correct method to bleed brakes??

[nickW]

ive just replace the front metal brake pipes on my J reg Disco and after the bleeding they are still not working probably, am i doing it correctly

hand brake off

start with rear passenger

then rear drivers side

front passenger, starting by doing the inner most nipple first and at the same time

then front drivers

[nickW]

anybody???

[woody]

if you are struggling try bleeding through the pipe first is there plenty of pressure ???
if it is only a front pipe(s) you may only need to bleed the front brakes.
if you need to bleed all the brakes try bleeding the nearest to the master cyl first
also got some one to press the peddle for you and you may find it easier to use an easy bleed system apiece of tube into a bottle and then you can se if there is any air in the system

[nickW]

i always thought you were suposed to do the furthest away from the master cylinder first

[woody]

i always thought you were suposed to do the furthest away from the master cylinder first

if that doesnt work try it the other way round
i personally had to use mole grips on my flexi pipes when i bled my brakes on my s11 but i would never advise that on someone elses vehicle

another thought it could be your master cyl
i have had that after changing pipes n stuff

if i remember (not Land Rover) on duel brake systems for one vehicle you
bled off side rear, O/S front 2 nipples near side front bottom niples
near side rear n/s front 2 nipples o/s front bottom nipple
or was it the other way around

brakes can be complex

[Skywalker]

AFAIK the "accepted" method is do the furthest away from the master cylinder first; then again, I've done it in all sorts of order before and never found it made a lot of difference.

Few things I've learnt over the years which might be useful :roll:

1) Don't re-use brake fluid you've pumped through until it's stood for at least 24/48 hours, it will contain microscopic air bubbles and keep it in a sealed container as it is hygroscopic and will absorbe water from the atmosphere

2) Best way is if you can get 2 helpers, one to press the pedal and one to keep topping up the master cylinder ................ or 1 helper who can keep nipping out of the car to top it up  

2) If it's proving awkward to get a decent pedal, stick the bleed pipe in the jar of brake fluid, pump the brakes to get a bit of pressure in the system' hold it down' then release the bleed nipple, hold the pedal down and lightly nip up the bleed nipple before letting go the pedal.  Bit tedious but will help work the air through and should ensure your not sucking any air back in; do this several times on each wheel and see if there is any improvement.

3) Pump the pedal steadily, not "hell for leather"

4) If you can get a fairly decent pedal pressure, but pehaps "not quite as good as it could be", providing it's safe to drive (and stop), use the car for a day or two and then do the whole thing again.  

5) Brake bleeding can be a royal pain in the ar$e  :shock:

(I 'spose you know brake fluid is about the best "paint stripper" known to man ........ so keep it off the bodywork)

If you've already done all the above and there's no improvement, go have a cup of tea, go get another 5litres of brake fluid and keep at it

hth

Dave :roll: :roll:

[woody]

GOOD ADVICE FROM SKYWALKER

also i have been known to tie up load senser valves in the closed position

as this is another brake cyl

me thinks the cup of tea is the best idea

[nickW]

thanks, where are the load sensor valves

[woody]

thanks, where are the load sensor valves

IF you have one and i am not sure
it will look like a small rod pos on a ball joint from your rear axle to a valve block prob inside of your chassis

if you follow brake pipes back from rear axle past flexi pipes where they meet the chassis it should be around there if you have one
KICK MY SELF UP *RSE DONT THINK DISCO HAS LOAD VALVE ON

[Skywalker]

me thinks the cup of tea is the best idea

Me too ................ but now it's getting a bit later in the day a cold beer sounds even better  8)

Dave

[muddysteve]

get an eezi-bleed

piece of cake with one of them and only about £20


Steve

[nickW]

cheers people the brakes are done now

[woody]

cheers people the brakes are done now

sorry you dont gat away that easy
how did you do it in the end
was tea involved :lol:

[nickW]

i used the pumping the pedal method before opening each bleed nipple
i had to go round all 4 wheels twice

[woody]

i used the pumping the pedal method before opening each bleed nipple
i had to go round all 4 wheels twice

any particular order?????

[nickW]

starting with the furthest away first

[Skywalker]

Well done Nick, glad you got it sorted  

Woody .............   I'm sure tea was involved :D  ............   our recent Land Rover repair parties ......... have sort of evolved ..... :roll:   .....   into "Tea Drinking Competitions"    8)

Dave

[Wanderer]

the problems with a Disco are the two bleed nipples on the front calliper. I can't recall without looking at one but there is a correct way to do them.


Ed

[old joe]

i don't mess around with the brakes garage works better for me if they screw it up they have to replace it.

dazza

[nickW]

i cant afford to put my disco in the garage every time it goes wrong, ive spent £370 on parts for it this month i would be looking at the same again in labour if they were fitted by some one else

[BRO]

Goodridge braided hoses are a great improvement...

BUT better to do before you spend all the time getting the air out  :lol:


I've got some but haven't got round to fitting them yet. I asked the dealer to do them when they serviced the brakes - but they are not 'allowed' to as they are not Land Rover approved parts  :roll: - So they lost out on the brake service as well - cos I aint paying them to service the brakes and then doing all the work again myself  :shock:

The EBC sport discs and pads are nice - and (I think) an improvement...  :lol: