[W126 Coupe] Air Conditioning Issues

[malcolm369 at comcast.net]

Hi Cal,

In addition to the other good advise posted, Here's what I did, finding a leaking man/hose on a well functioning ACC.

I did have the slightly leaking manifold hose replaced with OEM NOS (old stock). The first one came through with rust inside one of the hoses. (1 day extra) A fresh OEM hose was installed, along with new MB o-rings.... filled with R12 (Cold) thank you.

No drier/expansion valve, etc. replaced. ACC working fine & seemed a bit weak only. The drier (in round numbers) will saturate in about 20 minutes with a hose broken or unsecured. If the system is cool (or so) you're probably fine to leave it alone. (seat of the pants prior A/C training & shop experience here) your mileage may vary.

OEM Part: $398.............  Aftermarket: $179!!!

I don't know. If an aftermarket hose is designed for more modern R-134 refrigerant, won't it be better with the larger molecule R-12? I don't know.

I think I'd replace it with an aftermarket hose today.

The refrigrigerant & sundries are pretty standard......... the hose is the biggie.  WOOF!

Hope this is of assistance.

MBL

 -------------- Original message ----------------------
From: "Calvin Young" <calvinyoung at cox.net>
> My last visit to the dealer advised that my air conditioner manifold hose is
> leaking.  Anyone have  any experience with replacing this and want to share
> their experience.  How much is the hose, better to repair than replace,
> replace the receiver dryer at the same time, etc.
> 
> Cal
> 
> 
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