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Topic: Here I go again...AquaHot still leaking fuel. (Read 737 times) previous topic - next topic

Here I go again...AquaHot still leaking fuel.

Sent the burner off to Roger, He did not find any leaks but did the service anyway (and sent spare parts for the next service)
re-installed.......BAD WORDS... still leaking fuel, dripping off the Banjo tubes.
Got a magnifying glass (tri focals just do not cut it) and discovered grooves on the rubber hose fitting and corresponding deformation on the tip of the banjo fitting.. possibly from over tightening ? don't know.
Went on Roger's site and ordered new banjo kit with the fittings for the rubber fuel & return lines........ BUT WAIT!.... What's this note about the new banjo fittings are ASME and the old banjo fittings are metric  to the fuel pump.... more bad words......had to order a new pump to match the new banjo tubes ......
Have not much of a clue as to how this will work out... soo stay tuned
'02 40' U320t  4010WTFS Build 6036 1 slide
Motorcade # 17841
SKP 151920
Retired truck driver
 5 million miler
Still have itchy feet for travel

Re: Here I go again...AquaHot still leaking fuel.

Reply #1 –
Dont the banjo fittings use double faced washers with s viton sealing surface?
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: Here I go again...AquaHot still leaking fuel.

Reply #2 –
Really frustrating when u can not get the correct repair parts.  This is a good reason to buy name brand parts.  A leak like ours is repairable with correct fittings. Good luck
Dan & Shirley Stansel
2002 U295 4020 AGDS Build#6054
Towing Buick Enclave & M &  G Braking
Emerald Bay, Lake Palestine, Texas
MC# 16650

Re: Here I go again...AquaHot still leaking fuel.

Reply #3 –
Couldn't you have just re-used the metric banjo bolt and seals?
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: Here I go again...AquaHot still leaking fuel.

Reply #4 –
Quote from: craneman –
Couldn't you have just re-used the metric banjo bolt and seals?
The damage is at the other end of the Banjo tubes, where the rubber fuel & return hose & fittings mate up to the Banjo tubes... Not the pump end
'02 40' U320t  4010WTFS Build 6036 1 slide
Motorcade # 17841
SKP 151920
Retired truck driver
 5 million miler
Still have itchy feet for travel

Re: Here I go again...AquaHot still leaking fuel.

Reply #5 –
pics
'02 40' U320t  4010WTFS Build 6036 1 slide
Motorcade # 17841
SKP 151920
Retired truck driver
 5 million miler
Still have itchy feet for travel

Re: Here I go again...AquaHot still leaking fuel.

Reply #6 –
Another change, mine just has long nipples and hose clamps.
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: Here I go again...AquaHot still leaking fuel.

Reply #7 –
Maybe you could cut off the end on the line and then slip the hose over and clamp.
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: Here I go again...AquaHot still leaking fuel.

Reply #8 –
A new burner assembly from Aqua Hot solves everything and comes with a new control box.  Yes it costs some money, but there is no question that everything is new, sealed, fits, and has been tested.  Drop it in and fire it up.  Just make sure your old fuel lines aren't dried out and cracked.

Chris

Re: Here I go again...AquaHot still leaking fuel.

Reply #9 –
Well the plot thickens some more.......I had removed the fuel cap, then blew thru the return line from the aquahot side.....it was clear, so didn't look further...should have...
I think that yes the ends of the banjo/rubber hoses both fuel and return are bad @ the connections...
After week of thinking it over decided to test it again , this time with the fuel cap on.....OH buggars....
I have pressure and blowback... will put the new pump and banjo tubes on when they get here , then see where the fuel tank vent is and if it is plugged.....
Could this be the vent for the street side . but why is it laying on it's side? It should be vertical shouldn't it?
(looks like I have a main tank and the street side fill is another smaller tank that lays on top of the main tank kinda sorta)
'02 40' U320t  4010WTFS Build 6036 1 slide
Motorcade # 17841
SKP 151920
Retired truck driver
 5 million miler
Still have itchy feet for travel

Re: Here I go again...AquaHot still leaking fuel.

Reply #10 –
Quote from: saddlesore –
Could this be the vent for the street side .
but why is it laying on it's side?
It should be vertical shouldn't it?

1. Yes
2. Looks like that is a "T" and it is being used as a return line tap
3. Yes it would work better vertical with the float that is in there.
4. Check the vent hose end for an obstruction like a mud/dirt dauber. Depending on where your tank is mounted the vent hose end should be tied to near the center of your bulkhead. The hose will terminate near (just above) the angle that forms the bulkhead.  On coaches that have the fuel tank in the bay just behind the front tires the hose is on the front bulkhead.  On some of the coaches that the fuel tank is more mid ship they run the vent hose to the rear bulkhead.

Pamela & Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: Here I go again...AquaHot still leaking fuel.

Reply #11 –
The fillers both go to the fuel tank, sometimes the tanks are shaped to clear obstacles. Because the vent is in the center of the tank and the fill ports are lower, it doesn't need to be vertical. To get liquid there would be almost impossible.
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: Here I go again...AquaHot still leaking fuel.

Reply #12 –
AquaHot back together, just trimmed the connection ends with a point file to clean up.... so far is not leaking..... however I have the fuel cap removed to insure that there is no chance of back pressure against the return fuel line.
And will run a 8 hr test with a catch tray.
If all is well will just keep the new pump & banjo tubes for next time.
'02 40' U320t  4010WTFS Build 6036 1 slide
Motorcade # 17841
SKP 151920
Retired truck driver
 5 million miler
Still have itchy feet for travel