BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down   Brake issues? Empty Brake issues? Sun Mar 25, 2012 10:36 am

ReneZ

ReneZ
Life time member
Life time member
Bit of a strange problem. I have refurbished my brake calipers, renewing the rubber seals and cleaning everything out, putting the pistons back with the Brembo supplied silicon grease. I cleaned out the master cylinders and fitted everything back with same grease. I fitted stainless brakepad pins and greased the whole lot with copaslip. renewed all the brake fluid. I now find that its almost as if the brakes are not properly releasing. When you turn the wheels you notice the 'grinding' of the brakes. I appreciate you would expect possibly some 'touching', but it just feels like too much.

Has anyone had similar experiences and what did you do? The only thing I can come up with is that the spring behind the plunjers (not renewed) is not strong enough to pull the caliper pistons back enough to free the pads.



Appreciate your comments.


__________________________________________________
Greetings from Florida! Having a 'new' K  :cyclops:    Surprised-o: 

Rene


BMW K100 - 1985 (0030029) Brake issues? Rain
BMW K1200GT - 2003 (ZK01223)
    

2Back to top Go down   Brake issues? Empty Re: Brake issues? Sun Mar 25, 2012 12:08 pm

charlie99

charlie99
VIP
VIP
hmmm,, ....an interesting issue rene .

i too had a similar issue before changing my brake fluid ...and master cylinder refurbish kit .....interstingly what happened after wards was that i lost front brake activation ...i had inadvertantly overfilled the master cylinder resevoiur ...untill i drained some more fluid from the system so there was a definate pocket of air in the container .

the refurbish kit came with a new piston , spring and rubbers of corse and i had linished the bore of the master cylinder .

since doing the change i havent noticed any binding of the brakes since ....the rubbing of the pads on the disks ...previously a pain in the proverbial, has disapeared completly .


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OBrake issues? 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 ..
    

3Back to top Go down   Brake issues? Empty Re: Brake issues? Wed Mar 28, 2012 7:45 am

ReneZ

ReneZ
Life time member
Life time member
Thanks Mate! Anyone else with experience to share?


__________________________________________________
Greetings from Florida! Having a 'new' K  :cyclops:    Surprised-o: 

Rene


BMW K100 - 1985 (0030029) Brake issues? Rain
BMW K1200GT - 2003 (ZK01223)
    

4Back to top Go down   Brake issues? Empty Re: Brake issues? Wed Mar 28, 2012 10:52 am

japuentes

japuentes
Life time member
Life time member
Hi there, I had a similar problem (mine was due to aging dust covers and seals and crude in the calipers) and solved it by refurbishing the calipers with the kits as you did, but I had previously replaced both master pistons and while searching the net for info on the subject I read a case of non retracting pads due to and small obstruction in one of the system pinholes, dont remember wich, so during my work I was very carefull that all the holes were clear.
I´ve had no issues afther the refurbish.
Hope this helps.
Best regards
JAP

    

5Back to top Go down   Brake issues? Empty Re: Brake issues? Sat Mar 31, 2012 2:45 am

ReneZ

ReneZ
Life time member
Life time member
OK, time to take them apart again then! I'll look into the master cylinder refurbishing kits. Cheers team!


__________________________________________________
Greetings from Florida! Having a 'new' K  :cyclops:    Surprised-o: 

Rene


BMW K100 - 1985 (0030029) Brake issues? Rain
BMW K1200GT - 2003 (ZK01223)
    

6Back to top Go down   Brake issues? Empty Re: Brake issues? Sat Mar 31, 2012 4:17 pm

K-BIKE

avatar
Life time member
Life time member
Dirt in the return hole in the master cylinder can cause that issue.
Regards,
K-BIKE

    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum