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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E60 / E61 (2004 - 2010)

E60 / E61 (2004 - 2010)
BMW 5-Series E60 Sedan was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E61 wagon followed shortly there after. The E60/E61 5 series is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #1  
Old 10-07-2014, 07:22 PM
aber57 aber57 is offline
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Thigh support motor gears, group buy

If you have a 2004 through 2010 E60 and most likely any other BMW in those years and maybe even later, then your motorized thigh support cushion motors (if equipped) will eventually shear teeth on their plastic gears. You can get another motor with another plastic gear for $215 each or we have an opportunity to get aluminum gears made up by a member here, JayDee4711, for $30 each. The catch is that we need a 100 gear run for the setup and design, etc., to work out for it to be feasible to produce these.

Please reply with your desire to have a pair of these. (Please!)

The gear is replaced by removing the motor assy from seat and then taking the track gear off one end of the shaft. Then remove the gear case screws and slide the cover and the broken gear down the hex shaft. Slide the new gear down the shaft and then cover. Reinstall the screws and the track gear. Reisntall the assy onto seat and live happily comfortable ever after.

The part number for the motor is 52107068045 and is shown as fitment for comfort seat both sides and sport seats driver's side. I found a sport seat RH side fix the gear with glue article and it looks like the same gear but the motor is flipped to the other side for some reason but uses the same internal gear.

I found this motor by part number with fitment listed as 2002 through 2013 5's, 7's, X5's.
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  #2  
Old 10-11-2014, 07:59 AM
Surfer4141 Surfer4141 is offline
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I can not believe that nobody is interested. I will have go for pair.
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  #3  
Old 10-11-2014, 12:36 PM
aber57 aber57 is offline
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Apparently these are breaking in significant numbers yet.
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  #4  
Old 10-11-2014, 09:30 PM
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gcvt gcvt is offline
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I might be in if mine was busted. Fortunately, only the GF's side is broken, but it's broken in the proper position so she's good. Actually, I never move mine so it would also 'break' in the proper position. I guess I wouldn't need any parts until I'm ready to sell this thing
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Last edited by gcvt; 10-11-2014 at 09:31 PM.
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  #5  
Old 10-12-2014, 01:41 PM
KCCO_Dallas KCCO_Dallas is offline
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I'm in for a pair!


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  #6  
Old 10-12-2014, 05:27 PM
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Mike78 Mike78 is online now
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I don't use mine that often, but if it will help the cause to get some made, I'll buy a pair.

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  #7  
Old 10-12-2014, 09:18 PM
etnav382 etnav382 is offline
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Sounds like a great idea, did you post this in all the other relevant forums to get the word out?
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  #8  
Old 10-13-2014, 10:19 AM
7BMW7 7BMW7 is offline
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Sure.
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  #9  
Old 10-29-2014, 04:52 PM
asecret asecret is offline
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Mein Auto: E60 550i
Yes I'll buy 2 pairs.

would jump at the chance to replace mine and keep spares for down the track...
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  #10  
Old 11-01-2014, 12:34 AM
ththomasjr ththomasjr is offline
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Mein Auto: 535I. CLK 320
Gears

