How to remove seized pistons from brake calipers


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VentedGibbon
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Location: Charleston, WV
Motorcycle: 1982 GL1100
1985 CB650SC

How to remove seized pistons from brake calipers

Postby VentedGibbon » Sun Mar 22, 2015 8:23 pm



Pistons seized in your calipers? Never fear!

1. Remove the caliper from the bike and remove the bleeder screw.

2. Go to your local hardware store, find a grease fitting to go into your bleeder screw hole. M8 threads. Also, get a bolt to plug the hole where the banjo bolt for the brake line goes.

3. Using your grease gun, pump grease into the newly installed grease fitting until the grease comes out of the hole for the brake line.

4. Thread in the bolt to plug the brake line hole.

5. Using any thin, sturdy, and flat object (I used my wrench), pump the grease into the caliper until both pistons are pressed against the object. You don't want one caliper to pop out while the other is still seated.

6. Pull out your block and pump the grease until the pistons pop out. It may be useful to wedge one of the pistons against the caliper itself until both have popped out. Now the fun part, get all the grease out!


I hope this helps. I saw this on a YouTube video so I can't take too much credit. If anyone figures out a good method of removing all the grease, let me know.


Do or do not, there is no try.

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1982 GL1100
1986 CB650SC Nighthawk

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littlebeaver
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Re: How to remove seized pistons from brake calipers

Postby littlebeaver » Sun Mar 22, 2015 10:20 pm

Welcome to the site.....already helping out.. Cool man thanks....

Mr. C
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Location: Moncton, New Brunswick, Canada
Motorcycle: 1981 GL1100 interstate
1995 GL1500 interstate

Re: How to remove seized pistons from brake calipers

Postby Mr. C » Sun Mar 22, 2015 11:18 pm

Dude, next time just remove the caliper from the bracket an pump the brake, it'll push the piston ....piston's out.

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RBGERSON
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had every year from 75 to 83

Re: How to remove seized pistons from brake calipers

Postby RBGERSON » Mon Mar 23, 2015 8:38 am

+1 do it on the bike..with the caliper hangin off.
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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VentedGibbon
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Location: Charleston, WV
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1985 CB650SC

Re: How to remove seized pistons from brake calipers

Postby VentedGibbon » Mon Mar 23, 2015 8:41 am

I don't have the bike at my house I'm fixing it in pieces, just another way to do things.
Do or do not, there is no try.

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1982 GL1100
1986 CB650SC Nighthawk

Mr. C
Posts: 10
Joined: Mon Aug 13, 2012 6:53 am
Location: Moncton, New Brunswick, Canada
Motorcycle: 1981 GL1100 interstate
1995 GL1500 interstate

Re: How to remove seized pistons from brake calipers

Postby Mr. C » Mon Mar 23, 2015 11:05 am

Another way to do it if you have a compresser is use air.

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WingAdmin
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Re: How to remove seized pistons from brake calipers

Postby WingAdmin » Mon Mar 23, 2015 2:09 pm

This is a good way to do it if you can't use the brake lever to pump it out, or if they are in there too tight to use an air compressor - a grease gun can develop much more pressure than an air compressor.

Brake cleaner will dissolve and remove the grease fairly well.

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djoyner
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Re: How to remove seized pistons from brake calipers

Postby djoyner » Mon Mar 23, 2015 4:04 pm

I used this method on my '78 and it worked great!
D J
2006 VTX 1300S
1978 GL1000
1985 GL1200 Interstate
1995 GL1500 Interstate

Visit me at:[url http://www.dennisjoyner.net][/url]

JWILLWON3
Posts: 6
Joined: Tue Nov 04, 2014 10:53 am
Location: Romulus Mi
Motorcycle: 1983 Goldwing 1100

Re: How to remove seized pistons from brake calipers

Postby JWILLWON3 » Mon May 04, 2015 9:48 am

HEAT WILL MAKE THE GREASE FLUID AND RUN OUT, TRY AN OLD PAN FILLED WITH BOILING WATER OR HEAT GUN !

JWILLWON3
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Re: How to remove seized pistons from brake calipers

Postby JWILLWON3 » Mon May 04, 2015 9:52 am

ALSO INSTEAD OF FILL THE CALIPER FIRST WITH GREASE, JUST FILL WITH ANOTHER FLUID, BRAKE FLUID OT EVEN WATER, YOU STILL GET THE HYDRAULIC PRESSURE AND LESS GREASE !

harvey01
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Re: How to remove seized pistons from brake calipers

Postby harvey01 » Mon May 04, 2015 11:31 am

I wonder for cleaning if after you have done the best you can with brake cleaner and dirtied up a bunch of rags if you just put it in the dish washer, set it on hot water and let it do its thing? Of course the significant other might have some thoughts.


harvey
Ride Safe and Ride Often


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