MBWorld.org Forums

SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: Pulsation Dampener

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jul 31, 2023 | 05:21 PM
Share
  #1  
imtheking's Avatar
imtheking
Thread Starter
Senior Member
15 Year Member
Liked
 
Joined: Apr 2007
Posts: 436
Likes: 79
Former R230, W220 and W221 owner
Pulsation Dampener
2003 Sl500

I finally got around to replacing the pulsation dampener today. I had a lot of trouble getting the wrench around the bolt to get it off. YT and online instructions stated a 24MM wrench is needed which I confirmed because it fit around the new repalcement part perfectly (before I installed it)

What was mind boggling is why I couldn't get the 24mm wrench around the dampener to get it OUT of the car. I had to use a 27MM which I still had to push in really hard to get it around the bolt and eventually got it off.

Once I took the dampener out, the 27MM was to large and the 24MM was a perfect size.

I didn't see the wrench hitting anything so I was banging my head trying to figure out why I couldn't get the wrench to fit around the bolt

Right now I have the new dampener installed but hand tightened because I can't find the right wrench to tighten it. Even adjustable wrenches wouldn't turn it

very confused....
Reply
0
Old Aug 1, 2023 | 07:34 PM
Share
  #2  
MojaveYZ's Avatar
MojaveYZ
Newbie
 
Joined: Apr 2023
Posts: 13
Likes: 3
SL600 R230
Can you attach some pics?
Reply
0
Old Aug 2, 2023 | 01:58 PM
Share
  #3  
Abebundance's Avatar
Abebundance
Member
 
Joined: Nov 2022
Posts: 124
Likes: 29
From: Celebration FL
2007 Mercedes SL55 AMG
You should be able to torque the pulsation dampener down on the top to 33.5ftlb or 45nm.
Reply
0
Old Aug 2, 2023 | 04:23 PM
Share
  #4  
imtheking's Avatar
imtheking
Thread Starter
Senior Member
15 Year Member
Liked
 
Joined: Apr 2007
Posts: 436
Likes: 79
Former R230, W220 and W221 owner
I will post pictures later today......I swear I'm not losing my mind.
Reply
0
Old Aug 2, 2023 | 04:25 PM
Share
  #5  
imtheking's Avatar
imtheking
Thread Starter
Senior Member
15 Year Member
Liked
 
Joined: Apr 2007
Posts: 436
Likes: 79
Former R230, W220 and W221 owner
Originally Posted by Abebundance
You should be able to torque the pulsation dampener down on the top to 33.5ftlb or 45nm.
"from the top"- please elaborate
Reply
0
Old Aug 2, 2023 | 04:30 PM
Share
  #6  
Abebundance's Avatar
Abebundance
Member
 
Joined: Nov 2022
Posts: 124
Likes: 29
From: Celebration FL
2007 Mercedes SL55 AMG
At least on my 07 55 there is a nut on top of the pulsation damper that you torque down. Can you post a pic of the pulsation damper on your car please?
Reply
0
Old Aug 3, 2023 | 02:28 PM
Share
  #7  
imtheking's Avatar
imtheking
Thread Starter
Senior Member
15 Year Member
Liked
 
Joined: Apr 2007
Posts: 436
Likes: 79
Former R230, W220 and W221 owner
You can see the 24MM wrench fits around the dampener just fine but when I install it, I can't get the wrench around the bolt.

