How to change heat exchanger zinc and broken zinc extraction
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- čas přidán 8. 07. 2024
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A standard heat exchanger zinc change, but with a broken zinc removal twist. The usual zinc change is common to nearly all heat exchanger zincs, but the broken zinc removal is an extra that is not often seen. Most of the time this does not happen, but should you need to know how to do it - here it is in color.
Thanks - such a great instructional video- explains exactly the problem I was facing and I can now go back to my own boat engine with a clear idea of what needs to be done.
I've never been more relaxed learning how to maintain my new sailboat then listening to this sailing Sean Connery type fellow
Excellent! I just bought a boat with a westerbeke 46 and never considered a zinc in the heat exchanger. I don't know what I don't know. This is very helpful!
What a great video! Excellent presenter - obviously very wise, but modest. I just bought a boat and believe I have this same issue. Thank you much!
Thank you, let us know if we can help
A little trick on changing the zinc which can help to not break what’s left of the pencil. Instead of immediately loosening the zinc try and snug it up a fraction, then back it out normally. Helps a lot.
Was doing a quick search since I had a stuck Zinc in my Kohler Generator and came across your video. On mine the ends of the heat exchanger don't come off so I needed a way to get it from the zinc mounting hole. Your video was perfect. Drilled it with a small bit, screwed in at wood screw and pulled out a big chunk. The rest came out with less than 5 minutes of cleaning with the screw. Saved me from pulling the heat exchanger.
It makes me smile to see that we could help make your project smoother. Well done! Your generator is on a boat?
Thanks for this. We enjoyed your presentation and love the humour!
Awesome and useful video. Love that everything didn't go as expected since that's the normal experience :)
Just exactly what I have! Thank you!
Thank you so much for this! While I have a Carver with 454 Crusaders I was able to take your excellent advice and remove the old anodes. Mine were lateral so I used a shop vac to suck the remaining debris out.
Life Saver!! Replacing today on a Catalina 30 and ran into a broken zinc. Cheers mate! Keep up the videos
Universal M3-20 Diesel Motor
Pleasure, enjoy your boat!
So darn helpful. Thank you for this video!
I’ve always serviced the heat exchanger at same time. Remove end caps. Rod it with bamboo shishcabob sticks. Easy on tubes. Remove any anode Remnants replace anodes and end caps. Clean water strainer. Check pump impeller. Check antisiphone Run engine and comfirm flow and engine temperature I double check temperature with infrared thermometer cuss the engine senders go bad.
Wouldn’t it be easier to remove the end cap to remove all the pieces that way your sure you cleaned it out?
For newbies I do not recommend removing the cap as it opens the whole new can of worms. But I have done it many times and it is a perfectly valid approach.
I am a newbie. As a newbie, drilling into the heat exchanger, and the risk of puncturing the cooling tubes, freaks me out. I thought it might be easier/safer to simply remove the end cap. What are the cans of worms that I could be exposing myself to?
That was Hillarous thanks ever so much for the entertainment 👍
Thank you for the very informative and helpful video. I am dealing with a worst-case scenario too! So, gently as she goes and I'll see what happens. I removed the original zinc (still painted engine colour!) so it's the first check and change for the heat exchanger zinc anode for the boat at 250 hours (and many years after installation). Not ideal
Keep us posted!
Happily after a number of hours of gentle scraping out the old zinc I was able to slide the new anode into position. I also cleaned the threads as suggested and screwed it back into place. I ran the engine and it seems fine - water tight and for now the anode is bright and shiny. Thank you again for an informative and helpful video (perfect for my situation). It gave me the confidence to do the repair well and persevere patiently until the job was complete. Cheers!
A very helpful, step-by-step, informative video! I am looking for some content on removing the manifold on a Westerbeke 30B Three marine diesel engine.. and another one for the Heat exchanger, removing, re-assembling etc. can you recommend any resources?
Excellent video. Ty for posting. When installing the new pencil zinc, is a new o-ring required to maintain a waterproof seal? If no, why is it unnecessary in this particular instance?
I always use the parts that were originally there. I do know guys who skip it.
Hi, thanks for your sharing. Mine is 1988 Crusader 350 CID 270 HP, My zinc fall into the heat exchanger and hard to get it out, as I surveyed on the internet, some people said don't worry too much, for there are times it just stays in the HX, do I need to worry if it will fall into engine or block coolant waterway? Thanks
What makes you think it fell off? If it did, how big the piece it was? If it's a big piece, pull off the end cap and remove the piece. If it's powdery leftovers it's probably gone.
It would be easier just to take the end cap off the heat exchanger and pull the piece out not a big deal
If the purpose of the zinc is to get eaten up instead of the metal of the engine, why do you need to remove the pieces? Aren't they just more zinc to help protect the engine?
is it ok if some of the zinc falls into the hole
The white part, zinc oxide is fine. It flushes through. A chunk of zinc shouldn't be left behind if you can avoid it.
You can unbolt the end cap to pull any out if needed, but have a fresh gasket to keep it from leaking when you put it back together if you do this.
Pull out the core, clean and replace o rings. Needs to be done anyways annually, so why fiddle about trying zink extract?
Because zincs are supposed to be checked seasonally, so you don’t have to “fiddle” with broken pencils, like you would if you waited to do it annually
Why not just remove the end cap and remove the broken piece?
For newbies I do not recommend removing the cap as it opens the whole new can of worms. But I have done it many times and it is a perfectly valid approach.
WHAT A TERRIBLE ACCESS