We have a 07 Winn Voyage 38J with a 2 ton Coleman central air A/C unit mounted at basement level, model 6535-871 It has a problem when the compressor cuts off the fan hits something a few times before it stops. It makes a racket and I worry that it may be damaging something - what's it hitting?
So I need to remove the unit to open it up and check it out. There are no service access panels available in its present location. I checked internet and found a great service manual but it is silent on the installation, says that's unique to each application and left up to the coach builder.
Best I can tell there are two big bolts in steel rails underneath and somehow you remove and lower the unit to access. The electrical conduit even appear to have a service loop to make this possible. The output and return air ducts appear to attach to the unit with flanges that separate somehow.
Does any one have tips/instructions how to do this or know where I should look?
You will have to remove those bolt under the AC unit and then the cover should lift and then you can support it in a "open" position, then remove the screws around the flange and it should pull away from the A/C unit. Last there will be some screws at the top of the a/c unit that hold it back, take those out and then slide it out (you will need help and a table to put it on). The electrical cord should have enough slack to pull the unit out beyond the RV. I have a pdf version of the removal and if you search IRV2 you should be able to find it I believe the guy's name is "Duner" who wrote it. If you can't find it send me a message and I will send the .pdf to you.
I'll second Gonnacall's advise, i downloaded Duner's pdf file when I pulled the unit from my Itasca Suncruiser and it really helped. We pulled the unit, diagnosed the problem, went to town for parts and had the unit back in and running in 4 hours.
Wanted others to benefit from my findings, thanks to the great reference above I removed the A/C unit without any problems. It is very heavy so be prepared!
I discovered that my problem was the fan cage had moved on the motor shaft hitting the housing. I had to disassemble to get to it but the repair was just repositioning, tightening the set screw and added a drop of locktite.
The larger benefit is by having the unit out I discovered that there was lots of lint and dust on the intake evaporator coil. This is despite using and maintaining the motor home's air filter. I used coil cleaner to clean this up. Further I used window weather stripping and made a gasket for the motor home air filter to try to prevent lint and dust from sneaking through.
If you feel your unit is not cooling like it should and if the output is the proper temperature then perhaps you have an air flow problem like ours.
Really appreciate the information this website provides. It's tough maintaining our motor home and this site provides excellent guidance to help me.