Rear main seal
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Rear main seal
HI, got 01 ML55 rear main seal starting to drip oil in between engine and tranny.
Anyone have step by step how to do the job? and where is the best to get the seal? I know it requires to remove the Transmission, and i am ok with that. Thank you!
Anyone have step by step how to do the job? and where is the best to get the seal? I know it requires to remove the Transmission, and i am ok with that. Thank you!
Out Of Control!!
Joined: Sep 2018
Posts: 14,695
Likes: 4,586
From: unbegrenzt
2017 GLE350 4MATIC
These will get you started.
Transmission out
Drive plate off
Rear cover off
Then it seems like the procedure says the rear cover and the rear main seal are fitted as a single unit and both must be replaced. That sounds unusual. Hopefully someone with experience in this job can chime in.
In principle this look straightforward. As with all things MB there are tricky details that are critical. Torque specs, use of sealants and adhesives, careful cleaning and deburring, and single-use parts.
Transmission out
Drive plate off
Rear cover off
Then it seems like the procedure says the rear cover and the rear main seal are fitted as a single unit and both must be replaced. That sounds unusual. Hopefully someone with experience in this job can chime in.
In principle this look straightforward. As with all things MB there are tricky details that are critical. Torque specs, use of sealants and adhesives, careful cleaning and deburring, and single-use parts.
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
These will get you started.
Transmission out
Drive plate off
Rear cover off
Then it seems like the procedure says the rear cover and the rear main seal are fitted as a single unit and both must be replaced. That sounds unusual. Hopefully someone with experience in this job can chime in.
In principle this look straightforward. As with all things MB there are tricky details that are critical. Torque specs, use of sealants and adhesives, careful cleaning and deburring, and single-use parts.
Transmission out
Drive plate off
Rear cover off
Then it seems like the procedure says the rear cover and the rear main seal are fitted as a single unit and both must be replaced. That sounds unusual. Hopefully someone with experience in this job can chime in.
In principle this look straightforward. As with all things MB there are tricky details that are critical. Torque specs, use of sealants and adhesives, careful cleaning and deburring, and single-use parts.
https://www.ebay.com/itm/04Mercedes-...53.m1438.l2649
Member
Joined: Apr 2018
Posts: 223
Likes: 16
From: Bloomington IL
2006 C55, 2004 ML350
Make absolutely sure thats where its coming from. In my C55 (same motors as your ML55) I went to have the rear main seal swapped but it turns out it was the back of the valve covers leaking and dripping, making it look like the rear main. My own visual inspection wasnt enough, I had to do a clean and dye test to see the drip trail. Valve cover gaskets are the most common leak on the M113 engine.
If it is the rear main, make sure you get OE parts, not worth it to get something non OE from ebay and have to do it again.
If it is the rear main, make sure you get OE parts, not worth it to get something non OE from ebay and have to do it again.
Out Of Control!!
Joined: Sep 2018
Posts: 14,695
Likes: 4,586
From: unbegrenzt
2017 GLE350 4MATIC
Make absolutely sure thats where its coming from. In my C55 (same motors as your ML55) I went to have the rear main seal swapped but it turns out it was the back of the valve covers leaking and dripping, making it look like the rear main. My own visual inspection wasnt enough, I had to do a clean and dye test to see the drip trail. Valve cover gaskets are the most common leak on the M113 engine.
If it is the rear main, make sure you get OE parts, not worth it to get something non OE from ebay and have to do it again.
If it is the rear main, make sure you get OE parts, not worth it to get something non OE from ebay and have to do it again.
It’s cheaper and easier than replacing a rear seal that didn’t need to be replaced.
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Make absolutely sure thats where its coming from. In my C55 (same motors as your ML55) I went to have the rear main seal swapped but it turns out it was the back of the valve covers leaking and dripping, making it look like the rear main. My own visual inspection wasnt enough, I had to do a clean and dye test to see the drip trail. Valve cover gaskets are the most common leak on the M113 engine.
If it is the rear main, make sure you get OE parts, not worth it to get something non OE from ebay and have to do it again.
If it is the rear main, make sure you get OE parts, not worth it to get something non OE from ebay and have to do it again.
is there a seal on transmission side? wile i have tranny out maybe i can do that to?
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From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
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