PITA Rear Rotor Bolts
Thread Starter
Super Member
Joined: Oct 2009
Posts: 923
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From: Jacksonville, Florida
2006 E55 AMG --old cars -- E39 M5, 2.7tt Audi S4, E36 M3 **Ducati 996, 748
PITA Rear Rotor Bolts
How do i get these *******s loose? I have the rear of the car on ramps... Tried an electric impact wrench 'returned it' -- too weak 230lbs... tried to breaker bar it but not enough space.
Will a 350lb impact wrench do the trick???? Or do i need to put the car on a rack and break the bolts loose with a longer bar? Would heating up the bolts help alot??
Will a 350lb impact wrench do the trick???? Or do i need to put the car on a rack and break the bolts loose with a longer bar? Would heating up the bolts help alot??
Member
Joined: Jan 2010
Posts: 141
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From: Denver, CO
2019 S63
If they are at 130 Lb/Ft or more even a breaker bar is going to be difficult since there is not much room to get it in there with leverage. I Just did my rear pads and rotors last weekend but I took into the dealer first and had them break the bolts loose and retighten to 100 Lb/Ft...much easier up on a lift. They did this for free since it was in getting camber bolts installed. I bet you could get it done for under $25 if that's all they are doing for you.
It's nearly impossible to get those loose without the car on a lift IMO
It's nearly impossible to get those loose without the car on a lift IMO
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Joined: Jul 2005
Posts: 3,174
Likes: 19
From: London, UK
No longer stock '06 E55, A3 3.2 Quattro, GLE 400d, R107 280SL, Golf Polo
Its almost impossible tbh... I nearly gave up 3 x over a full day trying to get them off. I ended up using a 3' breaker bar ... also I dont think I used a E18 socket. Think I ended up using a hexsocket and it managed to bind and bite with the bolts better. Once you hear the creak you know you had it cracked ... nicest sound I've heard wrenching for a long time.
The best way is to get an inline open socket, so you are applying the torque in line with the head of the bolt - like this....
http://www.img-automotive.co.uk/torq...r-14-18mm.html
most sockets leave you a little offset and when the pressure mounts the torque gets deflected.
Good luck ... !
The best way is to get an inline open socket, so you are applying the torque in line with the head of the bolt - like this....
http://www.img-automotive.co.uk/torq...r-14-18mm.html
most sockets leave you a little offset and when the pressure mounts the torque gets deflected.
Good luck ... !
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Super Member
Joined: Oct 2009
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From: Jacksonville, Florida
2006 E55 AMG --old cars -- E39 M5, 2.7tt Audi S4, E36 M3 **Ducati 996, 748
I just want to do an OEM rotor replacement. Not enough room to get the leverage but I did manage to rip a non-impact socket with my normal rachet.
I guess I can try it later when I am better prepared.... either I find more space 'lift'. Or I get a stronger impact wrench.... already have a new impact socket and breaker bar.
While I am in the area, I want to cut out the dust shields.
Will applying some heat 'torch' help break the bolts?
I guess I can try it later when I am better prepared.... either I find more space 'lift'. Or I get a stronger impact wrench.... already have a new impact socket and breaker bar.
While I am in the area, I want to cut out the dust shields.
Will applying some heat 'torch' help break the bolts?
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Member
Joined: Dec 2010
Posts: 126
Likes: 0
2006 E55 AMG
I just want to do an OEM rotor replacement. Not enough room to get the leverage but I did manage to rip a non-impact socket with my normal rachet.
I guess I can try it later when I am better prepared.... either I find more space 'lift'. Or I get a stronger impact wrench.... already have a new impact socket and breaker bar.
While I am in the area, I want to cut out the dust shields.
Will applying some heat 'torch' help break the bolts?
I guess I can try it later when I am better prepared.... either I find more space 'lift'. Or I get a stronger impact wrench.... already have a new impact socket and breaker bar.
While I am in the area, I want to cut out the dust shields.
Will applying some heat 'torch' help break the bolts?
