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Old 08-29-2013, 07:42 PM
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Join Date: Aug 2013
Location: Ohio
Posts: 1
timing chain

I am getting ready to replace my timing chain on my 1985 300d (251k miles). I bought it with 247k and dont know if it has ever been changed. Does anyone know if there is a way to tell if the factor chain has been changed? I have a new chain already but what else should I replace while doing the job? Also where can I rent a chain crimper so i dont have to buy it for a one time use?


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Old 08-29-2013, 10:58 PM
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Join Date: Jun 2011
Location: Las Vegas, NV
Posts: 348
Welcome to the forum

The master link of a replacement chain in usually blue in color, while the chain it self is gray.
If you find a blue link in your chain is was replaced.
Chains installed at the factory are endless, they have no master link.
Even if you find a blue link, you don't know when the chain was installed.
I would recommend replacing the chain, given the fact that you have a new one already.

If your 85 is a turbo you have to remove the chain tensioner.
You need a new gasket for the tensioner and probably a valve cover gasket.
Also the spring inside the tensioner should be replaced.
If it is a non turbo you can leave the tensioner in.

You may be able to rent a crimper in the tool loaner section of this forum.

76 240 D. Bought in 1998 for $25.
85 300D. Got it for free with a bad engine. ( Sold )
60 Unimog 404. What was left of it, was given to me. Now powerd by 617A.
88 560 SEL. Bought without engine and trans. Now powerd by 617A.
67 250 SE. Cuope. For resto or sale.
64 220SE. For resto.
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Old 08-29-2013, 11:04 PM
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Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,585
Welcome to the Forum Benny, hope to see you around for a long time.

Did you check the Chain stretch? here is a good article on that.

PeachPartsWiki: Measuring Timing Chain Stretch

I haven`t replaced a chain as of yet but know how to break one and what that sounded like.

Here is a good thread that Cell did a couple years back.

9 degrees of chain stretch

Here is Diesel Giants how to on the chain replacement.
How to Replace Your Timing Chain

There is also the rental program here on the forum. maybe some one has the tools you need.
Tool Rental Program - PeachParts Mercedes ShopForum

Diesel Timing Chain Thread.
Diesel Timing Chain Thread

Hope this helps.

there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
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Old 08-30-2013, 03:07 AM
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Join Date: Sep 2009
Location: Somewhere in the Netherlands
Posts: 14,461
...and don't forget to check behind the camshaft cog for an offset key!

1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior

Don't leave that there - I'll take it to bits!
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