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Topic: Aqua Hot Repair (Read 2109 times) previous topic - next topic

Aqua Hot Repair

I was low on anti-freeze on the aqua hot so I filled up the overflow tank. This is third time having to fill the tank.  The first was after returning from FOT for service in spring of 2016. I had work done on a few things one being the servicing of the aqua hot.  This third time, so I decided to check things out first before filling it up again.  Removed the cover and found the center circulating pump leaking.  Wondering why FOT didn't say anything about it.  It had to be leaking for a while.  Either way it needs to be fixed.  Do I replace the pump or clean it up and replace any seals?  If I replace what is the part number to the pump or seal kit if one is available? What is the procedure for removing the pump?  It wasn't easy trying to get a good picture in their with the IPAD.
Thanks in advance for the help,
John M
John & Carm Morales

"We travel not to go anywhere, but to just go.  We travel for travel's sake.  Our great desire is to move."

Re: Aqua Hot Repair

Reply #1 –
Talked to John and he now has a plan to fix it.  O-rings I think.
Rudy Legett
2003 U320 4010 ISM 450 hp
2001 U320 4220 ISM 450 hp
1995 U320 M11 400 hp
1990 Granvilla 300 hp 3208T
Aqua Hot Service Houston and Southeast Texas

Re: Aqua Hot Repair

Reply #2 –
Rudy,
I know it's not a great picture, but that is where It looks like it's leaking, at the bottom of the pump.  It drips on the engine circulating pump.  There was a large sticky glob of anti-freeze underneath the pump.  I am going to try and tighten the screws as you suggested with a ratcheting driver first.  If that doesn't work we will take it out and look at the possibilities of replacing all of the o-rings as you suggested.  Otherwise we will get a used one from Roger as you suggested.  It is tight working in the bay.  Makes me want to give up my aqua hot but it has to get done.
Thanks for your help and input,
John M.

P.S. I did signed up in the Aqua Hot Forum.
John & Carm Morales

"We travel not to go anywhere, but to just go.  We travel for travel's sake.  Our great desire is to move."

Re: Aqua Hot Repair

Reply #3 –
John
Totally agree on how difficult it is to work on the Agua Hot inside the front bay.  Every time I work on mine I hurt for a week.  Hope all goes well with your repair.

Jason

Jason
1999 U320 36'

Re: Aqua Hot Repair

Reply #4 –
Thanks Jason!  We are going to try.  Might as well do other service while I'm in there. 😁
John M
John & Carm Morales

"We travel not to go anywhere, but to just go.  We travel for travel's sake.  Our great desire is to move."

Re: Aqua Hot Repair

Reply #5 –
While buying parts on Rogers site I noticed a mention that those O rings on the pumps of my generation Aqua Hot were problematic and there was a service kit for them. Mine don't leak at this time and when they do go they give enough notice to buy the kits then rather then letting them age in my spare parts bin.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Aqua Hot Repair

Reply #6 –
Craneman,
With that problem in mind just wondering if I should do all of them since I am in there.  Preventative maintenance. Or, if it ain't broke, don't fix it.  We have the 432/12 aqua hot, is that what you have?
Thanks,
John M
John & Carm Morales

"We travel not to go anywhere, but to just go.  We travel for travel's sake.  Our great desire is to move."

Re: Aqua Hot Repair

Reply #7 –
Quote from: John Morales –
Craneman,
With that problem in mind just wondering if I should do all of them since I am in there.  Preventative maintenance. Or, if it ain't broke, don't fix it.  We have the 432/12 aqua hot, is that what you have?
Thanks,
John M
Yes, I have the same model. Our coaches are only 4 numbers apart.
 If I do one, I will do them all. Only have to deal with the mess one time.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Aqua Hot Repair

Reply #8 –
Craneman,
I agree, suffer only once.  I just may wait till I get home in Florida.  There is a lot of work in there. It's easier to do the work at home.  Working at the campground is rough.  The coach is under the Motorsport in Florida with access to all of the tools.  Currently trying to get a hold of Roger for parts.
John M
John & Carm Morales

"We travel not to go anywhere, but to just go.  We travel for travel's sake.  Our great desire is to move."

Re: Aqua Hot Repair

Reply #9 –
I usually just use his computer system for buying parts.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Aqua Hot Repair

Reply #10 –
Trying to find the o rings for the pumps is proving to be a challenge with no luck.  Roger from RV Hydronic Heater said he use to carry them but stopped because they were fitting too tight.  I am still looking for a replacement.