In the pictures below, I tried with a 24MM and 25MM wrench and as you can see, it doesn't want to lock in








Reply
0

Trending Topics

Old Aug 4, 2023 | 02:11 AM
Share
  #8  
Tom Manning's Avatar
Tom Manning
Super Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2018
Posts: 746
Likes: 185
From: Melbourne, Australia
2005 SL 500 R230
It's 24mm for sure. You have to mill the spanner down a mm or two to fit over the alloy union. Use a linisher or belt sander if you don't have a mill.
Reply
1
MB World Stories

The Best of Mercedes & AMG

story-0

10 Coolest Mercedes-Benz Wagons of All Time

 Verdad Gallardo
story-1

New Mercedes-AMG SUVs Arrive With NEW V8 Engine: 12 Things You Need to Know

 Verdad Gallardo
story-2

8 Oddball Mercedes Ideas That Actually Made it to Production

 Verdad Gallardo
story-3

Dubai Tuner Gives the Mercedes G-Class An Entirely New Look

 Verdad Gallardo
story-4

Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

 
story-5

7 Craziest Things AMG Gas Ever Built

 Verdad Gallardo
story-6

New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

 Verdad Gallardo
story-7

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-8

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-9

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
Old Aug 5, 2023 | 11:14 AM
Share
  #9  
ParsleySL500's Avatar
ParsleySL500
Junior Member
 
Joined: Feb 2023
Posts: 19
Likes: 3
SL500
Wrench size
As shown in the last photo, the head of your wrench is too thick. You’ll need a thin 24mm wrench or grind one to proper thickness. If you grind, do so slowly and cool regularly to avoid altering the tempering.
Reply
0
Old Mar 29, 2025 | 03:50 PM
Share
  #10  
shannonscx10's Avatar
shannonscx10
Newbie
 
Joined: Mar 2025
Posts: 4
Likes: 0
Pressure bleeding?
Did you have to do anything to bleed off the pressure before removing the pulsation dampener?

I know that the front and rear accumalators need the car to be off the ground on jack stands and the bleed nipple needs cracked to release any residual pressure.

I'm worried abt just removing the pulsation dampener in case there's some pressure in the system.
Reply
0
Old Mar 29, 2025 | 06:10 PM
Share
  #11  
aegea's Avatar
aegea
Senior Member
5 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: May 2020
Posts: 458
Likes: 55
From: North Carolina, USA
2004 SL500AMG, 2003 SL500 USA
I use a pair of needle nose vice grips, and a cheater pipe to tighten.
Reply
0
Back to Subforum
SL-Class (R230)
View Next Unread
SL350 Gearbox Not Showing P & C in RH Display

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes, average.
Show Printable Version
Email this Page

Advanced Search

All times are GMT -4. The time now is 10:29 AM.

story-0
10 Coolest Mercedes-Benz Wagons of All Time

Slideshow: These estates prove you don't need extra ride height to have performance, style, and everyday usability.

By Verdad Gallardo | 2026-06-23 14:16:58


VIEW MORE
story-1
New Mercedes-AMG SUVs Arrive With NEW V8 Engine: 12 Things You Need to Know

Slideshow: Mercedes-AMG's updated GLE 63 S and GLS 63 bring a new-generation V8, subtle design revisions, and familiar supercar-rivaling performance figures.

By Verdad Gallardo | 2026-06-17 12:52:51


VIEW MORE
story-2
8 Oddball Mercedes Ideas That Actually Made it to Production

Slideshow: Mercedes has never been afraid to experiment, and some of its strangest ideas turned out to be surprisingly successful.

By Verdad Gallardo | 2026-06-10 17:43:40


VIEW MORE
story-3
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look

Sideshow: A Middle Eastern tuner has transformed the Mercedes-AMG G 63 into an open-top special, replacing nearly every exterior panel in the process.

By Verdad Gallardo | 2026-06-10 15:29:50


VIEW MORE
story-4
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

Slideshow: Six gift ideas your AMG loving dad or grad will cherish.

By | 2026-06-03 17:26:18


VIEW MORE
story-5
7 Craziest Things AMG Gas Ever Built

Slideshow: Sometimes AMG builds fast sedans. Other times, it builds twin-turbo V12 land missiles and six-wheeled off-road monsters.

By Verdad Gallardo | 2026-05-26 17:59:58


VIEW MORE
story-6
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-7
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-8
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-9
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE