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Old 08-26-2008, 08:11 PM   #1
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1972 31' Sovereign
pinedale , Wyoming
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armstrong ac condensor fan

I have a 71 excella with a siezed condenser fan motor, I found replacement parts online but the motor was 290.00 and the fan blade was 129.00.
my armstrong ac model# is tr21-12.

If anyone knows a good vendor to buy from it would be greatly appreciated.
not that I really need air here in wyoming but I like to have things working.
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Old 08-26-2008, 08:24 PM   #2
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I am shocked at those prices too.
Years back someone on here posted some crossover info for Armstrong components. Actually I think there have been several threads that addressed different components.
Now finding those posts in this swamp of rhetoric and convoluted thread titles among the half a million plus posts aint gonna be much fun. That is if they still remain and if my memory serves me correctly...which it doesn't always.
Seems that Grangier or some such had an acceptable fan replacement, that maybe you'd have to cut (shorten) the shaft or something.
As for the fan blade my thinking is that there must be something out there that would suffice as replacement not necessarily the exact. What is wrong with your blade?
Is it encircled with ring type?
Also often folks replace their old Armstrongs, sadly they usually toss them to the ground. but maybe that will be a source for the blade at least.
Also check with Colaws which someone else will have to furnish you the address of.
Good luck.
Im like you, I want it in working order even if I don't often use it.
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Old 08-26-2008, 08:25 PM   #3
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I had the same trouble with our condenser fan (74 Sovereign). What I wound up doing is removing the motor from the a/c unit, removing the bolts that hold the assembly together, replacing the disintegrated thrust washer at the bottom that caused the motor to drop too low, causing the bind, reassembled the motor using lengths of allthread and nuts top and bottom, and replaced the motor in the a/c unit.
We've been living in the trailer since, with the a/c going almost daily, with no further trouble. a 50 cent washer, a bag of nuts for $.99, and a stick of allthread for $6 was much cheaper than a new fan motor.
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Old 08-26-2008, 08:52 PM   #4
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1972 31' Sovereign
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Quote:
I had the same trouble with our condenser fan (74 Sovereign). What I wound up doing is removing the motor from the a/c unit, removing the bolts that hold the assembly together, replacing the disintegrated thrust washer at the bottom that caused the motor to drop too low, causing the bind, reassembled the motor using lengths of allthread and nuts top and bottom, and replaced the motor in




that is worth a try, sounds like the same problem I'm having
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Old 06-27-2010, 09:21 AM   #5
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I have an Armstrong TR 21 12 on my 27 ft 1972 international does my unit use the same thrust washer? I have lube shaft on the condenser fan and in will spin well for a few hours then stiffen up again and shut down the unit again. Any help on fixing or part number of a replacement fan from some where like granger would be greatly appreciated.

Steve
TR
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Originally Posted by overlander63 View Post
I had the same trouble with our condenser fan (74 Sovereign). What I wound up doing is removing the motor from the a/c unit, removing the bolts that hold the assembly together, replacing the disintegrated thrust washer at the bottom that caused the motor to drop too low, causing the bind, reassembled the motor using lengths of allthread and nuts top and bottom, and replaced the motor in the a/c unit.
We've been living in the trailer since, with the a/c going almost daily, with no further trouble. a 50 cent washer, a bag of nuts for $.99, and a stick of allthread for $6 was much cheaper than a new fan motor.
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Old 06-27-2010, 01:47 PM   #6
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Bump any one else have this issue
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Old 06-27-2010, 06:29 PM   #7
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jdnelson

This is a good learning experience for me. There is a commercial motor service facility that has been around here for decades. I know they have a vast selection of fans and squirrel cage blowers as well a small motors that these units use.
If you could furnish me with some details maybe I can do you some good.
Manufacturers part numbers would be to much to hope for, but it would make life easy.
I need the diameter and length of the motor.
I need the speed (evaporator motor is multispeed) of your motor and the direction of rotation.
I need the length of the fan shaft and diameter.
I need the diameter of the fan and number of blades.
With this information I can check to see if he has anything available or that he can get for a reasonable price.
This company was very valuable in supplying me parts to get my daughters Armstrong going again.
Beginner
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Old 06-28-2010, 09:06 AM   #8
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I am still on vacation I will plan to take motor of tomorrow. Thanks for the offer beginner

Any one else replace condenser motor on this vintage Armstrong
If I did decide to replace is the low profile penguine a straight forward swap? Does it use same size hole? Amy other gotchas in upgrading to a 15000 penguin
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Old 08-10-2011, 01:22 PM   #9
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Anyone have a current part number for a replacement blower motor for a armstrong ac model# is tr21-12. My current GE blower fan model number is 5KCP39EG9396S.
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Old 08-10-2011, 02:59 PM   #10
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Quote:
Originally Posted by loechli View Post
Anyone have a current part number for a replacement blower motor for a armstrong ac model# is tr21-12. My current GE blower fan model number is 5KCP39EG9396S.
Forums member jmpratt recently rebuilt his Armstrong TAC-110-1 and posted a lot of detail about it in the thread I linked, including the fan motor he used and what you'd need to use a different fan motor if you can't find the direct replacement.
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Old 08-10-2011, 03:11 PM   #11
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Thanks for the link.

I had already seen this very detailed post,
His AC is one generation older than mine and is quite different, still looking for someone that has found a replacement 2 speed blower motor for a armstrong TR 21-12

Steve
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