bleedin' brakes

[rcm]

Old topic for you guys but, I just rebuilt all the calipers, new master, and rubber lines. I even replaced the pistons. Backs came into it but, the fronts seem to just blow air and empty the reservoir. Any suggestions or ideas? By the way this is easiy the best forum for 911's.
thanks,
Rick

[diy83sc]

I say keep bleeding. The fluid is pushing the air out of the lines, so eventually you will see fluid coming out the bleed screws. Are you pedal pushing the fluid through? If you don't have a pressure bleeder, you can take the hose off the top of your reservoir and attach an empty garden sprayer to it. Fill the reservoir (not the pump sprayer tank!), then pump the sprayer up to get about 10 psi or so into it, then go bleed one of the calipers. This definitely helps move the fluid through a little quicker. Don't let the reservoir dry up. Release the pressure from the pump sprayer, then refill the reservoir.

This might help as well. Make sure that when you seat the pads, that they are snug between the pistons. Take the pads out, lightly press in you pedal to push out the pistons, then with the cap off the reservoir, use a small piece of wood or some dull object and push in the pistons until the pad barely slides in. Recap the reservoir, then go ahead and bleed your brakes. If I find the thread on this later tonight, I will repost it. I forgot who wrote this up originally, but it works like a charm!

Good luck.

Here you go!

I've had it with these brakes

Tony

[marcesq]

Use old pads or a thin piece of wood when reseating pistons, many a veterans have pushed the pistons slap up against the rotor.

My 2 cents.

[RANDY P]

Assuming you have the luxury of waiting or a good auto parts store somewhere - spend the $50 and buy the motive power bleeder. buy it and never hassle with air in the lines again. Pelican sells it if you need a good deal.

I just did my benz with new calipers and lines last weekend - and I'm terrified of bleeding brakes. Makes bleeding about as hard as putting air in your tires. Best $50 I've ever spent. Saves your M/C from getting trashed too. Just make sure the new pads are in and the calipers are complete before you pressurize the bleeder

[john70t]

And if you use the Motive (instead of gravity bleed, pumping, mitivac), make sure the overflow tube is crimped off or the inside of the trunk will get an unwanted wash.

[rcm]

Thanks for your all your help. I was using the mitivac and it does not get the complete seal. Anyway,a buddy stopped by, he pumped the pedal ( not all the waydown) and we had brakes in no time. I am going to purchase a power bleeder. Again, thanks for the help.

[caliber60]

And if you use the Motive (instead of gravity bleed, pumping, mitivac), make sure the overflow tube is crimped off or the inside of the trunk will get an unwanted wash.

Same thing happened to me. All the brake fluid flow out from the tube. Terrrrrrible instruction. The manufacturer emailed me stating the instruction is fine, I am not reading it correctly.