Mercedes SL55, SL500,R230 Replacing new valve stem seals without removing the Cylinder Head -PART 5

[@typetbg]

just did mine on a 2006 ML 500 with the m113 engine, absolutely no need to mess with ropes or air compressors, just make sure you rotate each piston to TDC while changing the seals. I used a thick cable tie inserted in the spark plug hole to check for TDC. Once you do this, the valves can only go in like 1-2 cm before contacting the piston and the valve stem sticks out at least 2-3 cm, zero chance to drop it inside the cylinder. It's very important to hammer the tops of the valves to loosen the keepers before you remove them, they tend to be kinda stuck and reduce the chance to bend the valve while pressing the spring to remove the keepers.

[@wakko0hakko]

This is amazing! Thanks so much - I have watched this series countless times as I prep to do seals on my M272. May I ask why you did this work and did it solve it? Burning oil? How many miles on engine? Thank you.

[@iingush06]

Would this be same process for cls55?

[@tylerhayles]

Did you not have to worry about the timing etc when you removed the cam shaft bridge? Or do you only have to worry if you remove camshaft?

[@typetbg]

no, just be careful and watch the camshaft not lifting on the rear side since the chain tension is keeping the front end pressed inside the bearing surface.. i don't think it's possible to lose timing but just peace of mind

[@Weldeddiff]

What type of tool is that ?

[@androiduser5778]

is that rust on the springs??

[@mrkongsimr]

Hi ís it normal for am113 to have a lifter rumble at idle with only 25k ? Thanks

[@jasonst5688]

It is possible. I bought a CLS500 from japan with only 60.000km. It has really bad lifter noise from the left cylinder bank. The car wasn't properly used for at least 3 month and was on the boat for 6 weeks not running. Not sure if one of those facts caused the issue. But those cars are around 15 years old. Things like that can happen.

[@mrkongsimr]

@@jasonst5688 Thank you Jason !!

[@taleb1175]

Can you update us if everything was successful after install? Did the seals fix your oil burning and consumption problem? Thanks.

[@kalsingh11]

This procedure improved the oil consumption and improved the smoke at idle. But did not cure the problem entirely. If I was doing this again, and considering most of the parts were removed anyway, I would remove the head and have new valve seats and recondition the head.

[@adamczyk7006]

Hello. I have the same issue, and I want to try you method to change the seals. My car is a 2003 w211 E500 with m113 engine (without suppercharger). I would like to ask you, what was the reason of that the one of the valves has almost falled down inside the engine? I couldn’t understand that because of my poor english. I would be glad with your reply. Thanks in advance !

[@kalsingh11]

The car was burning to much oil with some smoke at the exhaust. Replacing the valve oil seals improved the oil consumption. In addition I the car was running to rich due to over fuelling, this turned out to be a faulty fuel vacuum switch located a very distance from the fuel tank near the rear axle. Car is running much better now.

[@kalsingh11]

The rope stops the valve falling into the engine. If it did, then you would have to remove the head assembly

[@adamczyk7006]

@@kalsingh11 do you remember how long was the piece of rope you used? And should the piston be set to the top dead center ? Or just near it? I think that if you put to much rope in it it wont allow the piston to go to its highest point. Did you remove all the spark plugs first? And did you lock the engine somehow to prevent piston going down when pushing the valve ? Like engine would turn back a little bit? Of should i not worry about that?

[@kalsingh11]

@@adamczyk7006 you need as much rope that you can get in. Yes remove spark plugs. Don’t worry about dead centre. You just need to push piston up enough to hold valve up. Turn the engine from the crankshaft pulley bolt.