How do you get Pistons Out for Front Brake Calipers Options

[kbrunk1]

Haynes and Climer books say you clamp one side (one piston) then use air to push out the other side.

I have a small compressor. I am assuming you closed both bleed valves and then apply air to where the hydrolic line comes in.

When I do this I can not get the piston to come out.
Do you have to get a threaded fitting and then apply air pressure?
I was just pressing a "riggged tape tip nozzle" and most likely am not getting sufficient air pressure.

Right side caplider brakes seems to be fine (move in and out easily when clamped) and I was just going to put a kit in because it is so old. The Haynes book says to not split the caliper unless you have to.

The other front caliper seems to have a stuck piston because when clamping it it will not move. I am soaking in brake fluid and will see.....

Any help here?

[Brian_Boss]

If you use the search feature, Eric Shea has posted a lot of good info on this.

The threads on the caliper fluid inlet are close enough to 1/8NPT and that is what most air blow guns have on the tip. Remove the tip, insert pipe nipple, thread into caliper for air tight connection.

[Bartlett 914]

If you use the search feature, Eric Shea has posted a lot of good info on this.

The threads on the caliper fluid inlet are close enough to 1/8NPT and that is what most air blow guns have on the tip. Remove the tip, insert pipe nipple, thread into caliper for air tight connection.

Worse comes to worse, use a grease gun. Fill the caliper with oil. any oil will do. Install a grease fitting and use some old cheap grease in a grease gun. Pump this and it will come out. I did not use a grease fitting. I screwed directly the grease gun in the caliper so if the fitting doesn't work, try that.

[kbrunk1]

If you use the search feature, Eric Shea has posted a lot of good info on this.

The threads on the caliper fluid inlet are close enough to 1/8NPT and that is what most air blow guns have on the tip. Remove the tip, insert pipe nipple, thread into caliper for air tight connection.

Worse comes to worse, use a grease gun. Fill the caliper with oil. any oil will do. Install a grease fitting and use some old cheap grease in a grease gun. Pump this and it will come out. I did not use a grease fitting. I screwed directly the grease gun in the caliper so if the fitting doesn't work, try that.

If it turns out to be corroded then do you have to split the capliper and then use a small drill honing device?

I am curious how the fluid gets to the other side when you split a caliper? When the caliper is put back together is simply a compression fitting or is there a seal of sorts?

[jcb29]

I am curious how the fluid gets to the other side when you split a caliper? When the caliper is put back together is simply a compression fitting or is there a seal of sorts?

There is a small hole drilled thru the spacer block with small rubber washers on either side.