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 09-02-2005, 11:23 AM
dieselbeagel's Avatar
Registered User
 
Join Date: Nov 2003
Location: California
Posts: 334
93 300D 2.5L (602) R&R Timing Chain

I finally finished replacing the timing chain in my car.

I want to thank Sixto for his immense help and patience in helping me with the task.

I replaced the timing chain, tensioner, cam sprocket and timing chain guide.

1) Remove the cross over pipe

2) Remove the cam cover - ( bolts tighten to 10Nm when replacing)

3) Remove chain tensioner - new one seems to be made of some brass alloy. To prepare the new chain tensioner, place the plunger ( vertical with plunger end ) into a small container of engine oil (10W-30 or 40 works). Push on the tensioner while plunger end is in oil, until it starts to move easily. I had Sixto hold the tensioner while I gently stepped on it. It required about 7 pushes with my foot before the plunger moved easily.

4) It is prudent to replace the plastic timing chain guide that is at the top right ( when facing the engine from the front of the car ). This should be the first task. The reason for this is that the cam sprocket has to come off to R&R the guide. We realised this after we finished replacing the timing chain and cam sprocket. The guide is held on by 2 dowels. One dowel is used as a pivot for the spring tensioner, and the other is just above the vacuum pump. We used the bolt and washer method to remove the dowels. The dowels take a 10mm bolt, same size as the cam cover bolts. It was a job getting those dowels out and back in !!!

5) The cam sprocket goes on in one direction. There is a small hole on the cam sprocket, where a small dowel on the cam shaft fits. Look at the sprocket u r removing and compare it to the one u have. Mark the chain and location of the link on the sprocket. The cam sprocket is held on the camshaft by a 13mm - 12 point bolt. Using a big screw driver, to lock the sprocket, remove the bolt and thick washer. Remove the old sprocket replace with new sprocket. Once again lock sprocket and tighten to 25 Nm. Then tighten the bolt 90 degrees. We marked the bolt with a punch and tightened it until the dot moved a quarter circle.

6) Grind off 1 chain link and punch out 2 metal dowels. Link with new chain and roll chain around until the 2 ends meet. I borrowed a chain crimper from Steven Snellings, a forum member. I must say that u really would be much better off using an MB chain crimper. Thanks Steven!

7) On the 602, the manual says to move flywheel until it is at 0T. Then put on new tensioner and tighten to 80 Nm

8) Put all other parts ( cam cover, spring tensioner, cross over pipe etc )back in place.

Started the car and it sounded good. I used to have some white mist and engine shudders when starting the car cold. That has disappeared.

As GSXR has posted sometime back - MB has a TSB on 93 300D 2.5L - stating that they have defective chains. MB advised replacing the chain, tensioner and sprocket.

It has made a world of difference. I want to once again thank Sixto for all his help and guidance.

Reply With Quote
  #2  
Old 09-02-2005, 01:40 PM
Registered User
 
Join Date: Aug 2005
Location: Charlotte, NC
Posts: 274
93 300d

I'm sure glad to have you on my side beagle..I too own a '93 300D...I want to stay in touch with you...I only use my 300D for long trips since it is not my primary car for transportation..Just bought a topside oil changer...and just replaced the antenna mast with information from this site. I sell real estate in Florida but find it lots of fun working on this car when the need arises. Love this diesel. I was trained as a machinist at an early age and my grandfather was a diesel mechanic but never found it necessary to learn his skills while growing up...but grandpa dna seems to kick in with an uncanny ability to understand the diesels...I could afford to have others work on this car but really enjoy putting the latex gloves and getting them dirty.lol
Reply With Quote
  #3  
Old 02-02-2017, 09:42 PM
Registered User
 
Join Date: Feb 2017
Location: SE Michigan
Posts: 312
where can the timing chain kit be purchased?

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
1987 190E 16V Timing Chain Replacement Jim Herold Tech Help 3 05-04-2005 03:50 PM
a couple of questions on head removal MarkM Diesel Discussion 14 02-13-2002 11:43 AM
300D timing chain check duChemin Tech Help 4 08-13-2000 06:18 PM
Timing Chain Nightmare darius Tech Help 12 07-19-2000 05:31 PM
'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 05:57 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page