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Old 09-29-1999, 10:19 AM
Rick Miley's Avatar
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Join Date: Jun 1999
Location: Land O Lakes, FL
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Question regarding the AC compressor discharge hose on my 300E. It has a metal cannister with some other hoses running to it. It has developed a refrigerant leak where the cannister is welded. Anyway, what is this cannister? The service writer at the dealership said it is a "fuel cooler." Of course, I'm thinking no way because it has high temp, high pressure refrigerant running through it. What is it?

Rick Miley
Tampa, FL
99 E300DT
86 190E
87 300E

Old 09-29-1999, 11:32 AM
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Join Date: Apr 1999
Location: Walnut,CA,USA
Posts: 554
That is drier,the main purpose of the drier is to separate liquid from the vapor and act as a storage device for liquid freon also absorb small amounts fo moisture which may enter the system.
hope this help.

MB STARS Master Guild Technician,12 years MB tech
5 years independent shop owner
Old 09-29-1999, 01:57 PM
Rick Miley's Avatar
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Join Date: Jun 1999
Location: Land O Lakes, FL
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I'm not talking about the receiver-drier, which is mounted just behind the left headlight and has the sight glass on top. I'm aware of its function. The thing I'm talking about is back behind the compressor, is integral with the high pressure hose, and is about 2/3 the size of the receiver-drier. Thanks for your response, though.

Rick Miley
Tampa, FL
99 E300DT
86 190E
87 300E

[This message has been edited by Rick Miley (edited 09-29-1999).]
Old 09-29-1999, 06:36 PM
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It'"s a silencer (muffler) that silences the pulsation from the A/C compressor.
Old 09-29-1999, 07:38 PM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Since the a/c line from the low pressure is cold, your S.A. is correct. Mercedes uses fuel coolers on the return side of fuel system, fuel returning to tank is cooled whenever a/c compressor is on. This started in 1980 on 450 models. Most euro versions don't have fuel coolers.
Old 09-29-1999, 08:23 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
I had one enter my shop (300E) with the same problem. It is the first one I have seen fail there.

1981 280GE SWB
1987 16V

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