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07-26-2002, 03:46 PM
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#1
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4 Rivet Member 
Join Date: Feb 2002
Posts: 334
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Removing the Armstrong AC unit
Removing the Armstrong AC unit was a slow task. It takes time to dig out 150 sheetmetal screws. This unit was mounted with lots of screws and more roof caulking. The heat gun softens the caulking enough to remove the coating over the screws. The good old DeWalt drill/driver removed the screws quickly. There are also wires to cut for the t-stat control and the romex wiring for AC power. It was a bit of a chore to slide the unit off the roof on a piece of 1/4 inch plywood down a ladder. The new unit, a Coleman, is a little heavier, so some structual engineering is needed. The span on our '79 Land Yacht 31 ft is 43 inches between ribs. My first thot is to brace above roof line. The interior ceiling is very fragile. The support material will be some 1 inch square tubing with 1/8 inch wall thickness. I just love a good challenge.
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07-27-2002, 07:48 AM
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#2
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Rivet Master 
1965 20' Globetrotter
Currently Looking...
Houston
, Texas
Join Date: Mar 2002
Posts: 1,002
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Pay attention here folks. Frank always does it right.
Most people and even many repair centers would have just slapped the new unit on without even thinking about a weight difference.
Good luck Frank and keep the pictures coming.
-BobbyWright
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BobbyW
AIR# 123
-"You want to make it two inches - or, if you're working in centimeters, make sure it's enough centimeters for two inches."-Red Green
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07-27-2002, 10:34 AM
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#3
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4 Rivet Member
Join Date: Feb 2002
Posts: 334
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Armstrong AC parts
Free parts to anyone needy. Unit removed from 1979 Airstream
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07-27-2002, 10:39 AM
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#4
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4 Rivet Member
Join Date: Feb 2002
Posts: 334
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Wiring Diagram/Drawing AC Unit
Electrical drawing for Armstrong Roof AC unit.....
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07-27-2002, 10:44 AM
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#5
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4 Rivet Member
Join Date: Feb 2002
Posts: 334
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AC removed view
Roof construction and rib inside view
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07-27-2002, 11:05 AM
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#6
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Just a member
1978 28' Argosy 28
Lutz
, Florida
Join Date: Mar 2002
Posts: 4,549
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Frank,
Iwant it! I will pay to get it. Let me know. Mine is about to disintergrate.
Also based on the wiring diagram yous had a heat strip and a wall mounted thermostat? Cool!
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Brett G
WBCCI #5501 AIR # 49
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1978 Argosy 28 foot Motorhome
Wise men talk because they have something to say; fools, because they have to say something. -- Plato
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07-27-2002, 12:04 PM
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#7
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New Member
Join Date: May 2002
Posts: 2
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Armstrong A/C Shroud
We are looking for TR21-12 Shroud. This fits 73 Overlander. Have been quoted $375 from a parts place, but we can't afford that! If anyone has one they would like to sell, resonable, we'd like to buy it.
Dana Kelley
jckelley@flex.net
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DSK in TEXAS
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07-27-2002, 01:47 PM
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#8
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Still Working
1994 36' Classic 36
North Charleston
, South Carolina
Join Date: Jul 2002
Posts: 1,686
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Selector switch from AC unit
I am looking for an OEM selector switch. mine does not seem to be original equipment.
I am looking for the selector switch that has about 7 or 8 positions on it like High fan, Low fan, high cool , low cool , heat, etc...
This switch is on the left side of the unit facing the control panel.
My switch only has four positions but thew faceplate has many more positions identified on it. I have to put the switch in the "heat" position for it to cool, Hmmm?
Any way I will be happy to pay fro the postage and shipping of the unit.
Thanks,
Ken
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07-27-2002, 04:32 PM
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#9
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4 Rivet Member
Join Date: Feb 2002
Posts: 334
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More pics of AC to come
Compressor motor failed all else worked OK......All the components to a good home.....
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07-27-2002, 06:51 PM
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#10
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Rivet Master
1965 20' Globetrotter
Currently Looking...
Houston
, Texas
Join Date: Mar 2002
Posts: 1,002
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Frank;
Before you install the new unit, could you take a few pictures of it without the shroud on it. These would be great reference pictures for the Forums in the future.
Some pictures of the old unit without the shroud would be great also.
-BobbyWright
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BobbyW
AIR# 123
-"You want to make it two inches - or, if you're working in centimeters, make sure it's enough centimeters for two inches."-Red Green
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08-02-2002, 10:11 AM
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#11
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3 Rivet Member 
Join Date: May 2002
Posts: 121
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Shroud From 1979 Armstrong AX
Frank:
Just came across this thread re: AC replacement and saw that you have the shroud for the unit available. I have a 79 31' Soverign and I am looking for a new shroud (both top and bottom if possible but esp. the top portion). Is this still available? Thanks, AJ
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08-02-2002, 11:10 AM
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#12
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4 Rivet Member
Join Date: Feb 2002
Posts: 334
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AC parts give away
I have tried to send the shroud to a guy in FL. The UPS guy wanted me to build a box for same and support cover so as that other packages would not crush same. I don't want another task. It is free to whomever picks up shroud. This is a fragile part. The part could become trash in shipment. Frank
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