John M.
John & Carm Morales

"We travel not to go anywhere, but to just go.  We travel for travel's sake.  Our great desire is to move."

Re: Aqua Hot Repair

Reply #12 –
T-Man,
We just don't know what size.  Still searching.
John M.
John & Carm Morales

"We travel not to go anywhere, but to just go.  We travel for travel's sake.  Our great desire is to move."

Re: Aqua Hot Repair

Reply #13 –
John,
The webpage has a link to purchase if you know the size you need.  Mic the one(s) you have............ or ask Roger Burke.

Re: Aqua Hot Repair

Reply #14 –
I found the Aqua Hot Parts Manual.  Page 10 shows the breakdown and that the Pump part number is PLX-809-200 and the description of the pump is BR-809 Circulation Pump.
http://www.aquahot.com/files/parts_manual/AHE-100-02S_Parts_Manuals_Rev_B.pdf

I searched BR-809 Circulation Pump and found the pump parts breakdown at AETSOLAR made by March Pumps.  On page 2 it shows the O-Ring listed as a .070 CS X 2.441 ID made from Silicone, Part Number 0809-0165-1000.
https://www.aetsolar.com/literature/0809-0053-1300.pdf

My Aqua Hot pump is a Webasto. Even though this pump is made by March, do you all think the specs would be the same?

John M.
John & Carm Morales

"We travel not to go anywhere, but to just go.  We travel for travel's sake.  Our great desire is to move."

Re: Aqua Hot Repair

Reply #15 –
Have you tried contacting Aqua Hot directly to ask about the O-Ring size, repair kit, etc?

Chris

Re: Aqua Hot Repair

Reply #16 –
Dummy me.  I went back to the picture to see if I can find any info of the pump.  The pump is a March pump.  I will double check any part numbers tomorrow.  I guess I solved my own problem.  Anyways thanks everyone for the help and suggestions.  I will post pump verification tomorrow.
John M.
John & Carm Morales

"We travel not to go anywhere, but to just go.  We travel for travel's sake.  Our great desire is to move."

Re: Aqua Hot Repair

Reply #17 –
That O ring part number is for the brass pump the number for the plastic is different. The BR 809 PL model pump From your picture is what we have.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Aqua Hot Repair

Reply #18 –
Craneman,
I pretty sure the pump is brass.  I will double check tomorrow and let you know.
John M.
John & Carm Morales

"We travel not to go anywhere, but to just go.  We travel for travel's sake.  Our great desire is to move."

Re: Aqua Hot Repair

Reply #19 –
Well, I was able to get into the Aqua Hot cave to determine which Pump I had.  Would have done it yesterday but it was raining.  Turns out I have the 809-BR which takes the 0809-0165-1000 O-ring listed in the documentation I posted earlier.  I was able to find the part on EBay and ordered 4.  Since I have to suffer and make a mess, I might as well do all 4 pumps.  So much work for a freaking $2.00 part. 😠  Attached are 2 pictures of the pump showing the pump part number, the Bronze pump and the parts list.  Also attached the link to the part on EBay.
John M

March 0809-0165-1000 Silicone O-ring for 809 BR | eBay
John & Carm Morales

"We travel not to go anywhere, but to just go.  We travel for travel's sake.  Our great desire is to move."

Re: Aqua Hot Repair

Reply #20 –
Sounds good John.  Maybe you need to check with Roger Burke to discuss the size problem he had before you install al of them.
Quote from: John Morales –
Roger from RV Hydronic Heater said he use to carry them but stopped because they were fitting too tight.

Re: Aqua Hot Repair

Reply #21 –
Roger never said where he was getting the o-rings from.  If you look at the table on Reply-19 the size is not common.  I checked different o-ring manufacturers/suppliers and couldn't find a match using the dimensions listed.

John M.
John & Carm Morales

"We travel not to go anywhere, but to just go.  We travel for travel's sake.  Our great desire is to move."
 

Re: Aqua Hot Repair

Reply #22 –
John:
Thanks for all your hard work and posting your results.  I was servicing my Aqua hot today and found the same leak as yours except mine is zone A.  I ordered 4 of the O rings as well.  Again thank you.

Jerrett
Jason
1999 U320 36'