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Old 18-04-2010, 07:15   #1
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Need Advice on Mounting Replacment Head

I recently picked up a Jabsco twist n' lock replacement head for my Catalina 27. The boat has its original Parr/ITT/Jabso head in it. The issue lies in the head mounting pad. The footprint of the new head is larger than the old head. My thought was to manufacture a 1/2 adapter plate out of lumber and mount the new head in place. One corner of it will sit off the pad a few inches - there is just not enough room. Am I sound in my solution or should I try and find another head that more closely matches the original size?

Thanks

Derek.-
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Old 18-04-2010, 21:01   #2
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I had a similar problem. My head sits amidship in the forward berth.

I measured the area three times and then cut a piece of 1" marine ply as a mounting base. It ended up needing to be a trapezoid shape. I painted it and mounted the head.

The original bolts are captive in a fiberglass molded beam and two had stripped. I mounted the plywood base with only two bolts and it hasn't shifted in 2 years.

Not sure what you mean by one corner will sit off the pad. The head really should sit flat on its base.
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Old 09-05-2010, 17:37   #3
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Here is a shot of the head sitting on the pedestal. The replacement Jabsco I got is just way to big. Going to need a smaller unit to fit the space allotted. The mounting board is just not the right way to handle this solution.

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Old 09-05-2010, 23:41   #4
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That looks fine. But also isn't there a left hand pump model? Perhaps you could exchange the pump... or thinking about it, cant the pump be swung around and used in 'reverse' where you unscrew the bowl off the base, and unscrew the pump at the outlet?
You might have to reconfigue your hoses.

But I think your method looks fine
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Old 09-05-2010, 23:45   #5
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Have a look at the Jabsco website:
Twist 'n' Lock Manual Toilets > Manual Toilets > Toilet Waste Systems > Jabsco - ITT

Reversible pump mounting for choice of right or left handled installation.

And the tech sheet with it has a blow by blow description of changing it to a lefty

http://www.jabsco.com/files/itemdoc142681.pdf

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Old 10-05-2010, 07:59   #6
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I didn't think about flipping it. But looking at the space. I am wondering if its going to sit to close to the bulkhead?
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Old 10-05-2010, 11:10   #7
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Id mount it on top of the neck, with ears over shoulders, and eyes over naval.
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Old 10-05-2010, 11:14   #8
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I didn't think about flipping it. But looking at the space. I am wondering if its going to sit to close to the bulkhead?
I see what you mean. But also sitting close to the bulkhead could be good in a seaway to brace against?

Could the little pedestool be designed for it to be in that configuration?

They always make the smallest room in the house small. I wonder why? LOL
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Old 10-05-2010, 11:38   #9
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Here is a shot of the original head. As you can see its configured differently. Might be looking at replacing the Jabsco with a Raritan or Groco unit in order to get it to fit.
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Old 10-05-2010, 12:18   #10
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Here is a shot of the original head. As you can see its configured differently.
yeah, it does look different. Never seen a duny in the cockpit!

Jabsco have a compact too
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Old 13-05-2010, 21:51   #11
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Ok without pics this will be hard to describe but here is what I would do.

1 - Cut the underlying board (the mount) the same shape as the fiberglass pedestal that is there. However extend the mount beyond the pedestal enough so that the head can be rotated (about 45 degrees) in the space. The front end of the board will have a parallel angle to the front end of the underlying pedestal
2 - The head will now be mounted diagonally in the space.
3 - If required for stability and support at the front end of the mount extend legs or even a full front facia extending to the sole to support the front end of the head.

I am pretty sure I have the same head with the compact bowl. It might fit your needs a little better but the limiting item you have right now is the mount and I think that is the same - i.e. the compact bowl doesn't have a more compact mount.
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