Brake pad shims.

Information and questions on GL1000 Goldwings (1975-1979)
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Motorcycle: 1978 Honda GL1000
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Brake pad shims.

Post by pshaginaw » Sat Dec 17, 2011 2:03 pm

Upon dissambly of the '78 GL1000 I am restoring, I found one of the four brake pad shims on the front brakes was missing, and both of the shims on the rear brake pads were missing. All brakes were operating properly before dissambly, but need a rebuild. How critical are these shims? What is their function? I feel they may provide a way for the force of the piston to be evenly distributed over the back surface of the pads, or they may just be a way of compensating for change in pad thickness as wear occurs. Will the safe operation of the brakes be compromised if they are omitted?

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Re: Brake pad shims.

Post by WingAdmin » Sat Dec 17, 2011 7:42 pm

They're primarily to keep the metal of the pad from contacting the metal of the piston, reducing hard vibration - and noise. They get rid of the "squeal" noise you associate with brakes, and help the pads to wear more evenly as a result.

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Re: Brake pad shims.

Post by unkle buckie » Fri Jun 26, 2015 12:11 am

ironically enough, i've just removed the shims from my front brakes because the squeal coming off them was almost reducing me to tears every time i rode it. so far so good, but i believe there still to be a little drag noise from the rear which is annoying but bearable... any other thoughts on the issue?

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