pb blaster saves me 80 bucks!

[Jimmyowensfan20]

let my stuck cylinder in my brake caliper set over night in pb blaster and it works like new. all the nasty rust is gone! woo hoo!

[porcupine73]

Awesome! I'm going to have to try it. Normally I use kroil.

[WoodsWagon]

Uh, clean the snots out of it with alcohol before you reuse the caliper. PB+ brakefluid = seals in rest of brake system swelling a leaking.

[porcupine73]

Oh good point. You don't want any contamination in the brake system.

[Jimmyowensfan20]

how can it get into brake system by applying to cylinder?

 

If i'm not mistaken...brake fluid doesn't circulate.

[porcupine73]

Oh sorry man, I though you removed the brake hose banjo and shot it in there. At least that's what I did with kroil. Fortunately I had a caliper reseal kit onhand. The brake fluid does to a degree circulate. There's fluid going into the caliper when applying the brake. And fluid leaving the caliper when the pads get knocked back by the rotor.

[Jimmyowensfan20]

I shot it on the piston and pushed it back with a c clamp and hit the breaks and sprayed it and pushed it back with a c clamp and hit the breaks and sprayed it and pushed it back with a c clamp and let it sit all night.

[porcupine73]

Oh ok, well that's cool that it helped. You should be fine in this case. Behind that rubber flex boot thingy is the piston, and inside that about 1/3" inch is the piston seal. Unlikely any pb blaster got into the brake fluid.

 

On my '94 I had a sticky caliper. I pounded the piston out with a punch through the caliper bolt hole. It was all corroded and stuff well into the piston beyond the seal. I cleaned it up with extra fine emery cloth, cleaned with brake clean, poured fresh brake fluid over it, and reassembled with the reseal kit.

[jib]

Awesome! I'm going to have to try it. Normally I use kroil.

 

Kroil will dissolve rust and penetrate exceptionally well also.

 

Jack