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Old 09-09-2003, 04:06 PM
Registered User
Join Date: Mar 2003
Location: New Hampshire
Posts: 158
A/c hose removal consequences

Hey guys,

I will be removing my main a/c hose on my 88 190e for replacement. I just wanted to ask if i have to worry about the oil in the compressor, or if this is just a nice easy swap. It got crimped when i pulled out my engine.

I will replace the orings on the compressor manifold.

Thanks for any comments.

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Old 09-09-2003, 07:48 PM
engatwork's Avatar
Join Date: May 2000
Location: Soperton, Ga. USA
Posts: 11,234
There are some guidelines on how much oil to add to the different parts based on full capacity rating. You are going to replace the dryer aren't you?

I had a manual laying around here somewhere that had the various capacities of different cars or you can try You will want to add a percentage of total to the various parts that you replace, remove, etc...

If it were me I would flush everything out and start from scratch.
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Old 09-09-2003, 11:58 PM
Registered User
Join Date: Mar 2003
Location: New Hampshire
Posts: 158
I would love to be able to replace the dryer, however since just replacing the engine and its associated costs, i now have $1.13 in my account. No kidding either. Due to my buget of 0, i can only due what i already the parts to do. So i guess i will try to find if i need to add anything due to the replacement of that hose. Engatwork, thanks for the website reference, i will search to try and find some info there.
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Old 09-10-2003, 07:30 AM
Registered User
Join Date: Nov 2001
Location: North Central Kentucky
Posts: 1,061
I did that job on my old '86 190E 2.3. No fun. Jack the car up high and use good jackstands. You will have to loosen a few things to get it out. Don't forget the fuel cooler circuit. Release the presure and cap the lines while they are disconnected. Seems I had to raise the engine slightly. I had to replace the compressor too, so while I had everything out of the way, I replaced the motor mount. To finally get the line in or out, you have to kinda screw it into position. Twisting it in from the top as I recall. Suddenly it all falls into place. Plug the ports in the compressor when you take the main fitting off and oil loss will be minimal. Cap/plug the hoses and all fittings if you are not going to replace the dryer. Want to keep exposure to moisture to a minimum. I converted to 134A when I did the job and also replaced the TXV and receiver/dryer. Cools well, but that darn 134a will find some place to slowly leak out. I replaced just about every O-ring and it still needs to be topped up each season. May be leaking thru the hoses themselves since they are not barrier hose.
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