Mercedes Crankshaft pulley replacement, 4 methods of locking the pulley.

Serpentine belt squeaking noise? Mercedes Crankshaft pulley replacement (4 Methods)
Here is what you need to know, this is 3 weeks of me spending time trying to figure out way to remove this M272 harmonic balancer bolt...
Video Contents:
00:00 Intro
00:32 Belt noise cause
01:11 Testing Crankshaft pulley
02:36 Method 1: Crankshaft fixing tool
02:55 Method 2: Mercedes Flywheel locking tool
03:43 Method 3: Using belt to lock crankshaft pulley
04:43 Method 4: Using starter to remove crankshaft bolt
07:41 Mercedes Crankshaft bolt removal
09:35 Crankshaft pulley installation
10:28 M272 Crankshaft pulley bolt torque spec
11:20 No more serpentine belt noise...

[@BenzAddiction]

I spent almost 3 weeks of my free time to figure out ways of removing the crankshaft pulley, it was not easy but I am sure it will be easier for you after watching this video, let me know your experience. Cheers, Max.

[@nathanieljefferson803]

You my friend are a game changer. The only way I could undo it too. You really got me out of a pickle. Thank you

[@BenzAddiction]

Glad it helped you. 👍

[@Leonardo555ZZZZ]

Perserverance wins in the end. Well done. I have used the starter bump method on a Mazda 626 , but it was only 160 Nm. It worked well though with the breaker bar touching onto the ground to prevent movement.

[@BenzAddiction]

Yes Leonardo, I couldn't believe that starter method did not work.

[@allanriches9381]

great work Max , that is a lot of nm of torque, need a good torque wrench with a bloody big bar 😅

[@BenzAddiction]

Yes Allan, one of a kind bloody bolt 😀

[@Brian_L_5168]

I really admire your mechanical skill & creativity for removing it! What's your opinion on those MB repair manual showing multi step torque such as 200 NM + 90° angle in this case? Following those steps are impossible due to narrow work space limitation. When I replaced my W203 suspension strut, I applied blue loctite then tighten to the best I can feel 😅. Your crank bolt & my suspension bolts are simple bolts, not those torque-to-yield thing so it just puzzles me MB WIS always show complicated torque process !

[@BenzAddiction]

Hi Brian, yes, It is difficult to tighten this one to the specs, 200 + 90 is probably +500 NM, as my 500NM would not open this either...

[@nycklander]

Hi, I have a GLK 280 with the 3.0 M272, and recently it started the same squeaking at cold start. After warming up the engine, the noise disappears. After looking at the crankshaft pulley, I see it's kind of off-centered. I thought it could be some tensioner bearing, but watching your video, there's a chance the pulley is the culprit.

[@BenzAddiction]

Yes, make sure the belt is in a good shape first.

[@nancypoitras2217]

Thanks for this great video. what is the socket size for the pulley screw ? Cheers !

[@BenzAddiction]

27mm :)

[@gerhardbierman6354]

Hi I just watched your video on diagnosing a mercedes with a 38 pin. I have a w202 1996 c200 m111 engine. Do you have any more resources on the fault codes and pin layout.

[@BenzAddiction]

Sorry you have to google it.

[@CL500MBZ]

So scary

[@BenzAddiction]

Why?