Brake bleeding

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Pedro 70
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Re: Brake bleeding

Postby Pedro 70 » Fri Mar 23, 2018 10:22 am

Thank you very much Peter for taking the time to show the pipe set up. That is how mine are piped so I can tick that one off..Best wishes...Peter

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Peter-S
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Re: Brake bleeding

Postby Peter-S » Fri Mar 23, 2018 10:44 am

Pedro 70 wrote:Thank you very much Peter for taking the time to show the pipe set up. That is how mine are piped so I can tick that one off..Best wishes...Peter


No problem.
Bleed the lower nipple first if you aren't already.
Sometimes it can help to leave the brake pedal wedged down over night as that may force air through the system that will then come out on bleeding the next day.
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Re: Brake bleeding

Postby sheff » Sun Mar 25, 2018 9:37 am

Interested to hear how this is going, as my brakes have become soggy all of a sudden :(
The car hasn't been driven over the winter, took it out the other day for a little drive and noticed the brakes have become really spongy. It didn't seem to matter how much I pumped the pedal it stayed the same. And no loss of fluid as far as I can see.
I'm going to take a look at it in the next few weeks, so I'll post if I find anything.

Pedro 70
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Re: Brake bleeding

Postby Pedro 70 » Sun Mar 25, 2018 3:45 pm

Put my standard 2.8i caliper back on again yesterday, bled the system through and all is well. Good pedal straight away and brakes work fine again. So all is not right with my brand new Princess caliper. I did notice that with the caliper on the bench, only two pistons on each caliper appear to have moved out. Will investigate that this winter when I lay up the car. Going to enjoy a summer of driving it now. All the best to all for your inputs. Peter

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Re: Brake bleeding

Postby Peter-S » Sun Mar 25, 2018 5:29 pm

Pedro 70 wrote:Put my standard 2.8i caliper back on again yesterday, bled the system through and all is well. Good pedal straight away and brakes work fine again. So all is not right with my brand new Princess caliper. I did notice that with the caliper on the bench, only two pistons on each caliper appear to have moved out. Will investigate that this winter when I lay up the car. Going to enjoy a summer of driving it now. All the best to all for your inputs. Peter


I've had that with rebuilt Princess calipers, the new seals can be a bit tight it seems. If you have an air line or pump you can probably work them back and forth on the bench and free them up but at least you have a working set up in between time.
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Pedro 70
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Re: Brake bleeding

Postby Pedro 70 » Tue Mar 27, 2018 6:12 pm

Thanks Peter, good call, I’ll give that a go when I get some inspiration back. A bit p****d off with the Princess caliper at the moment. Peter.

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Re: Brake bleeding

Postby Fordoholic Nick » Sat Mar 31, 2018 11:42 pm

Pedro 70 wrote: A bit p****d off with the Princess caliper at the moment. Peter.


Maybe you should rename your thread from 'Brake Bleeding' to 'Bleedin Brakes !!' :lol: :sorry:
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Pedro 70
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Re: Brake bleeding

Postby Pedro 70 » Mon Apr 02, 2018 10:20 am

Too right!!!

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Re: Brake bleeding

Postby r2vdh » Tue Apr 03, 2018 12:11 pm

The simple method to bleed these brakes would be to remove and rotate the caliper around to get the air as close to the bleed nipples as you can.

some pistons are hollow on the inside and will trap air. doing this will free it and allow a better bleed. :beer:

Pedro 70
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Re: Brake bleeding

Postby Pedro 70 » Sun Apr 08, 2018 6:37 pm

Thanks, I will give that a go.

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Re: Brake bleeding

Postby nigecapri » Thu Apr 12, 2018 3:59 pm

As you have them on the bench it's worth a smeaar of rubber grease around the important bits. FROST is what I've been using & it will keep things lubed up round the main seal & help to keep water out of the dust seal.
Make sure you push the pistons fully back into the calliper before fitting, then open the nipples & wait for fluid to flow, then start the forced bleeding process.


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