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1996 SL500
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282 Posts
Discussion Starter #1
A slow leak has been identified in my AC system. My Refrigerant Suction Hose, P/N 1192300956, is the culprit. I was quoted $1,300.00 for a replacement. $700 for the hose and $600.00 labor. When I got up off the floor I decided it would be a DIY job. The best price I found for the hose is in the $340.00 range,
Mercedes A/C Refrigerant Suction Hose (500SL SL500) - ACM 1192300956 | FCP Euro which seems fair enough. Now the question. What am I in for in doing the replacement. I do have access to a lift. Has anyone done this and can you share with me some knowledge if you did. It doesn't seem hard. I have a place that will evacuate the system and recharge it after I change out the hose. Are there any other O Rings, bushings or seals I should change when I'm changing the hose? On a scale of 1-10 this looks like a 4-5. Maybe a 2 hour job.
 

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Greek God of the R129
SL500-500SEL-190E
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Are you aware that some a/c places have tools to replace only the rubber hose?

Regards,
aam.
 

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1998 SL500, Panoramic Roof, Factory Xenons, Black/Black/Black 2012 GLK350 Black/Beige
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126 Posts
Call around. I am certain you can find an auto a/c specialist shop that can make up the hose for less than $100, particularly if you have both metal ends and they just need to replace the rubber hose and crimp on your existing ends. I had one made up for a 35+ year old Ford pick up for under $50 in Atlanta.
 

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1999 SL500
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49 Posts
Just had this done last week as my low pressure hose had burst. The shop that I went to removed and repaired the hose, replaced the dryer, and recharged the system. Parts and labor were around $575.
 

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1996 SL500
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Discussion Starter #6
Found a place to repair the hose... $40 - $80 depending..

I need to get them the hose.

So is taking it out an issue or not? Seems pretty straight forward but I would just like to hear from someone who has done it before.
 

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Greek God of the R129
SL500-500SEL-190E
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8,391 Posts
It is hard to know your knowledge&abilities, tools....
For me is easy for you, I don't know.

Anyways you need to jack the car up, get to the compressor, remove the hose, then from the top.
You MUST replace the drier, a few 0 rings, evacuate the system, charge. Etc.

Regards,
aam.
 

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94 SL600, 89 Jag XJS conv, 85 Daimler Princess, 97 993 63 Avanti 16 Lincoln MKZ hybrid 16 Silverado
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720 Posts
NAPA has made many hose replacements for a minor cost! The exact fitting gets the best product. ( British cars have some extraordinary fittings ) Those minor turns and angles are important, so take in the part to be replaced. IMO The specifications of the hose are better than any of the old hose.
 

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99 SL500
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126 Posts
reiterating AAM

I consider myself to be a true DIYer but the two things I ALWAYS take it to a shop for are tires and air conditioning. - JustMyOpinion
 

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Greek God of the R129
SL500-500SEL-190E
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8,391 Posts
I consider myself to be a true DIYer but the two things I ALWAYS take it to a shop for are tires and air conditioning. - JustMyOpinion

OK, You got me, I also take my cars.....

For tires. Lol.

Regards,
aam.
 

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Found a place to repair the hose... $40 - $80 depending..

I need to get them the hose.

So is taking it out an issue or not? Seems pretty straight forward but I would just like to hear from someone who has done it before.
May I ask how much it cost you to repair the hose?

Thank you
 

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94 SL600, 89 Jag XJS conv, 85 Daimler Princess, 97 993 63 Avanti 16 Lincoln MKZ hybrid 16 Silverado
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720 Posts
removal of a hose is not an issue if there is no pressure, and you can keep the openings clean. Good luck.
 

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Thanks for the tip. The hose assembly R&I seems simple. Just need to keep the holes clean, like you say.

Looking for a good SF area AC repair shop that'll charge around $50 to do a hose section.

My hose is burst at the top (near the valve cover), but would you recommend that I replace the lower hose section while I've got the hose assembly removed?
 

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'01-E320 & 02-ST2
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Thanks for the tip. The hose assembly R&I seems simple. Just need to keep the holes clean, like you say.

Looking for a good SF area AC repair shop that'll charge around $50 to do a hose section.

My hose is burst at the top (near the valve cover), but would you recommend that I replace the lower hose section while I've got the hose assembly removed?
For the cost involved, I'd replace them both. Once they are replaced you have to replace (also) the dryer, then have the system evacuated, then recharged. Be a shame to save $60 or whatever on the hose and then have to do it all again. (You are probably a little light on the cost, everything to do with a car is more in the bay area.)

For a source try a PM to kajtek1, he has mentioned that he got a hose redone, he's over in the Lafayette/Orinda corridor.

Good luck.
 

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Aside from the drier, is there anything else you'd replace? Is the expansion valve a common suspect?

Btw, replacing both the upper and lower could cost around $125-150. Am I better off getting the assembly new at $325+?

Lafayette/Orinda is pretty far from me. I'm in North Bay, so the drive there and back would be about the price of repairing a hose.

Also, my Denso 10P compressor requires 8oz of PAG-46. After an evac, should I assume that there is 0 oil left in the system, and so add 8oz? Or, should I assume that there's still 1 or 2 oz in the system?
 

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Greek God of the R129
SL500-500SEL-190E
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8,391 Posts
There you go.

Compressor 10PA17 with R12, 120.

1. Line ruptured add, 40.

2. Replace condenser, 20.

3. Evaporator, 40.

4. Drier, 20.

5. Replace compressor, 20.

Compressor 10AP17 with R134a, 140.
Same as above.


Compressor TRS105 R134a, 150.
Same as above.

After evacuation there is always left oil in the system.

On an open system always replace the drier.

Expansion valve suspect??

If it works don't fix. Lol.

Regards,
aam.
 

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Thank you, that's great info. For my ruptured line, I'll add 40cc, and 20cc in the drier.

As for the hose assembly, replace both upper and lower hose sections for $150, or buy new for $325? I'm leaning on buying new....
 

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Greek God of the R129
SL500-500SEL-190E
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8,391 Posts
Thank you, that's great info. For my ruptured line, I'll add 40cc, and 20cc in the drier.

As for the hose assembly, replace both upper and lower hose sections for $150, or buy new for $325? I'm leaning on buying new....
You are welcome. :)
$175 of savings....
I leave that up to YOU. Lol.

Regards,
aam.
 

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1995 SL 320
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65 Posts
Aam, I am about to put my new drier, compressor and expansion valve after I flush the system today.

Do I had the total oil back into the compressor? Someone mentioned something about adding some into the drier, not sure about this. Thoughts?
 

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1995 SL 500 2017 AMG GLC 43
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942 Posts
Aam, I am about to put my new drier, compressor and expansion valve after I flush the system today.

Do I had the total oil back into the compressor? Someone mentioned something about adding some into the drier, not sure about this. Thoughts?
Put a 1/2 oz. of PAG 46 oil in the drier.
 

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