Re: V8 PACKARD FACTORY AIR CONDITIONING PHOTOS & INFO WANTED

Posted by HH56 On 2019/2/27 19:55:43

Quote:

I believe all the major or hard components stayed the same for both years. Apparently the humming or vibrating sound emanating from the compressor piston pulses the bulletin details, because of the hard tubing, was being transmitted to the evaporator and thus the passenger area on some of the 55s. For 56 Packard changed to hoses which was less likely to transmit vibration and I have to believe an added benefit was hoses might have been cheaper to make than all the bending and soldering used on the 55 tubing. They also added a muffler in the pressure side for added control of the noise problem and issued the kit with those changes as mentioned in the Nov 55 bulletin for retrofit to 55s if warranted.