What i normally do is get a hacksaw blade and try and cut some of the gasket and then get a flat bar under the ac between the roof and then pry up and it should come free.
How to remove ac unit from roof.
I use sealer between the gasket roof when reinstalling it.
Use a funnel to pour a warm water and bleach mixture into the line.
The new unit is much quieter and moves much more air.
Keeping your rooftop ac unit clean and functioning duration.
The gasket is compressed using 3 4 bolts i e.
At least the roof top portion of the unit.
It weighs 100 lbs so 2 people will be needed to move it.
Repeat up to three times to clear the clogged line.
Removing the roof air conditioning.
I removed those and the whole cover slid off in one piece.
The first thing you ll notice is four big phillips head screws with black washers under them.
After you get the air conditioner free from the roof it is time to lower it down off the roof.
Remove the mounting bolts as well as the screws and bolts that secure the air conditioning unit s cover.
First remove the four screws that hold the cover on the air conditioner.
Bleach will kill the algae and water will flush it out.
Place the new gasket and reassemble the rooftop unit wiring and plastic housing.
Clean the indoor line at the air conditioner condenser unit.
I replaced the old dometic unit with this new dometic duo therm brisk 2 air 13500btu.
The freon lines have to be emptied and evacuated re routed and reconnected then vacuum evacuated again then only a certified a c tech can legally buy enough freon to recharge the unit and they ll have the proper tools to do that.
Remove the roof top air conditioner cover.
Shimmy the whole ac cover off in one piece.
Your talking about moving the condenser unit from the roof to the ground.
Use a wonder bar or putty knife to pry loose the caulk and or butyl tape that was used to make a watertight seal on the air conditioner.
I ve used a utility knife to cut the gasket making it easier to remove the ac unit.
The mounting bolts which you can easily access from the interior of your rv.
Removing the main unit from the roof.
If the gaskets have been there for a long time they will be stuck to the roof.
Please review my reroof summary the link is shown below.
Here s a look at the inside of a coleman rv air conditioner.
Removing the roof air conditioning.
When installing the best rv ac unit on rv it s usually sealed to the roof with a sponge rubber gasket which is compressible and requires maintenance.
Remove the air conditioning unit placing it on its side and take out the sponge rubber gasket.
These hold the cover in place over the rooftop ac unit.