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 ShopForum > Technical Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 08-11-2000, 12:07 PM
Registered User
Join Date: May 1999
Posts: 11
I want to have the timing chain wear/stretch checked on my '81 300D (123 130 model with 617 engine). Our local dealer and another MB shop say it can't be done (probably just don't want to fool with it) but MB tech rep told me on the phone the instructions (28 steps) are in the service manual. (I know from past Shop Forum messages that this job can be done and should be done when have valve cover off to adjust valves.) I have a mechanic now who can and will do the job but he needs the instructions (they aren't in his Haynes book). Anyone have these who would email or fax me a copy? Thanks.
Reply With Quote
Old 08-11-2000, 02:27 PM
Posts: n/a
I did it not too long ago on my daughter's car. It's quite simple.

With a 27MM socket, the injector socket works great, turn the crankshaft clockwise to TDC slowly. With the valve cover removed, the marks on the camshaft and front bearing pedestal should line up. If the mark is not in sight, turn the crankshaft one more full turn clockwise slowly to TDC. If the mark is off much more than a degree or so, you can worry about it. If the oil has been changed frequently, which keeps the particulate matter out of the chain, you should not see any stretch.

It is not wise to turn the crankshaft at all counterclockwise, this will be turning against the rails. When I say clockwise or counterclockwise, I mean as you are standing in front of the car looking at the engine.

Good luck,

Larry Bible
'84 Euro 240D, 523K miles
'88 300E 5 Speed
'81 300D Daughter's Car
Over 800,000 miles in
Mercedes automobiles
Reply With Quote
Old 08-11-2000, 02:54 PM
Registered User
Join Date: May 1999
Posts: 11
Thanks, I'll pass your message along to my mechanic.
Reply With Quote
Old 08-11-2000, 08:15 PM
Jay Jay is offline
Registered User
Join Date: Aug 2000
Location: Breinigsville,Pa.
Posts: 299
duChemin, Please don't do what I did. I checked my chain and had about 6degrees of strech and ordered a new timing chain but I broke my foot and didn't get around to putting it on. When the chain broke, at 60MPH, it broke my cam into four pieces and broke two of the cam bearing towers. I'm going to pull the head this weekend and I"m not sure what I'll find.My 83-300D had 241k miles on her and the PO and I always gave her regular oil and filter changes.
Reply With Quote
Old 08-13-2000, 06:18 PM
Posts: n/a

Regular oil changes, or frequent oil changes? There's a difference.

Good luck with what you find after removing the head. Keep us posted.

Reply With Quote


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Info on how to replace timing chain tensioner & upper chain guide bodyart27 Diesel Discussion 11 10-15-2003 04:53 PM
W123 '81 300D timing chain check instructions duChemin Mercedes Used Parts For Sale & Wanted 0 08-11-2000 11:24 AM
'84 300d timing chain replacement cost joegolden Tech Help 3 05-04-2000 10:17 PM

All times are GMT -4. The time now is 04:37 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, 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