BMW K bikes (Bricks)

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1Back to top Go down   front brakes sqeal Empty front brakes sqeal Tue Jun 03, 2008 10:50 pm

yankeeone

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Ok, it summer , now there are people out there to hear my sqealing brakes 87 k75 , any help?

    

2Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Thu Jun 05, 2008 4:57 pm

Crazy Frog

Crazy Frog
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Look at the bight side...... You could have a Harley with straight pipes Twisted Evil .
My neighbours never hear my bikes except for the brakes.....
I have not found any way to solve the problem.

Bert

    

3Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Thu Nov 20, 2008 1:42 pm

librarian

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Don't remember the part number, but that's a Google search for you, but there are BMW shims (made for BMW cars) for the Brembo that go between the piston and the pad, and when properly greased they eliminate the squeal. Worked on my '85. Very Happy

    

4Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Tue May 31, 2011 5:18 am

Richard1

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librarian,
Sure would be good to know where you got the shims. My 85 brakes squeal terribly.
Richard1

    

5Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Tue May 31, 2011 8:23 pm

Guest

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You can buy a set of universal brake pad shim for cars and snip them to fit the backs of your brake pads, but keeping them aligned to the pads might be an issue. Or, alternately, carefully apply some semi-liquid automotive 'anti-squeal' compound. Also, cleaning the scale and rust that builds on the piston surfaces and the backs of the pads will often reduce the noise. I also bevel the edges of the surface of the pads and lightly scour the contact surfaces.

I try not to squeeze the brake lever tenderly but apply it firmly when coming to a stop (other than on loose gravel, of course) and this seems to help as they seem to 'glaze' a bit with gentle use. The inexpensive ICER pads from Motobins are a soft compound pad, have decent enough 'feel', don't squeal very much as compared to some EBC, Ferodo, the OEM pads and others, and more importantly haven't scored the brake discs over more than a year's hard use at both ends. If I had some extra money laying about I'd find a local source for the excellent Dunlopad. I used them in both my K1200S and my R1150R with never a problem.

    

6Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Wed Jun 01, 2011 3:21 am

K-BIKE

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Hi Yankeeone,
Your friendly local Mercedes Dealer can supply for a quite reasonable sum a 120 gram or 4.2 oz. container complete with brush in the lid, of Bremsenpaste part number A001 989 47 51, that is the magic brake squeal paste.
Regards,
K-BIKE

    

7Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Wed Jun 01, 2011 5:17 am

charlie99

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quickly writes that down ....thanks k-bike


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%Ofront brakes sqeal Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

8Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Wed Jun 01, 2011 5:21 am

blaKey

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Thanks K-BIKE, I'll have a look for some tomorrow.


__________________________________________________
Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

9Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Wed Jun 01, 2011 6:43 am

Richard1

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Thanks TWB and K-Bike.
I will clean out the dust, bevel the edges and scour the pads. I will also get some Bremsenpaste and apply that.
I'll let you know how it works.
I'll also be more aggressive in applying the brakes.
Guess I have been too gentle while learning to ride the K. It's new to me.
As usual, this forum has been a great help to me in learning about the K bike.
Thanks again.
Richard1

    

10Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Thu Jun 02, 2011 2:37 am

K-BIKE

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Word of warning that should be obvious to all on the list but for anyone who comes later do NOT (and I am shouting) get the Brensenpaste on the friction side of the pad otherwise the results will startle you when you try to stop affraid
Regards,
K-BIKE

    

11Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Thu Jun 02, 2011 3:28 am

Guest

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Too right, K-Bike! A coupla words of caution to be heeded.

    

12Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Thu Jun 02, 2011 6:12 am

Richard1

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Thanks for that warning. I just ordered the Brensenpaste yesterday.They did not have any but ordered it.
Give us a hint as to the results of your warning - no stopping or sudden stopping?
Richard1

    

13Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Thu Jun 02, 2011 6:47 am

blaKey

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You'll grab a handful of brake and you'll just keep rolling along... What a Face


__________________________________________________
Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

14Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Thu Jun 02, 2011 8:35 am

Richard1

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Thanks blakey. I'll be careful. affraid
Richard1

    

15Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Thu Jun 02, 2011 7:17 pm

Guest

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@K-BIKE wrote:do NOT (and I am shouting) get the Brensenpaste on the friction side of the pad affraid
K-BIKE

To illustrate the point further in case it's missed, the object is to (not slather, just coat) the paste against the metal backing of the pad because its properties help reduce the high-speed or high-frequency vibration that can occur when hydraulic forces apply pressure to the pistons which push against the back of the pads. Those squeals are often just vibration happening, and the paste acts as a cushion, of sorts. It's not always a glaze on the disc and pads. So, once again boys and girls, it goes between the piston and the back of the pads.

I have seen a customer's car brought in after the customer decided to perform this service on his own vehicle. He was shaking as he drove it back to the workshop, wondering why his brakes 'felt very, very mushy'. The blue goo had oozed all over the calipers, discs and pads. What a mess.

