S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

Water pump pulley wobbles 02 S600

Old May 13, 2013 | 08:26 PM
  #1  
flabbers's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2010
Posts: 25
Likes: 0
s600
Water pump pulley wobbles 02 S600

My car overheats when I got stuck in traffic so I guess I need to replace the thermostat, water pump and also at the same time the upper and lower radiator hoses.

Last time I heard the engine made noises I looked by the pulley and the pulley in front of the water pump wobbled. does this wobble caused by weak / bad water pump? Do you think I need a new pulley? Again there is no leak on water pump unless if it is small and unnoticeable.

Anyway I will replace the pulley and the serpentine / v - belt too because uneven contacts with pulley might damage it.
Reply
Old May 14, 2013 | 08:41 PM
  #2  
kraut56's Avatar
Super Member
 
Joined: Sep 2012
Posts: 690
Likes: 76
From: Montreal, Quebec
2009 E350 4M Avantgarde;mistress 2002 S600; wife 2014 C300 4M
Reading your post correctly: The bearing that can cause the pulley to wobble is inside the water pump.
So, change the water pump before changing anything else.
Reply
Old May 15, 2013 | 10:53 AM
  #3  
flabbers's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2010
Posts: 25
Likes: 0
s600
Will do, thanks much kraut56 you answered my question, but the genuine water pump pulley and the v belt last time I checked from mymercedesparts.com only cost me, if I remember correctly, $48 and $20. Sp good investment to throw those in too.
Reply
Old May 16, 2013 | 07:48 AM
  #4  
wallyp's Avatar
MBWorld Fanatic!
10 Year Member
Liked
 
Joined: Dec 2012
Posts: 2,474
Likes: 439
From: Ball Ground, GA (N of Atlanta)
2003 S500 2007 GL450
Not much that can go wrong in a short time with a properly-installed water pump pulley. I would check it before replacing.
Reply
Old May 16, 2013 | 08:06 AM
  #5  
Astro14's Avatar
Senior Member
Veteran: Navy
15 Year Member
Liked
Community Favorite
 
Joined: Dec 2010
Posts: 282
Likes: 66
From: Virginia Beach
2005 S600 2005 SL600
Replacing the v belt and pulley will require that you remove the upper radiator hose (drain coolant first) so that you can remove the electric fan.

With the v belt off, and the pulley exposed, you should be able to determine if your wobble is in the pulley or the pump itself. The pump isn't cheap...
Reply
Old May 19, 2013 | 05:47 PM
  #6  
flabbers's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2010
Posts: 25
Likes: 0
s600
Thanks for the answer Astro14, Wallyp. I am not mechanically inclined but would like to know what is wrong so I could get the right parts and have the indie do the work as needed - so I don't run to other problem in the near future.

So by any chance with 118k on the car do you think it will be good idea to replace the crank / harmonic balancer / vibration damper pulley as well? Fyi, the idler pulley replaced at 96k.

I got the Bosch water pump for $199.

Last edited by flabbers; May 19, 2013 at 08:31 PM.
Reply
Old May 20, 2013 | 09:11 PM
  #7  
Astro14's Avatar
Senior Member
Veteran: Navy
15 Year Member
Liked
Community Favorite
 
Joined: Dec 2010
Posts: 282
Likes: 66
From: Virginia Beach
2005 S600 2005 SL600
I've only owned this car for 6 months...so, my experience with the MB M275 engine is pretty limited...

I replace tensioners when I replace belts, especially timing belts, and serpentine belts like this one that are a real PITA to get at....and I take a good look at the other pulleys for condition, play, free spinning (no grinding/resistance) while I am in there...

But, I've only replaced one harmonic balancer in my life (which includes ownership of over 20 cars) and that was on a 200,000 mile Oldsmobile V-8 from the 70s...so, I wouldn't suspect a problem with that component.
Reply
Old May 21, 2013 | 02:41 AM
  #8  
flabbers's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2010
Posts: 25
Likes: 0
s600
Thank much for the info, one more less thing to be concerned about.
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

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

 Verdad Gallardo
story-1

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

 Verdad Gallardo
story-2

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

 Verdad Gallardo
story-3

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

 Verdad Gallardo
story-4

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-5

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-6

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-7

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-8

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-9

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
Old May 21, 2013 | 08:43 AM
  #9  
wallyp's Avatar
MBWorld Fanatic!
10 Year Member
Liked
 
Joined: Dec 2012
Posts: 2,474
Likes: 439
From: Ball Ground, GA (N of Atlanta)
2003 S500 2007 GL450
This is a pretty unusual failure on most vehicles. It does happen occasionally, but I doubt that it is worth buying one in advance, or replacing it "just in case".
Reply

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

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 11:42 AM.

story-0
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-1
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-2
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-3
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
story-4
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-5
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-6
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-7
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-8
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-9
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE