Crank Pulley wobble after removing/reinstalling idler pulley
02-08-2019, 08:33 PM
#1
Member
Thread Starter
Crank Pulley wobble after removing/reinstalling idler pulley
Hey everyone,
I just finished replacing my alternator this evening and was happy to be successful. In order to get it out and in I removed the supercharger idler pulley for access.
However - I now see substantial wobble in my crank pulley at idle that was not present before. I was panicking that it was giving up on me but am now hopeful I just installed the pulleys incorrectly or didn’t torque correctly.
Any ideas?
Edit: Car is bone stock with 75k miles.
I just finished replacing my alternator this evening and was happy to be successful. In order to get it out and in I removed the supercharger idler pulley for access.
However - I now see substantial wobble in my crank pulley at idle that was not present before. I was panicking that it was giving up on me but am now hopeful I just installed the pulleys incorrectly or didn’t torque correctly.
Any ideas?
Edit: Car is bone stock with 75k miles.
Last edited by Jake528; 02-08-2019 at 08:59 PM.
02-08-2019, 11:23 PM
#5
02-08-2019, 11:28 PM
#6
Member
Thread Starter
Oh, it’s a substantial amount of wobble. You can see it from any angle. It goes away at about 1k rpm though.
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02-09-2019, 09:30 AM
#8
02-09-2019, 12:19 PM
#9
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Thread Starter
02-09-2019, 12:32 PM
#10
Take it to a reputable MB dealer and let them service it. Trust me not something you want to skimp on. It requires a tool to hold the pulley for removal and install and an insane amount of torque on the bolt for a successful install.
02-09-2019, 12:46 PM
#11
Member
Thread Starter
Pretty sure my Dad and I could handle it but I am currently waiting on a quote to hear how much they want to rail me for it.
02-11-2019, 11:31 AM
#15
Member
Thread Starter
Dealer wants $250 in labor, plus $580 for the pulley. For that kind of labor I think it’s probably worth it to let them handle it. Waiting to hear back from an independent shop as well but doubt they would be any less at that rate.
02-11-2019, 06:02 PM
#16
Not trolling ,just funny to read people posts that make no sense and rather tackle things that needs special attention to do it correctly. You been only on this board for few months watch in 1 year you'll be posting lol to on many things said.Change you sig with your mustang unless you don't own a amg.
02-11-2019, 06:21 PM
#17
Member
Thread Starter
Not trolling ,just funny to read people posts that make no sense and rather tackle things that needs special attention to do it correctly. You been only on this board for few months watch in 1 year you'll be posting lol to on many things said.Change you sig with your mustang unless you don't own a amg.
02-11-2019, 06:32 PM
#18
Replacing a crank pulley on a E55 shouldn't be something intimidating to anyone with some mechanical skill.... just because it's a Mercedes doesn't mean it requires a high level of knowledge. I made a tool to hold the pulley and replaced it without any issues. It really does make this forum look bad when people come here looking for help just to be ridiculed...
if you do decide to do it yourself send me a PM I can help and send you the tool I made or show you how to make it it's easy. I used a piece of pipe that was small enough to match the holes on the pulley. Weld three bolts that fit in the holes then a long three foot piece of pipe as the handle.
You can find the tq procedure on the forums. I believe it's 150ft/lbs+ 90 degrees. Use a OEM bolt not one from arp.... It's going to take a five ft breaker bar and two people to get it done. I removed my entire front end. Check our my threads I posted a thread on with pictures when I did it. Best of luck.
if you do decide to do it yourself send me a PM I can help and send you the tool I made or show you how to make it it's easy. I used a piece of pipe that was small enough to match the holes on the pulley. Weld three bolts that fit in the holes then a long three foot piece of pipe as the handle.
You can find the tq procedure on the forums. I believe it's 150ft/lbs+ 90 degrees. Use a OEM bolt not one from arp.... It's going to take a five ft breaker bar and two people to get it done. I removed my entire front end. Check our my threads I posted a thread on with pictures when I did it. Best of luck.
02-11-2019, 06:55 PM
#19
Member
Thread Starter
Replacing a crank pulley on a E55 shouldn't be something intimidating to anyone with some mechanical skill.... just because it's a Mercedes doesn't mean it requires a high level of knowledge. I made a tool to hold the pulley and replaced it without any issues. It really does make this forum look bad when people come here looking for help just to be ridiculed...
if you do decide to do it yourself send me a PM I can help and send you the tool I made or show you how to make it it's easy. I used a piece of pipe that was small enough to match the holes on the pulley. Weld three bolts that fit in the holes then a long three foot piece of pipe as the handle.
You can find the tq procedure on the forums. I believe it's 150ft/lbs+ 90 degrees. Use a OEM bolt not one from arp.... It's going to take a five ft breaker bar and two people to get it done. I removed my entire front end. Check our my threads I posted a thread on with pictures when I did it. Best of luck.
if you do decide to do it yourself send me a PM I can help and send you the tool I made or show you how to make it it's easy. I used a piece of pipe that was small enough to match the holes on the pulley. Weld three bolts that fit in the holes then a long three foot piece of pipe as the handle.
You can find the tq procedure on the forums. I believe it's 150ft/lbs+ 90 degrees. Use a OEM bolt not one from arp.... It's going to take a five ft breaker bar and two people to get it done. I removed my entire front end. Check our my threads I posted a thread on with pictures when I did it. Best of luck.
Edit: Just to clarify I didn’t ever actually ask for DIY help I was looking for some thoughts on the pulley itself and if it was, indeed, going bad. Thanks for the help guys.
Last edited by Jake528; 02-11-2019 at 07:02 PM.
02-11-2019, 07:02 PM
#20
I would do the same... I did it myself because I got the car from a friend who had a aftermarket pulley installed and they failed to do it correctly twice almost ruining the crank snout... I was fortunate to save the motor. Congrats on the new addition!!!
