stuck brake caliper piston - Steve Saunders Goldwing Forums

  • 1 Post By rayjoe
  • 1 Post By DaveO430
  • 1 Post By Wilcoy02
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post #1 of 7 (permalink) Old 04-15-2019, 06:28 PM Thread Starter
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Join Date: Jul 2009
Location: Yacolt, Wa./ killeen TX.
Model: 1100
Posts: 8,071
stuck brake caliper piston

ok it is off a 1000. tis bike was supposed to be someones fake build and sold as a build. It is stripped of all bits we consider normal. no tach no speedo nada. A new friend brought it to me as it was only running on three pistons and number 3 carb was receiving almost no fuel. Carbs were sent out for rebuild by the bikes builder which I say BS too. They are now at Pistol Petes for a real cleaning. Brake lines weather checked and cracked, new ones on order. Rear Brake was n to even touched as it was rusted to non operable. Half of the caliper is cleaned up nice! Problem at this point I have a stuck piston in the other half. am looking for ideas to get this piston out.

Thank y'all for already answering on other folks posts gotta love getting answers when no one has to respond to the question that was already asked.

They are all perfect
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Last edited by bobalou; 04-15-2019 at 06:34 PM. Reason: I have my answer.
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post #2 of 7 (permalink) Old 04-15-2019, 06:59 PM
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Location: Glendale, Arizona, USA
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All I can suggest is lots of penetrating oil and put a clamp on the piston to push it in. That has worked for me on a couple of occasions. Sometimes it can take a couple of days.

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post #3 of 7 (permalink) Old 04-15-2019, 07:01 PM
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In the past I have had good luck using an air compressor. BE CAREFUL NOT TO GET BODY PARTS (fingers) IN THE WAY. I stick a thin piece of wood in between to cushion the caliper when the piston flys out.

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post #4 of 7 (permalink) Old 04-15-2019, 07:11 PM
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Location: Amity, Arkansas, USA
Model: 2010 GL1800
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Those opposed piston calipers can be fun. Put it back together and clamp the already free piston in so it won't move then connect the brake line and pump it out. Pretty unlikely normal air pressure will move it.
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post #5 of 7 (permalink) Old 04-15-2019, 09:44 PM
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Location: Marengo, Ohio, USA
Year: 1983
Make: Honda
Model: GL1100
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What has always worked is to put the caliper back together.
Put a piece of wood or something for a stop of the pistons.
Connect a grease gun up to the line in to the caliper.
Pump until both pistons are out.
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post #6 of 7 (permalink) Old 04-16-2019, 10:18 AM
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Join Date: Jan 2019
Location: Pulaski, NY
Year: 1983
Make: Honda
Model: Aspencade
Posts: 20
I made a piston puller from rubber corks bought at Ace hardware. A bolt, some washers and nuts to squeeze the cork and expand it inside the piston. I had to use some emery cloth around it for grip but they popped right out after I had tried all the other methods.
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File Type: jpg caliper piston puller.jpg (31.9 KB, 6 views)
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post #7 of 7 (permalink) Old 04-16-2019, 08:33 PM
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Location: Spring, Texas, USA.
Year: 1980-81-82-83
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I've never had to do it but I heard that a grease gun works well and fits right on to the bleed nipple.

I do know though that a lever action gun puts out up to 9000 psi and a pistol grip 6000, so that ought to do it!

For what it's worth and if I may be so bold? The current rebuild of the `80, `81, `82 & `83 GL1100STDASPENSTATE can be followed on in a thread called "The plan is to turn 140,000 into 50,000."

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