K11 Owners Group

Off the grid · Posted: Sun Apr 06, 2008 12:13 am Post subject:

Bumping this fossil, just ordered a set of steel bobbins. Rotors have too much play, make strange noises under braking, and is actually missing a bobbin on the left side!

96$ delivered, and got 5 washers/lock clips to replace any needed/missing.

I should rotate the rotor one forward, right?

I can do it with the wheel on the bike?

-D
_________________
Bane of your existence since July 2006
2007 Triumph Tiger ABS. "Sabertooth"
2009 Husqvarna TE610. "The dirty Italian mistress"

Jim · Posted: Sun Apr 06, 2008 12:18 am Post subject: brake bobbins

It isn't THAT old!

Others have done it with the wheel on the bike - I'm sure you can, too. You have plenty of room in your shop...' Laughing

'

IIRC, the trick is to move the bobbins with the spring - one hole - either direction. I don't think I'm going out to my "bike service and storage area" to take a look...
_________________
Jim
1997 K1100LTSE 94,000 - still has gremlins!
1995 R100RT Classic 16,650 crashed - repaired!
1992 K75RTP 46,000

"We shall not all die, but we shall all be changed."

bmwmick · Posted: Sun Apr 06, 2008 11:29 am Post subject:

Off the grid · Posted: Mon May 12, 2008 9:18 pm Post subject:

I just finished this job and would like to make a few observations.

1. This job is 100% easier with the rotors OFF the bike. I mangled 3-4 washers and clips with the rotors on and NONE with them off. You simply cannot get a good angle on the clips with the rotors on the wheel. Also it is worlds easier to fit in those annoying spring bobbins with the rotor off and laying it on a flat surface.

2. It gives you a great opportunity to scrub (or in my case, re-paint) the front wheel and rotor braces.

3. You DO NOT need a set of washers and clips, but it is a good idea to get 6 extra of each for backup.

4. My front braking is MUCH more confident than before, and no more clunking!
_________________
Bane of your existence since July 2006
2007 Triumph Tiger ABS. "Sabertooth"
2009 Husqvarna TE610. "The dirty Italian mistress"

CheapJapCopy · Posted: Tue May 13, 2008 8:03 am Post subject:

I just did this job with everything in situ. It seems impossible to get to the circlips from behind the spokes, but when you get the hang of it, they pop off really easily. What you have to do, is aim for the CLOSED END of the circlip, you'll notice two cutouts that are terminal screwdriver sized becoming visible. Once you have the 'driver lodged in one of these, PING off it comes. By the last one, you're an expert. It took me two hours for the whole job.
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1992 K1100RS - Red and gold.

Euripides

Freinds: What is a "bobbin" on a BMW motorcycle?? The last thing I knew that had a "bobbin" was my mom's 1934 Singer sewing machine. The "bobbin" was the spool that fed the thread to the needle. I looked in my Haynes (British Publisher) K100 & K75 manual in the index and defination of technial terms and no such word appears! I then checked my Clymers manual and no such word appears. I think you mean "wheel bearings" but am not sure??

By the way, am I the only person that knows the difference between a female jogger and a sewing machine? - Euripides

bmwmick · Posted: Tue May 13, 2008 10:21 am Post subject:

Item #2 here:
http://www.realoem.com/bmw/showparts.do?model=0418&mospid=48862&btnr=34_0660&hg=34&fg=05
ETK calls it a 'roll pin' but that is also incorrect. Smile

Mick
_________________
Mick McKinnon
KOG#175
'93 K1100LT, '96 R1100RT, '84 R100RS, 2010 Kawasaki C-14
Tucson, AZ

John Clauss · Posted: Wed May 14, 2008 8:56 am Post subject:

I got myself a long (12") standard Craftsman screwdriver. I then ground its width some to allow it to fit in the open sections of the spring clip. I was able to work this in from the far side of the wheel. Good light is key as well, I did mine outside on a bright sunny day.

I sat on the ground in front of the bike with my legs on either side of the wheel and worked at them. once I got the rhythm down it was easy. The key is patience and taking your time. You try to rush this job and all you get is frustration.
_________________
1997 K1100LT
1975 R75/6

It will bring you so close to nausea, it will make you sick! - Big Al

Off the grid · Posted: Wed May 14, 2008 10:56 am Post subject:

I agree John, but part of my problem is that I did not have the right tool for the job, mainly a long, thin screwdriver with a narrow head.

I just moved and am moving again this weekend so my tools are all akimbo. I consider myself lucky to even have gotten the job done at all.
_________________
Bane of your existence since July 2006
2007 Triumph Tiger ABS. "Sabertooth"
2009 Husqvarna TE610. "The dirty Italian mistress"