[Hoooper]

So at 140k miles does that mean I'm in the clear? Really though I do check mine all the time since I figure I'm on borrowed time. I rarely run the ac though so maybe that makes a big difference. The list should have added columns for location and frequency of running ac

[BB_cuda]

Originally Posted by Hoooper

So at 140k miles does that mean I'm in the clear? Really though I do check mine all the time since I figure I'm on borrowed time. I rarely run the ac though so maybe that makes a big difference. The list should have added columns for location and frequency of running ac

Too late now. Live and learn. Location info is usually shown on people's profile but not always. One would think there would be rash of failures in the South and in AZ.

If people know how to copy list and edit in their own location and AC usage, it is doable. Please don't just respond with those two as this would be a big mess in the thread.

[GgOTi]

So, I've read through a few different threads about this particular issue. I think I may be suffering from this failure as well. What happened to me: Started the car up and started backing out of the driveway. Before getting out I lose power steering, smell burning rubber and the battery light illuminates on the dash. The system says battery isn't receiving a charge from the alternator. I pull back in and park it. After some searching and reading, I check under the hood. With the car running and AC off, everything seems okay with the ever-so-slight smell of rubber. No lights on the dash, power steering functioning. Car still running I turn on the AC, I watch as everything slows to a stop and the burning rubber smell returns. From what I could see, the center of what I'm pretty sure is the crankshaft pulley was still spinning while everything else had come to a halt.

Here's the questions I have now. Is this something I can replace with normal tools? Other than the pulley, drive belt and AC belt, is there anything else I should replace while doing this job?

I've found parts at https://www.eeuroparts.com/ Conti belts and Vaico pulley for a total of $218.72. Is it worth waiting for the Fluidampr group buy to actually materialize?

Also, I just clicked past 114k mi. Bought it a few weeks ago, and this drops into my lap. That's Murphy for ya, huh?

[QUIKDZL]

Originally Posted by GgOTi

Other than the pulley, drive belt and AC belt, is there anything else I should replace while doing this job?

I recommend replacing the four mounting bolts. See my post #214. I took the parts to my local indy shop and paid them for two hours' labor.

[Yozh]

Replace both of the belts at the same time. Also, if your thermostat is old or is failing, good time to replace while you are there and there are no belts or damper in the way of spilled coolant.

[BB_cuda]

Its that time of the year again apparently. Running A/C may or may not have to do with increased failures. I picked up another failure on a new thread and adding it in here. I gave the guy this thread to try to keep conversation in this one thread (there are 2 other sort of popular ones too).

Dixy2k 86,330 miles
DSB335D 81,000 miles
PR ~50,000 miles (PR verified now)
Chau 107,000 miles
montr 67,000 miles
Barmlot ~70,000 miles
Nushibo 80,000 miles
petey_highboost 122,000 miles
Flyingman 70,000 miles
OmahaDZL, 107,000 miles
Chief Orman 67,000 miles
Yozh 96,000 miles
CO335D 80,500 miles
Rulonger's friend (from parking lot) ~100,000 miles
davegris 104,000 miles (stranded on vacation)
DreiD 110,000 miles
Sti581, 94,207 miles
Sushiholic, 127,000 miles
copster, 79,200 miles
Hockey13, 98,800 miles (on verge of failure, 45° crack across web)
JCIL, 89,000 miles
Gearhead51, 85,xxx miles
Persian Whisperjet 71,200 miles (not failed but starting to go bad)
Idaho335, 90,000 miles
Chrisdridley 122,431 miles
Cruicad 94,003 miles
QUIKDZL, 115,500 miles
Cap'n Crunch 73,000 miles
IncogUH, 63,000 miles (Another fail in the low range)

[Torqu3]

I'll go ahead and throw mine in as well.

