QuestionHi Mark. Thanks for being available to ask questions. Here are the specifics: 1982 GL1100 Interstate Goldwing, 46,000 miles of which 26,000 are mine. On the second ride of the season, I smelled brakes about 1 mile in to the ride. I pulled over and found the front left caliper had locked up, or at least was on way too much, and I have the blisters to prove it after touching the rotor! Anyway, after opening the bleeder on that caliper, the wheel freed it. I let out about a tablespoon of fluid. I got it home a-ok just using the rear brake.
I replaced the front pads last season and slowly bled out all the fluid in the lines. So do you think I need to rebuild the calipers (I did that on the rear one two years ago) or do you think it is a problem with the master cylinder? I was surprised releasing the brake pressure freed the caliper, because I figured it was seized. But maybe this was just an early warning sign. In my 26,000 miles on this bike, they have not been rebuilt.
Any advice is appreciated.
AnswerHi Bob,
I suspect the left front caliper needs removed, thoroughly cleaned & resealed, reinstalled, and bled. The right front caliper works in concert with the rear brake.
Once the brake fluid gels & crystalizes in calipers, it often etches the inner caliper surfaces and welcomes repeats of this same offense.
I would buy extra caliper seals and keep them on hand for such events. They are cheap enough to permit buying extras.
When you perform the repairs, remove all rubber boots (dust covers), caliper pins, and fasteners. Investigate them for rust and corrosion. Check caliper areas where pins are located for same. Apply a finger swipe of anti-seize lube on the pins. Rubber boots may become damaged with removal. Stock up on these parts, too. You'll find the caliper again free floats after clenaing and lubing. Finish with new brake pads, new fluid, and bleeding.
Respectfully,
Mark Shively
