RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Newmar Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 08-09-2019, 05:58 PM   #1
Senior Member
 
redbaron73's Avatar


 
Newmar Owners Club
Freightliner Owners Club
Join Date: Jun 2011
Location: Texas
Posts: 4,683
Blog Entries: 4
Dometic Macerator Leak

I just completed a repair that I have always dreaded. One that nightmares are made of.

Late Wednesday night my wife told me there was a problem with the rear toilet, and that we need a plunger.

The bowl was half full, and like an idiot, I pressed the flush button hoping for a different result.

The macerator was "churning" but not evacuating the bowl. Water proceeded to fill...ending just 1/4" from overflow.

[This portion of story intentionally left blank...too much trauma]

Once enough water was removed from the bowl, I opened the emergency exit door and went outside to have a look at the back side.

I was shocked to find a puddle of effluent on the floor under the toilet...not a good sign. Click image for larger version

Name:	Screenshot_20190807-223731_Drive.jpeg
Views:	27
Size:	58.4 KB
ID:	256361

I removed the black hose (#17 in diagram) from the duck bill valve connection (#12) and discovered a "clog".

Using tools that were later discarded, the clog was pushed thru, and the hose reassembled.

I then flushed the toilet, and it worked, but I now noticed a new problem. Water was dripping from the macerator pump housing.

As I dig around under toilet to determine the source of the leak, I found that Newmar had just stuffed the toilet control panel under the pump, and water was collecting on it.

I had to remove to bolts to get the toilet out of its position and lean it forward to clean up the mess and determine the failed part.

Thursday morning I called Newmar and within an hour of the initial contact, parts where being overnight shipped to me.

Newmar did offer to dispatch a tech, but I had already done the majority of the work, I preferred to just complete the job myself.

Newmars policy for warranty parts is the customer pays for the part before newmar will ship. Newmar then provides return shipping labels and once the part is returned a refund check is processed. I was fine with this and knew the drill.

What shocked me was the price. This part is sold for $250-290 most anywhere, and retails for $340. Newmar charged $1089 before shipping. That is crazy markup...even for Newmar. Doesn't really matter, since I get it back, but dang...that is crazy.

The part arrived today and the install was fairly painless.

I spent some time reattaching the control box with zip ties and 2 sided tape to keep it above water, as the dometic leak is a known and common problem.

I would recommend that everyone inspect their toilets for leaks now, and move your control box if it is just thrown in like mine was.

The mid toilet control box is behind the pegboard, and that is a whole separate mess.

Here are pictures showing how I positioned the toilet for repair, Click image for larger version

Name:	20190809_110759.jpeg
Views:	23
Size:	58.9 KB
ID:	256363

a close up of the leaky macerator (look for rust..that is where it was leaking internally, coming out along the motor shaft),Click image for larger version

Name:	20190809_111151.jpeg
Views:	19
Size:	51.9 KB
ID:	256364 Click image for larger version

Name:	20190809_111141.jpeg
Views:	24
Size:	53.2 KB
ID:	256366 Click image for larger version

Name:	20190809_111136.jpeg
Views:	22
Size:	107.8 KB
ID:	256367and a final picture of work completed.Click image for larger version

Name:	20190809_124129.jpeg
Views:	33
Size:	62.2 KB
ID:	256365
__________________

__________________
2019 DSDP 4369 * FREIGHTLINER XCR * HWH ACTIVE AIR

NHSO (Newmar Hoot, Sevierville Original), Kindness Matters
redbaron73 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 08-09-2019, 06:16 PM   #2
Senior Member
 
Jtrving's Avatar


 
Join Date: Mar 2017
Location: Powhatan, VA
Posts: 524
Oh goodness. A repair well done, and one I hope to never have to do..
__________________

__________________
Jeff & Tracie (Stella & Hoonah - the rescue mutts)
2018 Mountain Aire 4531
2013 Jeep Wrangler Sport
Jtrving is offline   Reply With Quote
Old 08-09-2019, 06:21 PM   #3
Senior Member
 
redbaron73's Avatar


 
Newmar Owners Club
Freightliner Owners Club
Join Date: Jun 2011
Location: Texas
Posts: 4,683
Blog Entries: 4
I "had" a new bag of micro fibre towels. 50 pack.

All where used and discarded...and I was not aware of the leak prior to the clog, but it was definitely leaking for a while as shown by the rust.

I hate the fact that the new part is the same as the old, and there is no way to prevent the leak. This explains why Newmar changed toilets in 2020.
Quote:
Originally Posted by Jtrving View Post
Oh goodness. A repair well done, and one I hope to never have to do..
__________________
2019 DSDP 4369 * FREIGHTLINER XCR * HWH ACTIVE AIR

NHSO (Newmar Hoot, Sevierville Original), Kindness Matters
redbaron73 is offline   Reply With Quote
Old 08-10-2019, 07:35 AM   #4
Senior Member
 
Join Date: Nov 2014
Posts: 2,228
Quote:
Originally Posted by redbaron73 View Post
I "had" a new bag of micro fibre towels. 50 pack.

All where used and discarded...and I was not aware of the leak prior to the clog, but it was definitely leaking for a while as shown by the rust.

