Mountain Aire rooftop drains

[troyrice76]

There are drains on the four corners on the roof of the coach however a few of them are clogged. I was told to use an air compressor to shoot air up to clear the clog. Where are the drain lines under the coach. What should I be looking for?

Thanks,

T

[danleininger]

On mine there's a grate (or a cover with lots of holes) that covers the roof drains at each corner of the roof under the awnings. Unless you are able to remove this grate compressed air wouldn't help. I would suggest something like a long (maybe 12") pipe cleaner to run thru the holes in the grate and hopefully into the drain tube as well.

At the bottom of the MH you should find a black painted pipe that has a flat rubber attachment similar to the one used for the Fresh Water Tank Overflow.

Clean the upper grate and run water in it. Then squeeze the lower rubber part, causing it to open and see if water begins to flow. I've had the rubber drain get plugged.

If all this fails...remove the rubber piece that's held on by a zip tie and hold a wet vac hose on the pipe to "suck" the junk out.

Good luck!!!!

[clnhse]

I have a 11 model MA. There are two drains on the front. One on each side. The rear has both drains on the pass side. I found out the factory used a long screw to hold the rubber duck bill on the drain pipe. I was always having problems with the drains clogging. The long screw holding the rubber duck bill was holding debris . The rear pipe had over two inches of silt plugging it up. I removed the screwed and rubber duck bill and have not had a problem since.

The start of my investigation was my air filter got wet. It appeared the roof drains were plugged and I was driving in the worst rain ever. I climbed an overpass and all of the water came off of the roof and down the rear of the rv into the intake. There is a duck bill in the intake system to handle water but that too was clogged with bugs and a long screw. I was not able to remove the screw because of the way it was installed to I opened up the duck bill.

[joelyn5]

If you don't want to climb up on the roof, sometimes you can clear the drain by sticking a garden hose up the duckbill, clamping you hand around the outside of the duckbill and turn on the water and back flush the drain, if you have a ladder you can periodically reach up to the roof drain and pull the crud off the inlet.

[Zak]

I have a 2014 MADP... Use compressed air on the rubber duck bill outlet at about 20 to40 psi. I just cleared a bunch of tree gunk and small debris out of one of ours doing this. Clamp down around the air gun nozzle inside the duck bill with your hand...it forces the air up to unclog the junk. You'll know you did it Correctly when a bunch of water shoots down your arm!

[troyrice76]

Shot air up all 4 they are clear now and now there is no more AC condensation water running down the side of the coach.

[danleininger]

Ain't these Forums great!!!!