I have yet to have a bolt or nut that can beat it.
http://www.factoryauthorizedoutlet.c...FclM4Aod3ikAVw
Member
Joined: Jan 2011
Posts: 225
Likes: 67
From: West Linn, Oregon
2011 E550 - 4Matic, 2008 ML550
Great reason to get new toys...I was trying to do my front brakes and using a 300lb wrench had no luck...
4 days later - this showed up at my door?
and Zzzwwwiiingggggggg...off comes the bolts...And only a meer 51 smackos!
This weekend I plan to do the rears...I'll let you know if the 500lbs this one has is enough...
Cheers
JP
4 days later - this showed up at my door?
and Zzzwwwiiingggggggg...off comes the bolts...And only a meer 51 smackos!
This weekend I plan to do the rears...I'll let you know if the 500lbs this one has is enough...
Cheers
JP
Member
Joined: Apr 2008
Posts: 207
Likes: 0
2003 E55 estate
Good tool !!!
Got mine off in the end , long braker bar and a strong boot
The fronts are just as bad , broke 2 sockets so far , quite hard to get on to the bolts square . A little tip I wish I had found earlier for fronts , remove the caliper from the bracket first , then you can get to the bracket bolts a lot easier .
Should soon have my 12 piston calipers and floating discks on the front
Got mine off in the end , long braker bar and a strong boot
The fronts are just as bad , broke 2 sockets so far , quite hard to get on to the bolts square . A little tip I wish I had found earlier for fronts , remove the caliper from the bracket first , then you can get to the bracket bolts a lot easier .
Should soon have my 12 piston calipers and floating discks on the front
Member
Joined: Jan 2011
Posts: 225
Likes: 67
From: West Linn, Oregon
2011 E550 - 4Matic, 2008 ML550
I turned my wheel and was able to get this Wrench on the bolt with a standard impact socket...
But I did buy 4 NEW Caliper bolts (that also came with blue loctite on them) for the re-install - safe and cheap and not that the ones I pulled off were stripped but if I needed to pull them off again - they were nice and not rounded in anyway.
Thought it was odd though the fronts were HEX and the rears are TORX?
Cheers
JP
But I did buy 4 NEW Caliper bolts (that also came with blue loctite on them) for the re-install - safe and cheap and not that the ones I pulled off were stripped but if I needed to pull them off again - they were nice and not rounded in anyway.
Thought it was odd though the fronts were HEX and the rears are TORX?
Cheers
JP
MBWorld Fanatic!
Joined: Oct 2007
Posts: 1,717
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From: San Jose, CA
2007 E63 w/P30 and Eurotech CF Diffuser
Defeated today as well. Pains me to put the old pads back in and have to go with my $$ to a shop just to break these loose.
The front hex on my 2007 was easy. Guess the better angle had by turning the wheel helps, but no way those were as tight.
The front hex on my 2007 was easy. Guess the better angle had by turning the wheel helps, but no way those were as tight.
Member
Joined: Oct 2012
Posts: 230
Likes: 1
From: Santa Monica
2005 e55
How do i get these *******s loose? I have the rear of the car on ramps... Tried an electric impact wrench 'returned it' -- too weak 230lbs... tried to breaker bar it but not enough space.
Will a 350lb impact wrench do the trick???? Or do i need to put the car on a rack and break the bolts loose with a longer bar? Would heating up the bolts help alot??
Will a 350lb impact wrench do the trick???? Or do i need to put the car on a rack and break the bolts loose with a longer bar? Would heating up the bolts help alot??
I always thought the rotor was held on by the little m6 torx or allen head set screws.
when you say car is on ramps how are you loosening rotor bolts off , if you still have the wheels on? or do you mean jackstands and wheels are off..
or are you reffering to the caliper bolts ?
MBWorld Fanatic!
Joined: Oct 2007
Posts: 1,717
Likes: 17
From: San Jose, CA
2007 E63 w/P30 and Eurotech CF Diffuser
Ok, everything is back together. New Evosport rotors, OEM pads, and Titanium shims. I will post a new thread after I download some photos. Time to clean up and bed the new pads.
