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Old 09-19-2019, 11:24 AM   #1
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Tecma toilet repair ?

My rear bath toilet is not flushing. I am thinking the impeller is toast as I hear the motor spinning, but no flushing occurs. Just wondering if anyone has taken theirs apart and if there are any precautions . Good thing is there is nothing but water in the toilet so I don't have to worry about that aspect, other than sponging out the water before removing it.
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Old 09-19-2019, 11:34 AM   #2
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Haven't had to work on that toilet........but here is an Installation/Operations Manual with exploded views
Hope it helps.

https://www.thetford.com/wp-content/...enceRV-Eng.pdf
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Old 09-22-2019, 06:21 AM   #3
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Well, I guess I'll just take it off and apart next week and see what's going on
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Old 09-22-2019, 07:14 AM   #4
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I have replaced both. It is not hard but also not fun. The hardest part is hooking it back into the rv. Disconnect toilet, put in trash bag, replace pump on lawn. Clean up and put back in.
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Old 09-22-2019, 08:01 AM   #5
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I imagine putting it in is a bit of a challenge due to the lack of space
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Old 09-22-2019, 09:27 AM   #6
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Is there a rebuild kit for the motor/impeller? I see that the entire assembly 38056 is available, but if you just need the parts, why buy the entire thing?
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Old 09-22-2019, 11:13 AM   #7
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Is there a rebuild kit for the motor/impeller? I see that the entire assembly 38056 is available, but if you just need the parts, why buy the entire thing?
I haven't found a rebuild kit online yet.... once I get it apart, I'll see what I might need and go from there. I see rebuild kits for marine heads, so maybe there is one that is compatible.
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Old 09-22-2019, 11:37 AM   #8
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We have 3 tecma toolets on our boat.

I have only changed one ( 38056 )
Kit out in near 20 years.

But it only took about 30 minutes .

Our Marina parts store keeps them in stock.

I have seen them for as low as $260. To $280
On Amazon and at Marina, yaucht supply stores that advertise on the internet.

I suggest that if you pull the toilet ?
Replace the whole assembly while your at it.

Just my opinion.Click image for larger version

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Old 09-22-2019, 11:48 AM   #9
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"PanJH".....Is it a Tecma or Dometic? If so, they must have changed toilets from 2013 - 2014. My 2014 had Dometic macerator toilets. I actually bought a spare Dometic macerator pump for the rear toilet years ago, because ours was whining, but it was still working when we sold the coach.

When I pulled mine out after it plugged, it was much easier to put a towel down on the floor, unbolt the toilet and slide it onto the towel in an open area. I tried to disassemble the pump while still on the toilet.....huge mistake.....don't ask why. Instead, remove the pump assembly, take it outside and work on it where you can make a mess.
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Old 09-23-2019, 06:39 AM   #10
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Quote:
Originally Posted by Dutch Star Don View Post
"PanJH".....Is it a Tecma or Dometic? If so, they must have changed toilets from 2013 - 2014. My 2014 had Dometic macerator toilets. I actually bought a spare Dometic macerator pump for the rear toilet years ago, because ours was whining, but it was still working when we sold the coach.

When I pulled mine out after it plugged, it was much easier to put a towel down on the floor, unbolt the toilet and slide it onto the towel in an open area. I tried to disassemble the pump while still on the toilet.....huge mistake.....don't ask why. Instead, remove the pump assembly, take it outside and work on it where you can make a mess.
Don,
It is a Thetford Techma- I was hoping to get to it today, but other things came up so it'll be deferred a few days. I was planning on doing like you suggested... unbolt it, slide it onto a moving blanket and take out the pump and see what I find . No need to lug that heavy (65 lb) unit outside.
Joe
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