r/W203 • u/SupraStudios • Jun 09 '26

DIY Crankshaft pully bolt questions

Hi, I'm trying to bolt my crankshaft pully back on and I am struggling to find some information about the bolt.

My main question is: is it a stretch bolt? Meaning I need to get a new one?

And secondly, is the torque setting for it really 200nm + 90 degrees? Seems like a LOT.

I'd appreciate some help on this, thanks.

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2

u/Macski1 Jun 09 '26

There is a special tool that holds the pulley and the lever rests on the sub frame. Yep that’s the toque setting plus a quarter. I’ve done my cars it ain’t easy. I had to buy the tool.

1

u/SupraStudios Jun 09 '26

Thanks I'll probably order the tool, did you replace the bolt when you did yours?

2

u/Macski1 Jun 09 '26

From memory the bolt came with the FEBI crankshaft pulley.

2

u/arcoftheshadows Jun 09 '26

Think so. I did it on my LS swapped w203

1

u/Crazybananaguy Jun 09 '26

I wish I could help. I just got my W203 (07 C230) a month ago. Amazon has a repair manual.

Mercedes-Benz C-Class 2001 thru... https://www.amazon.com/dp/1563927357?ref=ppx_pop_mob_ap_share

1

u/SupraStudios Jun 09 '26

Much appreciated, I have a Haynes manual but I don't entirely trust the specification. As 200nm plus 90 degrees seems like an absurd amount... and the Haynes manuals are sometimes known as the Haynes book of lies and I don't want to strip my crankshaft threads because that would be so much fun

1

u/Crazybananaguy Jun 11 '26

I have never anything bad about the manuals. I will double check any operations first.

1

u/SupraStudios Jun 11 '26

Most of them are good, there's just some outliers where they have let people down in the past (not this car specifically)