! URGENT ?: Rear brake pad spring friction to the rim base problem
 

Hello all,

I changed tyres of my R80 GS Basic 1996 (rim and tyre is also similar to R100 GS) with new ones. After mounted the rear rim I heard a metal friction sound. Bike was not riding easily as if there is a resistance.

I checked and found that one of the rim mounting bolt was mounted
without its washer/spacer. May be because of this, the bottom spring
with rubber touches to the rim and makes a path there. Rubber has
serious wear and spring has also some wear on it.

I thought I placed the springs wrong. They should mounted face down not
to rim but to final drive unit. I checked the manual and it was correct.

I don't know how to solve this problem. Everything looks normal but the
friction and sound continues.

What happens if I place the springs vice versa/from the bottom side of
the rear pads? Does it solve the problem? I tried it but couldn't mount the springs reverse.

Enclosed you can see the pictures of worn springs together with rubber and the path on the rim base which springs made the friction and caused the problem.

What can be wrong with it?

Best regards,

on the paralever models the springs should be mounted inboard of the shoes eg between the bevelbox and the shoes the rearmost spring has the rubber on it and the damper(rubber)flat side faces the shoe and cam and the bevel side faces towards the wheel. It appears you have mounted them out board of the shoes ie like the earlier models set up thus the reason they are jamming up the rear wheel. I think this is what you said you tried to do it is very awkward but can be done - try mounting the springs into the shoes before placing them onto thefront and rearholder and cam you need to use a lever to prise the shoes apart to fit them in place - it is difficult and an extra pair of hands helps also its worth fitting new springs and you need a new rubber anyway - Hope this helps.