| [GMCnet] Restoration. Roof A/C units. [message #299522] |
Sat, 23 April 2016 01:17  |
BobDunahugh
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
Karma: 11
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Senior Member |
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Both my A/C units are Dual/Therm. See no reason for new one's. Took both off to clean. I don't think total removal is required. But mine got the mouse work over as everything else did. I think the PO ran both A/C units without air filters most of the time. That was just another mess to deal with. New filters at Walmart. Cut to fit are 96 cents. A power washer, soap, water, a soft brush, and a condenser comb got things in good order again with both coils in each A/C unit. The blower motor can be lubed up to some point between VIN 617, and 860. These number are the last 3 in the VIN of 1978 GMC's. Note that this could vary. ( Checking your's to confirm is suggested. ) After that point the bearings are sealed from what I've found. The inside, and outside covers got coats of the correct colors. New decals from Jim K at Applied. Now bothy look like new. Side note. New frig from Jim K at Applied goes in tomorrow. Bob Dunahugh 78 Royale.
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| Re: [GMCnet] Restoration. Roof A/C units. [message #299530 is a reply to message #299522] |
Sat, 23 April 2016 09:07  |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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I agree Bob. The units are hermetically sealed unlike automotive systems that are designed to leak a a low rate with rubber hoses and a rotating compressor seal. Just the way it is. They use slightly more Amps, but does that matter in our application? Can't see how. Better for the planet to use them than possibly vent during recycling as there are no service ports, do people really reclaim the R22? I think the inside and outside look is still best looking and fits the era. Just check all the push on connections for mouse pee corrosion.
John Lebetski
Woodstock, IL
77 Eleganza II
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