3000s bleeding brakes help
Discussion
i have just changed the brakepads on the wilwood calipers on my 3000s.
I cleaned the exposed part of the 4 pistons before pushing back into the calipers to make room for the new thicker pads.
Now the front brakes don't work, only the back brakes.
The car has a dual braking system so i think there is a valve that now is shutting off the supply to the front brakes.
Please can someone tell me how to recentralise the valve.
Thanks for your help
alan
I cleaned the exposed part of the 4 pistons before pushing back into the calipers to make room for the new thicker pads.
Now the front brakes don't work, only the back brakes.
The car has a dual braking system so i think there is a valve that now is shutting off the supply to the front brakes.
Please can someone tell me how to recentralise the valve.
Thanks for your help
alan
you just pushed them way back in? thats all you did?
then its very strange, when you say that only the rear brakes work, that means you have pressure on the pedal, does it feel normal?
did you also start the engine and try a bit harder on the pedal? or does such car do not come with brake booster (or how you name such)
then its very strange, when you say that only the rear brakes work, that means you have pressure on the pedal, does it feel normal?
did you also start the engine and try a bit harder on the pedal? or does such car do not come with brake booster (or how you name such)
i have pressure on the pedal very low and it operates rear brakes only.
i have a brake servo.
It's my first car with a dual circuit master cylinder with problems.
I am sure it can only be one of the pistons blocked.
I will when i strip down master cylinder and i will report what i find
Alan
i have a brake servo.
It's my first car with a dual circuit master cylinder with problems.
I am sure it can only be one of the pistons blocked.
I will when i strip down master cylinder and i will report what i find
Alan
Sometimes referred to as a Pressure Differential Warning Actuator of PDWA. It's avery nasty piece of Austin Allegro technology meant to detect a difference in brake pedal pressure between the front and rear brakes. if you have a TR6 brake master cylinder then you will have a PDWA, if you have a Ford Cortina master cylinder you wont have one.
They are usually seized up and don't work but if you have one there is a special procedure to bleed the brakes to prevent it closing off the front or back brakes when you open a bleed nipple and put your foot on the pedal..
They are usually seized up and don't work but if you have one there is a special procedure to bleed the brakes to prevent it closing off the front or back brakes when you open a bleed nipple and put your foot on the pedal..
When you were working on the brakes, you have pressed the brake pedal with no closed circuit on the front brakes.
So the valve in the 5 way system did his work and moved to the front and blocked 1/2 of the system.
So only brakes at the rear.
Just move the valve to the middle and fixed.
Good luck.
Hans
Steve,
if my car has a PDWA where would it be fitted and what does it look like. I imagine if the car has one it has an electrical spade on it to supply warning light.
The master cylinder is dual circuit and is Girling.
One outlet in the middle i think for rear brakes and two outlets at front for front brakes.
I have Silicon brake fluid and when i action the master cylinder to pump fluid to bled it returns very very slowy. Maybe the Silicon has made the seals swell up and they are now too tight
Alan
if my car has a PDWA where would it be fitted and what does it look like. I imagine if the car has one it has an electrical spade on it to supply warning light.
The master cylinder is dual circuit and is Girling.
One outlet in the middle i think for rear brakes and two outlets at front for front brakes.
I have Silicon brake fluid and when i action the master cylinder to pump fluid to bled it returns very very slowy. Maybe the Silicon has made the seals swell up and they are now too tight
Alan
If you have 3 pipes coming out of your brake master you won't have a PWDA. Just for reference for others in future on 1600cc cars it's bolted onto the chassis above the bellhousing. On 2500cc cars it's usually bolted to chassis in front of engine and behind steering rack low down. It has 5 brake pipes going to it and an electrical connector.
Willwood calipers have 2 bleed nipples each, it's easy to overlook one of them. The best way to bleed Wilwwod calipers, in fact most calipers is to use an "Easybleed" kit with very little tyre pressure. Just remember to start furthes away and work back towards master cylinder.
Willwood calipers have 2 bleed nipples each, it's easy to overlook one of them. The best way to bleed Wilwwod calipers, in fact most calipers is to use an "Easybleed" kit with very little tyre pressure. Just remember to start furthes away and work back towards master cylinder.
http://www.wilwood.com/M/techtip/TechFaqAnswer.asp...
Some Wilwood callipers are pretty bad to bleed..I do not know which type you have but some can be awkward with multiple bleed screws and the facility to readily trap air between the calliper sides…I haven't heard much positive feedback on wilwood callipers generally but I have no experience of them so may be being unfair with that comment.
N.
Some Wilwood callipers are pretty bad to bleed..I do not know which type you have but some can be awkward with multiple bleed screws and the facility to readily trap air between the calliper sides…I haven't heard much positive feedback on wilwood callipers generally but I have no experience of them so may be being unfair with that comment.
N.
Alan,
The 3 pipe MC is a Ford Cortina MkV item, similar to the early wedges (i've got an adress for a supplier, in Devon iirc)
Don't go the seal set overhaul route, its sh*te !
But I also think its a bleed problem, there is a certain sequence to be followed for Willwoods
(serves you right for going NOE
)
Frank
The 3 pipe MC is a Ford Cortina MkV item, similar to the early wedges (i've got an adress for a supplier, in Devon iirc)
Don't go the seal set overhaul route, its sh*te !
But I also think its a bleed problem, there is a certain sequence to be followed for Willwoods
(serves you right for going NOE
)Frank
bluezeeland said:
Alan,
The 3 pipe MC is a Ford Cortina MkV item, similar to the early wedges (i've got an adress for a supplier, in Devon iirc)
Don't go the seal set overhaul route, its sh*te !
But I also think its a bleed problem, there is a certain sequence to be followed for Willwoods
(serves you right for going NOE )
Frank
Does your supplier also supply it with the fluid reservoir?The 3 pipe MC is a Ford Cortina MkV item, similar to the early wedges (i've got an adress for a supplier, in Devon iirc)
Don't go the seal set overhaul route, its sh*te !
But I also think its a bleed problem, there is a certain sequence to be followed for Willwoods
(serves you right for going NOE
)Frank
N
bluezeeland said:
No, he doesn't (or didn't two years back....) you'll have to knit one yourselve, Neil....
I think i can knit stainless steel to hide crap hoses but knit a reservoir
hi Frank,
thanks for info on master cylinder.
you are all right about the bleeding. I took the master cylinder from my 1600m to be sure in my mind that the problem was bleeding.
So tomorrow i will take my 3000s for a drive to see if the brakes still squeel
Alan
plasticpig72 said:
bluezeeland said:
No, he doesn't (or didn't two years back....) you'll have to knit one yourselve, Neil....
I think i can knit stainless steel to hide crap hoses but knit a reservoirhi Frank,
thanks for info on master cylinder.
you are all right about the bleeding. I took the master cylinder from my 1600m to be sure in my mind that the problem was bleeding.
So tomorrow i will take my 3000s for a drive to see if the brakes still squeel
Alan
Bleeding brakes isn't the most glorious of jobs, but those Willwoods are a pita (haven't got em, but a mate has)
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