A/C started making rough noises today. What should I check?

I spliced mine with water tight connectors under the shroud on the roof. The wires that came on my motor were about 18" but not long enough to splice inside the unit.
I believe colors are universal. You'll see when you get it. Wires are hot, neutral, ground, low speed and high speed.
All I can say is I connected color for color and it works. Good luck.

When splicing wires like this where should I cut them in terms of length? Close to the harness? I'm also wondering if I need to solder (which I've never done). I really hope the wire colors are the same! I don't know what I'd do if they aren't. Motor has been shipped though so I'm trying to get myself prepared. Thanks everyone.

That looks identical to the one I just replaced. Swap out was easy for me. Be prepared to splice 5 wires from the motor to the harness. Wire colors were the same on my unit. All you need is allen wrench set, wire nuts, electrical tape, wire strippers/cutters, small nut driverset and some mechanical ability. Took me about 1/2 hr to change it.

Oops I realized part of the label isn't shown in that picture. I think I found the right replacement motor though. Looks like the original motor part number is 7184-0156 and on the Amazon reviews show that this is a viable replacement. I just want to make sure this is the right thing to replace and that I will be able to do it by myself. I've never done anything like this before but I'll take my time, just need a little guidance :).


http://www.amazon.com/gp/product/B007VJUB9S?sa-no-redirect=1&pldnSite=1

The first picture is a closeup of the motor's label, there are some more pictures of the whole unit on the link below. I'm trying to get by without having to replace the whole unit. At this point it just seems like it's motor or bearings? I am not knowledgeable with this kind of stuff. Again, the shaft that's holding the fan is wobbling/vibrating so much that I cannot run the unit. There doesn't seem to be anything wrong with the fan itself. Thanks so much for the help.

The make of the A/C I believe is a Coleman. My thermostat says Coleman-Mach on it. I'm in a 2001 Jayco Eagle fifth wheel.




More images here:
http://imgur.com/a/2FbzO

Even if the fan motor, bearings, shaft, indoor blower and outdoor fan are all "in balance" the assembly's probably on rubber mounts to quiet it still further. When you say "wobble" is it just the shaft OF the motor or the motor itself? They don't wear bearings out, as much as bearings go dry or get contaminated. If it has knocked out a bearing, I'd guess some deposit (like bug nests) or damage (like bad fan hub or lost fan blade) has caused it.

The compressor is also on rubber mounts and the compressor in our old Coleman got out of one of them. I got it back and figured the repair wouldn't last but we never had the problem again.

Yes, if motor shaft is loose where it enters the motor bearings, you probably need a motor. We had one get "sticky." No matter how I cleaned and lubed it, the thing'd stick after running a few hours. There IS a thread here where somebody replaced the sleeve bearings these motors come with, with ball bearings. That really sounds good, but sleeve bearings (simple bushings) are inherently quieter than ball bearings. So the manufacturers get Quieter AND Cheaper all at once. I ended up replacing ours, cost around $100, no labor charge since I do all this stuff myself.

What's Make/Model of this A/C? can you post a picture of the label on the motor?

I was able to get up there today when the rain let up and it's not looking as easy as I suspected it might be. There are no nests are any obstructions. The noise seems to be coming from the vibration that the fan is giving off, although it doesn't seem lose in any parts. The rod that the fan is secured to that goes into the fan motor starts to wobble and the sounds gets louder the longer it's on. Is this an indication of a bad fan motor?

WD40 strikes again. I wish I had had stock in that company.
Better to spray Silicone or Lithium and use WD40 to loosen bolts or dry wires in your engine (WD = wire drier).

Thanks for the replies! I'll be working on it today whenever I can. Great timing for 3 days worth of storms in the forecast! :)

Aside from nests, another thing to check is the fan motor. Mine starting making growling sounds when running. I determined bad bearings in the motor.
I bought a new motor (did a part # search online) from Amazon for $115. Easy install, now is quiet.