    

16Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Thu Jun 02, 2011 8:03 pm

Richard1

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Thanks again TWB and all. I will be very careful. Your advice is well taken.
Richard1

    

17Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Fri Aug 26, 2011 6:29 pm

g35corona

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I am currently experiencing the same squealing problem with both front and rear brakes. What was the outcome of using the paste? Did it work? Any new insight into this?


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Bob

;BMW;

ex:1986 K100 RT Vin #0091835

2012 R1200 GS
    

18Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Fri Aug 26, 2011 6:58 pm

Inge K.

Inge K.
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I`m using some thin rubber foil to avoid the squeal, this rubber foil is made for this purpose.
It`s should be fixed on the rearside of the pads and have one adhesive side, and because of
that it function best on new pads or well cleaned used ones.
Don`t know if it`s avaiable at your place tough.

Inge K.

    

19Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Sat Aug 27, 2011 7:08 pm

g35corona

g35corona
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Thanks Inge. I will look for it as it seems it would be less messy. I've been giving this a little more thought as my situation may be unique. Both front and rear brakes are squealing but I can make it go away by applying and holding the brakes on for a few seconds at speed. This leads me to believe it is not vibration. The bike has less than 16,000 kms on it and the pads would be original so I think would be hard and brittle given they are 25 years old. I think I will live with the squeal for a few more months and then replace the pads (including the lube or rubber foil) over our winter.


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Bob

;BMW;

ex:1986 K100 RT Vin #0091835

2012 R1200 GS
    

20Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Sat Aug 27, 2011 10:04 pm

RicK G

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I worked for Suzuki in Oz for a whilein the 70s and at the time we had a really bad problem with the twin discs on the old now but new then water cooled 750s of a brake squeal. We spent many months in conjunction with the factory trying to fix the problem but only stumbled on the problem when an apprentice hammered the axle thru and damaged the bearings, when we replaced them with new after the customer complained of a noise and the brakes stopped squealing,

Apparently the bearings were a bad batch and when replaced all was OK.



Moral of the story check the front wheel bearings as well.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 2004 K1200GT 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

21Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Sun Aug 28, 2011 4:31 am

geordnz

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I got asked about my squeal the other day. I told the asker that it's my pedestrian safety warning device. Lets them know i'm there with out scaring the s*%t out of them with the horn. Razz

    

22Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Sun Aug 28, 2011 4:59 am

charlie99

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@geordnz wrote:I got asked about my squeal the other day. I told the asker that it's my pedestrian safety warning device. Lets them know i'm there with out scaring the s*%t out of them with the horn. Razz





lol l front brakes sqeal 44271

    

23Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Fri Oct 16, 2015 11:13 am

Kioors

Kioors
active member
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Doesn't the rubber backing tape destroy the "sharpness" of the brake?

I have  the same problem. Never had it with oem parts earlier, but now, upon installing green (sintered?) brembo pads, the squealing is enough to make childeren reach for the ears. Sad 

I'm gonna try a piece of ondinary duct-tape to the back of the pads, but i'm afraid no backing will help, as I fear the green pads are just to hard, and eating up my disks.

I'll let you know.


__________________________________________________
1989 K100RS 16v
1991 K100RS 16v - For sale
1993 Ducati 750 SS - For sale
1992 Ducati 907i.e.
    

24Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Sat Oct 17, 2015 7:52 am

indian036

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I haven't had the problem on the K, but on many cars (mine and customers) I've used the lubricant successfully. 

As earlier posters wrote, it goes between the pad back and the piston. Best way is to apply sparingly to the piston circles. 
In addition, a small smear where each brake pad contacts the caliper, and if necessary, where the pads touch the pins that hold them in place. 

The squeal is the vibration of the pad against anything it contacts while the brake is being applied. 

Bill


__________________________________________________
1985 K100RT  VIN 0028991  My original Very Happy   (Historic rego)
1985 K100RT  VIN 0029036  BOB the Blue Old Bike  (Historic rego)
1990 K100LT  VIN 0190452  Work in progress
1984 K100RT  VIN 0023022  Work needing lots of progress

1986 K100RT  VIN 0090542  Work needing lots and lots of progress
1993 K1100LT  VIN 0183046  Work in progress
1993 K75S  VIN 0213045  Newest toy, slightly non-original
    

25Back to top Go down   front brakes sqeal Empty Re: front brakes sqeal Sun Oct 18, 2015 9:46 am

Holister

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@Kioors wrote:....
I'm gonna try a piece of ondinary duct-tape to the back of the pads, but i'm afraid no backing will help, as I fear the green pads are just to hard, and eating up my disks.

I'll let you know.
Duct tape will just wear away very quickly and its not standard procedure. Bits may dislodge and interfere with your braking just when you need it the most. Anti-squeal paste is the best thing to use and sparingly. Its sticky so it doesn't migrate to other brake parts.


__________________________________________________

1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
  front brakes sqeal Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

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