A hypothetical situation that needs input.
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Joined: Feb 2009
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From: NJ
A hypothetical situation that needs input.
What kind of damage would result in the failing of the crank pulley breaking off the key way and falling off? Worst case I would assume from being here and reading minimal threads on this topic replace the whole engine... Best case, replace crank pulley and install new key way.... Need more input to this situation as it seems to be a dark void around here and it always results in someone arguing faulty install/bad crank pulley. I'm not here to try to figure out why crank pulleys sometimes fall off... I'm here to gauge some input into what can result after a crank pulley comes off our cars and obviously ruins the key way. Thanks in advance, please post some input.
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Joined: Dec 2007
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From: Treasure Island, FL
GLE 63S
From my experience even at a slow speed if the crank bolt backs out the keyway is most likely going to shear off and score the crank. AT this point IF no other damage is done to the front end housing, timing belts etc. a new crank is an option. However a new crank is several thousand dollars plus all the work to disassemble the motor etc. That is why most opt for a low mileage used 55 engine. I used an S55 engine which required on the rework of the oil sump as the E55 is double sump and the S55 is not.
BUT before you get to even being in this situation if you are doing a pulley install my advice is get someone who has done it before and KNOWS what they are doing. My INDY shops had done 0 before mine and I paid the price. I was was fortunate in that their insurance cover the replacement so in the end i had a 70K mile engine replaced with a 7k mile engine. It did take nearly 2 months and LOTS of stress to get it all worked out though.
BUT before you get to even being in this situation if you are doing a pulley install my advice is get someone who has done it before and KNOWS what they are doing. My INDY shops had done 0 before mine and I paid the price. I was was fortunate in that their insurance cover the replacement so in the end i had a 70K mile engine replaced with a 7k mile engine. It did take nearly 2 months and LOTS of stress to get it all worked out though.
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From: Salt Lake City (but not Morm)
2003 E55 & 2014 GL550
Here is a search result of similiar situation.
https://mbworld.org/forums/w211-amg/...ed-keyway.html
https://mbworld.org/forums/w211-amg/...ed-keyway.html
Last edited by Jakpro1; Mar 1, 2011 at 12:37 PM.
MBWorld Fanatic!
Joined: Dec 2007
Posts: 1,461
Likes: 9
From: Treasure Island, FL
GLE 63S
IF you are saying the keyway was intact I'd still have the crank looked at very carefully.
