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Pencil Zinc Install
This topic has 19 replies, has 12 voices, and was last updated by
2 years ago
May 8, 2017 at 9:21 am In an effort to not ignore the basics, I’m posting these tips on replacing zincs. The aftercooler and heat exchanger zinc cap threads are 1/2″npt and the gear cooler zincs caps are 3/8″npt. Having taps of each size in your “zinc kit” is a good idea so you can chase those threads clean. Thread the new pencils onto your caps and snug them up you do not want them coming lose and banging up the tube ends of your coole…
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in: Cummins Marine Engines
19 RepliesApril 27, 2022 at 5:44 pm I will chime in also. I Rectorseal #5 the zinc threads themselves. Then I use pliers or a vise and a wrench to tighten the zinc into the cap. Snug firmly only as the smaller ones can be weak and break if overtightened. Seals the threads so they are protected from the seawater so they do not degrade, at least not untill the rest of the zinc is gone. That way they do not fall out of the cap. I then rectorseal the cap threads for th…Last Post by:
posted: 2 years ago
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2015 Cummins QSB 5.9 480 HP
This topic has 3 replies, has 2 voices, and was last updated by
4 years ago April 14, 2019 at 1:38 pm Good day , Anyone have any issues with these engines I have them in a Cabo 35 Express with about 280 Hours been in fresh water most of her life thanks for any reply’s
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in: Cummins Marine Engines
3 RepliesMarch 6, 2020 at 4:39 pm Not at all, but that only is a band-aid for a calcium/ lime/zinc contiminated saltwater side on the cooling system– Does not come close or address what really matters–aftercooler servicing per my protocol.Plus it does not address organic fowling such as grass or impeller pieces which can be big-time. TonyLast Post by:
posted: 4 years ago
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Pencil Zinc Install
