do my brake calipers need restored too??


Technical information and Q&A applicable to all years and models of Goldwings
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made2care
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do my brake calipers need restored too??

Postby made2care » Sat Jun 21, 2014 10:32 am



again, I am working on a terribly neglected 87 interstate and while replacing the brake pads noticed the following:
- somewhat difficult to push in the pistons, had to use a c-clamp
- when I pulled the lever, only one piston moved. is this normal?
- what are the signs that the caliper needs some tlc, besides the fact that a pistons seizes?

again , thank you for your help.



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virgilmobile
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Re: do my brake calipers need restored too??

Postby virgilmobile » Sat Jun 21, 2014 1:16 pm

When I finished mine,with the bleeder open and no fluid,I could push each piston to the bottom using both hands and thumbs.
I did clean and polish the bore,piston and the crud from under the piston seal ring(in the groove).
I also tested the piston in the bore before I put the seal ring back in to be sure it would go all the way in without binding.Prelube with brake fluid only,then flush ALL the old fluid out of the bike and replace it with new dot4.

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made2care
Posts: 449
Joined: Sun May 25, 2014 7:36 am
Location: Woodward, Oklahoma
Motorcycle: Yamaha 750- college days- sold
Yamaha virago- sold
Honda VTX 1300- sold
Honda shadow Aero 1100- sold
1987 Honda Goldwing interstate "Sleeping Beauty"- sold
02 kawasaki vulcan 1500 drifter - sold
1997 Honda goldwing SE 1500 - AKA "Black Beard" (current)
1981 GL1100 - "The Wanderer"

Re: do my brake calipers need restored too??

Postby made2care » Sat Jun 21, 2014 2:44 pm

Okay, great! Thanks for the tips.

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Ed Z
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Re: do my brake calipers need restored too??

Postby Ed Z » Tue Jul 01, 2014 9:46 pm

It’s a surprisingly small amount of corrosion in the seal groove that makes the piston difficult to move... The trick for getting both pistons out is to use a block of plywood (start with 3/4") and use pressurized air via the inlet hose hole or ya can just pump em out using the lever... The second method tends to be messy though... Then ya just keep stepping down in the wood thickness till both pistons are just about completely out... I then clean the grooves out very thoroughly and then put some caliper grease in there... I always use new seals... Make sure you clean the pistons very well and inspect for wear and scratches... once you put the pistons back in the caliper you will notice they move rather easily... If they don't then you still have crud that needs to come out of the groove area...




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