Power Bleeding Brakes... How Much PSI??

**617 Bones** · 05-28-2008 07:36 PM

When I bleed my brakes with my Power Bleeder how many PSI do I pump it up to ??
Same for the Clutch as well?

TIA!

**Condo** · 05-28-2008 08:02 PM

Around 20 PSI if I remember correctly.

**MikTip** · 05-28-2008 09:49 PM

5 psi works just fine!

Doubt the plastic brake resivour tank can take 20 psi...

**Condo** · 05-28-2008 10:25 PM

The instructions said to keep the pressure at 20psi.

**rxrep** · 05-28-2008 10:43 PM

2 bars pressure for brakes. Remember it is a weird sequence listed also. It is closest to furthest in blead order on our cars. Left Fr, Right Fr, Left Rr, Right Rr.

For clutch, the pressure is a little higher, at 2.5 bar, and be sure to bleed out at least 100cm3 of fluid from the slave cylinder nipple.

All from Bentley.

**absolutegtr** · 05-28-2008 11:13 PM

I have succesfully bled the ENTIRE system (clutch too) at 15psi!

**aLeXliu911** · 05-29-2008 01:23 AM

Originally Posted by rxrep

2 bars pressure for brakes. Remember it is a weird sequence listed also. It is closest to furthest in blead order on our cars. Left Fr, Right Fr, Left Rr, Right Rr.

For clutch, the pressure is a little higher, at 2.5 bar, and be sure to bleed out at least 100cm3 of fluid from the slave cylinder nipple.

All from Bentley.

is it only our car to bleed from closest to furthest?
coz last time when i bleed my brakes, my friend who owns a bodyshop told me to bleed from furthest to closest.

**Duchenbagen** · 05-29-2008 01:28 AM

Originally Posted by aLeXliu911

coz last time when i bleed my brakes, my friend who owns a bodyshop told me to bleed from furthest to closest.

I have always done it furthest to closest as well.

**OettingerAvant** · 05-29-2008 01:48 AM

20 psi n the sequence list is RR, LR, RF, LF for b6

**MikTip** · 05-29-2008 03:41 AM

Who's done 20psi, and the plastic resivour tank survived?

**rxrep** · 05-29-2008 05:23 AM

Originally Posted by aLeXliu911

is it only our car to bleed from closest to furthest?
coz last time when i bleed my brakes, my friend who owns a bodyshop told me to bleed from furthest to closest.

Originally Posted by Duchenbagen

I have always done it furthest to closest as well.

Originally Posted by OettingerAvant

20 psi n the sequence list is RR, LR, RF, LF for b6

It's been gone over a million times on the forums, and Alex, a body shop guy isn't a brake guy. While most normal cars have sequence starting in rear, the Bentley calls for the OPPOSITE on the B6 model. They don't state why. Audi dealer has confirmed this on one of the other millions of posts.
I doubt it would matter much, but there has to be a reason the Bentley wrote it up that way.
So, verbatim from Bentley, it is LEFT FRONT, RIGHT FRONT, LEFT REAR, RIGHT REAR. Closest to furthest. The opposite of what we're taught for doing cars.
I'll stick to the normal pattern of furthest to closest for any other car, but I'll roll with what the Bentley and the dealer say for the B6.

Originally Posted by MikTip

Who's done 20psi, and the plastic resivour tank survived?

Heck yeah. It calls for 2.5 bar which is about 36psi for clutch. I bleed brake and clutch a ton; at least every spring and sometimes even more frequently after track running. Holds up fine to that kind of pressure.