Oh, all the cleaners for said evaps have a certain level of corrosiveness. All of them. They nee dti to break the corrosion layer loose from the aluminum. flushing thouroughly is a must. The pontoon cleaner leaves the toons shiney again and peels off all the layers of grime a dullness. As with any off label use I guess you takes yer chances. If the cleaner leaves a hole behind it wasn't going to hold under pressure for long anyway! -- Mark Price Morgantown, WV 1969 AMC Rambler, 4.0L, EFI, T-5 2004 Grand Cherokee Laredo, 4.7L, Quadratrac II " I realize that death is inevitable. I just don't want to be around when it happens! " -------------- Original message ---------------------- From: adh@xxxxxxxxxxxxxxxxx (Sandwich Maker) > " From: Wrambler242@xxxxxxxxxxx > " > " answers in the text. > " > " > " -------------- Original message ---------------------- > " From: "Armand Eshleman" <aje1@xxxxxxxxxxxxxxx> > " > A million thanks Tom, > " > > " > [] > " > > " > > " > > " > 1. What cleaner or solvent should be used? Would CRC Brake Clean work? > " > " Brake clean will work. A friend who works on household A/C and > " heatpumps mentioned a chemical they use. > " You spray it on, let it soak, then house it off. It removes the fine > " layer of deteriorated aluminum to allow better heat transfer. I don't > " have name for it as he never came through and gave me some! try a > " household A/C shop or supply place for it. I'd use a product made by > " "Star Brite" called Toon Brite if I could not find anything else. It > " cleans the grime off of pontoons on pontoon boats quite well. No > " scrubbing at all. > > i'd be concerned that any of the cleaners mentioned that aren't > specifically for a/c work might be corrosive, even mildly, to the > aluminum. i'd be reading labels very carefully. > > thought: an aluminum paint might inhibit heat transfer, but if it > protects the metal it wouldn't get any worse. potentially easier to > clean too. > > i've been trying to edumacate myself about a/c too, specifically where > to get parts like compressor clutches - it seems to be nearly > impossible to find compressors and clutches separately. in the > process, i've come across an interesting fact: starting in '11, europe > is phasing r134a out in favor of something with a lower global warming > footprint. the leading contenders are hfo-1234yf, hfc-152a, and r744 > aka co2 [!]. the first 2 are freons like 134 but claim to work better > though both are 'slightly' flammable; one experimenter anecdotally > compares r152a to r12. r744 is supposed to need very high pressures > but at least 2 companies have vehicle r744 compressors. > > the compressor in my '94 cherokee is presently tango uniform. i'm > noodling the idea of getting a smaller compressor and larger pulley; > up here in the nearly-frozen north the only real use i have for a/c > more than a few days a year is assisting the defroster. the goal > would be reducing a/c power requirement. > ________________________________________________________________________ > Andrew Hay the genius nature > internet rambler is to see what all have seen > adh@xxxxxxxxxxxxxxxxx and think what none thought > _______________________________________________ > Amc-list mailing list > Amc-list@xxxxxxxxxxxx > http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list