REMOVE/INSTALL CHAIN TENSIONER FOR MERCEDES GL 450 ENGINE 157, 276, 278 MODEL 166, Chain Tensioner
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- Опубликовано: 5 фев 2025
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Hey guys dont let this video fool you the most important part is not shown here and that is to set the timing correctly before pulling the tensioners. If you dont you will destroy your engine immediately. Just a warning for everyone, its a a few people that do the video on this so be careful.
Can you explain why to makes a defense
@@NANA-do9tw don't listen to that idiot. Has no idea what he's talking about
When replacing the tensioner timing chain never skips location on Gears why do you have to go to top dead center or 0
Why do you have to put timing at 0 that timing chain never skips T when you replace tensioners
@N/A N/A exactly
. Also that's why you do one tensioner at a time in order to not create excess slack on the chain in order to prevent jumping teeth. The only way it goes out of timing is if the chain skips a tooth on the sprocket
Another great video. Thanks for posting this. Very helpful and easy to follow
Hi Babu! Thank you so much for your feedback.
Awesome! I was so excited to see that you were able to do this without removing the thermostat or oil filter housing. Those are the things that were bothering me the most.
The other question I had, the instructions say you have to put the motor at 40°, but I never understood why? You're not messing or changing the timing at all, why does it matter?
Does the green plastix cover on the new tensioner come off or stays on? I took my old tensioner off and it had no cover?
How do I remove the existing check valves I removed the threaded piece that came out there seems to be a steel shim and the valve behind it have no idea how to remove it in order to install new ones your help is greatly appreciated thanks
Great video ill be doing this next
Great
While you were there, why didn't you replace the camshaft solenoids? Parts are not expensive and you can save $$$ on labor. Great video! Thank you!
You need to align the crank before removing the tensioner?....
Why do you need to set timing mark for removing tensioner Without rotating crank...?
Howcome you had the check valves but didn't install them?
The rattle did not get fixed at all when you started the car... was this after replacing the check valves? I was going to do this for a customer but it looks like after you replaced the adjuster and the valves it still did not resolve the issue
I'm pretty sure it was just priming up on the initial start. The rattle went away very quickly unlike with weak tensioners and lack of anti-drain valves.
Not necessarily it has to build oil pressure first you have to turn the cat crankshaft pulley for about 5 to 10 minutes to remove oil pressure and then start the car and then you will know if it's fixed the timing chain tensioner runs on oil pressure
And he didn't do the Mercedes-Benz bulletin on the check valves
Good video. My 276 engine front cover bolts are painted blue. So does that mean this procedure has been carried out.
Also am I right in assuming that the bolts are not blue from factory.
Blue from factory! Need to replace them with new ones !
Blue indicated it is torque spec from factory.
That didn't fix the rattle on startup at 26:58 Must be one of the camshaft adjuster going bad?
Probably needs a new chain at this point
Probably just needed a second for oil pressure to build up on first start. There's also a check valve behind the tensioner that can fail allowing oil to drain out of the tensioner when sitting causing rattle on start up.
Do you need to align the crank?
Amazing video…
Thank you!
Great video! Question- did you have to turn the motor to install the timing chain tensioner?
Place it on timing mark
@@euromastersauto 40 or 53 degree mark? Same mark for doing both sides?
@@euromastersauto do I have to place the timing a certain spot?? Please help
Question: after replacing these tensioners and after initial start, was the chain rattle completely gone. Even after cold start next day or after several hours? Thanks 😊
Can you repeat what was extended warranty on that engine?
The timing chain cover uses ONE TIME BOLT. They must be replaced when you take off timing chain cover.
I saw that there are new check valves. How come you did not replace them?
We did the video after we replaced the check valve.
@@euromastersauto I see. How did you take the old check valves out?
@@marccastro1834special tool needed but they will break
So I am seriously considering attacking this job on my 2012 CLS550 (M278.922) but not sure about whether my skills will allow it! I have successfully completed the spark plugs recently and seriously thought that was about as far as I can go. I see from your video you can do this job without removing the engine from it's bay. I also noticed the blue painted bolts on the chain covers and thought if your engine had these bolts it meant that this service bulletin was already carried out.
So I am. I think the passenger side is doable but the driver side will be tought. You will be dealing with clearance issues. Make sure you have all the tools needed. Let me know how it turns out. Good luck!!
Hello C.A.N, How did it go?
Why weren't the check valves replaced from what I understand those are the the biggest problem
AWESOME !!! 😀😀😀
Also they don’t show you check valve install and removing oil filter housing.
Do you have to re-do timing ?
Can u list the tools u used please
Mine rattles on the passanger bank
Should have turned the crankshaft pulley at least for about 5 minutes before starting at to build oil pressure and you would have not had that first startup rattle it would have built oil pressure into the timing chain tensioners and then and only then you will know the problem is that
How much this job cost including Labour ?
Don’t you have to align the crank when doing anything to the tensioner?????
Yes.You have to align the crank pulley.
@@euromastersauto on both sides? I heard the right side only.... is it both sides?
From what I understand the check valves are the biggest problem are they supposed to be changed at the same time as the tensioners
@@NANA-do9tw the whole check valve situation is that the early production m276, m278 etc. did not have check valves installed at all. I have one right now with lower miles, like 60k. if they have check valves installed it can be the tensioners are worn and bleeding pressure out. Also there is another rattle that is caused by the intake cam adjusters. 9/10 times its the bank 1 intake sprocket.
The question was how do you remove the old ones
How come you didn't show how to set the timing
It is advisable to set the timing, but not a must on this particular work
You biscuit!!!
Hahaha! Thank you too for your feedback.
@@euromastersauto where are you located?
I have a gl550
@@chicagosfinestremodelingin4469 We are located in North Brentwood, Maryland.
@@chicagosfinestremodelingin4469 Maryland,North Brentwood
Hey can you check my comment. Most recent post