Question about Coleman Mach III Air Conditioner

1 Answer


Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 26 Answers

Need to remove unit reseal and reinstall.

Posted on May 10, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Water leak under trailer, looks like box with water lines in and out? what is it called and is it replaceable?

Hi Rodney:
What kind of trailer? Like maybe an RV camper?
If so, it will be your water storage tank.
The seats should lift up so that you can access the tank and determine what the problem is.
Hope this helps.

Feb 23, 2016 | Cars & Trucks

1 Answer

Rv leaking water under neath

The statement is extremely vague. Is it a travel trailer or a motor coach? Motor coach could be dripping condensation from ac while in use. Is it fresh water and only leaks when connected to a hydrant? Does it only leak when sewage is dumped into the black water holding tank? In short, you must determine under what condition the unit is leaking. Then narrow down where it is leaking from and then identify the failed part. RV manufacturers do not publish plumbing diagrams so it is all visual in the diagnostic process.

Jun 16, 2014 | RVs

1 Answer

Recently purchased a 4400W generator to operate travel trailer primarily and on occasion my ac unit. Connected the generator to the travel trailer, then ran the a/c, everything going well, then the circuit...

What size circuit breaker is on the generator that is tripping? You'll need a 20amp for AC alone, then consider other things that are drawing current when RV plugged in like , converter, fridge etc that may be drawing current at same time. Make sure fridge is on propane, as well as water heater if you have electric element option on water heater. AC may only draw 12-15 amps when running if good and clean and wired properly, but will draw 17-18 amps when compressor kicks in. Perhaps generator not designed for that surge?

Aug 28, 2011 | Dometic Rooftop RV Air Conditioner

1 Answer

Leaking at welded fitting on tank? can i jb weld around the fitting

Many have tried same, and only a few have been successful, and at best, only temporarily. Believe it or not, I had 3 do the exact same thing last year, corroded right through the meaty part of the fitting, where you would think would be the last place it would eat through. Being in the RV Service trade, I only want to have to fix it once, and don't want to be responsible for any future floods when away from unit so I replace the tank. I've seen some wild fixes over the years, such as a piece of thick rubber hose over the pinhole with a gear clamp (hose clamp) tightened over it to stop the leak, and it was actually working to stop the leak. Your choice, your gamble, but if you decide to try a quick fix, I'd make real sure I shut the pump or city water supply off when your not going to be close by or in the trailer for any amount of time just in case. Hate to come back from a walk and see water running out the door of the trailer. Good Luck.

Apr 18, 2011 | RTO Atwood Water Heater - 6 Gal LP

1 Answer

Help. Just had seal replaced now water flows in rather than leak. Of course the place that did the repair is hundreds of miles away. How do I tighten seal?

It could be that the installer did not tighten the mounting bolts sufficiently to make a seal. Taking the cover off the unit inside the coach, you should be able to see four mounting bolts that are inserted through springs between their heads and the ac unit.

Those mounting bolts are what pulls the AC unit snug against the gasket. The instructions say not to overtighten them when you first install them because you need to leave space to tighten them later as the gasket ages and loses its "spring". The gasket also, over time, compresses under the weight of the AC sitting on the roof "bouncing" as you drive down the road, losing the seal.

So that you have room to tighten them later, the springs on those mounting bolts should not be compressed all the way. However the bolts also need to be snug enough initially to make the seal and not just barely threaded in. You should not compress the gasket more than 50% on initial install, but it should be compressed a bit.

Try tightening them a bit with a socket wrench (tighten all 4 to an equal depth), then spray the roof area around the AC with a garden hose to see if you still have the leak.

Jun 20, 2010 | Dometic Rooftop RV Air Conditioner

3 Answers

Locating owners manual for 5th wheel & factory appliances

You'll probably find that the actual owners manual for the trailer is just a generic one, that covers many trailers in the fleetwood line-up. I'm guessing your worried about the AC, microwave, water heater & fridge. Get make & model numbers off them & I'll see what I can come up with. As far as items in the trailer other than that or questions, feel free to get back to me with any, and I should be able to explain most if not all. I'll also keep my eyes open at work (RV dealership) for a manual of your year.

Aug 20, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Leaking palomino popup trailer

improper sealing around ac if no ac the molding that runs down the center or around the perimeter of the roof do a search on rv leaks on you tube this will help you on your quest also in my personal opinon i would trade the unit cause two years or water damage you are going to have mold in the unit so just get rid of it

Jul 09, 2009 | Rv Motorhome Dual Co & Lp Gas Alarm...

1 Answer

I have a duo therm brisk air model 57915-001 leak

Could be the drain path is clogged.. Take the cover off & see if you can get it cleaned..

Jul 09, 2009 | Dometic Rooftop RV Air Conditioner

Not finding what you are looking for?
Coleman Mach III Air Conditioner Logo

Related Topics:

90 people viewed this question

Ask a Question

Usually answered in minutes!

Top Coleman Heating & Cooling Experts

Bill Long

Level 3 Expert

588 Answers

Paul Carew

Level 3 Expert

3315 Answers

vance jones

Level 2 Expert

120 Answers

Are you a Coleman Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides