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  #1  
Old 04-27-2007, 01:56 PM
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Replacing A/c Items

I have recently ordered a new expansion valve, drier and the two leads on the drier for the aux fan for my 420sel. i intend to replace them and cure my leaky a/c once and for all. My question is that when i replace these items do i need to by some sort of o rings for them or do these parts come with them or even need them. the expansion valve looks like a PITA so I dont want to do it over again and i cant afford to throw away 150 dollars worth of r12. thanks for any replies

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Old 04-27-2007, 02:17 PM
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I had to get my own o-rings... it seems like i ordered some extras as well.

the expansion valve is a PIA...i thought it would be impossible to do on a
w124...it just took a lot of patience...a lot of patience

you will swear you can't get the wrenches in there..but you can.
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  #3  
Old 04-27-2007, 03:24 PM
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On the 124 it can help a lot to remove the black plastic trim pieces above the expansion valve.

The new drier will probably have plugs with o-rings underneath. Should you use them? Probably not, if you remembered to order new ones.
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Old 04-27-2007, 04:01 PM
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so all three items need o-rings purchased separatly?
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1989 560SEC
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  #5  
Old 04-27-2007, 04:23 PM
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New o-rings for every part that you replace is always a good idea in MVAC.

These guys are near you and know their stuff. Go there and ask for what you need. They'll have it.

http://www.caawparts.com/index.asp?Page=Home
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Old 04-30-2007, 02:23 AM
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thats funny because i bought this car from one of the managers at that company and he didnt even fix the leak before he sold it.

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