That's a good idea, I will try it.For that "stuck" brake caliper, you could try replacing the bleeder with a grease fitting and pumping it out with a grease gun.
That's a good idea, I will try it.For that "stuck" brake caliper, you could try replacing the bleeder with a grease fitting and pumping it out with a grease gun.
Wrap it up in some rags before you put the air to it.+1.Ive removed a piston with compressed air, and I can really recommend it unless you have an empty field you can point it towards. That piston missed every bike in my garage, but managed to hit about a dozen other things...never found it.
When I was a wee lad, our shop teacher showed us how to make an air cannon. He then demonstrated the correct method of wrapping the caliper in shop rags. In 50+ yrs I've never launched one.Hi Crabby,
don't use air, it ain't safe. when the piston flies out you have made an air cannon.
When I was a wee lad, our shop teacher showed us how to make an air cannon. He then demonstrated the correct method of wrapping the caliper in shop rags. In 50+ yrs I've never launched one.
Nope, if the air didn't move it, grease gun was step 2.Hi Jim,
did your Guru have a fix for when 120psi shop air pressure wouldn't shift it? Besides a 1,000+ psi grease gun, that is?
Hopefully the cylinder inside the caliper can be salvaged with a simple honing.
The ability to turn (and stop!) is important, so chose wisely!
Since the seal is inside the caliper and not on the piston, a little pitting in the cylinder won't hurt anything.... quiet a bit of pitting is acceptable actually. It's the piston that won't tolerate much pitting, as the seal slides against it. I'd stick with the housing you have... if it were me.
Dunno Fred... all 3 of mine had just the square one in the caliper and a dust seal and snap ring on the outside. None of 'em had a groove on the piston for a seal.Hi Jim,
thing is, there's two of them. Seals, that is.
The square O-ring on the piston and the seal ring in the cylinder.
Each one needs a reasonably good surface to run against.
OTOH, it's amazing how well a less than perfect surface will work.
Me, I'd use it too but I'd check it really well before I road tested it.