Air Conditioning
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05-31-2008, 09:23
Post: #4
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Air Conditioning
Presumably over the driver's head, but I've not dug back in there to find out
for sure. While they moved the condensor on ours I don't know why they would move the evaporator. On 5/31/2008 at 2:03 PM Leroy Eckert wrote: >Mine is the same configuration as yours Don. I do have a small leak >somewhere that I cannot find. It leaks down about once per year but works >great when it is charged. The leak must be very small. Converted to 134a. >Just curious, where is the expansion valve and evaporator in your coach? > >Leroy Eckert >1990 WB-40 Smoke N Mirrors >Dahlonega.GA >Royale Conversion > >Don Bradner >There've been a few A/C discussions in various threads recently - must be >a calendar thing. I thought I would add my own. > > I've always been very impressed with how well the overhead chassis air >cooled driver and passenger in Blue Thunder. In previous SOBs on really >hot days the dash air was never enough - had to run the generator and a >house A/C as well. Blue Thunder is one of the 90s with the condenser back >at the radiator rather than on top of the front cap. > > 10 days or so ago there was a big heatwave on the west coast, and I >turned on the A/C for the first time in a couple of months - no cold at >all, sigh. Ran the generator as needed to keep things decent, and waited >until we got home to check things out. > > On top of the hoses as they leave the compressor are R12-to-R134a elbow >service ports. Both were loose, and a small amount of pressure on the >high-side fitting caused it to separate. There was no gas escape, >indicating that it was all long-since leaked out. > > I assume that I am the culprit on this. I had to drop the pump in order >to disconnect one of the gate valves when I was searching for my chassis >heater problems, and I'm guessing I hit the fittings at some point during >the process. They are rather exposed and easy to collide with. > > A local outfit did the service, replacing both fittings and using 7-1/4 >lbs of R134a. An expensive lesson, for sure, over $600 bottom line. > > The records from the coach's second owner shows a $700 bill in July of >2001 for "A/C repair" so I'm guessing that may have been the original >conversion. > > I know there are a number of folks who have posted that their dash air >does not work, and they just use the generator/house air solution. We >considered that, but even with the high cost of repair the economics >appear to be in favor of the repair route. Our generator pulls about 1/2 >gallon per hour when doing light work like a single air conditioner. At $5 >per gallon that would mean $600 would run the A/C for 240 hours. At most >that would be a couple of years for us, and probably less. We will be >traveling to the East Coast in August, and are likely to be in hot weather >until we leave Florida in November. > > I'll be sorry if it turns out that I have a leak somewhere else, but I'm >fairly confident that I don't. The tech put plenty of fluorescent dye in >with the refrigerant, and nothing has shown up anywhere. > > Don Bradner > 90 PT40 "Blue Thunder" > Eureka, CA |
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Messages In This Thread |
Air Conditioning - Don Bradner - 05-31-2008, 06:36
Air Conditioning - Terry Neal - 05-31-2008, 06:58
Air Conditioning - Leroy Eckert - 05-31-2008, 09:03
Air Conditioning - Don Bradner - 05-31-2008 09:23
Air Conditioning - Pete Masterson - 05-31-2008, 12:58
Air Conditioning - Don Bradner - 05-31-2008, 15:56
Air Conditioning - Pete Masterson - 06-01-2008, 05:59
Air Conditioning - barry boyette - 06-01-2008, 10:38
Air Conditioning - Fred Hulse - 06-01-2008, 15:54
Air Conditioning - Curt Sprenger - 06-01-2008, 16:14
Air Conditioning - Ryan Wright - 06-01-2008, 16:47
Air Conditioning - Gregory OConnor - 06-02-2008, 00:36
Air Conditioning - Henry Jay Hannigan - 06-02-2008, 03:17
Air Conditioning - barry boyette - 06-02-2008, 14:10
Air Conditioning - George Brengelman - 06-03-2008, 13:00
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