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darkwing
Joined: 27 Oct 2008
Posts: 10
Location: HANAHAN, SOUTH CAROLINA
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 Posted: Tue Jan 27, 2009 9:12 pm Post subject: front brake rotors bushing replacement |
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 I found an easy way to replace the bushings. I started off with the remove one and replace it method and it was quite tedious. I then went around and removed all but the spring bushings. This gave me enough wiggle room to work the new ones in 1/2 at a time. I removed the spring rivet and as suggested moved them forward 1 hole. I set the rivet in and worked the spring in to the fixed part till it bottomed out, then worked the 2nd 1/2 into the rotor with minimal effort. Once I had replaced all 3 sprung bushings the remaining un-sprung went in with no effert at all. took about 10 minutes to replace the first one and once I figured out this trick it took about 30 minutes to finish up the one and do the other one completely. In other words 10 minutes to figure out 1 and 30 minutes to do the remaining 23. Not as bad as I thought when I started. I did notice that one side was really worn and the other were not bad at all, I assume that the last owner only did one side. I just bit the bullet and did both sides as a matched set. NO MORE NOISE FROM THE FRONT!!!!
Let me know if this helps.
_________________
Thanx
Reece
94 k1100LT 101K and still rollin strong
bought in march of '08 with 87K as of Jan '09-96K.
07 Texas chopper 8k
07 TRIUMPH SPRINT ST 14K
04 HD Dyna Wifes PINK RIDE ??
ANY DAY IS A GOOD DAY TO RIDE... |
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Mystic Red
Flying Brick Rider
Joined: 28 Mar 2005
Posts: 2330
Location: Twin Lakes Idaho
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| Posted: Tue Jan 27, 2009 10:39 pm Post subject: |
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Thanks for the tip, Reece, I just ordered the replacement parts and will be doing it before spring, although I have a set of Duck's replacement rotors to install also. Where did you buy your bushings? I looked at A&S for $4.58 per non sprung but Max had them for $3.05  . I'm sure Chicago BMW was cheaper but I wanted them during my lifetime. 
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Scott Hespelt, '94 K11LT
K11 OG #466 |
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darkwing
Joined: 27 Oct 2008
Posts: 10
Location: HANAHAN, SOUTH CAROLINA
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| Posted: Mon Feb 02, 2009 7:09 pm Post subject: Rotor bushings. |
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I got them from the dealer. $99.00 for both sides. Aluminum as required. I only got the bushings and re-used the washers and spring clips(E-clips). I looked for replacement clips but the design is such that I was not comfertable with aftermarket. If the clip[ is a little loose just give it a slight squeeze to close it up some. The part numbers for the plain bushings (roll pins) is#34 11 2 310 086 need 18 ...and sprung (pully) is #34 11 2 310 995 need 6.
hope this helps.
_________________
Thanx
Reece
94 k1100LT 101K and still rollin strong
bought in march of '08 with 87K as of Jan '09-96K.
07 Texas chopper 8k
07 TRIUMPH SPRINT ST 14K
04 HD Dyna Wifes PINK RIDE ??
ANY DAY IS A GOOD DAY TO RIDE... |
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Mystic Red
Flying Brick Rider
Joined: 28 Mar 2005
Posts: 2330
Location: Twin Lakes Idaho
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| Posted: Mon Feb 02, 2009 8:00 pm Post subject: |
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I got the big ranch discount on the 6 sprung bobbins from Phil Marvin. I checked A&S BMW and they wanted $4.50 a piece for the unsprung variety. Max BMW had them in stock for $3.05. Quite a savings when you need 18 of the little buggers. I'm waiting on their delivery with baited breath. 
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Scott Hespelt, '94 K11LT
K11 OG #466 |
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darkwing
Joined: 27 Oct 2008
Posts: 10
Location: HANAHAN, SOUTH CAROLINA
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| Posted: Mon Feb 02, 2009 10:23 pm Post subject: Good deal! |
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I wish I had taken the time to go through those routes. I ended up waiting for my local dealer for about a week and a half. And even after they said they would call when they arrived...I had to call them to find out the parts had been in for 3 days!!! I love COMPETENT people
_________________
Thanx
Reece
94 k1100LT 101K and still rollin strong
bought in march of '08 with 87K as of Jan '09-96K.
