C180 timing chain change

[alexdyer]

Hi from a previous post yesterday I have come to the gloomy conclusion that the chain is going to have to be changed.
Could anyone give me some detailed directions on the replacement procedure. I am a proficient home mechanic and known i will be upto it with a few helpful pointers.
Thanks in advance for any replies
Alex

 

[BlackC55]

Sign up to WIS and get full instructions.
Daimler AG - Service & Parts net

 

[alexdyer]

Sorry for my ignorance, what is WIS and where can I sign up for it?
Thank you
Alex

 

[someman41man]

Hi, i spotted a wis on eBay and was wondering has anybody used it and is it any good??

 

[BlackC55]

Click on the link

 

[horgantrevor]

here is a few pictures of the job

hi i hope you have stopped driving the car with that code and problem if you damage the cam cogs they will cost you 600 euro and they are both different not the same

 

[horgantrevor]

a few more pictures and tools need for the job

 

[alexdyer]

That is awesome! Thank you.I have just ordered a wis disk off of eBay for future reference! Will no doubt be getting back to you with a problem !
Regards alex

 

[keljon]

Ou of interest, why do you need to replace?

 

[BlackC55]

Have a look at his other thread.

 

[alexdyer]

Right I have got the new chain on and in exactly the same position as it came off however can someone look at my marks and tell me if they are ok?
I think that the exhaust cam may be a tooth off!
It all turns freely I haven't tried jumping the exh cam back a tooth.
These photos are before I replaced the chain.
What do you think?
Alex

 

[Alex Crow]

Yes, it does look like the exhaust cam is out - advanced a tooth seemingly.

Pointless without a new inlet cam sprocket though, isn't it?

 

[alexdyer]

Also stupidly I forgot to see what the sag in the new chain was like! Do you think this one was caught just in time?

 

[alexdyer]

I did think the sprockets looked in bad shape at all!
Please correct me if I am wrong.
I know they may be a little worn.
The car has only done 50k

 

[Alex Crow]

Sorry!

Getting my threads mixed up again, we had one with major tooth decay - not yours thankfully - they do look OK in the pics.

Did you get to the tensioner OK?

 

[alexdyer]

That was a section of the process that I am trying to forget . The picture of the replacement notes stated" remove alternator. Didn't really get me prepared for what was to come to actually remove it. My heart stopping moment was when the core plug dropped into the hole when I was trying to get to the tensioner! Am just very lucky I could get to it!
When re tensioning I take it I just tighten it right up and the tensioner does the rest?

 

[Alex Crow]

When re tensioning I take it I just tighten it right up and the tensioner does the rest?

That is pretty much it, no resetting on this one, 40nm torque.

Enjoy.

 

[alexdyer]

Do you thinking need to retard the exhaust cam a tooth?

 

[Alex Crow]

Do you thinking need to retard the exhaust cam a tooth?

On the basis of what I can see in your pictures - yes.

The rule of thumb is that the markings can seem slightly retarded, but never advanced. Your exhaust cam appears to be advanced.

 

[horgantrevor]

looking good how much was the kit
line up the marks and you cant go wrong


that old chain was nackered caught just in time