ABC High Pressure Line - Page 2 - Mercedes-Benz Forum
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post #11 of 17 (permalink) Old 05-01-2010, 01:04 PM
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What year cars were in the recall? Does anyone have the recall number?
I have a 2003 sl55 that I am the 3rd owner of. The ABC expansion line is seeping hydraulic fluid. This line attaches to the back of the abc/ps pump and is a hard line that crosses in front of the engine then converts to a hydraulic hose on the passenger side of the motor. Near that hard line to soft line coupling is where it's seeping fluid. From my understanding this line routes down the side of the engine and then up and over the transmission. The dealer recommended to wait the line out rather than replace it do to the high cost of replacement. Their stance was that it may never fail (or at least not anytime soon)

What are your thoughts?
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post #12 of 17 (permalink) Old 08-19-2018, 09:58 PM
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I'm waking up this thread rather than starting a new one. My expansion hose was replaced in 2010 by the previous owner. It is weeping again. I checked my SDS for replacement instructions but only found a diagram. Can't seem to find any repair instructions. Any help is much appreciated. It is the hose as described by the previous post here.
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post #13 of 17 (permalink) Old 08-20-2018, 08:17 AM
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Look at the EPC diagrams - they are sometimes more helpful than the WIS instructions. On my SL550, this was an easy job. The hose came off of the pump, ran down the left side of the radiator, and to the block in front of the wheel. I think on the SL65, it is more involved due to routing around that big engine.

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post #14 of 17 (permalink) Old 08-20-2018, 08:21 AM
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Quote:
Originally Posted by Triple cranks View Post
I'm waking up this thread rather than starting a new one. My expansion hose was replaced in 2010 by the previous owner. It is weeping again. I checked my SDS for replacement instructions but only found a diagram. Can't seem to find any repair instructions. Any help is much appreciated. It is the hose as described by the previous post here.


The expansion hose you're talking about is the rubber hose that goes from the pump to the main high pressure line right? if that's the one, i can change it for you, i just changed mine this year. It was weeping and eventually started to leak a lot. That hose is about $300 i think when i bought it.
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post #15 of 17 (permalink) Old 06-19-2019, 06:32 PM
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How did you do it? Thinking of trying it myself.
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post #16 of 17 (permalink) Old 06-20-2019, 06:30 AM
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I did mine

Quote:
Originally Posted by Triple cranks View Post
How did you do it? Thinking of trying it myself.
I did mine a few weeks ago after I saw the HP from the pump to the distribution block started to leak took the hose to a local hydraulic shop and had it redone for about $75.00

Perhaps the way to get to it on the 2007 SL55 is easier than other model years but hind sight apart from getting the bolts out between the frame and pump it's not that hard to do.(my opinion)

Hereby some pictures

Last 3 pictures are of the replacement hose used now with 5800 PSI versus 4800 PSI (old hose)
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post #17 of 17 (permalink) Old 06-20-2019, 07:33 PM
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Good job! And thanks for the pics.

Mine is a completely different animal. It took some time but I managed. Did it on the lift. Removed both side engine mount bolts from below. Lowered the front suspension carriage while I had a stand holding the motor up. Barely had room with an extension and universal joint. It took several hours but luck played a big part. Bled the pump with 1 bar while running. Topped it off and ran a rodeo. Good to go.

Now messing with other minor things. Trying to get rid of all of the "i"'s and "f"'s stored.
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