Re: {Chrysler 300} 1962 Expansion Valve

[John Grady <jkg@xxxxxxxxxxxxxxxxx>]

Id leave it alone , see if it works . If it does , go on to any real problems with AC .. compressor or leaking core , leaks generally . vacuum / nitrogen , unless planning to change it all anyway to new refrigerant  then use cans and sniffer .  to be be sure no leaks  

Most likely expansion valve is ok  

 

There are many anecdotes all true about changing to a modern refrigerant properly ( rebuilt compressor , get all old oil out , new or cleaned out lines , new receiver dryer , same expansion valve works ok     correct oil  

Not “ universal oil”—  use I think called PAG oil . (?) 

good luck john 

On Aug 22, 2025, at 5:04 PM, 'Matt Allyn' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:

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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