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Fish Box Macerator Pump

 
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Westie



Joined: 08 Jun 2014
Posts: 177
City/Region: Bodega Bay
State or Province: CA
C-Dory Year: 2006
C-Dory Model: 255 Tomcat
Vessel Name: True North
Photos: Westie
PostPosted: Mon Jan 26, 2015 9:42 pm    Post subject: Fish Box Macerator Pump Reply with quote

The macerator pump on my starboard fish box stopped working. I have a few questions I could use some help with:
1) is there a fuse? I wasnt able to locate anything in the main panel
2) Can you remove the filter cover in the fish box? Mine seemed pretty tight and I didn't want to break it. My guess is something got jammed in there

Any other fish box advice is welcome. I sure loved it when it was working properly!
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Bill K



Joined: 28 Sep 2012
Posts: 314
City/Region: Toledo
State or Province: OH
C-Dory Year: 1989
C-Dory Model: 22 Cruiser
Vessel Name: NIC'L PIC'L
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PostPosted: Mon Jan 26, 2015 9:52 pm    Post subject: Reply with quote

Look for an inline fuse somewhere in the positive wire.

Bill Kelleher

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redbaronace



Joined: 29 Aug 2012
Posts: 581
City/Region: Puget Sound
State or Province: WA
C-Dory Year: 2006
C-Dory Model: 255 Tomcat
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PostPosted: Tue Jan 27, 2015 12:12 am    Post subject: Reply with quote

Could be a fuse. Could also be your pump failed.

We have rebuilt and replaced those pumps several times already on the various tomcats that we owned..

Other times if we turned it on and heard no sound, it was an electrical problem.

Good luck in your troubleshooting.
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Pacificcoast101



Joined: 29 Sep 2007
Posts: 717
City/Region: Torrance
State or Province: CA
C-Dory Year: 2008
C-Dory Model: 255 Tomcat
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PostPosted: Tue Jan 27, 2015 12:55 am    Post subject: Reply with quote

Check the fuse box first. There should be a 20 amp fuse for each pump. If the fuse is good, remove the black rubber cap on the end of the pump and use a flat head screwdriver to manually turn the pump a few rotations. This will sometimes clear any debris caught in the impeller. If this doesn't work you may need to replace the pump. I've had to replace my starboard pump, and the hardest part is getting to it inside the stern.
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rogerbum



Joined: 21 Nov 2004
Posts: 5922
City/Region: Kenmore
State or Province: WA
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C-Dory Model: 255 Tomcat
Vessel Name: Meant to be
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PostPosted: Tue Jan 27, 2015 9:30 am    Post subject: Reply with quote

While it might be a fuse, I'd bet the pump has failed. I've had 4 Johnson macerator pump failures in my fish boxes in about 3 years. Last year I replaced them both with Whale Gulper Grouper pumps. Hopefully, those will last a bit longer.
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Discovery



Joined: 08 Dec 2003
Posts: 1239
City/Region: LOA, UTAH
State or Province: UT
C-Dory Year: 2006
C-Dory Model: 255 Tomcat
Vessel Name: Discovery
Photos: Discovery
PostPosted: Tue Jan 27, 2015 10:00 am    Post subject: Reply with quote



The above image is from the "Dreamer" album, but I did the same modification to the fish box's on Discovery. It allows better access to the macerator pumps, also to the bilge pumps.

Use a 6" screw-in type deck plate. Get a plate with an "O" ring, and use 4200 to set the plate in. They don't leak if well bedded with 4200, and contain a good "O" ring.

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1984 22' Classic sold 2003
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Westie



Joined: 08 Jun 2014
Posts: 177
City/Region: Bodega Bay
State or Province: CA
C-Dory Year: 2006
C-Dory Model: 255 Tomcat
Vessel Name: True North
Photos: Westie
PostPosted: Tue Jan 27, 2015 10:21 am    Post subject: Reply with quote

Thanks for the replies. That mod looks good.
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BrentB



Joined: 15 Jul 2006
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PostPosted: Tue Jan 27, 2015 10:23 am    Post subject: Reply with quote

Check the voltage at the fuse too
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Westie



Joined: 08 Jun 2014
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City/Region: Bodega Bay
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C-Dory Year: 2006
C-Dory Model: 255 Tomcat
Vessel Name: True North
Photos: Westie
PostPosted: Sun Mar 11, 2018 9:18 pm    Post subject: Reply with quote

My fishbox macerator pump finally blew! Any advice for a pump to replace it?
I also need a switch for the other pump. My mechanic blew that when debugging the other. The day was actually great as I rewired every battery terminal connection!
Any suggestions?

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rogerbum



Joined: 21 Nov 2004
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City/Region: Kenmore
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C-Dory Model: 255 Tomcat
Vessel Name: Meant to be
Photos: SeaDNA
PostPosted: Sun Mar 11, 2018 10:07 pm    Post subject: Reply with quote

Westie wrote:
My fishbox macerator pump finally blew! Any advice for a pump to replace it?
I also need a switch for the other pump. My mechanic blew that when debugging the other. The day was actually great as I rewired every battery terminal connection!
Any suggestions?

My Whale Gulper Grouper pumps are still going strong after 3 years. They are slower than the Johnson macerator pumps but appear to last much longer (in my experience, your mileage may vary).
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