Transmission leaking
Thread Starter
Newbie
Joined: Mar 2024
Posts: 4
Likes: 4
W164 ML350 4MATIC
Transmission leaking
I had an issue with my 722.9 transmission but I was able to resolve it by swapping the conductor plate and valve body from another transmission. I was able to get it programmed to the vehicle and now that issue is resolved.
However, when I filled the transmission I put 7 quarts before starting the car, and now I have a pretty serious leak coming from the rubber bottom bell housing port.
Not sure if I over filled or over pressurized the system and blew a seal...
I'm not really sure if there is anything i can do/check before swapping the transmission.
However, when I filled the transmission I put 7 quarts before starting the car, and now I have a pretty serious leak coming from the rubber bottom bell housing port.
Not sure if I over filled or over pressurized the system and blew a seal...
I'm not really sure if there is anything i can do/check before swapping the transmission.
MBWorld Fanatic!
Joined: Jun 2014
Posts: 1,085
Likes: 442
From: Melbourne, Australia
2010 ML550 VIN WDC1641722A564750, 2010 B180
There's a very specific procedure to filling the trans to the right level. It requires the transmission to be filled, then warmed up to 45 degress celcius, and any excess to be removed. No excess means you haven't put enough in.
The leak is dripping from the torque converter area. The rubber plug you're referring to is the TC inspection hatch.
Follow the procedure below and youll be able to see if you've overfilled it and how to remove the excess.
There are plenty of good videos on youtube. See this one as an example.
The leak is dripping from the torque converter area. The rubber plug you're referring to is the TC inspection hatch.
Follow the procedure below and youll be able to see if you've overfilled it and how to remove the excess.
There are plenty of good videos on youtube. See this one as an example.
Joined: Nov 2016
Posts: 7,847
Likes: 3,496
From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Yeah, if you didn't follow the correct procedure, you probably overfilled the tranny. Hope you didn't blow any seals.
Did you follow the correct procedure?
Did you follow the correct procedure?
