Transmission Whine at High Speed
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=14955
Printed Date: November-17-2024 at 10:35pm
Topic: Transmission Whine at High Speed
Posted By: Tadpole
Subject: Transmission Whine at High Speed
Date Posted: August-17-2009 at 3:29pm
I have a transmission or engine whine at high speeds, say 30 mph. My shaft seems to be properly aligned and packed properly. I do notice that my transmission fluid could be a little low. Do I have to worry about over-filling the transmission.
Thank you,
Joe Harris
1993 Ski Nautique
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1993 Ski Nautique
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Replies:
Posted By: Luchog
Date Posted: August-17-2009 at 10:03pm
how many hours on that tranny? I think those "early" PCM were whiners
There's a fix for it though, wait until Eric chimes in.
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http://www.correctcraftfan.com/diaries/details.asp?ID=2095" rel="nofollow - 1980 Ski Nautique
Commander 351W
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Posted By: SNobsessed
Date Posted: August-17-2009 at 10:06pm
Mine does same thing. Moderate overfilling is not so bad - way better than having it low. I stay under 30 mph except for the thrill moments, so the gear whine is not a problem for me.
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin
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Posted By: 8122pbrainard
Date Posted: August-17-2009 at 10:22pm
Tad,
If the noise is more of a "buzz/whine" then yes there is a fix. It involves installing a short length of hydraulic hose onto one of the fittings on the trans. It acts like a pulsation dampener. Somewhere there is a thread on it as well as a picture of the hose. I'll go looking for it but I'm sure someone will be along shortly with more details.
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/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
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Posted By: eric lavine
Date Posted: August-18-2009 at 10:20am
Band-aid Pete, not a fix. there are late style valves that cure the valve buzz problem, but not worth the money they want. they do install a rubber line parrallel into the charge circuit to dampen the buzz, he probably is experiencing straight cut "spur gear" whine from the reverse planetaries which will spin under no load in forward
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"the things you own will start to own you"
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Posted By: Tadpole
Date Posted: August-18-2009 at 10:35am
Hey SNobsessed, I am originally from the Bloomfield, Iowa area. I grew up on a farm outside of Drakesville, until I joined the Navy in 1962 and never moved back. Thanks for your reply.
Joe
1993 Ski Nautique
351 HO
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1993 Ski Nautique
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Posted By: SNobsessed
Date Posted: August-18-2009 at 10:50am
Tad, never went to the service myself but my dad was a Navy pilot & my brother served on the Oriskeny (sp?). Hope your boat is running well; the hydraulic buzz I believe is a lower speed phenomena. I was talking about the hi speed gear noise. The PO of my boat had Eric replace the reduction gear set & it is stll noisy, I think it is th nature of the beast.
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin
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Posted By: eric lavine
Date Posted: August-18-2009 at 4:41pm
its the regulator valve pulsating off of its seat and it creates a buzz noise, get alot of calls with the whine and basically it is the nature of the beast..some do it some dont, once in a while i will find the output gears hard facing removed and down into the soft part of the gear. its hard to alleviate the noise because of the straight cut spur gears and the speed they travel
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"the things you own will start to own you"
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Posted By: akabulla
Date Posted: August-18-2009 at 6:47pm
I went through the same thing with my Excalibur with a 1:23 trans. I thought something was wrong with it at first because when in gear it whines. It is annoying but I sure know when the shaft is spinning. Apprently it is normal for these trans. Here is a video I found where I realized it is a typical noise. You will hear it around the 13-16 mark.
http://www.youtube.com/watch?v=MAO0iIiRgk8 - http://www.youtube.com/watch?v=MAO0iIiRgk8
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