Member Since: 31 May 2017
Location: Isle of Sheppey
Posts: 1510
Brembo bleeding
Fitted my new discs and Brembo 4 pot calipers at the weekend along with new front flexi hoses. Pedal now pushes along way down and then if you push it again seems a bit firmer.
Is there any particular way to bleed them? I did outside then inside nipples.
The car does stop but would have expected a slightly firmer pedal. Also fitted new rear pads.2006 TdV6 HSE.
2nd Oct 2018 3:28 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
Second push being firmer says you have something thats moving back again ie adjustment, which callipers dont have so somehting is not sitting correctly, I would start with the rear callipers, did the pistons push back in smoothly? were the sliders lovely and free?
What I have seen happen is you push the pedal and the piston extends, then when you release it the pisotn retracts a lot due to a dry rubber seal acting like a spring, this makes the pad to disc gap to large which takes a second press to close up.
2nd Oct 2018 3:32 pm
Batfink
Member Since: 31 May 2017
Location: Isle of Sheppey
Posts: 1510
Calipers all retracted fine and sliders were all free and bouncy. The only thing I did do was pump the fronts to close the gap between pads and discs after bleeding. Didn't bleed the rears as didnt touch fluid side of them.2006 TdV6 HSE.
2nd Oct 2018 3:37 pm
astonbuilder
Member Since: 29 Sep 2006
Location: MIDLANDS
Posts: 8051
I'd have thought you'd have to bleed the whole system given 'major surgery' of completely changing teh calipers.
Back in the day of home maintenance for me this would mean starting at the furthest most point, i.e. rears, caliper furthest from the master cylinder, then the other rear one, then moving to the front, again starting with the corner furthest from master cylinder until the final corner closest to it and job done
Pressing the pedal and travel long/soft and then repeating and it is harder is a clear indicator of air in the system to me
2nd Oct 2018 4:11 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13598
Re: Brembo bleeding
Batfink wrote:
Fitted my new discs and Brembo 4 pot calipers at the weekend along with new front flexi hoses. Pedal now pushes along way down and then if you push it again seems a bit firmer.
Is there any particular way to bleed them? I did outside then inside nipples.
The car does stop but would have expected a slightly firmer pedal. Also fitted new rear pads.
Hi
Did u allow the master cyl to empty , if u did it’s possible that air has entered the abs unit, the iid is req to open the abs unit to bleed it out
Also the Bleed procedure is, back left, back right , front left front right
Member Since: 31 May 2017
Location: Isle of Sheppey
Posts: 1510
Master cylinder didnt run even close to dry as topped up after each of the 4 nipples. Have just found a very slow weep on the n/s outside bleed nipple. So will order some new nipples and re bleed. Wont be using the car until the weekend.2006 TdV6 HSE.
2nd Oct 2018 4:44 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13598
Great u found the issue
Hope it sorts it out
2nd Oct 2018 4:46 pm
Batfink
Member Since: 31 May 2017
Location: Isle of Sheppey
Posts: 1510
One thing I have just noticed is if you pump the pedal with the car running it pressures then drops but if engine off pumps and stays hard. Cant remember if thats normal or not. Car has had brake mod done as got the two pipes next to the box 2006 TdV6 HSE.
2nd Oct 2018 4:57 pm
L319
Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2080
If with engine off the pedal becomes sold feeling when pumped, then there is no air in the system. I have found the D3 pedal on mine feels softish when running, but always works.
2nd Oct 2018 6:20 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
I changed front callipers on mine over 3 yrs ago and never bled the rears and its been fine ever since
2nd Oct 2018 8:33 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10360
still got your origional diesel servo ?
That could be an issue, if the leak don't sort it
EDITED TO MAKE SENSE
Last edited by Pete K on 2nd Oct 2018 10:09 pm. Edited 1 time in total
2nd Oct 2018 8:35 pm
Batfink
Member Since: 31 May 2017
Location: Isle of Sheppey
Posts: 1510
Brakes were fine before I changed all these bits so is something I have done. Hoping the new non leaking bleed nipplies and a rebleed will cure this.2006 TdV6 HSE.
2nd Oct 2018 9:14 pm
Batfink
Member Since: 31 May 2017
Location: Isle of Sheppey
Posts: 1510
New nipples fitted and fronts bled again. Still quite a lot of pedal travel but have to remember I have new front discs and pads and new rear pads so not expecting phenomenal brakes from the word go. Will let them bed in and hopefully should be all good now leak free 2006 TdV6 HSE.
6th Oct 2018 11:41 am
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
I changed my front pads yesterday and they were a bit spongy to start, but thats new pad son worn/lipped discs so to be expected, done 30 miles today and they are geting better all the time, so by weeks end service should be as normal.
6th Oct 2018 12:01 pm
Batfink
Member Since: 31 May 2017
Location: Isle of Sheppey
Posts: 1510
Pedal still has a fair bit of travel. If I push then let go then push again when braking it gets a bit firmer and does stop the car.
One thing I am wondering about is that I didn't release the bleed nipples on the rear calipers when I wound the pistons back to fit new rear pads.
Could it be as simple as I need to bleed all four wheels instead of just the fronts?2006 TdV6 HSE.
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