70 B-body evaporator tubes in the drip tray?

[Suregrip391]

Can anyone explain to me why there are flanged style tube extensions pressed on the copper drain lines coming out of the trip tray of a 68-70 B Body evaporator unit? Is it that the copper drain lines are not long enough to pass through the firewall on there own? I removed the flanged tube pieces and they look alright, but I guess I was not careful enough with the copper drain lines that the tubes press onto. They are somewhat mangled. I will not be able to press the flanged tubes back on. Is this an issue? Hope the above makes sense, thanks.

 

[69Bee]

The flanged part held a sealing washer in place that sealed the tubes to the firewall. Now your water will leak down onto and under the carpet without them.

 

[Suregrip391]

Well that's just great! :violent-smiley-100: , the attached picture is not mine, I found it online. I would say the first 1/2" ( ends of the tubes) of mine are munched up, I understand a foam like seal roughly 1/2" thick goes on these tubes and then the flanged tube entensions press on? Maybe I'm just not understanding but if condensation falls into the drip tray and the copper tubes protrude through the firewall how do the flanged extensions help to seal? It seems as though the water would be contained in the drip tray and drip out the tubes past the firewall. I know I'm missing something here. :coffee2:

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If I can somehow clean up and straighten the ends of those copper tubes, does the flanged tube just press on flush to the ends or how far do they press on? Maybe I can save it. If I have it right from looking at other pictures, these flanged tubes get pressed on, then the seal goes on, correct? The flange is what prevents the seal from sliding all the way back towards the heater/AC box?

 

[69Bee]

Well that's just great! :violent-smiley-100: , the attached picture is not mine, I found it online. I would say the first 1/2" ( ends of the tubes) of mine are munched up, I understand a foam like seal roughly 1/2" thick goes on these tubes and then the flanged tube entensions press on? Maybe I'm just not understanding but if condensation falls into the drip tray and the copper tubes protrude through the firewall how do the flanged extensions help to seal? It seems as though the water would be contained in the drip tray and drip out the tubes past the firewall. I know I'm missing something here. :coffee2:

- - - Updated - - -

If I can somehow clean up and straighten the ends of those copper tubes, does the flanged tube just press on flush to the ends or how far do they press on? Maybe I can save it. If I have it right from looking at other pictures, these flanged tubes get pressed on, then the seal goes on, correct? The flange is what prevents the seal from sliding all the way back towards the heater/AC box?

Shop Manuals are too cool.... ;) All it is is a small piece of foam rubber that seals the tube to the firewall.

 

[DrivenResto]

We just finished up a 1970 A/C heater box restoration. Find it here: http://blog.drivenrestorations.com/2015/11/1968-1970-b-body-mopar-heater-box-with.html