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Old 06-04-2018, 16:16   #16
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Re: Cleaning a Freash Water Tank on a 1977 Morgan 41

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Hello everyone,
Can anyone help me with a piece of advise ... I'm about to buy a 1977 Morgan 41' and among the things on the "to do" list, I would need to clean the fresh water aluminum tank. Is it the same way you do it on an RV? Pour some bleach in there, then water, then flush out? Any helping advise is appreciated - thanks.
Go to sailboatowners.com and search the head mistress. She has the formula to clean your tank and pipes. Really about bleach and rinse.
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Old 06-04-2018, 16:27   #17
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Re: Cleaning a Freash Water Tank on a 1977 Morgan 41

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Good for you! I definitely approve of keeping a Good Old Boat going (we even got the T-shirt "Will work for boat parts!") I see so many boats reduced to landfill by neglect, it's a crying shame.

Our boat had been flooded with meltwater and then frozen, so much of the interior needed removing and refinishing...mildew and water damage...including (thank goodness) the fine parquet flooring that some handy fellow had glued haphazardly to the cabin sole!

We removed and revarnished every single piece of interior teak...painted the bulkheads and inside the lockers and relaminated the horizontal surfaces. A lot of work, but not much expense and there's not much else to do up here in the winter

Also thank goodness, the engine was OK and the sails were good.

We've just finished making new upholstery and canvas, it's taken several years and the final piece (bimini) looks so much better than the first piece (dodger) that I might be obliged to do it again...you do build skills doing this stuff.

It's amazing how good she looks at the end of the process, it's been nearly 10 years...now, perhaps, we can get her in the water "early" for once!

Look us up if you're ever in the 1000 Islands!
Nice that you can get your boat looking almost new.

My interior looks like the old tool shed your granddad may have had, but the boat still looks good in my opinion and is seaworthy enough for now sailing in the Chesapeake Bay and Atlantic Ocean within about 20 miles of land

I just like the older designs...........and couldn't resist buying this one at the $2,000.00 price tag and it came with a dodger, 5 anchors, GPS, Depth, and autopilot.

My 16' 6" Folbot Cooper (folding) Kayak serves as my dinghy
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Old 07-04-2018, 10:36   #18
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Re: Cleaning a Freash Water Tank on a 1977 Morgan 41

Pick a very sporty day, buy 4 big bags of ice cubes, dump the cubes in the tanks and then motor around in the most uncomfortable manner......pump em dry.
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Old 08-04-2018, 04:29   #19
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Re: Cleaning a Freash Water Tank on a 1977 Morgan 41

Davieboy,
Why don’t you join our group”Morgan 41’ owners” on facebook.
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Old 08-04-2018, 05:31   #20
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Re: Cleaning a Freash Water Tank on a 1977 Morgan 41

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Originally Posted by NYSail View Post
Go to sailboatowners.com and search the head mistress. She has the formula to clean your tank and pipes. Really about bleach and rinse.
She is a member of this forum too.

The biggest problem will be the fact that these are 40 year old aluminium tanks, so likely to have a layer of oxide inside the tank which is going to look pretty gross and not something a does of bleach will cure. The oxide is going to look like large lumps of dried dog food. Been there and got the t shirt with a previous boat. Took the tank out and put a flexible tank back in place as a cost effective answer.

Pete
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Old 08-04-2018, 05:48   #21
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Re: Cleaning a Freash Water Tank on a 1977 Morgan 41

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She is a member of this forum too.

The biggest problem will be the fact that these are 40 year old aluminium tanks, so likely to have a layer of oxide inside the tank which is going to look pretty gross and not something a does of bleach will cure. The oxide is going to look like large lumps of dried dog food. Been there and got the t shirt with a previous boat. Took the tank out and put a flexible tank back in place as a cost effective answer.

Pete
Ah aluminum...... different story then. Agree remove and get a new plastic.
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Old 08-04-2018, 07:07   #22
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Re: Cleaning a Freash Water Tank on a 1977 Morgan 41

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"It's too hard" is not an excuse.
Yes it is... I hear it all the time...
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Old 08-04-2018, 12:32   #23
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Re: Cleaning a Freash Water Tank on a 1977 Morgan 41

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If you have the time, how about opening an inspection hatch or if you don't have one then fit one. You might be shocked or pleasantly surprised. Either way at least you will know what's inside a 1977 tank.

Access Panels|tank|hatch|boat|water|TCL4
I fit an inspection hatch and cleaned out the tank good on my 1976 Hallberg Rassy 35. I'm so glad I did. I also shocked the tank with bleach and installed new potable water hose throughout. Inline filtration with a carbon filter gives me total confidence in my drinking from my pressurized waterline. The entire project was cheap and easy.
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Old 08-04-2018, 16:31   #24
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Re: Cleaning a Freash Water Tank on a 1977 Morgan 41

Easy solution is cut and remove al tank and replace with plastic. Old aluminum is vry difficult to clean.
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Old 19-04-2018, 10:57   #25
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Re: Cleaning a Freash Water Tank on a 1977 Morgan 41

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Davieboy,
Why don’t you join our group”Morgan 41’ owners” on facebook.
Tank you for the invite. I will, but first I need to open a facebook account - believe it or not, I do not have one
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Old 19-04-2018, 10:59   #26
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Re: Cleaning a Freash Water Tank on a 1977 Morgan 41

Thank you all for your input. I appreciate it.
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Old 19-04-2018, 12:43   #27
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Re: Cleaning a Freash Water Tank on a 1977 Morgan 41

A power washer wit ha fan tip and a variety of 90s and tees can clean practically any tank, depending on the baffles. That's how the chemical plant guys do it. 55 gallon drums are cleaned through a 2" hole like this buy the thousands every day.

Shop vac out the water as you work.

Lines can often be clean chemically, depending on the materials of construction. Something like CLR is probably a good call for this (aluminum-safe--tested in Practical Sailor--most acid cleaners are not).

Put a screen on the vent to keep future bugs out, and always pre-filter the water.

Not that difficult if you break it down, and way easier than replacement.
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Old 19-04-2018, 13:27   #28
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Re: Cleaning a Freash Water Tank on a 1977 Morgan 41

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A power washer wit ha fan tip and a variety of 90s and tees can clean practically any tank, ....
That is awesome advice, and I DO have a pressure washer too ... .
I will take it in consideration next time I have to clean up the tank.
Thank you very much!
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