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Discussion Starter #1
The A/C in my 79 wasn't blowing out of the instrument panel vents. After going through the service manual several times, I found a broken vacuum line leading to the diverter door diaphragm which unfortunately is located behind the heater case & core assembly. So, since I have to remove it anyway, I'll be replacing the heater core too. I've searched previous posts and have a pretty good idea of what the job involves. I've replaced cores in other cars I've had but not one with A/C.

My questions are do I have to disconnect all the vacuum lines and the temperature cable to remove the case or is there room to maneuver with them connected? Do I remove the lines from the case end or from the control panel on the dash? Are there any electrical connections on the case that need to be disconnected, I don't think I saw any?

Thanks in advance for the help,
Mike
 

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I'd pull them off the dash control. It's usually easier. I'm not far from you so holler if you need in person guidance.

You realize you can splice the line right?
 

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Discussion Starter #3
Thanks Knuckle Dragger, I appreciate the offer. The line seems to have broken off where it connects to the diaphragm. So far I haven't been able to get my hand behind the heater case to find the connection point and repair the line. You gave me an idea though. I may be able to get a little more clearance by loosening the heater case bolts, moving it around a bit and avoid having to do a complete removal.
 
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