I hate the fact that the new part is the same as the old, and there is no way to prevent the leak. This explains why Newmar changed toilets in 2020.
What were the toilets changed to?
__________________
2019 Dutchstar 4369 Spartan. Full wall failure survivor.
Canuck53 is online now   Reply With Quote
Old 08-10-2019, 08:02 AM   #5
Senior Member
 
redbaron73's Avatar


 
Newmar Owners Club
Freightliner Owners Club
Join Date: Jun 2011
Location: Texas
Posts: 4,683
Blog Entries: 4
Model 8920.
Quote:
Originally Posted by Canuck53 View Post
What were the toilets changed to?
__________________
2019 DSDP 4369 * FREIGHTLINER XCR * HWH ACTIVE AIR

NHSO (Newmar Hoot, Sevierville Original), Kindness Matters
redbaron73 is offline   Reply With Quote
Old 08-10-2019, 08:07 AM   #6
Senior Member
 
CoreyinWP's Avatar


 
Newmar Owners Club
Join Date: Dec 2012
Location: West Palm Beach, Fl
Posts: 1,451
Quote:
Originally Posted by redbaron73 View Post
Model 8920.
It is a very nice improvement. I just installed one.

Surprised to see your control box behind toilet,,,mine is under the floor of the back closet.
__________________
Corey and Tammi
2017 Ventana 4369
2015 Buick Enclave
1360W Solar, BattleBorn LiPo 800ah
CoreyinWP is offline   Reply With Quote
Old 08-10-2019, 11:24 AM   #7
"Formerly Diplomat Don"
 
Dutch Star Don's Avatar
 
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 14,935
Glad you found the controller location. My tanks acted up for a couple of hours on our last trip and I hadn't identified the controller location in case I needed to cut the red light wire. One nice thing....is being able to open that emergency door and access the back of the toilet.
__________________
Don & Mary
2019 Newmar Dutch Star 4018
2016 GMC Canyon 4WD Crew Cab
Dutch Star Don is offline   Reply With Quote
Old 08-10-2019, 11:47 AM   #8
Senior Member
 
Winepress's Avatar
 
Join Date: Jul 2012
Posts: 1,385
Not to get graphic, but how did it clog? Was it the failure of the pump, too much TP? Foreign item?
__________________
2018 Dutch Star 4369
Everything was working fine, until it wasn't.
Winepress is offline   Reply With Quote
Old 08-10-2019, 01:41 PM   #9
Senior Member
 
Granite17's Avatar
 
Join Date: May 2018
Posts: 270
Good tip! I just checked mine, no leaks ! I did tighten all the clamps
and pull the control box up off the floor and zip it up to the sidewall.
Thanks for sharing this one!
__________________
John, Sharon & (Luna-Australian Sheppard)
19' Newmar Dutch Star 4018
19' GMC Canyon-Blue Ox, Avail, Air force One.
Granite17 is offline   Reply With Quote
Old 08-10-2019, 04:09 PM   #10
Registered User
 
Newmar Owners Club
Appalachian Campers
Freightliner Owners Club
Join Date: Feb 2017
Location: Midlothian, VA
Posts: 4,774
Iíve clogged mine three times. Cause: KLEENEX.

Nothing goes in my macerator other than the rapid dissolving RV toilet paper I get from amazon.
NealC is offline   Reply With Quote
Old 08-10-2019, 06:22 PM   #11
"Formerly Diplomat Don"
 
Dutch Star Don's Avatar
 
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 14,935
Maybe you need one of these!

Click image for larger version

Name:	71fK3nJIM+L._AC_UL640_QL65_.jpg
Views:	11
Size:	13.7 KB
ID:	256461
__________________
Don & Mary
2019 Newmar Dutch Star 4018
2016 GMC Canyon 4WD Crew Cab
Dutch Star Don is offline   Reply With Quote
Old 08-10-2019, 06:28 PM   #12
Registered User
 
Newmar Owners Club
Appalachian Campers
Freightliner Owners Club
Join Date: Feb 2017
Location: Midlothian, VA
Posts: 4,774
Nah, my problems went away when I started using these. Highly recommended.
Attached Thumbnails
Click image for larger version

Name:	bags.jpg
Views:	9
Size:	367.4 KB
ID:	256462  
NealC is offline   Reply With Quote
Old 08-10-2019, 07:25 PM   #13
Senior Member
 
redbaron73's Avatar


 
Newmar Owners Club
Freightliner Owners Club
Join Date: Jun 2011
Location: Texas
Posts: 4,683
Blog Entries: 4
The problem was caused by too much paper with too little water. I had low flush mode enabled, which only compounded the problem.

I have now reset to normal water mode and will deal with the shorter tank intervals. At least that wont require a "dirty job"
__________________
2019 DSDP 4369 * FREIGHTLINER XCR * HWH ACTIVE AIR

NHSO (Newmar Hoot, Sevierville Original), Kindness Matters
redbaron73 is offline   Reply With Quote
Old 08-10-2019, 08:03 PM   #14
Registered User
 
Newmar Owners Club
Appalachian Campers
Freightliner Owners Club
Join Date: Feb 2017
Location: Midlothian, VA
Posts: 4,774
Here's what I learned in my 3 macerator clogs:

1) Leave it alone for several hours. The paper product will break down in time.
2) When ready to do a test flush turn off the water so that your bowl doesn't keep filling with each attempt
3) If you have drano add some to help break the stuff down. You'll have to do a flush with or without water to get some into the clogged area. Drano is plastic safe, just flush several times and empty tanks when saga/drama is over
__________________

NealC is offline   Reply With Quote
Reply

Tags
ace, dometic, leak, macerator



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dometic 8700 Macerator Toilet Wall Light LK23 Newmar Owner's Forum 6 11-26-2016 04:22 PM
Dometic 8700 Macerator Toilet Operation LK23 Newmar Owner's Forum 10 10-05-2016 10:53 PM
Dometic Macerator Toilet Clayobx Class A Motorhome Discussions 1 07-30-2014 09:23 PM
Dometic 8700 macerator toilet jbrantjb Newmar Owner's Forum 7 01-11-2014 03:17 PM
Dometic macerator toilet low water flow Bay37QSB RV Systems & Appliances 3 10-08-2013 08:18 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 01:05 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
×