Auto Trans Rear Seal Replacement Question
Thread Starter
MBWorld Fanatic!
Joined: Mar 2008
Posts: 3,714
Likes: 56
From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
Auto Trans Rear Seal Replacement Question
I have a couple of months to go before my car is out of warranty so did an complete inspection .
There is a slight weep from the 5 speed 722.64 rear auto box seal The MB mechanic will change it out in the coming weeks.
I am interested to know what is involved in changing out this rear shaft seal ?.
ie Does the GB as a whole come out?.
Is the oil drained out completely. ?
I my experience in heavy engineering if a new oil seal leaks there could be:-
Problems with the seal manufacture/ quality.
Shaft misalignment or runout.
Burrs , roughness or poor machining on the running faces.
Comments welcome.
There is a slight weep from the 5 speed 722.64 rear auto box seal The MB mechanic will change it out in the coming weeks.
I am interested to know what is involved in changing out this rear shaft seal ?.
ie Does the GB as a whole come out?.
Is the oil drained out completely. ?
I my experience in heavy engineering if a new oil seal leaks there could be:-
Problems with the seal manufacture/ quality.
Shaft misalignment or runout.
Burrs , roughness or poor machining on the running faces.
Comments welcome.
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Carsy - it's a minor replacement and not common
See
https://mbworld.org/forums/c-class-w...-pan-area.html
See
https://mbworld.org/forums/c-class-w...-pan-area.html
Thread Starter
MBWorld Fanatic!
Joined: Mar 2008
Posts: 3,714
Likes: 56
From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
Carsy - it's a minor replacement and not common
See
https://mbworld.org/forums/c-class-w...-pan-area.html
See
https://mbworld.org/forums/c-class-w...-pan-area.html
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Very little chance - mine is bone dry after 7 years. Had the car serviced last week & we did the transmission flush & filter change. It is not a common leak. Obviously get the mechanic to just check the prop flange seal running surface for a nick or whatever. I think you just got unlucky. The 722.6 is a mature transmission & will do huge mileage trouble free if serviced every 60,000Km. I mean 600,000 to 800,000Km comfortably from experience.
