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#1
06-13-2003, 12:29 AM
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Very Noisy W124 AC, when off!
Good Evening,
My AC unit has become very noisy when off. When the AC is on it is quiet and perfect sounding. When off a high pitched laborious squealing noise. Clearly identified sitting in car with motor running and windows open and changing AC on and off by switching from “0” to the “Normal” position. Car is '86 300E. 162k miles. What do I do? Is the pulley/clutching system replaceable? How hard is it? Thanks, David
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David 1986 300E Anthracite + ECodes + MB Mileage Award 
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#2
06-13-2003, 10:52 PM
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Bump bump. Nobody?
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David 1986 300E Anthracite + ECodes + MB Mileage Award
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#3
06-20-2003, 04:54 PM
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Help! Still no replies! I have ordered the part. I got a rebuilt from the dealer for $108. How hard is this to install? I realize this is a basic question, but how to I losen the belt on this car?
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David 1986 300E Anthracite + ECodes + MB Mileage Award
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#4
06-20-2003, 05:12 PM
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david,
You have to loosen (not remove) the bolt just under the water pump, which belongs to the belt tensioner I believe its a 14mm and is kind of hard to spot. Then you can turn the adjuster bolt on top (gold looking tube bolt). Note the tension on the belt before loosening. This should allow you enough slack to remove the compressor. Good Luck...Someone else will chime in if I forgotten something.
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Brandon 2008 S550 1957 Dodge D100 1967 VW Microbus 21 Window 2001 Suburban 2004 Beach cruiser bicycle -----------------GO DUKE!----------------- "It cannot be emphasized too strongly or too often that this great nation was founded not by religionists, but by Christians; not on religion, but on the Gospel of Jesus Christ. For that reason alone, people of other faiths have been afforded freedom of worship here." Patrick Henry 1776
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