Torqu3 71,000 miles
Dixy2k 86,330 miles
DSB335D 81,000 miles
PR ~50,000 miles (PR verified now)
Chau 107,000 miles
montr 67,000 miles
Barmlot ~70,000 miles
Nushibo 80,000 miles
petey_highboost 122,000 miles
Flyingman 70,000 miles
OmahaDZL, 107,000 miles
Chief Orman 67,000 miles
Yozh 96,000 miles
CO335D 80,500 miles
Rulonger's friend (from parking lot) ~100,000 miles
davegris 104,000 miles (stranded on vacation)
DreiD 110,000 miles
Sti581, 94,207 miles
Sushiholic, 127,000 miles
copster, 79,200 miles
Hockey13, 98,800 miles (on verge of failure, 45° crack across web)
JCIL, 89,000 miles
Gearhead51, 85,xxx miles
Persian Whisperjet 71,200 miles (not failed but starting to go bad)
Idaho335, 90,000 miles
Chrisdridley 122,431 miles
Cruicad 94,003 miles
QUIKDZL, 115,500 miles
Cap'n Crunch 73,000 miles
IncogUH, 63,000 miles (Another fail in the low range)

[Idaho335D]

Originally Posted by GgOTi

Here's the questions I have now. Is this something I can replace with normal tools? Other than the pulley, drive belt and AC belt, is there anything else I should replace while doing this job?

You can replace this with normal tools. Took me about 3 hours to do it total, you can rent a torque wrench and the belt stretching tool from autozone if you dont have them. Other than that it's just normal hand tools.

[BB_cuda]

Reordering list as Torqu3 put himself at top of list. Moving him to the bottom like i do all other new additions. Wow. We have a total of 30 broken HBs.

Dixy2k 86,330 miles
DSB335D 81,000 miles
PR ~50,000 miles (PR verified now)
Chau 107,000 miles
montr 67,000 miles
Barmlot ~70,000 miles
Nushibo 80,000 miles
petey_highboost 122,000 miles
Flyingman 70,000 miles
OmahaDZL, 107,000 miles
Chief Orman 67,000 miles
Yozh 96,000 miles
CO335D 80,500 miles
Rulonger's friend (from parking lot) ~100,000 miles
davegris 104,000 miles (stranded on vacation)
DreiD 110,000 miles
Sti581, 94,207 miles
Sushiholic, 127,000 miles
copster, 79,200 miles
Hockey13, 98,800 miles (on verge of failure, 45° crack across web)
JCIL, 89,000 miles
Gearhead51, 85,xxx miles
Persian Whisperjet 71,200 miles (not failed but starting to go bad)
Idaho335, 90,000 miles
Chrisdridley 122,431 miles
Cruicad 94,003 miles
QUIKDZL, 115,500 miles
Cap'n Crunch 73,000 miles
IncogUH, 63,000 miles (Another fail in the low range)
Torqu3 71,000 miles

[WreckerX5d]

Replaced mine at 154,800miles for a 2011 (2010 build). Mostly highway, A.C. on pretty much the entire time and also spirited driving on backroads a decent bit (really engages the PS pump). The pulley didn't get destroyed, but it showed extensive wear and the rubber was cracked/warped.

[ASBSECU E93]

just replaced mine at 100k.

[hr369]

http://damperdoctor.com/


REBUILT HARMONIC BALANCERS
Rebuilt harmonic balancers have a refundable core value. All rebuilt harmonic balancers are first disassembled and cleaned. The parts are then inspected for defects, including stripped bolt holes and worn or cracked keyways and hubs. Harmonic balancers are then prepared for assembly. Timing marks are set to the factory specification by using a laser aligning process. After the timing marks are set, the harmonic balancers are then injected with a high-temperature, high-strength silicone rubber that is then platinum cured for a extremely strong hold. The new silicone rubber is capable of withstanding temperature in excess of 450 degrees, and will hold up against pressures as high as 770 psi. Rebuilt harmonic balancers carry a 3 year limited warranty

Damper Doctor is the source for new and rebuilt harmonic balancers. We stock thousands of dampers for domestic and import vehicles. Even if we don't have the right harmonic balancer in stock for your vehicle, we offer a custom rebuilding service of your worn out damper. Damper Doctor also offers rebuilding services for motor mounts and drive shaft supports.

[Hockey13]

Originally Posted by hr369

http://damperdoctor.com/


REBUILT HARMONIC BALANCERS
Rebuilt harmonic balancers have a refundable core value. All rebuilt harmonic balancers are first disassembled and cleaned. The parts are then inspected for defects, including stripped bolt holes and worn or cracked keyways and hubs. Harmonic balancers are then prepared for assembly. Timing marks are set to the factory specification by using a laser aligning process. After the timing marks are set, the harmonic balancers are then injected with a high-temperature, high-strength silicone rubber that is then platinum cured for a extremely strong hold. The new silicone rubber is capable of withstanding temperature in excess of 450 degrees, and will hold up against pressures as high as 770 psi. Rebuilt harmonic balancers carry a 3 year limited warranty

Damper Doctor is the source for new and rebuilt harmonic balancers. We stock thousands of dampers for domestic and import vehicles. Even if we don't have the right harmonic balancer in stock for your vehicle, we offer a custom rebuilding service of your worn out damper. Damper Doctor also offers rebuilding services for motor mounts and drive shaft supports.

but will you buy cores?

[OmahaDZL]

Originally Posted by BB_cuda

Its that time of the year again apparently. Running A/C may or may not have to do with increased failures. I picked up another failure on a new thread and adding it in here. I gave the guy this thread to try to keep conversation in this one thread (there are 2 other sort of popular ones too).

As I was scrolling through the post I got to thinking about this.... Id be willing to bet that we see a rash of these as it warms up not because of the AC pull but because the balancer is not cold/hard 90% of the time.....

Ive got a bad swaybar bushing that ONLY makes noise when its warm.....all winter long, not a peep, but as of last month it cries every tiny bump I touch... Theres without question a correlation for that rubber/urethane...I would be willing to bet there is one for the HB as well.

Could also be a combo of the two as well...

[BB_cuda]

Omaha, I would think cold would squeak more and hot would be mushy and quiet. Not arguing that you are hearing noise now but it is counterintuitive.

Dixy2k 86,330 miles
DSB335D 81,000 miles
PR ~50,000 miles (PR verified now)
Chau 107,000 miles
montr 67,000 miles
Barmlot ~70,000 miles
Nushibo 80,000 miles
petey_highboost 122,000 miles
Flyingman 70,000 miles
OmahaDZL, 107,000 miles
Chief Orman 67,000 miles
Yozh 96,000 miles
CO335D 80,500 miles
Rulonger's friend (from parking lot) ~100,000 miles
davegris 104,000 miles (stranded on vacation)
DreiD 110,000 miles
Sti581, 94,207 miles
Sushiholic, 127,000 miles
copster, 79,200 miles
Hockey13, 98,800 miles (on verge of failure, 45° crack across web)
JCIL, 89,000 miles
Gearhead51, 85,xxx miles
Persian Whisperjet 71,200 miles (not failed but starting to go bad)
Idaho335, 90,000 miles
Chrisdridley 122,431 miles
Cruicad 94,003 miles
QUIKDZL, 115,500 miles
Cap'n Crunch 73,000 miles
IncogUH, 63,000 miles (Another fail in the low range)
Torqu3 71,000 miles
Wrecker335d 154,800
ASBSECU E93 100,000

[335dlci]

Originally Posted by hr369

http://damperdoctor.com/


REBUILT HARMONIC BALANCERS
Rebuilt harmonic balancers have a refundable core value. All rebuilt harmonic balancers are first disassembled and cleaned. The parts are then inspected for defects, including stripped bolt holes and worn or cracked keyways and hubs. Harmonic balancers are then prepared for assembly. Timing marks are set to the factory specification by using a laser aligning process. After the timing marks are set, the harmonic balancers are then injected with a high-temperature, high-strength silicone rubber that is then platinum cured for a extremely strong hold. The new silicone rubber is capable of withstanding temperature in excess of 450 degrees, and will hold up against pressures as high as 770 psi. Rebuilt harmonic balancers carry a 3 year limited warranty

Damper Doctor is the source for new and rebuilt harmonic balancers. We stock thousands of dampers for domestic and import vehicles. Even if we don't have the right harmonic balancer in stock for your vehicle, we offer a custom rebuilding service of your worn out damper. Damper Doctor also offers rebuilding services for motor mounts and drive shaft supports.

maybe i dont see it but they dont even offer a D model.

