Jayco RV Owners Forum
 


Reply
 
Thread Tools Display Modes
 
Old 06-24-2015, 10:17 AM   #31
Senior Member
 
Join Date: Sep 2013
Location: South Texas
Posts: 4,190
Quote:
Originally Posted by 33 RLDS View Post
I have the 2 tanks you speak of with my advertised 86 gallon capacity but I have 2 overflow vent tubes. I assumed 1 for each tank?
+1

I have 2 separate and distinct overflow hoses. One goes to each tank, and when the tanks are full, water comes out of BOTH tubes for what I consider to be a long time after I've stopped filling. And that's just sitting in the driveway not moving...

Typically during travel, I only fill to about 1/3 tank (measured and timed to be 25 gals actually, used for "incidentals" on the road), and I get no siphoning that I'm aware of at that level.

On a side note, my problem is that my water pump's pick up hose must be curled up or something because I need to have A LOT (IMO) of water in the tanks for the pump to pick up the water. Seems to me the pickup hose should be laying flat against he bottom of the tank... It hasn't become enough of an issue yet for me to get crazy about fixing it.
__________________

__________________


2014 Jay Flight 28 BHBE
2015 RAM 2500 6.4L HEMI, Tradesman 4x4, 3.73
Blue Ox SwayPro (BXW 1503)

Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!
Camper_bob is offline   Reply With Quote
Old 06-24-2015, 11:38 AM   #32
Senior Member
 
oldmanAZ's Avatar
 
Join Date: Dec 2014
Location: AZ
Posts: 7,055
Quote:
Originally Posted by dewey02 View Post
snip...
when you arrive at your site, it is important to RE-OPEN the valve on your overflow. Again, it is that second FW tank that needs to get air as your water pump draws water from your tanks. Because the tanks are full, the hoses between the two tanks are filled with water and air cannot get to the second tank other than via the overflow. It probably will not actually hurt anything, but I forgot to open them up recently, and when we were finally leaving our site and I did open the valve, there was a couple of minutes of gurgling, as the 2nd tank sucked in air, so I definitely had negative pressure in that 2nd tank.
Thank you. You read my mind. I was going to ask about opening the overflow for venting... now I don't need to.
__________________

__________________
Sherm & Terry w/rescues Eydie (min Schnauzer) Steve RIP (std Poodle)
2015 Jay Flight 27RLS (Camped: 102 nights '15, 90 nights '16, 70 nights '17 so far)
2006 Ford F350 6.0 PSD, Lariat, 4WD, CC, LB, SRW, auto., Camper pkg.
oldmanAZ is offline   Reply With Quote
Old 06-24-2015, 07:57 PM   #33
Senior Member
 
Join Date: Feb 2012
Posts: 923
Quote:
Originally Posted by Camper_bob View Post
+1

(snip)

On a side note, my problem is that my water pump's pick up hose must be curled up or something because I need to have A LOT (IMO) of water in the tanks for the pump to pick up the water. Seems to me the pickup hose should be laying flat against he bottom of the tank... It hasn't become enough of an issue yet for me to get crazy about fixing it.
I do not believe there is a pickup hose inside your FW tank, and therefore it cannot be curled. There is simply an hose fitting cut into the SIDE of your FW tank and an external hose that connects from there to your FW pump.

The problem you are experiencing also results from a design flaw on the Jayco water tanks. I had a leak coming from the underbelly, so I pulled it down to find and fix the leak. That was easy - tightening a hose clamp, but I also found that the FW tanks were bulging severely between the three metal straps that held up each tank. Also I noticed that the FW pump draws from the side of the tank, not from the bottom. So here is the situation you may have. You put in 25 gallons of water, that is 12 gallons per tank (if you have 2 tanks), once they equalize. With the bulge in the tanks, much of that water is below the opening where the pump draws water. So you are hauling a bunch of water that you will NEVER have access to!

I went to Home Depot and purchased some additional thick steel strapping (matching what was already on the tanks) and added two additional supports under each water tank where the bulging occurred. If I was more industrious, I would have changed the FW pump intake's position from the side of the tank to a low point on the bottom, but I didn't want to put more holes in the tank, so I will just accept it as it is.
dewey02 is offline   Reply With Quote
Old 06-25-2015, 08:43 AM   #34
Senior Member
 
Join Date: Sep 2013
Location: South Texas
Posts: 4,190
Quote:
Originally Posted by dewey02 View Post
I do not believe there is a pickup hose inside your FW tank, and therefore it cannot be curled. There is simply an hose fitting cut into the SIDE of your FW tank and an external hose that connects from there to your FW pump.

The problem you are experiencing also results from a design flaw on the Jayco water tanks. I had a leak coming from the underbelly, so I pulled it down to find and fix the leak. That was easy - tightening a hose clamp, but I also found that the FW tanks were bulging severely between the three metal straps that held up each tank. Also I noticed that the FW pump draws from the side of the tank, not from the bottom. So here is the situation you may have. You put in 25 gallons of water, that is 12 gallons per tank (if you have 2 tanks), once they equalize. With the bulge in the tanks, much of that water is below the opening where the pump draws water. So you are hauling a bunch of water that you will NEVER have access to!

I went to Home Depot and purchased some additional thick steel strapping (matching what was already on the tanks) and added two additional supports under each water tank where the bulging occurred. If I was more industrious, I would have changed the FW pump intake's position from the side of the tank to a low point on the bottom, but I didn't want to put more holes in the tank, so I will just accept it as it is.

This is good info! Thanks!

The tanks really don't bulge that much, but it is highly annoying hauling water I can't access.

I'm going to have to look again, but last time I was down there, I could identify all but one of the hoses that I could see around the tank. The only spot I cannot see is the top of the tanks. So I assumed that a pickup line went from the pump (in the cabinet immediately above the tanks) and dropped down into the top of the tank since I couldn't see any other hose going up (except for one that is definitely not the line to the pump, but I still can't tell you what it is ).

Anyway, I'm going to make a more concerted effort to find out what's going on with my tanks next time it's in the driveway.
__________________


2014 Jay Flight 28 BHBE
2015 RAM 2500 6.4L HEMI, Tradesman 4x4, 3.73
Blue Ox SwayPro (BXW 1503)

Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!
Camper_bob is offline   Reply With Quote
Old 06-26-2015, 08:48 AM   #35
Senior Member
 
Join Date: Feb 2012
Posts: 923
On my unit, the FW drain hoses and the pump intake hose are connected.
The connection at the tank for the FW drain hose and the FW pump hose are one and the same. And the pump only draws directly from Tank 1. As it empties, the tanks equalize and water from Tank 2 tranfers by gravity to tank 1. So the height of the larger plastic hoses that equalize the two tanks is yet another factor in determining how much water remains in the tanks that cannot be utilized.

Sometimes it is better to not know all this and think that I really have 90 gallons of water available to me for use. In reality, I am guessing that I probably have somewhere around 70 gallons available for my use when all the tanks are full. Just as an aside, Jayco counts the water in your water heater as part of the total water available. In fact, while there may be 6 or 8 gallons of water in the hot water tank, that amount is NEVER available to you, because the system works on having a full and pressurized flow in your pipes. Therefore, the water tank must be full in order for you to get hot water out the other end. If your FW tank is empty, your hot water tank will still be full, but there will be no pressure to push out that last 6-8 gallons. The only way you could access it is by removing the drain plug from your hot water tank and catching it as it drains.
dewey02 is offline   Reply With Quote
Old 06-26-2015, 09:16 AM   #36
Senior Member
 
Join Date: Sep 2013
Location: South Texas
Posts: 4,190
Quote:
Originally Posted by dewey02 View Post
On my unit, the FW drain hoses and the pump intake hose are connected.
The connection at the tank for the FW drain hose and the FW pump hose are one and the same. ...snip
I thought this might be the case. I think you're talking about the hose I can't figure out. I wish I had taken a pic of it at the time... Trailer's in storage, so I can't go look...

Let's see if I can describe it: The bottom of tank 1 has a drain hose that runs to the valve at the LP drain for the tanks. As it runs past tank 2, there is a T and a hose running up into the trailer. I thought perhaps this was the pickup for the pump (odd as it was, I thought it was plausible). This hose has some wiggle to it, so I grabbed it and started wiggling and pulling on it. I asked DW to go look inside by the pump to see if she could see any hoses moving and she said "no". So I just said "oh well, I dunno". Maybe next time I'll ask her to move the hose while I go and look...

So here's a thought: Since we very rarely need full tanks, but we would like to have better access to the water we DO carry, I wonder if Tank 2 could/should be isolated? I bet it wouldn't be too difficult to put a valve in the equalization hoses so you can keep water from flowing into the second tank, but you could open the valve when you needed the capacity?
__________________


2014 Jay Flight 28 BHBE
2015 RAM 2500 6.4L HEMI, Tradesman 4x4, 3.73
Blue Ox SwayPro (BXW 1503)

Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!
Camper_bob is offline   Reply With Quote
Old 06-26-2015, 06:53 PM   #37
Senior Member
 
Join Date: Feb 2012
Posts: 923
Quote:
Originally Posted by Camper_bob View Post
I thought this might be the case. I think you're talking about the hose I can't figure out. I wish I had taken a pic of it at the time... Trailer's in storage, so I can't go look...

Let's see if I can describe it: The bottom of tank 1 has a drain hose that runs to the valve at the LP drain for the tanks. As it runs past tank 2, there is a T and a hose running up into the trailer. I thought perhaps this was the pickup for the pump (odd as it was, I thought it was plausible). This hose has some wiggle to it, so I grabbed it and started wiggling and pulling on it. I asked DW to go look inside by the pump to see if she could see any hoses moving and she said "no". So I just said "oh well, I dunno". Maybe next time I'll ask her to move the hose while I go and look...

So here's a thought: Since we very rarely need full tanks, but we would like to have better access to the water we DO carry, I wonder if Tank 2 could/should be isolated? I bet it wouldn't be too difficult to put a valve in the equalization hoses so you can keep water from flowing into the second tank, but you could open the valve when you needed the capacity?
Yes, I suppose that you could do that. However, realize that the equalization hoses are much larger than the hoses that draw water from your tanks and connect to the FW drains. If I remember correctly, it is exactly the same as the hose that goes from your gravity fill to your FW tank.

So it looks like one of these and it is located on the opposite side of your FW tank from where your gravity fill is. It might be difficult to find a good fitting that would shut off a hose of that diameter, but I'm sure you could engineer something.

__________________

dewey02 is offline   Reply With Quote
Reply

Thread Tools
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


» Virginia State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 04:25 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.