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View Full Version : Brake bleeding question.



JC Rover
25th May 2012, 04:23 PM
Today I took my front calipers off to replace the seals and pistons with stainless pistons. On putting it all back together I bled the front brakes only, assuming they are on a separate circuit to the rear brakes. The end result was a brake pedal that takes two pumps to get it firm. Should I bleed the whole system, starting with the rear passenger side?

ezyrama
25th May 2012, 06:53 PM
Start at the caliper furthest from the fluid tank and work your way back. It took me a couple of goes on a series 3 but it worked well.

centy
28th May 2012, 06:50 PM
i always started at the closest first. spongy brake lines can affect pedal feel to.

lambrover
28th May 2012, 07:48 PM
The front and rear circuits are separate, you must still have air in the system. Bleed furthest caliper first.

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JC Rover
29th May 2012, 07:59 AM
After seeing the inside of the caliper with the pistons out, and the fact they were totally emptied of brake fluid, I'm fairly sure air gets trapped in all the little nooks and crannies inside the caliper. Hence I bleed the brakes, drive for a couple of days, and bleed again. I'm working on the principal that by driving, the vibrations will dislodged the trapped air. I'm up to my third bleed, and they are getting better each time. If this doesn't work I'm seriously going to look at a new master cylinder. On a side note, I have extended Goodridge braided brake lines on the front and they have not survived too well. Only been in a year and the outer cover is ruptured and the stainless steel beneath is rusting (they aren't leaking though).

JC