Add water to class A while boon docking

[Gdlow]

For some reason the onboard pump works to transport water inside the coach, but won't when trying to use the suction port to fill the water tank from a non pressurized system. Anything I could check to troubleshoot? I maybe doing it wrong...been known to happen:o
Scondly, If I use a portable pump attached to a drill will this fill the tank if set on tank fill on the service panel?
Inquiring mind needs to know...thanks

[MountainAir05]

AS Dutch stated, Also if no wet spots in the compartment then you do not have a leak, just plumb wrong.

[Dutch_12078]

If you can access where the overflow/vent exits the tank, replacing the elbow with a'T' and adding a small vacuum breaker to the top will stop the siphoning.

[Gdlow]

Bill.Satellite wrote:
It seems like it would be a lot easier to fix the siphoning issue!

taking it to a shop, they want to pull the tank, etc...not cheap especially when dry camping is not the norm.

[gvisnic]

I use a 12v marine pump. I wired a switch to turn on and off and wires clip onto my 12v house batteries. Run a short piece of hose into 5 gallon container and regular water hose to fill location switch to fill tank or connect to city water. Takes just a couple minutes to put in 5 gallons. Just used this week

[richclover]

Gdlow wrote:

gbopp wrote:
I didn't realize some RV's had suction ports to draw in water.
Don't you have a regular gravity fill where you use a hose to fill the FW tank? That would work with a drill powered pump.

Nope...No gravity fill.

No gravity fill on my new 5’er either. With 40 gallons useable I needed a way to add more.

I cut an older 25-ft hose in half, added fittings from Ace Hardware, found a 12-v pump on Amazon and added a length of wiring and a plug that fits the solar panel plug. Hooked up to the city water input, with valves set correctly, it’ll transfer a 6-gl jug to the tank in a couple of minutes.

I’m wondering where you’re losing your water?

[Bill_Satellite]

It seems like it would be a lot easier to fix the siphoning issue!

[Gdlow]

bigred1cav wrote:
If you are running out of water in your potable water tank, where are you disposing of your waste water?

Ihave always had a siphoning effect while driving down the road, so depending on distance and starting with a full tank, I end up losing anywhere from 1/3 to 1/2 tank...so need to fill when we get there and be there for a few days...

[bigred1cav]

If you are running out of water in your potable water tank, where are you disposing of your waste water?

[Gdlow]

Dutch_12078 wrote:
On our current and previous motorhomes, the way to suction fill the water tank is to set the valves just as you would for winterizing from a jug, except set the "City/Fill" valve to "Fill" instead of "City".

I will check this out...again..I have done it before years ago...but memory is not as good...:h

[Gdlow]

wa8yxm wrote:
The suction port (if you have owe) if for pink stuff in the winter.. Often there is no path from the on-board pump to the tank (easily fixed but can cause issues later)

Suggest a 2nd pump for the transfer. Several kinds out there or you can just use another RV pump not that expensive.

thanks...I will try a small one...as I don't boondockl often

[Gdlow]

MountainAir05 wrote:
Yes it will suck water from a say 5 gal can to your tank. Have done it in the past when we had a tank issue and needed to get water back in the system but no city pressure line.

thanks...I will try this

[Gdlow]

gbopp wrote:
I didn't realize some RV's had suction ports to draw in water.
Don't you have a regular gravity fill where you use a hose to fill the FW tank? That would work with a drill powered pump.

Nope...No gravity fill.

[Dutch_12078]

On our current and previous motorhomes, the way to suction fill the water tank is to set the valves just as you would for winterizing from a jug, except set the "City/Fill" valve to "Fill" instead of "City".

[wa8yxm]

The suction port (if you have owe) if for pink stuff in the winter.. Often there is no path from the on-board pump to the tank (easily fixed but can cause issues later)

Suggest a 2nd pump for the transfer. Several kinds out there or you can just use another RV pump not that expensive.