Caliper Piston stuck


Information and questions on GL1100 Goldwings (1980-1983)
  • Sponsored Links
robertdawber
Posts: 285
Joined: Fri Aug 07, 2009 9:24 pm
Location: Eliot, ME
Motorcycle: 1983 GL1100 Interstate

Caliper Piston stuck

Postby robertdawber » Sat May 29, 2010 7:34 pm



I am trying to rebuild the rear caliper on an 83 GL1100I
I have tried air, PB Blast, heat-etc.
I am at a loss-any ideas on how to get it out? One came out hard-this one is not moving at all. I have the first on blocked in but the air will not push it out.
It is currently level-at the bottom, so I am unable to grip it.
Bob



rrmiller73
Posts: 42
Joined: Tue Nov 10, 2009 12:16 pm
Location: Mt. Juliet, TN
Motorcycle: 1984 GL1200 Aspencade

Re: Caliper Piston stuck

Postby rrmiller73 » Sat May 29, 2010 9:17 pm

Maybe hook it back up to the brakeline and pump it out with hyd. pressure?

mfortier
Posts: 5
Joined: Thu Oct 29, 2009 10:35 pm
Location: Winnipeg, Manitoba
Motorcycle: 1983 GL1100A Aspencade

Re: Caliper Piston stuck

Postby mfortier » Sat May 29, 2010 11:56 pm

I had the same problem with the rear caliper on my 83 GL100A. I had to use hydraulic pressure to break it free. It took a considerable amount of force. Make sure you have something in front of the piston so that it does not fire completly out of the bore when it releases. A 1/8" piece of steel stock with a rag worked well for me.

User avatar
RBGERSON
Posts: 2612
Joined: Tue Mar 09, 2010 7:57 am
Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: Caliper Piston stuck

Postby RBGERSON » Sun May 30, 2010 7:08 am

Do not heat rubber in there, some have had success using a grease gun on the bleeder valve, easiest is using the bikes brake system. using compressed air requires a sealed unit..bleeder valve mod and a tight o ring inside and 120 lbs. of pressure sometimes.
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

User avatar
stevenstrack
Posts: 96
Joined: Mon Apr 26, 2010 4:16 pm
Location: Virginia Beach, VA
Motorcycle: 1983 GL1100I

Re: caliper piston stuck

Postby stevenstrack » Sun May 30, 2010 10:04 am

I would try to reinstall the piston that came out and re-bleed to get the pressure to build up and push it out again. Make sure you put a piece of metal or bar stock about 1/8th inch between pistons and the caliper wall as you pump them out so that they come out in unison. If you have to block the piston side that came out completely to get the other side to move.

User avatar
WingAdmin
Site Admin
Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Caliper Piston stuck

Postby WingAdmin » Sun May 30, 2010 10:13 am

The best way is to use the bike's own hydraulic pressure to push it out. Unfortunately, if you've already removed one of them, it means you're going to have to reinsert it and bleed the brakes in order to do it this way.

Look at How to rebuild your rear brake caliper, starting at step 8, and you'll see how I get them out. If you don't have a piece of steel stock around, an old brake pad will work as well.

robertdawber
Posts: 285
Joined: Fri Aug 07, 2009 9:24 pm
Location: Eliot, ME
Motorcycle: 1983 GL1100 Interstate

Re: Caliper Piston stuck

Postby robertdawber » Sun May 30, 2010 12:58 pm

WingAdmin wrote:The best way is to use the bike's own hydraulic pressure to push it out. Unfortunately, if you've already removed one of them, it means you're going to have to reinsert it and bleed the brakes in order to do it this way.

Look at How to rebuild your rear brake caliper, starting at step 8, and you'll see how I get them out. If you don't have a piece of steel stock around, an old brake pad will work as well.

Thanks Scott-
I have tried all of those-I think it might be hopeless.
I have a spare for the front-but it will not have the fender application-otherwise, any reason it would not work? I could not even find a used one on ebay.
Bob

User avatar
WingAdmin
Site Admin
Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Caliper Piston stuck

Postby WingAdmin » Sun May 30, 2010 3:31 pm

You can try this: Reinsert the original piston, remove the banjo bolt and brake line, and replace the banjo bolt with a normal bolt of the same size and thread pitch (to basically seal that hole up). Then affix a grease gun to the bleeder valve and pump grease into the caliper. Grease guns can generate enormous amounts of pressure, and could push that piston out.

User avatar
Right Winger
Posts: 278
Joined: Sun Nov 15, 2009 6:46 pm
Location: Pittsburgh
Motorcycle: 85 ltd
84aspy

Re: Caliper Piston stuck

Postby Right Winger » Sun May 30, 2010 8:04 pm

:) Geeze I just rebuilt the caliper on mine ! But I didn't have that problem. What I would do is mentioned above. Put the piston back in connect the caliper back to the hose block the free piston and pump the pedal. Even if you have to bleed the rear brake. That should work . Thats what I had to do to get mine out :) Well good luck ;)

heymandavid14
Posts: 22
Joined: Sun Apr 11, 2010 11:57 am
Location: Whitehouse Oh
Motorcycle: 1983 gl1100a aspencade

Re: Caliper Piston stuck

Postby heymandavid14 » Mon May 31, 2010 4:02 pm

The problem you may have run into now is when you used the PB Blaster, It has chemicals in it that will cause the seals to swell freezing the piston up even more

robertdawber
Posts: 285
Joined: Fri Aug 07, 2009 9:24 pm
Location: Eliot, ME
Motorcycle: 1983 GL1100 Interstate

Re: Caliper Piston stuck

Postby robertdawber » Mon May 31, 2010 7:32 pm

heymandavid14 wrote:The problem you may have run into now is when you used the PB Blaster, It has chemicals in it that will cause the seals to swell freezing the piston up even more

The force with air should push them out though.

