Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-10-2007, 09:43 AM
muleears's Avatar
Old MB Driver
 
Join Date: May 2006
Location: Windsor, VA
Posts: 1,435
Belt tensioner question on 606

I need to change the tensioner shock on my 98 W210. My question is how do you take the tension off the spring to remove the bolt that anchors it? I know to put the lug wrench in the hole and apply pressure but it will not move until that bolt is all the way out. Am I just applying pressure so I can get the bolt out or for another reason?

TIA

__________________

Muleears
'07 E320 Bluetec 133K my DD
'04 Jaguar XJ8 VDP, 34K
'10 Hyundai Accent 60K Grocery Getter
'02 VW Golf soon to be on the road again
'97 E300 Diesel Son's DD
'61 VERY tolerant wife

Hampton Roads, VA USA

Gone but not forgotten:
'67 250S 95K
'86 300SDL
'87 300D Turbo, 364K! R.I.P.
'98 E300 Turbodiesel, 213K
'02 S420, 164K
'01 Prius 138K
Reply With Quote
  #2  
Old 09-10-2007, 10:09 AM
Registered User
 
Join Date: Apr 2007
Location: UK
Posts: 357
You need to take the bolt out

Take the nut off the back of the bolt that goes through the upper spring retainer. Using a 3/8" extension bar, rock the upper spring retainer to allow you to remove the bolt completely.

When you release the load on the 3/8" extension bar, the spring force is relaxed.

It's been a while since I took the tensioner apart on mine to replace the idler roller, but, do you actually need to release the belt tension to replace the damper? Isn't it just a case of releasing the upper and lower through bolts?
Reply With Quote
  #3  
Old 09-10-2007, 10:32 AM
uberwgn's Avatar
Registered User
 
Join Date: Jul 2005
Location: New England
Posts: 979
__________________
1998 W210 diesel (wiped out by a texter)
Baum spring compressor "for rent"
Reply With Quote
  #4  
Old 09-10-2007, 11:17 AM
muleears's Avatar
Old MB Driver
 
Join Date: May 2006
Location: Windsor, VA
Posts: 1,435
The bottom bolt is behind the water pump pulley. I need to rotate the arm upwards so I can back the bolt all the way out. Thanks for the clarification.
__________________

Muleears
'07 E320 Bluetec 133K my DD
'04 Jaguar XJ8 VDP, 34K
'10 Hyundai Accent 60K Grocery Getter
'02 VW Golf soon to be on the road again
'97 E300 Diesel Son's DD
'61 VERY tolerant wife

Hampton Roads, VA USA

Gone but not forgotten:
'67 250S 95K
'86 300SDL
'87 300D Turbo, 364K! R.I.P.
'98 E300 Turbodiesel, 213K
'02 S420, 164K
'01 Prius 138K
Reply With Quote
  #5  
Old 09-10-2007, 11:26 AM
Registered User
 
Join Date: Dec 2004
Location: Nashua, NH
Posts: 3,956
Quote:
Originally Posted by muleears View Post
The bottom bolt is behind the water pump pulley. I need to rotate the arm upwards so I can back the bolt all the way out. Thanks for the clarification.

Yes, and if you are VERY lucky you can extract that bolt without having to remove the fan. On my car it was the tightest of fits. I have heard on some it is impossible to remove without the extra step. It would have been better to grind off a thread or two of the bolt before I put it back in to help it fit and come out easier the next time but I didn't do it...FYI
__________________
Marty D.

2013 C300 4Matic
1984 BMW 733i
2013 Lincoln MKz
Reply With Quote
  #6  
Old 09-10-2007, 12:19 PM
uberwgn's Avatar
Registered User
 
Join Date: Jul 2005
Location: New England
Posts: 979
Yeah, I'll agree with Marty. There is no way that bolt was coming out on my car without additional disassembly. It would be too easy, otherwise
__________________
1998 W210 diesel (wiped out by a texter)
Baum spring compressor "for rent"
Reply With Quote
  #7  
Old 09-10-2007, 03:29 PM
Parrot of Doom's Avatar
1997 W210 E300TD 243,000
 
Join Date: Mar 2006
Location: Manchester, UK
Posts: 983
Easy to get the bottom bolt out on mine. Yes it rubs against the flywheel, but not enough to cause any damage bar minor scraping.

Oh by the way, if you're replacing the shock it might be a good idea to have a new spring ready. Mine snapped off while driving.
Reply With Quote
  #8  
Old 09-10-2007, 03:34 PM
Registered User
 
Join Date: Dec 2004
Location: Nashua, NH
Posts: 3,956
Quote:
Originally Posted by Parrot of Doom View Post
Easy to get the bottom bolt out on mine. Yes it rubs against the flywheel, but not enough to cause any damage bar minor scraping.

Oh by the way, if you're replacing the shock it might be a good idea to have a new spring ready. Mine snapped off while driving.

I'd strongly agree with the suggestion about the new spring...I put one in as PM when I did the dampner on mine and kept the old one in the trunk just in case...it's not an expensive part nor hard to change on the side of the road but one that can leave you stranded if it fails.
__________________
Marty D.

2013 C300 4Matic
1984 BMW 733i
2013 Lincoln MKz
Reply With Quote
  #9  
Old 09-10-2007, 04:16 PM
Registered User
 
Join Date: Feb 2004
Location: Walnut Creek, CA & 1,150 miles S of Key West
Posts: 4,874
The lower bolt on my damper shock backs out *just* enough on mine to get the damper off. You do have to rotate it down below the lip of the waterpump/fan pulley.

If yours won't, try tightening it up again and filing 1mm off the end of the bolt sticking through the other side then give it another go.
__________________
Terry Allison
N. Calif. & S. of Key West

09' E320 Bluetec 77k
Reply With Quote
  #10  
Old 06-21-2008, 12:09 PM
Registered User
 
Join Date: Jun 2008
Location: Pennsyltucky
Posts: 431
I just bought a 95 300 diesel and after 800 miles there is a squeeking which I am 90% sure is the tensioner. I've been reading some threads here and got some tips on the best way to replace and I was thinking I would replace all the parts including the shock.

How much can I expect to spend in parts and is there any one component that I can get away with not replacing (spring)?
Reply With Quote
  #11  
Old 06-21-2008, 12:24 PM
Registered User
 
Join Date: Feb 2004
Location: Walnut Creek, CA & 1,150 miles S of Key West
Posts: 4,874
The spring doesnt usually make noise other than a vibration sound caused by a bad damper shock or other component.

Costs can be found n the buy parts tab above but are roughly:
spring $30
damper $60
roller pulley $60?
pivot arm $100

If the insides of the pivot arm wear, it can squeak as can bad sealed bearings on the roller pulley or a failing bushing on the damper shock.

You can confirm by dropping tension on the belt and running the COLD engine for 30 secs to see if the sound disappeared, if so then spin the roller pulley by hand to see if it is the cause. If not, spin every other accessory pulley by hand.
__________________
Terry Allison
N. Calif. & S. of Key West

09' E320 Bluetec 77k
Reply With Quote
  #12  
Old 01-11-2011, 05:49 PM
Registered User
 
Join Date: Sep 2009
Posts: 18
Can you adjust the tensioner shock?

I am getting a terriple ratteling sound. When I put a pry bar underneath the tensioner shock and pry upward, the sound goes away, completely. I was wondering if I could take the top bolt out of that tensioner shock and turn the tube, would that shorten the tube, therefore, being the equivilant of the pry bar.

Thanks

Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 10:51 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page