Rear Crankshaft Rope Seal Replacement Without Removing Crank - PeachParts Mercedes-Benz Forum

Stretch · #1 05-15-2011, 05:12 AM

Interesting fix - thanks for sharing.

I see you used the crank and torquing it in place to position the seal in the groove whereas the FSM says to carefully roll into the groove...

...as I said in another thread (Rear main seal) I have been told by an engine builder here in the Netherlands that if this seal isn't seated correctly it can cause localised heating (due to friction) that can knacker the nearest main bearing.

Now I don't know for sure if that is gospel - but it is what I was told.

I would have re-lifted the crank after torquing to make sure it had seated nicely.

Let us know how it goes.

ROLLGUY · #2 07-27-2011, 12:37 AM

I finished the job a while back, and NO LEAKS!!! It was well worth the effort and expense to do the job right.

leathermang · #3 07-27-2011, 01:50 AM

Quote:

Originally Posted by Army

....I see you used the crank and torquing it in place to position the seal in the groove whereas the FSM says to carefully roll into the groove...

Army, I thought when he said this: "Use a 1/4 drive socket extension to force the seal in the groove, rolling it on the seal surface. " that he was doing what you refer to and the FSM says to do.........???

Stretch · #4 07-27-2011, 03:35 AM

Quote:

Originally Posted by leathermang

Army, I thought when he said this: "Use a 1/4 drive socket extension to force the seal in the groove, rolling it on the seal surface. " that he was doing what you refer to and the FSM says to do.........???

Pushing my rope seal in place took a lot of effort - the desire to rub is immense! Roll - don't rub!

Hats off to ROLLGUY for managing this with a 1/4" drive socket extension.

ROLLGUY · #5 07-27-2011, 10:01 PM

Quote:

Originally Posted by Army

Pushing my rope seal in place took a lot of effort - the desire to rub is immense! Roll - don't rub!

Hats off to ROLLGUY for managing this with a 1/4" drive socket extension.

The hardest part is forcing the seal into the pin. The rest of the seal rolls in quite easy with a thin round object (1/4" drive extension). You must also use assembly lube on the seal (making sure not to get any lube on the ends of the seal where the two halves join).