Re: {Chrysler 300} 1962 Expansion Valve

Alao carefully unscrew the equalization tube- small fitting off of the expansion valve- looks a lot like the sensing tube. It has a small fitting with an o ring on it- dont lose that tiny o ring! Hard to find and needs to be matched up with the proper new one ( green for r134a). Sometimes they stick inside the bore of the suction line fitting so use an o ring tool and gently pick it out.

Great advice.

Thank you!

Matt Allyn

On Aug 22, 2025, at 1:31 PM, Kevin deGraauw <kdegraauw@xxxxxxxxxxx> wrote:

Once you separate those oval shaped sheetmetal "clamshell"halves around where the lines enter the case, you will run into a lot of sticky "dum dum" insulation. Carefully peel all that off and you will see the two line fittings better and reveal the temp sensing tube. It clips to the evaporator suction line unclip and gently pull it all out of there. Use backup wrenches on ALL fittings and cap your lines as soon as you do. Of course please remove all refrigerant first safely and properly by recovering it. Good Luck!

Kevin

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From: 'Matt Allyn' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Sent: Friday, August 22, 2025 1:51:16 PM
To: Club International Chrysler <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: {Chrysler 300} 1962 Expansion Valve

I aim to do restoration work on the Air Conditioning.
I wish to check the Expansion Valve for leaks and/or test it.

How simple or hellacious is it to remove the Expansion Valve from its fiberglass firewall housing?

Thanks!

Matt Allyn

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