S55 Crank pulley
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2004 CLK 500
S55 Crank pulley
Hey guys I have been checking over a lot of things on my car which I like to do every so often and I noticed my crank pulley has a wobble in it.. the mechanic is trying to tell me it's normal they see it in all of them but I've seen videos of pulleys that are dead straight.. I'm thinking about replacing it to be safe.. it's $500 I'm told... also my tensioner by the blower is moving so I guess that's going to be replaced too.. has anyone else had this issue? Thanks
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'06 MB S55 AMG; '04 Audi Allroad 4.2; '05 BMW M3 Conv.; '92 MB 500E
Hey guys I have been checking over a lot of things on my car which I like to do every so often and I noticed my crank pulley has a wobble in it.. the mechanic is trying to tell me it's normal they see it in all of them but I've seen videos of pulleys that are dead straight.. I'm thinking about replacing it to be safe.. it's $500 I'm told... also my tensioner by the blower is moving so I guess that's going to be replaced too.. has anyone else had this issue? Thanks
GL.
maw
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2004 CLK 500
Thanks Maw! I am a little worried about all the keyway damage I hear about.. I want to make sure whoever I have do it or whether I do it it's done with the MB pulley tool and the right torque/bolt stretch.
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BMW E31 Dinan Stage 3 TT 625Hp on 93 pump............. 00 BMW E38 750iL.....03 S55 Alabaster white
Get it off there ASAP.......mine separated shortly after I bought the car (common issue apparently) and yes its $500 for the stock pulley. On the SC pulley you may just need a new Nachi bearing.....did that on mine also as a precautionary measure......
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BMW E31 Dinan Stage 3 TT 625Hp on 93 pump............. 00 BMW E38 750iL.....03 S55 Alabaster white
Yeah, installed it myself at the shop.......FYI you may want to get a front main seal as well.....might as well do it while youre there since you probably wont have another opportunity....
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2004 CLK 500
Well I just dropped the car off at the dealer.. I figured for the money I'll let them do it and if there is a problem afterwards it's covered.. two year warranty is peace of mind. Also having them do the crank seal, bolt and a new Kompressor tensioner as it was bouncing too.
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From: SF
E-Class
I can't tell for sure if it does. Might have to ask one of the vendors about that, but I do know that it allows me peace of mind when I step on the throttle that my belt wont slip with all my mods on it.
While you're in the area, might as well check all the pulleys.
While you're in the area, might as well check all the pulleys.
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BMW E31 Dinan Stage 3 TT 625Hp on 93 pump............. 00 BMW E38 750iL.....03 S55 Alabaster white
Ive also changed all my pulleys out for metal but not aftermarket aluminum like Sako......mine are all stock "look" and size....I just cross referenced multiple pulleys and found exact matches for the stock pulleys and idlers.....like Sako said...now zero worries about exploding plastic tensioner pulleys...cheap insurance
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2004 CLK 500
Well they didn't finish it today.. they didn't have the tool to lock the crank for the deep pulley so they had to borrow it from another dealer.. car should be done at noon tomorrow though... that's a good idea on the stock but metal pulleys.. so are you saying you found pulleys Mercedes made out of metal that were bolt ons?
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BMW E31 Dinan Stage 3 TT 625Hp on 93 pump............. 00 BMW E38 750iL.....03 S55 Alabaster white
Bolt on yes...Mercedes no......aftermarket but good quality like Dayco, etc (made in Canada) who makes the stock pulleys for multiple manufacturers from Ford/Chevy to Bmw. Major step up from even the Mercedes plastic pulleys....
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2004 CLK 500
Well the dealer called and said the car was done today.. I got there and the new pulley wobbled far worse than the old. I was pissed. Long story short I told them I think they broke the key taking the old pulley off so now they ordered another new pulley and bolt and now a new key. So looks like they are going to have to replace the key most likely.. this is exactly why I didn't want to do it.. I would bet money they messed it up pulling it because before only the outer part wobbled now it all does.. angering but at least it will be done correctly with a new key when done and now I'm stuck driving a 2017 c300 until Tues-Weds... 
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2004 CLK 500
Hey guys, is the harmonic balancer/crank pulley supposed to move at all or should it be completely straight as an arrow? The dealer is installing a second brand new pulley right now and I went and saw the crank shaft and it looks brand new as does the key. If anyone has an S55 handy that they can pop the hood and take a look at the balancer I'd appreciate it!
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BMW E31 Dinan Stage 3 TT 625Hp on 93 pump............. 00 BMW E38 750iL.....03 S55 Alabaster white
It doesnt "move" but it doesnt run completely "true" as an arrow..............a very slight "wobble" if you will but very slight.....
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2004 CLK 500
Ok thanks for the info! I told them to replace the top tensioner and they replaced the lower one so........ waiting tomorrow to pick it up in the morning after they receive and install the new tensioner.
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BMW E31 Dinan Stage 3 TT 625Hp on 93 pump............. 00 BMW E38 750iL.....03 S55 Alabaster white
should be a snug fit not tight.........once on and lined up with the keyway and pulled in there should be NO side to side movement......I lined it up and tapped it on a tad and let the crank bolt pull it in the rest of the way......I lubed the shaft with some assembly lube first and used loctite on the bolt....
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2004 CLK 500
Thanks! I'm surprised your key was able to come out like that! If you check the procedure the whole front of the motor has to come out to get the part the back half of the key goes into.. I guess you got lucky yours was able to come out on it's own! I talked to Renntech today and they said they have never seen a crank pulley that didn't wobble a little at idle and that 1/16 to 1/8 of an inch out of round is normal. They were super nice and told me to send them a video and they would tell me if it's ok!
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BMW E31 Dinan Stage 3 TT 625Hp on 93 pump............. 00 BMW E38 750iL.....03 S55 Alabaster white
Like I said I think the slight "wobble" as you call it is because the pulley is actually 2 pulleys held together with rubber for vibration......I think thats what you are seeing....they "look" like they have a wobble but I think its normal....
