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Old 03-06-2016, 13:50   #16
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Re: Rebuilding a Groco Type K head

I rebuilt a Groco once, and it was a royal PITA--over twice as hard to disassemble and reassemble as a simple Jabsco. It lasted exactly one season and needed another rebuild. It was replaced with a Jabsco-- you can get a replacement Jabsco at a reasonable price almost anywhere in the world.
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Old 03-06-2016, 17:17   #17
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Re: Rebuilding a Groco Type K head

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Originally Posted by donradcliffe View Post
I rebuilt a Groco once, and it was a royal PITA--over twice as hard to disassemble and reassemble as a simple Jabsco. It lasted exactly one season and needed another rebuild. It was replaced with a Jabsco-- you can get a replacement Jabsco at a reasonable price almost anywhere in the world.
I think you're talking about the plastic Groco. Which is a pretty good American made toilet.

The Groco Model K toilet is probably the best manual toilet on the market.

The Groco K is a work of art. If Rodin's "Thinker" was sitting on a toilet, as we all imagine him, it would be a Groco K.
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Old 03-06-2016, 22:26   #18
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Re: Rebuilding a Groco Type K head

A work of art does not require use of a coat hanger to reassemble it.
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Old 03-06-2016, 22:56   #19
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Re: Rebuilding a Groco Type K head

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A work of art does not require use of a coat hanger to reassemble it.
Neither does a Groco K. It's not as easy as swapping out a Jabsco plastic pump but you only need to rebuild a K about every ten years or so if it gets heavy use.
The hardest part is removing the hoses that you haven't replaced in five years or more. Don't try to do it on the boat. Take it out and rebuild it on a workbench. Shouldn't take more than an hour once it's on the bench.
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Old 03-06-2016, 23:12   #20
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Re: Rebuilding a Groco Type K head

I'm not sure you have ever seen the inside on the Model K.

GROCO MODEL K TOILET OVERHAUL PROCEDURE

6. Once rings have been properly sized and pin has been checked, replace the crankshaft key in
crank lever assembly using heavy-duty grease to hold the key in place. Remove crank set screw,
#16 from crank arm assembly to enable use of a coat hanger in the setscrew hole to pull the crank
assembly around the corner in pump casting. Reinstall piston and crank assembly into pump
using coat hanger inserted in crank assembly set screw hole to pull crank assembly outward and
upward to permit piston to travel to full down position.
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Old 04-06-2016, 00:07   #21
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Re: Rebuilding a Groco Type K head

There's your problem. You read the instructions! I admit I've only rebuilt three or four of them. My own once and two or three for customers but I've never needed a coat hanger. Might have made it even easier. Thanks for the tip.
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