HeatherAlyssa
Senior Member
- Joined
- Mar 11, 2017
- Messages
- 217
- Location
- United States
- Vessel Name
- Heather Alyssa
- Vessel Make
- Mainship 350/390
Hello Trawler friends!
This week is “Clean Heat Exchanger Week”. I have 5 heat exchangers on my Yanmar 6LP-STE. Air, Lube Oil, Transmission Fluid, Fuel, and Fresh Water cooler. Each one has at least one pencil zinc installed. I took off all end caps last year, cleaned the heat exchangers and replaced all zincs. This year I decided I was going to clean them again. In the process, I noticed that several of the zincs had unscrewed from the plug (As I had also noticed last year), and the zinc was just laying on the bottom of the heat exchanger.
I know for a fact a pencil zinc will break if it is over torqued in the plug.
So now my questions:
-Is this common?
-Can I buy pencil zincs that are not screwed in but are somehow permanently secured to the plug?
-What can I do to prevent this? Thread lock?
Thank you.
Alex
This week is “Clean Heat Exchanger Week”. I have 5 heat exchangers on my Yanmar 6LP-STE. Air, Lube Oil, Transmission Fluid, Fuel, and Fresh Water cooler. Each one has at least one pencil zinc installed. I took off all end caps last year, cleaned the heat exchangers and replaced all zincs. This year I decided I was going to clean them again. In the process, I noticed that several of the zincs had unscrewed from the plug (As I had also noticed last year), and the zinc was just laying on the bottom of the heat exchanger.
I know for a fact a pencil zinc will break if it is over torqued in the plug.
So now my questions:
-Is this common?
-Can I buy pencil zincs that are not screwed in but are somehow permanently secured to the plug?
-What can I do to prevent this? Thread lock?
Thank you.
Alex