Leak on the CL600 (ABC related)
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Super Member
Joined: Aug 2007
Posts: 649
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From: Las Vegas
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Leak on the CL600 (ABC related)
Hi guys,
Found a small leak come off of the y split (close to the differential) of my exhaust. Further investigating it's some sort of black rubber ball (ABC related I'm sure), please see pictures.
Previous the dealer replaced all front/rear ABC spheres and refilled ABC fluid and rodeo test which it passed.
Any help appreciated with what you see is the issue with the leak.
Found a small leak come off of the y split (close to the differential) of my exhaust. Further investigating it's some sort of black rubber ball (ABC related I'm sure), please see pictures.
Previous the dealer replaced all front/rear ABC spheres and refilled ABC fluid and rodeo test which it passed.
Any help appreciated with what you see is the issue with the leak.
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Joined: Mar 2010
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From: London UK
2013 W204 C63 AMG, 2008 W221 S65 AMG
Thats the rear ABC accumulator as you say. I would give it a clean up and see where its leaking, if its the line istelf, or if its leaking from the connection into the sphere.
The spheres themselves are one piece things so they cant leak themsleves unless severely damaged (which yours doesnt look).
It may be just that the dealer didnt torque up the connection correctly (hopefully!).
Do check your ABC fluid level now, as if its low the pump can suck in air and be damaged. Only use Pentosin CHF11S fluid to top up and ensure the tank and surrounding area is very clean.
The spheres themselves are one piece things so they cant leak themsleves unless severely damaged (which yours doesnt look).
It may be just that the dealer didnt torque up the connection correctly (hopefully!).
Do check your ABC fluid level now, as if its low the pump can suck in air and be damaged. Only use Pentosin CHF11S fluid to top up and ensure the tank and surrounding area is very clean.
Thread Starter
Super Member
Joined: Aug 2007
Posts: 649
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From: Las Vegas
3-pointed star
I'm confused guys, my dealership paperwork shows when I went into the dealer they replaced the front/rear ABC spheres... is that another name for accumulators? Is that what the black ball looking thing is in my picture?
MBWorld Fanatic!
Joined: Nov 2001
Posts: 6,340
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From: Southern California, USA
2003 CL55 AMG
Yes, that is one of the accumulators (nitrogen spheres). They are not rubber but steel.
Clean it up and check the line is tightened correctly. Its either leaking at the line to accumulator joint or the line may have a leak that is running down the length of line on the accumulator.
If it is a leak in the actual line, check all associated ABC lines as you may need to replace more than just that one. They often will start to weep before they leak and blow.
As noted above make sure the ABC reservoir DOES NOT run low or dry since you are losing fluid from the leak.
Clean it up and check the line is tightened correctly. Its either leaking at the line to accumulator joint or the line may have a leak that is running down the length of line on the accumulator.
If it is a leak in the actual line, check all associated ABC lines as you may need to replace more than just that one. They often will start to weep before they leak and blow.
As noted above make sure the ABC reservoir DOES NOT run low or dry since you are losing fluid from the leak.
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Joined: Jul 2014
Posts: 1,270
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From: UNKNOWN
NB8 PARACHUTE
`
Start here ^^^^^^^
The front and rear accumulators are also called spheres
They are the same and share the same part number
2203270115
The return accumulator part number is
2203270415
How much is it leaking
`
Thats the rear ABC accumulator as you say. I would give it a clean up and see where its leaking, if its the line istelf, or if its leaking from the connection into the sphere.
The spheres themselves are one piece things so they cant leak themsleves unless severely damaged (which yours doesnt look).
It may be just that the dealer didnt torque up the connection correctly (hopefully!).
Do check your ABC fluid level now, as if its low the pump can suck in air and be damaged. Only use Pentosin CHF11S fluid to top up and ensure the tank and surrounding area is very clean.
The spheres themselves are one piece things so they cant leak themsleves unless severely damaged (which yours doesnt look).
It may be just that the dealer didnt torque up the connection correctly (hopefully!).
Do check your ABC fluid level now, as if its low the pump can suck in air and be damaged. Only use Pentosin CHF11S fluid to top up and ensure the tank and surrounding area is very clean.
Start here ^^^^^^^
The front and rear accumulators are also called spheres
They are the same and share the same part number
2203270115
The return accumulator part number is
2203270415
How much is it leaking
`
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Thread Starter
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Posts: 649
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From: Las Vegas
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The car is under extended warranty and the front/rear accumulators were replaced about 3-4 weeks ago.
Problem is the same dealer won't be able to take a look until 5 days from now.
Take a look at my new pic in this post for leak (2 quarters is first day, 1 quarter was since last night), seems minor. Can I continue driving it until then?
My ABC resoveir is at the correct level and is indeed green and noticed the resoveir had leaked, not sure if it's normal.
Problem is the same dealer won't be able to take a look until 5 days from now.
Take a look at my new pic in this post for leak (2 quarters is first day, 1 quarter was since last night), seems minor. Can I continue driving it until then?
My ABC resoveir is at the correct level and is indeed green and noticed the resoveir had leaked, not sure if it's normal.
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MBWorld Fanatic!
Joined: Jul 2014
Posts: 1,270
Likes: 160
From: UNKNOWN
NB8 PARACHUTE
Any leak no matter how small is not normal
And small leaks will usually become big leaks
over time and then you have a problem
How close is the dealership
Under warranty - Take (tow?) it in to the dealer
and leave it - and use their loaner car
Then the next step would be to check the fittings
as described in the above posts
Please keep this thread updated
Thank-You
`
MBWorld Fanatic!
Joined: Jun 2002
Posts: 1,284
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From: North Carolina
2003 S500 - Toyota Corolla (in the rain)
If the CL ABC system is designed the same as the S500 (I'm almost certain it is ) then there are actually four spheres. In addition to what COOPERDB stated the other part number is 220 320 04 15. It is often referred to as the pulsation damper. Looks like the one in the attached picture.
I would check and see if they replaced that one also.
I would check and see if they replaced that one also.
