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doug g
Guest
why is it that my brakes squeal only when I roll the bike backwards? 1979 850G
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BassCliff
Guest
Hi,
Only backwards? Hmmm.
Normally, you will use a little brake/caliper grease between the shim pad (#3) and the brake pad (#2) so that it dampens (or changes) the vibrations to make them inaudible to human ears.
But I don't know why this happens to you only backwards.
Thank you for your indulgence,
BassCliff
Only backwards? Hmmm.
Normally, you will use a little brake/caliper grease between the shim pad (#3) and the brake pad (#2) so that it dampens (or changes) the vibrations to make them inaudible to human ears.
But I don't know why this happens to you only backwards.
Thank you for your indulgence,
BassCliff
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BassCliff
Guest
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bobthebiker88
Guest
I'm goin with worn pads. check the condition of them, replace as needed.
Steve
GS Whisperer
There is a shim missing in BassCliff's picture. It goes between the pad and the caliper (or piston) and on the trailing edge. This puts a wedge of effort on the pad. By going backwards, the wedge is on the leading edge, leading to chatter. Considering the ratio of how much time you spend going backwards compared to going forward, I would not worry about it. 
.
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BassCliff
Guest
Steve, do you mean this 'spring pad'?
I hope I'm not missing anything and that it just wasn't in the picture.
Thank you for your indulgence,
BassCliff
I hope I'm not missing anything and that it just wasn't in the picture.
Thank you for your indulgence,
BassCliff
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Adler
Guest
I wouldnt dare second guess Steve but that looks ok for the front caliper... the rear on the other hand has that directional shim
(part 13)
(part 13)
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BassCliff
Guest
Now that I think about it, Mr. doug g never mentioned if it was the front or the back. Either way:
Thank you for your indulgence,
BassCliff
Steve
GS Whisperer
Oh, you're not "second guessing", you're just flat-out catching me in a rare mistake.
:clap: :clap:The last bike brakes I worked on were rears, so that's what stuck in my mind.
I had also changed the front pads on my son's car, and they had the c-shaped shims, too.
Yep, that c-shaped shim is only on the rear brake on the GS.
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G
Guest
Guest
You sure the sound is from the brakes? could be bearings. Just a thought.
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doug g
Guest
Steve, do you mean this 'spring pad'?
I hope I'm not missing anything and that it just wasn't in the picture.
Thank you for your indulgence,
BassCliff
I have the old style calipers still on my bike. Duanage got me some newer style calipers but life has been so crazy I have not had the opportunity or cash to rebuild them and install on my bike yet.
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doug g
Guest
not yet. Life and cash has been an issue.
D
doug g
Guest
Oh, you're not "second guessing", you're just flat-out catching me in a rare mistake.
The last bike brakes I worked on were rears, so that's what stuck in my mind.
I had also changed the front pads on my son's car, and they had the c-shaped shims, too.
Yep, that c-shaped shim is only on the rear brake on the GS.
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front old style calipers with the round disc style pads.
Pads are fairly new and they used to squeal when going forward and backwards and now with the new pads it happens only backwards.
D
doug g
Guest
there are no shims on the early style calipers from what I see.
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BassCliff
Guest
Hi,
I didn't notice we were talking about '79 GS850G front brakes. Yes, that year was different from the '80+ years. Sorry for my confusion.
Thank you for your indulgence,
BassCliff
I didn't notice we were talking about '79 GS850G front brakes. Yes, that year was different from the '80+ years. Sorry for my confusion.
Thank you for your indulgence,
BassCliff
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tell me about it, I intend to rebuild my GS this spring if I can find the time and a decent painter. Mostly it's about the time.
CRC Disc Quiet spray. Costs under 5 bucks & works great. Is a step up from using copper grease or similar.
Dan
Dan
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doug g
Guest
I have a buddy who does great painting. if you want his number let me know.
