Here's a snip of Duner's write up.
New plastic Outdoor Blower is about 1” shorter than the old metal one but the fins are larger. I applied 2-part epoxy (gray glob near hub) over the 2” crack in the center of wheel. The steel insert in the middle of the hub is just pressed on and was loose creating the rattling sound. The failure of the center hub is probably the cause of the re-design to plastic. My theory of the chain of events is the weak press fit at the center loosens, causing wheel wobble, causing the crack in the wheel support, causing the brass bearing
to wear out, causing the motor bearings to wear out. The high ambient heat triggered the chain of events in my case. A second theory is the brass bearing wore out first, causing an imbalance, causing a crack, causing a loose hub, causing greater imbalance, causing the motor bearing to wear out.
27. The new motor p/n 1468a3029 is $171 purchased on 6/13/08 from RV Products. Sales & service 316-832-4357 in Wichita, KS and ask for Keith in Service (he was very knowledgeable). It was $18 shipping UPS Ground to Ohio and arrived 3 days later.
28. The new Outdoor Blower Wheel Package is p/n 1472-1161. Cost is $47.
29. This is the bearing I bought from Graingers. The carrier is somewhat different from the Triangle brand so I just swapped out the metal brackets and used the internal bearing part only. I bought two so I could replace the Indoor Blower bearing at the same time. It was not worn out but it did have 4.5 yrs of service.
30. If I have to go into the unit again, I will replace the two brass bearings with this sealed ball bearing version and it’s only $4 more.
Coleman RVP/Tru Air/Carrier Parts Source Option
32. One of our members has found a money and time saver website to buy parts.
Once you know the required part number, contact this link or use their customer service folks to find it and quote their price. Some parts may have up to a 33% discount. You'll need to give the Customer Service Rep the manufacture name of the major component (ie. Carrier/Coleman), then the Model Number..followed by the company's part number. Many times the part number is on the scan lable pasted to the component or listed on the Operators Parts Manual that comes with the unit.
The Customer Service Rep who has given me great service is Liliana Mera: 800-431-3137 EXT 114. Liliana really knows HVAC parts and clearly has worked this parts supply service company for some time.
ALTERNATE SOURCE FOR COMPRESSOR
From another member of the forum.......
After much searching I found a replacement compressor for the 15,000 btu 120 volt R-22 basement heat pump units.
It's number is RKC5515EXA, made by Tecumseh. I had to call tecumseh's help line to get this number, it's a direct replacement for Rk225AT-26-a4 or a
RK5515S. This is on a 1996 Holiday Rambler Endeavor with 2 basement ac
units that are no longer available and the only option seems to be cutting holes in the roof and mounting roof top units, abandoning the ducted system. finding the compressor is like a miracle if it fixes it.