Cruisers Forum

Join CruisersForum Today

Thread Tools Search this Thread Rate Thread Display Modes
Old 04-07-2014, 09:45   #1
Registered User

Join Date: Jul 2014
Posts: 1
Yanmar KM4A transmission cooler - needed in northern waters?

Hi all,

I'm new to the forum. I have a 1997 Beneteau 383 (Moorings version of Oceanis 381). The boat used to be in charter in the BVI, but it has been living in quiet retirement for a few years on Lake Ontario. Late last year, the transmission (Yanmar KM4A) started having trouble finding the forward gear. A mechanic friend checked and found water in the transmission oil. I changed the oil, which fixed the problem (fortunately), but it appears that the transmission oil cooler is corroded. My friend bypassed the cooler (looped a hose from water output to intake on the engine) for the time being, so I can still use the boat for day sails without getting water in the transmission. He is ordering a new transmission oil cooler, and will be replacing it when it comes.

My question is this: do the experts in the group think that the transmission oil cooler is necessary when using the boat in water that rarely gets above 23 degrees C / 73 degrees F? The boat was originally built for the tropics, where both the air and water temperatures were somewhat higher. I'm not so concerned about short runs, but if I have to motor for 6-12 hours, should I be concerned? (I plan to replace the cooler in any case, but am interested in hearing whether people think it's money well spent!)

Thanks in advance.

Chris Moore
Hamilton ON Canada
chrismoore58 is offline   Reply With Quote

transmission, water, yanmar

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Kanzaki km4a frigate Engines and Propulsion Systems 2 29-09-2011 19:18
Yanmar KM4A Oil Change duncan_ellison Propellers & Drive Systems 2 19-07-2011 17:44
Yanmar KM4A Transmission Cooling jannpage Propellers & Drive Systems 2 16-05-2010 01:11
Velvet Drive Transmission Cooler Hose? SkiprJohn Engines and Propulsion Systems 2 22-10-2009 23:04

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 22:23.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.