Coleman Mach 3 vibration

[barron64]

I have a 75 Trade Wind with, what appears to be, an original Coleman A/C unit. Unit worked great earlier this summer when we spent a week in St Augustine FL. Cut the unit on earlier this week and was greeted by a vibration you could feel throughout the camper. At first I thought it was the compressor going bad but further investigation revealed a damaged plastic squirrel cage blower fan that was missing part of a blade. Are parts still available for these old units and can this be repaired without removing the A/C unit?

[StingrayL82]

Try this site: Coleman Air Conditioner Parts and Accessories 1472-1041 4324-3019 6535-3442 9330A3091 1468-3069 6536A3351 6636-3441 6703-3401 6759-3251 62901 80403 62902 65526 65527 63829 65141 64955 16079 85986 86803 66578 60827 66571 64923 Camper Trailer RV Americ

We had an Armstrong in our '71 Sovereign and it would freeze you out of the trailer. Does anyone know what year Airstream switched over to Coleman?

[barron64]

Just watched a youtube video on replacing the fan/blower motor on a Coleman unit and noticed the squirrel cage fan had a missing section of a blade just like what I see onmy fan. It is missing that section to allow you to get an allen head wrench to the lock nut on the fan. So, this afternoon I will pull the top cover off and check the condensor fan to see if perhaps a dirt dobber has built a nest on a blade, throwing the unit out of balance.
The coleman unit will freeze you out as well...I put a digital thermometer in the vent earlier this year and noticed i was getting a 22 degree temp drop from the ambient air in the camper.

[barron64]

Pulled the cover yesterday and sure enough...Had a nice big dirt dobber nest on the outside squirrel cage fan. Removed the nest and cleaned up the mess. Unit nice and smooth again. I wonder what the local RV shop would have charged for this?