groco HF backsplash

[Mickstr]

Have the boat about 7 years, no issue with head. I always pump dry, and add clean water in the bowl instead of flushing wet and bringing sea water in.

This year, the fluids/solids pump out good, but when I get to the last few pump strokes, it splashes back into the bowl.

I bought a rebuild kit, and replaced everything included in it except the pump shaft seal, and it's still happening..

Any ideas? I use head lube a few times a year, and use the head maybe 12-20 times a season....

 

[Donnybrook]

Have you checked the vent to your holding tank?

 

[Mickstr]

Donnybrook, would that come into play with a near empty holding tank? And, no, I haven't...

 

[Pat]

If you don't find someone on this site that has an answer, I would go to Google and call
Groco and describe what you say above....I'll bet their service dept. knows exactly what is wrong...and can give you good advice. Pat

 

[Mickstr]

Thanks Pat! I just called Groco, and talked to a real person! he told me I need to replace the Gasket (item 19/pn HE-8), which I got in the rebuild kit. Should be back in service in a day or so. Also recommended I remove the two screws (item 6) holding the discharge elbow on, and move the elbow out of the way for easy access to the screws holding the gasket in place.

Appreciate the tip!

 

[Peggie Hall HeadMistress]

Donnybrook, would that come into play with a near empty holding tank? And, no, I haven't...

Yes, it would. When the vent is blocked, the air in the tank displaced by flushing has nowhere to go...so the tank becomes pressurized, creating backpressure that prevents bowl contents from going anywhere, so the head "spits up" or burps. If there's not much in the tank, you might be able to pump a few times before you run into resistance.

Tank vent is always the first thing to check when the the toilet burps, spits up, and/or starts becoming harder to flush. Keep trying and you can burst the tank...or get a face full when you open the pumpout fitting...or worse yet, an eruption back through the toilet.

You might want to spend some time researching this forum archives for the information that will teach you how a marine sanitation system works and what various symptoms mean when it starts acting up.