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"KRS/GT" Technical Q&A K1200RS/GT Technical Questions/Answers

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  #1  
Old 08-27-2011, 01:36 PM
BAK04GT BAK04GT is offline
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Obtainable iABS motors for 1st gen GT and RS

Got word finally that the motors for the iABS brake system can be purchased. After disassembly of my iABS unit due to issues of sudden brake warning lights flashing and power assist failure (BAD!) I found my assist motors worn at the commutators and brushes to the point of intermittent motor failure and no brake assist. I have been hunting for a connection to buy these motors that are not obtainable through BMW and you must buy the whole iABS unit at over $2,500.00 If your unit is just in need of motors here is where they can be purchased. Here is the email I received inquiring purchase.
From: Dan McFarland
Date: 8/15/2011 6:57:21 PM
To: bak04gt@metrocast.net
Subject: RE: M42-40 (211220) DC motor






body, html { overflow: hidden; } Hello Mr. Kenney,

Part # 211220 M42x20 12 volt DC motor: (KAG Manufacturing)
  • Qty 2 is $207.56/unit. (each) Lead time is 6 weeks ARO.


    Sincerely,

    Dan McFarland, VP Sales
    408-529-5450 (Direct#)

    408-993-0123 (Fax)
    www.mcfarlandassociates.net.com
Could this please be made a sticky....Thank you
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  #2  
Old 08-27-2011, 01:48 PM
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Re: Obtainable iABS motors for 1st gen GT and RS

You need to clean up the email....then I'll make it a sticky

May want to also explain where and why for noobs.
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Old 08-27-2011, 01:54 PM
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Re: Obtainable iABS motors for 1st gen GT and RS

Question is, is this the most common failure, do the motors die or do things seize from lack of fluid change?

Don't know where you got that P/N, but here's the KAG PDF:

http://www.kag-hannover.de/fileadmin.../KAG_DB_DC.pdf

Have to believe it would be better to get one our esteemed German members to see if they can buy and ship rather than screwing around with a U.S. Rep, that is probably doubling the price.

Yes please, clean the e-mail up so we can read it.....
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Old 08-27-2011, 02:13 PM
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Re: Obtainable iABS motors for 1st gen GT and RS

I have written to KAG multiple times with no response.The part number is on a tag that is located on the motors themselves...When I disassembled my unit the wet side was immaculate with no signs of corrosion,rust or sediment (120,000 miles) .I would flush my system once a year buy flushing through the wheel cylinders and activating the ABS side a couple times to flush it out and re drain through the wheel cylinders. If they can be obtained direct would be great....
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Old 08-27-2011, 04:37 PM
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Re: Obtainable iABS motors for 1st gen GT and RS

Quote:
Originally Posted by BAK04GT
I have written to KAG multiple times with no response.
Phone them!!!!!!!!!!

The phone number in Hannover is on the last page of the PDF brochure. ANY company of any decent size in Germany is used to fielding telephone calls in English. Just start the conversation by stating your LAST name (German phone etiquette), then saying "Hallo, do you speak English". The answer will usually be yes.
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Old 08-27-2011, 04:54 PM
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Re: Obtainable iABS motors for 1st gen GT and RS

Quote:
Originally Posted by BAK04GT
I have written to KAG multiple times with no response.The part number is on a tag that is located on the motors themselves...When I disassembled my unit the wet side was immaculate with no signs of corrosion,rust or sediment (120,000 miles) .I would flush my system once a year buy flushing through the wheel cylinders and activating the ABS side a couple times to flush it out and re drain through the wheel cylinders. If they can be obtained direct would be great....

So do you think one both motors failed? Have you tried them direct to a 12DC source to verify this?
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Old 08-27-2011, 05:07 PM
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Re: Obtainable iABS motors for 1st gen GT and RS

Quote:
Originally Posted by K-K
So do you think one both motors failed? Have you tried them direct to a 12DC source to verify this?
I did direct connect...but really no need to. The damage was very apparent to the commutator ...There was soooo much fine sand and dirt in the motors that it ate up the brushes and commutators...junk!
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Old 08-27-2011, 05:11 PM
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Re: Obtainable iABS motors for 1st gen GT and RS

Quote:
Originally Posted by BAK04GT
I did direct connect...but really no need to. The damage was very apparent to the commutator ...There was soooo much fine sand and dirt in the motors that it ate up the brushes and commutators...junk!

Wow, amazing! Would have thought they were sealed.....
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Old 08-28-2011, 07:24 AM
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Re: Obtainable iABS motors for 1st gen GT and RS

Quote:
Originally Posted by K-K
Wow, amazing! Would have thought they were sealed.....
There is a small opening at the base of the motor for venting or to allow brush dust to escape but what it looks like is that maybe, just pure coincidence that fine road sand gets either blown up or sucked up into the top where the commutator and brushes are due to the position of that small opening Life expediency should be around 3000 hr of operation in perfect conditions.I dont know if rated at continual operation or ran with loads from start ups. Go here for spec sheet http://docs.google.com/gview?embedde...12V-211220.pdf
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Old 12-21-2011, 07:23 AM
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Re: Obtainable iABS motors for 1st gen GT and RS

I have read about this problem before. A motor with worn brushes and commutator is definitely a dead motor. If I had to replace somthing like that I would see how I could still provide ventilation and cooling whilst keeping out the road dirt.

When you go back to an oem sub contractor with part numbers, they will know they were items made to contract for BMW and you have to negotiate these hurdles. There are some things you may learn and others they won't talk about. The best result is if you can find something that is similar, perhaps sold as a generic for other vehicles. I suspect BMW will always impose some technical requirement to create a unique version. But the motor commutator and brush assembly may still be used in other products.

I don't have this and have never seen one, but if you were lucky you might find something in a totally different housing that uses the same generic motor parts.
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Old 12-21-2011, 01:57 PM
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Re: Obtainable iABS motors for 1st gen GT and RS

thanks for the thread!
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Old 12-21-2011, 04:41 PM
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Re: Obtainable iABS motors for 1st gen GT and RS

The motors are available for $207.00 each and I did get conformation for purchase as a low life bike owner from the manufacture (KAG) using the same part numbers that are on the motors. I believe I posted that info some where on here. I will have to dig it up.
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Old 12-21-2011, 07:53 PM
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Re: Obtainable iABS motors for 1st gen GT and RS

DOH! found it, its the thread starter. I have convinced myself to go with a completely new unit rather than just changing out the motors. R&R...I don't trust the set up enough to try and do a repair job. Even with the new unit my close calls will always be etched in my mind because of not trusting BMW ABS integral brake systems. Am looking at trading it in when complete. My15 year old winter go to the dump beater with a gazillion miles on it still works today. never had a brake fluid flush or had a re program in its life. Shit, think the last time i even washed it was back in 2005.
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Old 12-21-2011, 08:53 PM
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Re: Obtainable iABS motors for 1st gen GT and RS

Quote:
Originally Posted by K-K
Wow, amazing! Would have thought they were sealed.....



actually ' gas ' is generated & has to be vented
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Old 12-22-2011, 06:19 AM
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Re: Obtainable iABS motors for 1st gen GT and RS

I think he means ozone from the commutator.

But how does the fuel pump motor vent then when it is immersed in fuel?

If you want to vent motors you just include a small fibre filter pad somewhere on the sealed casing - gas out air in, no grit in.

If I was paying lots of money for a replacement, that's what I would look into. I haven't seen one, but sealing it up and adding a thin pvc vent tube with a filter plug in the end run somewhere high would do the trick.
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