Cruisers Forum

  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
Thread Tools Search this Thread Rate Thread Display Modes
Old 30-09-2008, 15:42   #1
Registered User

Join Date: Mar 2008
Location: The Sea
Boat: Coronado 30 - Lady Eliza
Posts: 241
Images: 11
Yanmar 2qm15 zinc anodes

I am attempting to inspect/replace the zinc anodes in my Yanmar. I am using the Yanmar Service Manual for the motor that some god-send linked to me in another thread. Not the owner's manual- but the service manual. Lots of good diagrams and whatever else.

Anyway, I started to remove one and began to second guess my interpretation of the diagram from the manual. The thing was torqued on like an angry titan installed it last. The entire assembly came loose before the nut broke. Had I been standing on the dock instead of the cabin sole I think I could have rolled the boat over. Then I noticed on the grease and crud a red sticker. It read "zinc inside" so I felt pretty sure this was, in fact, the right thing.

I scraped it off, saturated it with WD40, resaturated, etc... It still doesn't want to budge. The one in the back seems to be on with similar levels of never-****ing-let-go.

Any suggestions? I might be able to get a breaker-bar onto the front one- although this is the one that the assembly wants to spin... But I don't think I can do anything to increase the torque on the back one...
"It is never too late to be who you might have been." -George Eliot
Jack Long is offline   Reply With Quote
Old 30-09-2008, 20:00   #2
Registered User

Join Date: Mar 2007
Location: New Orleans
Boat: Gulfstar 37 - Perseverence
Posts: 66
For metal objects corroded together, the time-honored system is penetrant - something better than wd-40, like PB Blaster or such, heat, and tapping with a small hammer. the repeated cycles of penetrant, tapping, and heating and cooling expansion usually will break things loose. Patience is a virtue..
jlogan is offline   Reply With Quote
Old 01-10-2008, 05:52   #3
Registered User

Join Date: Dec 2007
Location: North Wisconsin
Boat: Liberty 28 Custom Cutter - "Native Dancer" For Sale
Posts: 209
I got exactly the same thing on a 26 year old Westerbeke w21. It's been in freshwater it's entire lifetime, but that zinc is "welded" into the heat exchanger. At least I've got room to work on it, but I know that if I get too aggressive, that darn bolt head is going to torque right off the bolt.

Gawd I love working on boats. So much to do with so little space!!!!!!!!!!!!!!!!!!

Good luck to both of us!!
Liberty28 is offline   Reply With Quote

2qm15, 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
Removing oil from a Yanmar 2QM15 Jack Long Engines and Propulsion Systems 14 08-12-2018 13:38
Where the Heck Does the Yanmar Internal Zinc for the Saildrive Go? schoonerdog Engines and Propulsion Systems 17 15-07-2017 11:28
Yanmar 2qm15 alternator upgrade Jack Long Electrical: Batteries, Generators & Solar 26 31-12-2012 23:13
Yanmar 2QM15 woes SailboatJimmy Engines and Propulsion Systems 11 18-07-2008 18:08
fuel injection problem Yanmar 2QM15 Bryanaw40 Engines and Propulsion Systems 5 30-07-2005 00:32

Advertise Here

All times are GMT -7. The time now is 03:12.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.