07 Texas chopper 8k
07 TRIUMPH SPRINT ST 14K
04 HD Dyna Wifes PINK RIDE ??
ANY DAY IS A GOOD DAY TO RIDE... |
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endoman100
Rider in the Sky
Joined: 26 Jan 2009
Posts: 338
Location: Hastings Fl.
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| Posted: Sat Feb 07, 2009 9:12 pm Post subject: |
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I just order the bushings/roll pins and 2 lock rings from bikebandit.com
oem parts
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Item Name Quantity Total Price
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ROLL PIN 24 $73.20
LOCK RING 2 $0.76
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Subtotal: $73.96
Shipping & Handling: $7.95
Tax: -
Total: $81.91
It should be here in a week, Did you take the wheel off the forks or leave it on while replacing the bushings
_________________
In the words of the stones
Time Is On My Side
Yes It Is
1993 K1100RS
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Sat Feb 07, 2009 10:03 pm Post subject: |
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Each rotor carrier pair has 9 regular roll pins(bobbins as some of us call them) and 3 "springy" ones which are the ones that provide some resistance to motion.
What you need to do it right is 18 of the 34112310086 roll pins (9 per side) and 6 of the "spingy" 34112310995 roll pins. (3 per side)
I take the wheel off and then take the carriers off and do them while watching TV.
IF you decide to take the cariers off of the wheel, be very careful as the heads of button head bolts can stip if you're not careful. I use anti-siexe when I put them back in so it won't be so hard the next time.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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Mystic Red
Flying Brick Rider
Joined: 28 Mar 2005
Posts: 2330
Location: Twin Lakes Idaho
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| Posted: Sun Feb 08, 2009 12:53 pm Post subject: |
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| Quote: | | I take the wheel off and then take the carriers off and do them while watching TV |
+1 I used a small screw driver and a set of needle nose pliers to do the job.
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Scott Hespelt, '94 K11LT
K11 OG #466 |
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K11Martin
Mad Brick Rider
Joined: 22 Jul 2008
Posts: 123
Location: North Notts, UK
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| Posted: Sun Feb 08, 2009 1:00 pm Post subject: |
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This is strange as here in the UK, our K11s have 12 bobbins to each wheel...all identical.
They are a slip fit as opposed to being loose or tight, and are each secured with a wavy washer and a C clip. Each rotor therefore has a fair amount of free play during normal operation, and the wavy washers are there just to stop the rotors rattling.
A wheel kit costs around $45 - $50. I wonder why they're different stateside?
_________________
Currently riding a '93 K1100LT (ABS1) decked out with lights and aerials (Ex 70's Vespa rider)
Why not join the UK owners club at http://forum.bmw-club.org.uk/ |
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Phil Marvin
Rider in the Sky
Joined: 03 Apr 2003
Posts: 1389
Location: El Paso, Texas, USA
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| Posted: Sun Feb 08, 2009 2:31 pm Post subject: |
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Hi,
| K11Martin wrote: | This is strange as here in the UK, our K11s have 12 bobbins to each wheel...all identical.
They are a slip fit as opposed to being loose or tight, and are each secured with a wavy washer and a C clip. Each rotor therefore has a fair amount of free play during normal operation, and the wavy washers are there just to stop the rotors rattling.
A wheel kit costs around $45 - $50. I wonder why they're different stateside? |
According to the parts fiche, they are not different. The bike should have come from the factory with 9 plain "bobbins" and 3 spring "bobbins" per side, each being secured by a washer and a "C" clip. If your bike has 12 plain bobbins per side, it's either a legacy from a P.O. (Previous Owner), an incompetent mechanic ore a mistake from the factory. Here in the USA, at retail prices, a complete set (18 plain bobbins, 6 spring bobbins, 24 washers and 24 "C" clips) is $117.72 according to MaxBMW online parts catalogue.
