Today I came across a smart man who is showing a camshaft locking kit to replace his bad VVT phasers. Instead of going the long-way of removing all top parts:

1. valve covers
2. fuel rails
3. fuel injectors
4. fuel pump
5. ignition COPs/plugs

super time saver for defective phasers

This $70 tool can lock the two chain sprockets together without stressing your timing chains. This is not WIS approved way, it's not approved tool used by stock procedure.

Jesus.... please don't reccomend this tool to members here Cali.

The tool holds the sprocket /VVT teeth and not the camshaft like the proper way.
When we tighten 130Nm to the oil valve of the VVT, if the sprocket teeths are the counterheld device, we are pushing 130Nm of stress to the VVT mini fragile locking pin.

Here is a slow-motion I made from Master Tasos video for you and others to understand.
Master Tasos in this video removed the locking pin , to show how VVT rattle happened between oil vane blade and the VVT sprocket body end stop at advance or retard.

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I have marked with dots and marker the moving parts for better visualization.
See how the VVT sprocket teeth can only move when and if the oil vane has reached it maximum travel or IF locking pin is there.
In a normal VVT, the oil vane get locked by the mini fragile pin when engine is OFF. In Tasos video the oil valve is replaced by bolt and nut, same function.

Spinning my V6 engine main crankshaft using hand is only 100Nm at the most at peak compression, divided by 5 items for the load :
4 of camshaft and 1 of oil pump.
The VVT itself the locking pin only experience no more than 23 Nm at best if I may guess.
Schaeffler Group document was indicating approx 10 Nm for camshaft torque to actuate intake/exhaust vaves,
perhaps it was a 6 cylinder engine and not V8 , also surely DOHC configuration. So per camshaft work load is less , with only 3 cylinders if V6 DOHC.

This is the very reason bad locking pin VVT can suddenly click on its own when one is spinning the main crank pulley by hand.
The locking pin can't hold strong enough due to wear on the female hole/bore or also the locking pin itself. This is hand spinning .

Imagine Idling RPM of cold start at 1,200RPM ish for first few seconds, that very same locking pin simply gave up until enough oil pressure supports the oil
chamber behind and in front of the oil vane and then the rattle goes away.



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Halo pak, @S-Prihadi, saya baru pertama kali ada w212 engine m272 ada 1 selang yang tidak tersambung, apakah bapak dapat membantu saya? Terimakasih sebelumnya pak 🙏

Hello Mas Sena,
I will do both language as courtesy to others.

Sebaiknya kamu buka post baru dan tanya soal selang yang tidak tersambung, dan kasih photo lengkap. Saya akan coba bantu.
Jangan mulai out-of-topic di post orang lain, tak sopan lah.

It will be best you start a new post and ask about the hose not connected and give complete photo. I wil try to help.
Please don't start out of topic post on someone's else thread, it is not polite.

Thanks
SP

I have created a thread for it and i hope @S-Prihadi can help me get through it, im sorry if i was bothering you guys in other person's thread, won't happen again, sorry for your inconviniences guys

Everything boils down to priorities and targets.

The lock tool shortcut is shown to work and has its place when you have no time for HPFP + Rails + Injectors + valve cover liquid gasket.

Torquing the VVT lock can be a concern when reinstalling a working VVT Phaser. The lock-pin see full 130Nm torque.
On the way out the failed units are less of a concern even if you refurbish them yourself.

The best move would be to unlock the phasers to bypass the lock pins.

However I bet the scheduled lock-pin failure can be disabled experimentaly given pressure to never lock after engine start.
Then no VVT headache!


MACAU circuit - Grande Primio 2025 AMG: this week!

Never ignore the rattling setup

Thanks for your understanding, your post been replied by other member and myself too

If removing the defective/bad VVT sprocket, yes that DANGEROUS-tool will help speed things up, and prevent the chain from being stressed... but removing bad one , you still have to install a good one.
Installing the good VVT sprocket with this DANEGROUS-tool is good enough if you want to sell your car and forget about it, hoping the VVT will last long enough to not come back to you as seller,
after all used car usually is an as-is basis.

But many of us here are long keeper of our aging W212, so this DANGEROUS-Tool is a big NO NO and has to be clearly explained as such.