silver Nautique 2001 |
Replies:
Posted By: phatsat67
Date Posted: February-05-2015 at 1:06pm
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I have seen the tops and bottoms become delaminated from the tube. They basically only need to let air pass thru. If you use lots of pressure it is possible to blow the tops off of them. I have considered farming out a company to make an aluminum replacement or even plastic but I haven't done much research. It's possible sediment has accumulated inside over the years and hardened over most likely the outlet hole. ------------- |
Posted By: akora12
Date Posted: February-05-2015 at 1:10pm
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Thanks, Zach. I'll check the inlets and outlets once I have them pulled. I know they're physically intact on the outside. Do you know if there's baffling or something on the inside that can gum up? I tested the lines with low psi and it was still evident that the left side was losing air between the gauge and pitot. ------------- '86 Silver Nautique 2001 |
Posted By: 8122pbrainard
Date Posted: February-05-2015 at 1:10pm
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Ryan, If they don't leak, they are good. As Zach mentioned, do not exceed 30 PSI. When they do get damaged, the common cause is from freezing when the pitots get plugged and water stays in the dampener. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: akora12
Date Posted: February-05-2015 at 1:14pm
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^ Great, I'll air test them separately from the hoses and go from there! ------------- '86 Silver Nautique 2001 |
Posted By: Air206
Date Posted: February-05-2015 at 2:32pm
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I think I have 1 or 2 if you need a replacement......... ------------- https://tinyurl.com/y6t5e3bu" rel="nofollow - 04 Air206 http://tinyurl.com/9urzgls" rel="nofollow - 91 Barefoot 78 SkiTiq |
Posted By: akora12
Date Posted: February-05-2015 at 2:53pm
PM'd ------------- '86 Silver Nautique 2001 |
Air206 wrote:Posted By: DrCC
Date Posted: February-05-2015 at 3:19pm
| There are no baffles inside. Just a plain hollow brass tube. |
Posted By: akora12
Date Posted: February-05-2015 at 4:22pm
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^ Good to know. It's hard to imagine that a hollow tube would do much of anything, but I guess a larger volume of air in the line helps to slow down the transfer a bit. ------------- '86 Silver Nautique 2001 |
Posted By: 8122pbrainard
Date Posted: February-05-2015 at 5:23pm
Have you ever see a big tank under a air compressor? Besides storing the air, it also stops pressure pulsations from every stroke of the air compressors piston. How about a pulsation dampener on a hydraulic system. Same principle! BTW, if you do find a leak, solder it up. Many including myself have done it. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: akora12
Date Posted: February-06-2015 at 12:19am
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^ Good call, Pete! Fortunately, I just got the dampers pulled tonight and there were no leaks at 20 psi. Once I got them wiped down, they basically looked new! Thanks everyone! ------------- '86 Silver Nautique 2001 |