Ciao a tutti, avrei bisogno di chiedere aiuto ho dovuto smontare le pinze posteriori della mia Golf perchè faticavano a tornare indietro, ovviamente l'auto a 235.000km e l'olio non era mai stato sostituito era verde scuro mal andato. Cosi ho aperto anche gli spurghi anteriore e dato qualche pedalata per far uscire tutto l'olio vecchio, monto le pinze posteriori chiudo tutti gli spurghi e inizio a caricare l'olio nuovo, procedendo con lo spurgo manuale classico, il problema che probabilmente non riesco ad eliminare una bolla d'aria, il pedale tende ad andare un pelo più giù per tornare a far la corsa normale alla seconda pompata, ora ho notato su vari siti stranieri che ci sarebbe una procedura da eseguire con il VCDS o vag com il problema e che e un pò incasinata, non capisco se si possa fare da soli o necessita sempre una persona e il modo di esecuzione. Posto il primo esempio ma e in inglese. Sono abbastanza confuso sulla procedura se qualcuno la già eseguita e mi può aiutare gliene sarei molto grato.
Tools & stuff you need
brake fluid (3L)
2 x 11mm spanners
2 x bleed tubes with one way valves on
2 x receptacle at least 1L in capacity
first you need access to the front bleed nipples, i jacked up the front,
placed on axle stands and removed both wheels.
then put the spanner, bleed tube and receptacle on each side.
open the brake fluid resevoir and have your fluid ready to keep the
resevoir topped up at all times. i got a friend to do this to speed things up,
it's probably possible on your own but will take a while longer.
goto ABS, basic settings blah blah whatever it is and click from 000
up to 001 and then you get a MSG on the screen saying "PRESS AND
HOLD PEDAL" or words to that effect. whilst doing this the ABS pump is
activated and the pedal can be felt kicking back
(002) it stops pumping and your told to
relase the pedal and open the front 2 bleed nipples, then you need to click
to continue
(003) it will tell you to wait for 10
secs whilst the ABS pump is activated and fluid is pumped out of the now open
bleed nipples
(004) it tells you to pump the pedal 10
times and then close the bleed nipples, then you need to click to continue
(005) "PRESS AND HOLD BRAKE
PEDAL" untill told to stop
(006) it stops pumping and your told to
relase the pedal and open the front 2 bleed nipples, then you need to click
to continue
(007) it will tell you to wait for 10
secs whilst the ABS pump is activated and fluid is pumped out of the now open
bleed nipples
(008) it tells you to pump the pedal 10
times and then close the bleed nipples, then you need to click to continue
(009) "PRESS AND HOLD BRAKE
PEDAL" untill told to stop
(010) it stops pumping and your told to
relase the pedal and open the front 2 bleed nipples, then you need to click
to continue
(011) it will tell you to wait for 10
secs whilst the ABS pump is activated and fluid is pumped out of the now open
bleed nipples
(012) it tells you to pump the pedal 10
times and then close the bleed nipples, then you need to click to continue
(013) "PRESS AND HOLD BRAKE
PEDAL" untill told to stop
(014) it stops pumping and your told to
relase the pedal and open the front 2 bleed nipples, then you need to click
to continue
(015) it will tell you to wait for 10
secs whilst the ABS pump is activated and fluid is pumped out of the now open
bleed nipples
(016) it tells you to pump the pedal 10
times and then close the bleed nipples, then you need to click to continue
(017) ABS BLEED PROCESS COMPLETE!
once your done approx one litre of fluid will have been expelled from
each caliper
points to note, i did not go full travel on the pedal every time, i
probably only used about 75% of the pedal travel and i pumped the pedal slowly
to prevent damaging the master cylinder seal which everyone is always banging
on about.
so from the above you can see it's 4 complete cycles, not 17 cycles as
someone suggested but 17 is the number you'll see on the left at the end when
it says it's completed
Il secondo esempio
In VAG-COM:
[Select]
[03 - ABS Brakes]
[Basic Settings - 04]
Group 001
[Go!]
Once you hit GO! the screen says to depress pedal and hold
You have to press the pedal HARD. Seriously, pound the pedal like you're about to drive over a cliff. Remember to hold the pedal down!
The pedal will drop, the pump runs briefly, then the pedal comes back up.
Take your foot off the pedal.
I think it wants you to click on OK at this point.
The screen says something like FR/FL bleed screw OPEN.
Open both front bleed screws. Obviously, on each bleed screw you'll have some tubing going from the bleeder into a catch jar.
Click on OK (or DONE or something like that).
Pump runs for 10 seconds, pushing fluid out of the bleeders into your catch jars.
Screen says something like: Depr. pedal 10X; bleed screw CLOSED
Depress pedal firmly 10 times, then close both bleed screws.
Click OK.
You'll get sent back to the depress pedal and hold screen and repeat the cycle. It goes on for like 10 or 15 cycles. I never got a finished message, I just did it until the screen said N/A.
It is easier with two people. One in the car pressing the pedal and working Vag-Com, the other outside opening and closing bleeders and making sure the master cylinder doesn't run dry (very important!).
If you're doing this solo, put the laptop on the driver's side roof so you can access it easier. It's also a great workout as you run in and out and around the car.
After the ABS pump is bled, you can then bleed the rest of the system as normal.