I need a couple!
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  #11  
Old 11-17-2014, 06:46 AM
sandoff sandoff is offline
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I'm in for a Pair as well!
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  #12  
Old 11-17-2014, 09:51 AM
08550 08550 is offline
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Mein Auto: e60 550i
Wht a thight support gear ... Pictures ? Two of my seat . One is not working and the othet work but in poor coditions ... Send or post a picture o make sure i talk with the same parts
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  #13  
Old 11-17-2014, 09:57 AM
08550 08550 is offline
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Mein Auto: e60 550i
If we talk abojt the same parts then yea im down
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  #14  
Old 11-17-2014, 01:38 PM
aber57 aber57 is offline
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I think this issue is dead. Apparently the need for these is not so great that the order bank will build quickly enough to make this happen.
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  #15  
Old 11-17-2014, 01:51 PM
Surfer4141 Surfer4141 is offline
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Too bad. I guess 180$ for assembly next time.
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  #16  
Old 11-17-2014, 02:39 PM
08550 08550 is offline
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**** really ?
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  #17  
Old 11-18-2014, 04:08 PM
aber57 aber57 is offline
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There was another thread on this and the guy who works for a machine shop/fab shop could likely set up and build for a run of 100. We're still less than 20 and we're 8 weeks in.
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  #18  
Old 11-18-2014, 06:16 PM
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JayDee4711 JayDee4711 is offline
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That guy was me. To clarify what seems to have been garbled in translation: The company I work for has a well-equipped machine shop that does a lot of custom parts. However, I do not work in the shop and, therefore, cannot simply set up a small run of those gears on my own time -- which I would otherwise be happy to do. That means, I would have to create it as a regular part, and we would have to generate at least a small profit with it. Estimating a number crunch based on experience and discussing the project with the shop manager, there is no way we could get the price anywhere near 30 bucks unless we have about 100 more or less fixed orders. And if we run parts for the twenty that have expressed interest here, the price we would have to charge would likely be in the ballpark of the entire assembly. Not something I feel comfortable with. A thorough calculation might come up even less favorable.

So let's cancel this. In the event that I get a chance to learn how to set up a run on our CNC mills, I'll revive his thread. For the time being, all I can say is sorry.
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  #19  
Old 11-18-2014, 09:59 PM
aber57 aber57 is offline
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Thanks for the offer Jay.
Maybe this will work in the future.
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  #20  
Old 11-25-2014, 06:13 AM
BMOC1975 BMOC1975 is offline
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aber57

I'll sign up for a pair.
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  #21  
Old 12-01-2014, 06:01 AM
Brad Hotaling Brad Hotaling is offline
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I Would like a pair of these
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  #22  
Old 07-01-2015, 09:00 AM
nv550 nv550 is offline
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Available on eBay now

JayDee - I'm not surprised you "couldn't find a market."
I think that even though the gear has a high failure rate, with quite a few probably willing to do a DIY project and replace the assembly, replacing the gear itself requires another "level" of disassembly. I would guess that not too many even know they could do it, because, at the end of the day, it's not really that hard.

I can also confirm the high cost of making a (limited) run. The alternative is 3D-printing it, but I would suspect the end result will not be as resilient.

I found an eBay seller (called "cat_parts_zoo") from Taiwan, selling just the (plastic!) gear for $80. I put an "offer" and was able to have him agree to sell it for $55 (the item ID I bought: 321786499510). This is of course a much worse deal than the one you tried to structure, because it just a single gear, and it's plastic, not aluminum.
However, that seller was willing to take a risk: he probably made a run and strives to push them through eBay.

I know that some time has passed since you originally offered to do this, and that this is considered "closed" from your perspective. But, if you'll PM me with some numbers, I'll consider bankrolling this.
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  #23  
Old 07-01-2015, 10:23 AM
Kurt_ Kurt_ is offline
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I fixed mine by epoxying it back together and fine-tuning the teeth a little. I found that you could NOT just slip on the gear to the shaft, there was a flange on both sides preventing you from doing this. It appears as though the gear has to be manufactured around the shaft.

Maybe I'm wrong though. Either way, I'm down for two if this ever pans out.
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  #24  
Old 07-01-2015, 11:23 AM
nv550 nv550 is offline
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Glued it too - failed again

I actually posted many pictures of the gluing process here:
http://5series.net/forums/e60-discus...-126174/page2/

But it failed again - the gear broke at another point.

And I think you're right - I'm too, worried that the gear can't be "slipped on." But I think I can "carve" out the inner part of the gear until it slips on and then slip it on with some epoxy.
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  #25  
Old 07-01-2015, 02:12 PM
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JayDee4711 JayDee4711 is offline
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The gear guy in our R&D shop is currently looking at it. He thinks turning down the shaft and/or using a metal gear and a set screw or two is the way to go. Traveling right now, so I will not have an update until after the holiday, at best.

It is easy to see why gluing the gear does not hold up. Too skinny from the get-go, IMHO.
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