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2012 E550 how to remove driver side turbo coolant lines
Hi, anyone has tips on how best to get to the driver side turbo coolant line bolts. Replacing both of the coolant lines and seeing what others have done.
Rule 2, learn how the component are placed in/around the engine
Find your component here : https://catalogs.ssg.asia/mercedes/?lang=en#
Sometimes the diagram can give some sort of "overall" view.
Rule 3, get good photo of the component
And then you google the component P/N at ebay, used one or new, often the photos are very incredible and useful to visualize your repair plan.
Rule 4, let us enjoy your repair progress. Take lots of photos, share know-how here. Don't just run off to be happy yourself, we wanna be happy for you too
Last edited by S-Prihadi; May 29, 2022 at 07:51 AM.
Reason: add info
But, how many miles on your E550? I assume you have a leak?
Yeah, the line broke off and started leaking. Know issue with these cars. I have about 113k on it. Good news though I did get the bolt loose last night.
Rule 2, learn how the component are placed in/around the engine
Find your component here : https://catalogs.ssg.asia/mercedes/?lang=en#
Sometimes the diagram can give some sort of "overall" view.
Rule 3, get good photo of the component
And then you google the component P/N at ebay, used one or new, often the photos are very incredible and useful to visualize your repair plan.
Rule 4, let us enjoy your repair progress. Take lots of photos, share know-how here. Don't just run off to be happy yourself, we wanna be happy for you too
Thanks for the videos, you name it and I watched it so very familiar with the setup. Was curious around what others used to loosen that one bolt at the turbo. I did figure it out and just a slight turn was needed to loosen it. But then getting the lines to pop out of the turbo was another challenge.
The diy is all about having the right tools. Will post pictures below to help others out.
I do have one more task left... How best to get the lines out. I could break them but need to figure out best way to put back in so seeing how best to take it out first.
Small socket with a turn And long extension. Used a screwdriver for the bottom to get enough space to put my prybar in. Picture of first one out.
Had two setup to loosen the bolt. First option with the extension and turn worked out.
Not much room between the socket and the heat shield plate.
i did the pass side one. took like an hour or 2 just to get it installed. not sure how much the drivers side differs but youll have to get creative with the tools.
I did get most of it put back together tonight and should be able to start the car tomorrow.
What a pain, starting with putting the new lines back in. Then took few hours to put the screw back in the turbo to connect both of the lines. Had to customize a socket by grinding it and that worked great along with the 8mm wrench to start the screw that goes into the turbo.
Not sure if I would ever do this project again
What I used to start few of the threads to get the bolt started. Grinded the scoket for a bit more space. Make sure to put a towel Incase you drop anything.
M278 turbo coolant lines and M157 seems to have same issue.
Next M276 3.0TT (mine) probably will have the same faith.
One of my turbo coolant lines has plastic on its end too.
The item 40 is where there is a plasctic end, A Tee actually.
For a 2 weeks now, I been and is still cataloging what I need to replace by 10th year, due my my fear of melting down the engine from loss of coolant and/or engine oil, caused by either plastic or rubber material failure.
Based on your experiences with M278 because it is turbocharged like the M276 3.0TT, what do you guys worry/anticipate most for such failures I too am fearing ?
M278 been around longer, so many has reached 10 years by now right ?.....and many valueable info for me.
M278 turbo coolant lines and M157 seems to have same issue.
Next M276 3.0TT (mine) probably will have the same faith.
One of my turbo coolant lines has plastic on its end too.
The item 40 is where there is a plasctic end, A Tee actually.
For a 2 weeks now, I been and is still cataloging what I need to replace by 10th year, due my my fear of melting down the engine from loss of coolant and/or engine oil, caused by either plastic or rubber material failure.
Based on your experiences with M278 because it is turbocharged like the M276 3.0TT, what do you guys worry/anticipate most for such failures I too am fearing ?
M278 been around longer, so many has reached 10 years by now right ?.....and many valueable info for me.
Thanks guys....
Yeah I was lucky mine happen as I pulled out of the garage and saw bunch of coolant on the ground. First I thought it was the water pump but no noice and after starting you could see the fluid dripping from the line.
My second line broke trying to take the first one out.
Mine is 2012 with 113k Miles so this was due to happen as it's very common. Didn't know that until it happened and did some research.
I did get the car running so the beast is alive again after being down for 5 Days. Mainly due to dealer closed on the holiday weekend.
Up next fix the rear air bag issue but that will have to wait few weeks.
Indeed lucky you leak not at high speed use...and if leak still small it is lucky nevertheless.
Loss of coolant and engine oil alot and suddenly = bye bye engine
Indeed lucky you leak not at high speed use...and if leak still small it is lucky nevertheless.
Loss of coolant and engine oil alot and suddenly = bye bye engine
Hence the reason to watch the gauges and messages. After I did the thermostat last year on this car, I didn't have the hose connected correctly and while driving I got a message for coolant low and then a red message to immediately shut the car which I pulled over and did.
Question, for those with garages, do you open your hood, and let the engine cool off.
I do it with mine everyday. When the car is in motion heat leaves pretty quickly (plus the fan), but off and stationary it can not be good for the plastics.
I even stick a fan to suck hot air out I think I showed my set up a while back.
Hello S-Prihadi. I have this same issue and having trouble getting the lines back in. Getting the lines out of the side of the turbo was a pain. I broke the line off of the connection to give my self more space. Now I dont seem to have enought space to install the new lines. What did you need to take off to route the lines back into its space? The only way I see them going back in is disconnecting the AC line, but I dont have an Freon extractor. Help!! lol
Hello S-Prihadi. I have this same issue and having trouble getting the lines back in. Getting the lines out of the side of the turbo was a pain. I broke the line off of the connection to give my self more space. Now I dont seem to have enought space to install the new lines. What did you need to take off to route the lines back into its space? The only way I see them going back in is disconnecting the AC line, but I dont have an Freon extractor. Help!! lol
I do also remember running into this issue and was a pain in the behind to get the line back in. I think the oil line clip I had loosen to move them around and I believe I had removed the radiator hoses to get more room.
I know I didn't remove the AC line so it's doable. Just takes time to try all different options.
Hello S-Prihadi. I have this same issue and having trouble getting the lines back in. Getting the lines out of the side of the turbo was a pain. I broke the line off of the connection to give my self more space. Now I dont seem to have enought space to install the new lines. What did you need to take off to route the lines back into its space? The only way I see them going back in is disconnecting the AC line, but I dont have an Freon extractor. Help!! lol
Are you speaking of M278 engine, or my engine M276 3.0 TT ? Your car is E550, so it is M278
I do also remember running into this issue and was a pain in the behind to get the line back in. I think the oil line clip I had loosen to move them around and I believe I had removed the radiator hoses to get more room.
I know I didn't remove the AC line so it's doable. Just takes time to try all different options.
Originally Posted by S-Prihadi
Are you speaking of M278 engine, or my engine M276 3.0 TT ? Your car is E550, so it is M278
Yes I do have a M278. From the pictures the area looked identical to my car. Maybe it is different.
Yes I do have a M278. From the pictures the area looked identical to my car. Maybe it is different.
Originally Posted by S-Prihadi
M278 engine is big and made engine bay so crowded, I feel your pain man
I finally got it done. Had the hire a AC tech to remove the refrigerant, which allowed me to remove a AC line. Than I had to get the fan. Not sure if its the same as other models without LED headlights, but getting the fan out includes removing the bumper and unbolting the headlights. After all that, I had just enough room to swivel the new lines in. Took my time putting everything back together. It made me feel good, getting this job done but I almost gave up a few times.
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