Hopeless Calipers?


Information and questions on GL1100 Goldwings (1980-1983)
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norseman47
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Hopeless Calipers?

Post by norseman47 » Sat Mar 26, 2011 1:00 pm



Both of the front calipers on my GL100I has one seized piston each. I can't get them to pop at all. I've removed the calipers, soaked them in a parts cleaning tank, reinstalled them, but no good. The other pistons work okay. I can get the seized pistons to wiggle & turn, but not to moving out. I'm starting to look on ebay for replacements; in desperation...



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norseman47
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Re: Hopeless Calipers?

Post by norseman47 » Sat Mar 26, 2011 3:15 pm

I got them out! I read all the fine print forum entries & found the one by robertdawber who mentioned using a grease gun. I quickly got my grease gun, & hot-dang, they came out in minutes.

Thanks robertdawber!

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littlebeaver
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Re: Hopeless Calipers?

Post by littlebeaver » Sat Mar 26, 2011 3:46 pm

What's he tell you to do fill the cavity with grease to push them out?

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WingAdmin
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Re: Hopeless Calipers?

Post by WingAdmin » Sat Mar 26, 2011 8:22 pm

littlebeaver wrote:What's he tell you to do fill the cavity with grease to push them out?
You click the grease gun onto the bleeder valve, open it a bit to let the grease in, and then start pumping.

Then clean all the grease out very, very well afterward!

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littlebeaver
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Re: Hopeless Calipers?

Post by littlebeaver » Sat Mar 26, 2011 8:38 pm

Wow, how cool is that, what a smart way of doing it, I wonder if air pressure will also work, just put a clear hose on one of those bleeder air thingy nipple looking things and blow it out.. Has anyone tried that, I don't know but I bet it would work..But that grease gun is smart and safe too..And you get to make mud patties..Ha ha.. :lol: :shock: My way probably won't work and I'll get hit in the head or something like that.. :lol:

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WingAdmin
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1982 GL1100A Aspencade (sold)
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1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Hopeless Calipers?

Post by WingAdmin » Sun Mar 27, 2011 8:26 pm

littlebeaver wrote:Wow, how cool is that, what a smart way of doing it, I wonder if air pressure will also work, just put a clear hose on one of those bleeder air thingy nipple looking things and blow it out.. Has anyone tried that, I don't know but I bet it would work..But that grease gun is smart and safe too..And you get to make mud patties..Ha ha.. :lol: :shock: My way probably won't work and I'll get hit in the head or something like that.. :lol:
You can use air pressure - I've done this before, when the piston was ALMOST all the way out and jammed. However whereas an air compressor can generate perhaps 120 PSI of pressure at most, a grease gun can generate upwards of 5,000 PSI - much better at getting reluctant pistons to move.

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virgilmobile
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Re: Hopeless Calipers?

Post by virgilmobile » Mon Mar 28, 2011 8:28 pm

There 2 things to pay very close attention to.First,clean the seal groove and the piston must slide easly to the bottom of the casting without the seal.



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