cleaning heat exchanger problem

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cleaning heat exchanger problem

Postby Oliver » Mon Oct 07, 2019 7:10 pm

I had an overheating problem above 1,600 rpm. on the Stbd Ford Lehman.Flow of exhaust water is noticeably less that port engine. Worked through cooling system to heat exchanger. End cap only comes off on the end opposite the zinc. How can I inspect and clean it out without being able to have both ends open?

2. I can't get the cap on the the tank to seal. Water blows out instead of going to the overflow bottle. I tried bending the prongs. Got tighter fitting but no fix.
Oliver
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'71 GB 42 Woodie
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Re: cleaning heat exchanger problem

Postby Richard Werner » Mon Oct 07, 2019 10:28 pm

Make sure that you have bled the cooling system.
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Richard Werner
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Re: cleaning heat exchanger problem

Postby Oliver » Tue Oct 08, 2019 9:17 am

Of course. I have owned the boat for 14 years.
Oliver

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Re: update cleaning heat exchanger problem

Postby Oliver » Tue Oct 08, 2019 3:25 pm

When I went to drain the heat exchanger the square headed plug disintegrated! Does anybody have any tips for removing the two bolts? I don't think I can get a socket on the outboard bolt. When I get it off I am going to carefully cut off the other end. If all goes well I will silver solder it back on if the exchanger is worth saving. At $700 or so I can't afford to replace it right now.
Oliver

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