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Old 07-10-2002, 07:52 PM
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AC suction line blew

My 95 sl500 while sitting in the garage for no reason decided to get into my wallet. The suction line blew (might have been rubbing the head) but I haven't used the ac in a while because the top is down. Do I have to add compressor oil or can I just replace the line and charge with freon? Also does anyone know if I can repair the line with some kind of coupler or something? Thanks, George
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Old 07-10-2002, 07:57 PM
Gilly's Avatar
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Join Date: Mar 2001
Location: Evansville WI
Posts: 9,616
Usually what you're looking at with this is the whole manifold hose set, which is the high and low side hoses off the compressor.
You'll want to also replace the receiver/drier, as the system is now exposed to humidity.
Sooner the better.
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Old 07-11-2002, 09:42 AM
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Join Date: Jun 2000
Location: Plano, TX
Posts: 2,512
The manifold hoses can be rebuilt by a competent a/c shop. They will replace the rubber portions while retaining the metal manifold assembly and end pieces. Quality is the same as new. Be sure to replace the valve cores for the service valves - they get tired & leaky over time. You'll find that going this route will save 300-500 dollars.

You'll need to add oil because you will be replacing the receiver/dryer. It's doubtful you lost much oil through the hose. Refer to the shop manual on how to determine the correct amount of oil to add. Two ounces or so is typical with a dryer, but you need to research it. Be sure to use the correct oil as well, otherwise larger problems loom down the road.
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Old 07-11-2002, 09:56 AM
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Join Date: Dec 2001
Posts: 571
JCYUHN is right about the hoses - have them rebuilt. The price for new ones is nothing short of ridiculous.

Look in the yellow pages for places that rebuild hydraulic hoses.
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Old 07-11-2002, 01:07 PM
engatwork's Avatar
Join Date: May 2000
Location: Soperton, Ga. USA
Posts: 11,877
Do a search on Yahoo at "Tubes N Hoses". You should be able to find one in your area.
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Old 07-12-2002, 02:12 PM
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Well, I found an old R12 coupler at Pep Boys, cut the $450.00 suction line and installed then gave it a shot of freon and it's working great. Thanks for all your info. Total repair $65.00. Hope it holds up. George
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Old 07-12-2002, 02:22 PM
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Join Date: Feb 2002
Location: Bend, Oregon
Posts: 112
Hi George-

I had the same exact thing happen to my 1992 500SL. I was in the house and heard a loud "pop" and then a hiss. Come to find out it was my hose as well.

I live in a rather small town and I wanted to get it fixed right away. Total parts and labor at the MB store was some $730!

I hope your fix works for you!
2002 G500
2003 Audi Allroad
1999 Range Rover
1992 500SL (sold)
1999 ML320 (sold)
1989 300SE (sold)
1987 560SL (sold)
1986 300E (sold)
1983 300SD (sold)
1982 300D Turbo (sold)
1980 300D (sold)
1973 450SL (sold)
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