[OmahaDZL]

Originally Posted by BB_cuda

Omaha, I would think cold would squeak more and hot would be mushy and quiet. Not arguing that you are hearing noise now but it is counterintuitive.

You might think it is, but when its cold the rubber is hard and isnt "grabby" its more like... a urethane bushing.....much less friction.... but just the opposite when its warm.

[kbsilver]

Originally Posted by BB_cuda

Its that time of the year again apparently. Running A/C may or may not have to do with increased failures.

As suggested before, it's not running the A/C that shortens the life span of the damper, but the fact if you run the A/C a lot, you probably live where it's hotter. And that the higher average temperatures that the car is exposed to is what shortens the lifespan.

I'm at 93K and recently asked the dealer to inspect the damper when it was in for service (bad temp sensor in DEF tank). They indicated it was fine (and I am hoping they did not say that just because it still was under extended warranty).

[rulonger]

Adding myself

Dixy2k 86,330 miles
DSB335D 81,000 miles
PR ~50,000 miles (PR verified now)
Chau 107,000 miles
montr 67,000 miles
Barmlot ~70,000 miles
Nushibo 80,000 miles
petey_highboost 122,000 miles
Flyingman 70,000 miles
OmahaDZL, 107,000 miles
Chief Orman 67,000 miles
Yozh 96,000 miles
CO335D 80,500 miles
Rulonger's friend (from parking lot) ~100,000 miles
davegris 104,000 miles (stranded on vacation)
DreiD 110,000 miles
Sti581, 94,207 miles
Sushiholic, 127,000 miles
copster, 79,200 miles
Hockey13, 98,800 miles (on verge of failure, 45° crack across web)
JCIL, 89,000 miles
Gearhead51, 85,xxx miles
Persian Whisperjet 71,200 miles (not failed but starting to go bad)
Idaho335, 90,000 miles
Chrisdridley 122,431 miles
Cruicad 94,003 miles
QUIKDZL, 115,500 miles
Cap'n Crunch 73,000 miles
IncogUH, 63,000 miles (Another fail in the low range)
Torqu3 71,000 miles
Wrecker335d 154,800
ASBSECU E93 100,000
Rulonger 99,600

[mefferso]

Guess the BMW gods decided it was my turn today. Luckily I was only a mile or so from home.


Dixy2k 86,330 miles
DSB335D 81,000 miles
PR ~50,000 miles (PR verified now)
Chau 107,000 miles
montr 67,000 miles
Barmlot ~70,000 miles
Nushibo 80,000 miles
petey_highboost 122,000 miles
Flyingman 70,000 miles
OmahaDZL, 107,000 miles
Chief Orman 67,000 miles
Yozh 96,000 miles
CO335D 80,500 miles
Rulonger's friend (from parking lot) ~100,000 miles
davegris 104,000 miles (stranded on vacation)
DreiD 110,000 miles
Sti581, 94,207 miles
Sushiholic, 127,000 miles
copster, 79,200 miles
Hockey13, 98,800 miles (on verge of failure, 45° crack across web)
JCIL, 89,000 miles
Gearhead51, 85,xxx miles
Persian Whisperjet 71,200 miles (not failed but starting to go bad)
Idaho335, 90,000 miles
Chrisdridley 122,431 miles
Cruicad 94,003 miles
QUIKDZL, 115,500 miles
Cap'n Crunch 73,000 miles
IncogUH, 63,000 miles (Another fail in the low range)
Torqu3 71,000 miles
Wrecker335d 154,800
ASBSECU E93 100,000
Rulonger 99,600
Mefferso 112,000

[Owen81]

How many of these failures on the X5 M57?
I was thinking maybe we are blaming the wrong part, with the issues the 335d had with the A/C belt squealing, maybe it is a function of a defective A/C compressor, or the compressor is over sized? Just a thought..

[Torqu3]

Originally Posted by Owen81

How many of these failures on the X5 M57?
I was thinking maybe we are blaming the wrong part, with the issues the 335d had with the A/C belt squealing, maybe it is a function of a defective A/C compressor, or the compressor is over sized? Just a thought..

Belt squeal is because the original belt is a tad too long and will slip. That's why they put out a Service Bulletin that calls for a belt that is 6mm shorter.