Welcome to Carver Yachts Owners Forum
We are a boating forum for owners of Carver Yachts to enthusiastically discuss all aspects of Carver Boat ownership. Whether you are looking for your first Carver or currently own one, you are sure to feel at home on CarverYachtOwners.com
You are currently viewing our board as a guest which gives you limited access to view most discussions, articles and access our other FREE features. By joining our free community you will have access to searching the forum topics, post topics, communicate privately with other members (PM), respond to polls, upload your own photos and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
Water in the tranny
- denpooch
- Commander
- Posts: 379
- Joined: April 9th, 2017, 8:03 pm
- Vessel Info: 2005 360 Mariner
Crusader 6.0 Captains Choice - Location: Long Island
- Has thanked: 82 times
- Been thanked: 86 times
Water in the tranny
The transmission oil cooler failed and I have a tranny that has to be replaced.
I had come back from a 2 hr cruise and checked the oil levels on the transmissions. The port side required 1/2 quart while the starboard read empty. I checked again and did not get a read so I tried adding fluid. As I was adding, the fluid was finding its way to the bilge and I knew something unfortunate was going on. My mechanic came down and determined that the fluid was not leaking out but rather the tranny was filled with water and the fluid had no where to go. Per the area marine transmission specialist, I pumped out the water, filled to top with fluid and flushed 2x going into forward and reverse. It seemed to be working and thought that I dodged a bullet.
I took her out for a run in order to change the fluid yet again but after about 20 minutes, it quit.
How does one avoid this mess in the future? Do any of you folks preemptively change the oil coolers for both transmissions and engines? I owned my last boat for 19 years, never changed the coolers and never had an issue.
All I know is that the lousy $140.00 oil cooler is gonna cost me about 5K!
I would be interested in knowing how you guys approach this.
Thanks.
- km1125
- Admiral
- Posts: 3342
- Joined: February 28th, 2017, 6:04 pm
- Has thanked: 57 times
- Been thanked: 968 times
Re: Water in the tranny
denpooch wrote:Source of the post
I pumped out the water, filled to top with fluid and flushed 2x going into forward and reverse. It seemed to be working and thought that I dodged a bullet.
I took her out for a run in order to change the fluid yet again but after about 20 minutes, it quit.
Sorry to hear that, but I'm confused about what happened when "it quit". Did the tranny stop shifting? stop going into fwd or rev? lock up?
- denpooch
- Commander
- Posts: 379
- Joined: April 9th, 2017, 8:03 pm
- Vessel Info: 2005 360 Mariner
Crusader 6.0 Captains Choice - Location: Long Island
- Has thanked: 82 times
- Been thanked: 86 times
Re: Water in the tranny
BTW, the tranny guy said that once contaminated I would have to pull the tranny. He knew... I was hopeful.
- bud37
- Admiral
- Posts: 4677
- Joined: April 23rd, 2015, 10:22 pm
- Has thanked: 547 times
- Been thanked: 1143 times
Re: Water in the tranny
Before you went back out did you change out the cooler ?
- denpooch
- Commander
- Posts: 379
- Joined: April 9th, 2017, 8:03 pm
- Vessel Info: 2005 360 Mariner
Crusader 6.0 Captains Choice - Location: Long Island
- Has thanked: 82 times
- Been thanked: 86 times
Re: Water in the tranny
Yes I did change the cooler, however, I did so after two 12 quart - idle at dock and change gear - flushes. I thought that I would be ok because it was working at the dock.
As we all seem to be subject to this problem, does anyone have suggestions on how to best avoid this from happening to any of us? One thought is to check tranny fluid after each use.... but even that will be after the fact.
Thanks.
- bud37
- Admiral
- Posts: 4677
- Joined: April 23rd, 2015, 10:22 pm
- Has thanked: 547 times
- Been thanked: 1143 times
Re: Water in the tranny
Now after some thought perhaps one of the contributing factors could be an actual restriction ( buildup ) in the cooler causing the raw water pressure to be somewhat higher than normal there by overcoming the trans oil pressure....how did the inside of yours look, could you see how it failed ??..that seemed to be lot of water .
It really does seem to be a design problem. I have the same set up.
- denpooch
- Commander
- Posts: 379
- Joined: April 9th, 2017, 8:03 pm
- Vessel Info: 2005 360 Mariner
Crusader 6.0 Captains Choice - Location: Long Island
- Has thanked: 82 times
- Been thanked: 86 times
Re: Water in the tranny
I think that the oil cooler and fluid pump in some ways work independently. Check out page 60 of this manual; http://www.crusaderengines.com/wp-conte ... 510018.pdf
The transmission pumps the fluid 'into - out of' the cooler while the engine impeller draws the raw water through the transmission oil cooler. (there is also the gas cooler and engine oil cooler in series) It is easy to imagine that if there is rot in the fluid tubes or some catastrophic failure within the exchanger, the tranny circulation pump will draw raw water into the transmission. The loop will then send the fluid into raw water side of exchanger and out the exhaust.
I may be wrong but that's how it looks to me.
In speaking with Carver, this seems to be a standard design formula.
-
- CYO Supporter
- Posts: 5803
- Joined: July 10th, 2015, 9:58 pm
- Vessel Info: 1989 Carver 3807 Aft Cabin
- Location: Ontario, Canada
- Has thanked: 431 times
- Been thanked: 1586 times
Re: Water in the tranny
The way to avoid this is to treat it with the same mindset as the engine coolant heat exchanger; in a salt water application, after 5-7 years, you're running on borrowed time, so replace before major damage occurs. Oil coolers are no different.
- denpooch
- Commander
- Posts: 379
- Joined: April 9th, 2017, 8:03 pm
- Vessel Info: 2005 360 Mariner
Crusader 6.0 Captains Choice - Location: Long Island
- Has thanked: 82 times
- Been thanked: 86 times
Re: Water in the tranny
As a matter of clarification in earlier posts when I was speaking about flushing the engines, I did bypass the oil cooler by creating a loop outflow to inflow on the transmission fluid line. After the two flushes in this fashion I replaced the oil cooler.
Thanks to all for the conversation.
- bud37
- Admiral
- Posts: 4677
- Joined: April 23rd, 2015, 10:22 pm
- Has thanked: 547 times
- Been thanked: 1143 times
Re: Water in the tranny
denpooch wrote:Source of the post I couldn't tell from looking into the end of it.
I think that the oil cooler and fluid pump in some ways work independently. Check out page 60 of this manual; http://www.crusaderengines.com/wp-conte ... 510018.pdf
The transmission pumps the fluid 'into - out of' the cooler while the engine impeller draws the raw water through the transmission oil cooler. (there is also the gas cooler and engine oil cooler in series) It is easy to imagine that if there is rot in the fluid tubes or some catastrophic failure within the exchanger, the tranny circulation pump will draw raw water into the transmission. The loop will then send the fluid into raw water side of exchanger and out the exhaust.
I may be wrong but that's how it looks to me.
In speaking with Carver, this seems to be a standard design formula.
Just for my clarification....do you not have the trans v- drive assembly pictured on page 58, that would be the same as mine.....in any case good luck with your trans change , hope they do a good job for you.
Return to “Gas Engines/Transmissions”
Who is online
Users browsing this forum: No registered users and 18 guests