Ride Safe,
_________________
Ride Safe,
Phil Marvin in El Paso, TX
'94 K75A/3
'95 K75RTP |
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RobWheatley
Flying Brick Rider
Joined: 06 Jun 2008
Posts: 261
Location: Chatham, Kent. UK
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| Posted: Sun Feb 08, 2009 5:15 pm Post subject: |
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Im in the UK too and both my K's had wavy washers on all the bobbins, so might be different spec in the Uk to the US
Rob
_________________
1999 K1100LTIC Smooth and Quiet Cruise, BFD & HID
1996 K1100RS. dead but not forgotten. |
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K11Martin
Mad Brick Rider
Joined: 22 Jul 2008
Posts: 123
Location: North Notts, UK
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| Posted: Sun Feb 08, 2009 7:30 pm Post subject: |
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| Phil Marvin wrote: | | If your bike has 12 plain bobbins per side, it's either a legacy from a P.O. (Previous Owner), an incompetent mechanic ore a mistake from the factory. |
But as I said;
| K11Martin wrote: | | ...here in the UK, our K11s have 12 bobbins to each wheel...all identical. |
That's twelve 'floating' bobbins - not solid ones. Hardly likely that thousands of bikes have suffered at the hands of an incompetent mechanic  .
I was just curious as to why Amarican spec bikes have only three 'loose' bobbins per wheel when ALL European bikes have twelve.
The bikes were marketed as having 'Floating brake discs', so how can three give any degree of 'float' when the others are rigid?
_________________
Currently riding a '93 K1100LT (ABS1) decked out with lights and aerials (Ex 70's Vespa rider)
Why not join the UK owners club at http://forum.bmw-club.org.uk/ |
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Saltcreek
Flying Brick Rider
Joined: 22 Oct 2008
Posts: 957
Location: New Hampshire
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| Posted: Mon Feb 09, 2009 9:05 am Post subject: |
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| K11Martin wrote: |
I was just curious as to why Amarican spec bikes have only three 'loose' bobbins per wheel when ALL European bikes have twelve.
The bikes were marketed as having 'Floating brake discs', so how can three give any degree of 'float' when the others are rigid? |
I think it's the other way around. Nine float, while the three sprung ones take up enough play to prevent rattle but still allow movement. But why floating disks in the first place?
_________________
Jim
1994 K1100LT Mystic Red, bfd, 37000 miles, sold 
2009 Wilderness Systems Zephyr 155 ST
2002 Litespeed titanium |
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Scott_Anderson
Site Admin
Joined: 05 Sep 2006
Posts: 3122
Location: Central Iowa, USA
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| Posted: Mon Feb 09, 2009 2:29 pm Post subject: |
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| Saltcreek wrote: | | K11Martin wrote: |
I was just curious as to why Amarican spec bikes have only three 'loose' bobbins per wheel when ALL European bikes have twelve.
The bikes were marketed as having 'Floating brake discs', so how can three give any degree of 'float' when the others are rigid? |
I think it's the other way around. Nine float, while the three sprung ones take up enough play to prevent rattle but still allow movement. But why floating disks in the first place? |
Thermal expansion when braking. Would be my not so expert opinion.
_________________
Ride safe.
1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold) |
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endoman100
Rider in the Sky
Joined: 26 Jan 2009
Posts: 338
Location: Hastings Fl.
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| Posted: Mon Feb 09, 2009 8:33 pm Post subject: |
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I don't know what is right or not, But at, www.bikebandit.com you have a choice with or without ABS. The ABS order sheet has roll pins, Without has roll pins with springs. I have a 1993 K1100RS with ABS so I odered what I thought was right When I take mine apart I will give an update.
Just looking at them I can't tell if three have springs or not.
