Re: SM Fresh water pressure tank
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It is probably the rubber bladder that separates the water from the air inside the accumulator. Since SM 387 was new the accumulator tank was replaced only one time about 7-8 years ago. I bought the tank from Amel. The Shurflo 3400-002 is a direct replacement for the upgraded pump #88B, but you have 66B. I would say it is time. I did not try replacing the bladder. I understand that this can be done. Possibly someone here can give you input on that.
You may have trouble locating the tank. TF Marine made pump HA-60, the photo below. TF Marine pumps are readily available in Europe, and some from SAV@..., but hard to buy outside of Europe.
TF Marine srl - 55049 - LUCCA - Italy
On Thu, Jan 7, 2021 at 9:30 AM Dan Carlson <carlsdan61@...> wrote: