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Old 08-15-2017, 04:59 PM   #1
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2002 Mountain Aire water woes

Hi all,
A Noob MACA3560 owner here - love my coach!

Lately I seem to be having all kinds of water pressure issues. I'm connected to city water supply - and the hose is quite pressurized. However, if I don't turn on the water pump, I don't get any pressure. On top of that weirdness, I get sputtering out of all my spigots and the water pressure trickles away and the water pump keeps turning off.

I thought I'd fill my fresh tank and disconnect from the park to test but I also can't seem to fill my fresh water tank! I turn the valve from ON to FILL and nothing seems to happen. When I kick on the water pump I can hear lots of water moving around and I finally got the water tank to fill to 1/4. When I open the fresh water dump valve (in the large storage compartment by the door) it barely trickles out. At least when I put the valve back to ON with 1/4 tank of fresh water it seems the water sputtering goes away and the water pump stays on. I know I'm not exactly level but pretty close.

I'm at a loss as to why I can't just run off the pressure in the water lines and why I can't fill my fresh water tank unless I turn on the water pump (and even then only to 1/4 - it doesn't seem to go any higher)

Might my ON/FILL valve be screwed?

Would it help to completely drain the lines and refill?
(and exactly how do you do that?)

How do you get to the water pump? It looks like it's behind the water closet, behind the black tank - or at least along side it - but I don't see how to get to it...

Also, the water filter seems like a possible candidate for my problems too but when I look at it, it doesn't seem like it is going to be very cooperative in letting me just twist it open or however it is done.... I hit the red button on top and water flew up out of the top of it... I'm guessing that's ok but it sure doesn't want to unscrew without me putting some serious force behind it and probably breaking something.... I don't see where the water filter can be bypassed either :(

Looking for any and all advice for my sputtering spigots/fresh tank filling issue!

I greatly appreciate it!! (and my wife even more so!! LOL)
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Old 08-16-2017, 08:32 AM   #2
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Check the screen(s) on the line in from the spigot? I thought I struck gold when I looked at mine. Had to replace the main one and the small ones on each faucet.
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Old 08-16-2017, 08:38 AM   #3
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To open the filter canister you have to bleed off all the pressure in the system. You may need to find a filter wrench. Rig should have come with one but the previous owner probably kept it.
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Old 08-16-2017, 09:07 AM   #4
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Quote:
Originally Posted by RKins View Post
Check the screen(s) on the line in from the spigot? I thought I struck gold when I looked at mine. Had to replace the main one and the small ones on each faucet.
Thanks for the info!
Screen is clear on the main line in. Are there others?
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Old 08-16-2017, 09:09 AM   #5
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Originally Posted by Mr_D View Post
To open the filter canister you have to bleed off all the pressure in the system. You may need to find a filter wrench. Rig should have come with one but the previous owner probably kept it.
ah! That makes sense! Thanks for the info...

I found what looks like a big white filter wrench but the way the filter is mounted, I can't get it to the top to get a grip on it... looks like I might have to unmount it from the side wall.... ug....
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Old 08-16-2017, 05:23 PM   #6
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Welcome to the forum.
Should be able to move filter and move wrench up from bottom of filter.
Also check the valves from the fresh water tank and make sure the valves are in the direction of the pipe, you have a filter on pump also that could be plugged.
The city water valve needs to be closed for any water to flow from pump or the city water direction through city water valve.
Here is a link to different water systems that you can input your coach and year which may show you your plumbing system if you change the search information.
Your water pump maybe in a bay next to your water heater up to your right, you have to look inside with a flashlight to turn the water valaves on your by-pass valves for your water heater and there should be a plate on wall above the opening with the positions to open the water flow.
Number 2 in this link will show the water valves of water heater.
We also have a TSB LINK that will give you info on your coach for brochure, owners guide and other needed info.
Below in my signature are links to other info for your Newmar.
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Old 08-16-2017, 07:59 PM   #7
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Quote:
Originally Posted by 007";3755956]Welcome to the forum.
Should be able to move filter and move wrench up from bottom of filter.
Also check the valves from the fresh water tank and make sure the valves are in the direction of the pipe, you have a filter on pump also that could be plugged.
The city water valve needs to be closed for any water to flow from pump or the city water direction through city water valve.
Here is [B][URL="https://www.google.com/search?q=plumbing,+city+%26+fresh+water+by-pass+valve+for+rv&hl=en&qscrl=1&nord=1&rlz=1T4RNTN _enUS373US374&biw=1325&bih=611&site=webhp&tbm=isch &imgil=d6wHMHHPqJqoyM%253A%253BxmzQWNniDoHAVM%2 53B http%25253A%25252F%25252Fwww.gagscamperway.com%252 52Frv%25252Fwinterize.htm&source=iu&pf=m&fir=d6wHM HHPqJqoyM%253A%252CxmzQWNniDoHAVM%252C_&usg=__SSbn I42gcb70kAGvjPPvCf-8wXo%3D&ved=0CFEQyjc&ei=SldlVNbPFerasATtjIGoAw#fac rc=_&imgdii=_&imgrc=d6wHMHHPqJqoyM%253A%3BxmzQWNni DoHAVM%3Bhttp%253A%252F%252Fwww.gagscamperway.com% 252Fseasonal%252FWinterizing%252Fwatersystem.gif%3 Bhttp%253A%252F%252Fwww.gagscamperway.com%252Frv%2 52Fwinterize.htm%3B558%3B453
a link[/URL][/B] to different water systems that you can input your coach and year which may show you your plumbing system if you change the search information.
Your water pump maybe in a bay next to your water heater up to your right, you have to look inside with a flashlight to turn the water valaves on your by-pass valves for your water heater and there should be a plate on wall above the opening with the positions to open the water flow.
Number 2 in this link will show the water valves of water heater.
We also have a TSB LINK that will give you info on your coach for brochure, owners guide and other needed info.
Below in my signature are links to other info for your Newmar.
Thanks for the info!

I think I've got it narrowed down to a faulty check valve on the city water input. I might still have a sticky Fill/On valve as well but replacing the check valve will be the first step...

I'll let everyone know how it goes...

Thanks again!
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Old 08-21-2017, 12:27 PM   #8
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UPDATE: My entire problem was water filter related - Once the filter was pulled out and the canister put back into place - everything was good once again.

Now with a new filter in place - we're back in business!

Thanks for everyone's help!
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Old 08-21-2017, 02:16 PM   #9
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FYI,
The water filters do not last very long.
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Old 08-21-2017, 04:22 PM   #10
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Quote:
Originally Posted by GaryKD View Post
FYI,
The water filters do not last very long.
I had to use this

https://www.amazon.com/TruBuilt-Auto...29-spons&psc=1

the first time I replaced the water filter.
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