Not gonna take mine apart until I order the seals for the forks aswell.
yeah there leaking cause of pitting in the stantions I will have to wet sand them better this time.." just used stainlesswool the firsttime" Did Ok until my son and I max'ed the bike out and went down a grass/bumpy road. bin leaking since.
I'm 275 lbs my son is 130 so there you have it ..to much weight.
road it alone for 6 months and no leaks until i took the grass road with my son.. live and learn I always say..
_________________
In the words of the stones
Time Is On My Side
Yes It Is
1993 K1100RS
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drmalacarne
Flying Brick Rider
Joined: 02 Mar 2008
Posts: 762
Location: São Paulo, Brazil
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| Posted: Tue Feb 10, 2009 6:51 pm Post subject: |
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I use a set of stainless steel bobbins that I bought from Motorworks.
www.motorworks.co.uk
[img] [/img]
Guilherme.
_________________
1994 K1100LT SE n° 0267
1998 HD Heritage Springer 95th anniversary
Yes, a Hog and a Beemer can live together! |
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chrisk1100rs
Big Brick Rider
Joined: 31 Dec 2008
Posts: 63
Location: Isle of Man
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| Posted: Wed Feb 11, 2009 6:10 am Post subject: Disk Bobins |
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| Mystic Red wrote: | | Thanks for the tip, Reece, I just ordered the replacement parts and will be doing it before spring, although I have a set of Duck's replacement rotors to install also. Where did you buy your bushings? I looked at A&S for $4.58 per non sprung but Max had them for $3.05 :shock: . I'm sure Chicago BMW was cheaper but I wanted them during my lifetime. :lol: |
The link below will take you to the replacement parts Photo from Moto bins and you can see them all. I used these parts Two years ago and they were the same as the ones instaled apart from the fact of the material
http://www.motobins.co.uk/displayfinal.php?function=show&subs=103b&title=BRAKE+DISC+PARTS
Chrisk1100rs
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Phil Marvin
Rider in the Sky
Joined: 03 Apr 2003
Posts: 1389
Location: El Paso, Texas, USA
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| Posted: Wed Feb 11, 2009 3:48 pm Post subject: |
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Hi, All,
I have ordered from Motobins and have nothing but good to say for their service. (Ordered parts on Saturday; they arrived the next Thursday. I am in El Paso, Texas, USA and Motobins is in the United Kingdom!) That said, we are now talking about the Grimeca steel brake bobbins. No argument - they work. However, the BMW parts are aluminum (aluminium to you who speak the Queen's English). They will wear before the brake disc carrier. Not so with the steel ones. I would rather replace the bobbins than have to replace the worn-out disc brake carriers and, since BMW doesn't sell them separately, the discs as well.
That's my OPINION (NOT fact).
Ride Safe,
_________________
Ride Safe,
Phil Marvin in El Paso, TX
'94 K75A/3
'95 K75RTP |
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endoman100
Rider in the Sky
Joined: 26 Jan 2009
Posts: 338
Location: Hastings Fl.
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| Posted: Sat Feb 21, 2009 1:08 pm Post subject: |
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Flying Duck You Were Right.
| Quote: | you said. Each rotor carrier pair has 9 regular roll pins(bobbins as some of us call them) and 3 "springy" ones which are the ones that provide some resistance to motion.
What you need to do it right is 18 of the 34112310086 roll pins (9 per side) and 6 of the "spingy" 34112310995 roll pins. (3 per side) |
Just replaced mine and they were so worn that the springs were gone but you could tell they once had them.
I notice the inside hole difference after i got them out
for now I will use all the same rollpins Its alot better than I had but i will buy the spring ones soon. as always thanx
_________________
In the words of the stones
Time Is On My Side
Yes It Is
1993 K1100RS
Last edited by endoman100 on Sun Feb 22, 2009 6:54 pm; edited 1 time in total |
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rydor
Flying Brick Rider
Joined: 16 Nov 2006
Posts: 1304
Location: Southern Illinois, U.S.A.
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| Posted: Sun Feb 22, 2009 4:13 pm Post subject: |
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| I was thinking the same thing, Phil. |
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