Any thoughts on using the extra front caliper?

User avatar
Right Winger
Posts: 278
Joined: Sun Nov 15, 2009 6:46 pm
Location: Pittsburgh
Motorcycle: 85 ltd
84aspy

Re: Caliper Piston stuck

Postby Right Winger » Mon May 31, 2010 8:01 pm

I don't know about an interchange of a front for rear on a 1100. I have heard that it will on a 1200 but don't know for a fact that it will. I would say that if hydrolic pressure don't move the pistons out then it has had it . I'd be looking for another caliper. This isn't much help but it is worth a shot if nothing else pans out :(

http://cgi.ebay.com/ebaymotors/Honda-GL ... 19bc99d875

robertdawber
Posts: 285
Joined: Fri Aug 07, 2009 9:24 pm
Location: Eliot, ME
Motorcycle: 1983 GL1100 Interstate

Re: Caliper Piston stuck

Postby robertdawber » Mon May 31, 2010 8:46 pm

AWLKRSN wrote:I don't know about an interchange of a front for rear on a 1100. I have heard that it will on a 1200 but don't know for a fact that it will. I would say that if hydrolic pressure don't move the pistons out then it has had it . I'd be looking for another caliper. This isn't much help but it is worth a shot if nothing else pans out :(

http://cgi.ebay.com/ebaymotors/Honda-GL ... 19bc99d875

Thanks
That looks much different than mine though.
I sure appreciate the thought.
Bob

User avatar
Right Winger
Posts: 278
Joined: Sun Nov 15, 2009 6:46 pm
Location: Pittsburgh
Motorcycle: 85 ltd
84aspy

Re: Caliper Piston stuck

Postby Right Winger » Mon May 31, 2010 8:49 pm

You are quite welcome I don't think that guy knows what he has. But keep checking you never know .

User avatar
jericho71
Posts: 3
Joined: Wed Jun 22, 2011 6:30 pm
Location: Riverbank,CA
Motorcycle: 1982 GL1100

Re: Caliper Piston stuck

Postby jericho71 » Tue Jan 10, 2012 9:03 pm

WingAdmin great call on the grease gun solution. I was able to get the pistons un stuck with this trick. I was worried I was going to have to scrounge for a bolt to replace the banjo bolt but ended up using the one had. I doubled up the copper rings and this created a nice seal.

User avatar
WingAdmin
Site Admin
Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Caliper Piston stuck

Postby WingAdmin » Tue Jan 10, 2012 9:45 pm

jericho71 wrote:WingAdmin great call on the grease gun solution. I was able to get the pistons un stuck with this trick. I was worried I was going to have to scrounge for a bolt to replace the banjo bolt but ended up using the one had. I doubled up the copper rings and this created a nice seal.


Great! Make sure you take some brake cleaner and hose all that grease out of there thoroughly before you put things back together, though.

User avatar
RBGERSON
Posts: 2612
Joined: Tue Mar 09, 2010 7:57 am
Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: Caliper Piston stuck

Postby RBGERSON » Wed Jan 11, 2012 7:19 am

Hey mentioned a grease gun way up at the top... :lol:
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

User avatar
rick457
Posts: 49
Joined: Tue Jan 17, 2012 11:44 am
Location: Pensacola, Florida
Motorcycle: 1989 GL1500k Goldwing
Contact:

Re: Caliper Piston stuck

Postby rick457 » Tue Jan 17, 2012 11:56 am

what has happened is moister has caused a corrosion buildup under the piston seal. This will bulge the seal and **** the piston in an angle. I suggest you reinstall the seals and piston in the good bore, clamp it down so it can't move and use the brake master cylinder to force the stuck piston out. Do this very slowly. Good luck!!

User avatar
Nickel1
Posts: 23
Joined: Tue Nov 26, 2013 2:20 pm
Location: Orlando
Motorcycle: 1978 GL1000

Re: Caliper Piston stuck

Postby Nickel1 » Tue Nov 26, 2013 2:32 pm

I have been reading information off of this site for months, I just wanted to thank you guys for this Brake Caliper Piston fix using the grease gun, it saved me tons of time and $. This is the way sites should be, helpful, and not full of egomaniacs that are just here to make the rest of us feel stupid.
Thanks again!


1978 GL1000
"Bulldog Café"
1978
Bulldog Café

User avatar
Sagebrush
Posts: 96
Joined: Tue Mar 09, 2010 5:47 pm
Location: Raleigh, NC
Motorcycle: 1981 GL1100
1982 GL1100
2001 GL1800 CSC Trike
2002 GL1800

Re: Caliper Piston stuck

Postby Sagebrush » Tue Nov 26, 2013 6:46 pm

WingAdmin wrote:You can try this: Reinsert the original piston, remove the banjo bolt and brake line, and replace the banjo bolt with a normal bolt of the same size and thread pitch (to basically seal that hole up). Then affix a grease gun to the bleeder valve and pump grease into the caliper. Grease guns can generate enormous amounts of pressure, and could push that piston out.



I've used this method several times on stubborn pistons, it works so well you'll wonder how it was stuck.




Return to “GL1100 Information & Questions”




Who is online

Users browsing this forum: No registered users and 4 guests