For the brake genius out there.

[Cuppa]

G`day All
Cuppa to answer your question, it`s exactly what we want, that is for the cups to move out then when they return the agitation of the fluid drags the little air that is left in the cyl, out.

That makes sense, allowing max movement of the cups. I can imagine in that scenario the 'timing' of opening the bleed nipple might be super critical, more so than in 'normal' bleeding procedure.

[threedogs]

When we bled the brakes after fitting new rotors and pad, the boys at TJM Coburg have a 4 into one system..
As in hooked up all four bleed nipple, took a couple of them to do it, as well. But the gravity system works best if you have the time

[macca]

Here's some more information.

Left photo, car is tilted 55degrees to get port to the very top.

Right photo, what Pearcy is talking about. Wrap the pistons with tie wire to bleed and carefully install then push the into correct position using brake pedal.

I like that best, not perfect but better. Add rubber grease and all air would be displaced.

Food for thought.

Now I have to knock dent out of the shed wall where I was hitting my head!

[nissannewby]

When we bled the brakes after fitting new rotors and pad, the boys at TJM Coburg have a 4 into one system..
As in hooked up all four bleed nipple, took a couple of them to do it, as well. But the gravity system works best if you have the time

Yours as you have just said is disc all round and does not have the problem these guys are having with their drums.

[macca]

Caught up with a mate last night, he is a mechanic at the local Nissan dealership.
They don't get to work on Patrols any more as most are a few years old and never get taken in for warrantee and services etc.
Showed him the slave cylinder and was amazed by the design, he did not know of the problem and had not heard anyone talk about it.
He was going to ask around and get back to me.
His dad is also a mechanic, although this was new to him, he said with something like this you compress the pistons together as Pearcy said then pump the pedal and hold it down hard to pressurise the system, release the bleeder and the force of fluid rushing in swirls the fluid and air out get "most" of the air. He had not done it but that was his solution.
Bugger of a thing

[Cuppa]

he did not know of the problem and had not heard anyone talk about it.

This is what really astonishes me. Will be interesting if he hears any more. It's hard to believe that the issue has gone unnoticed by Nissan. Would also be interesting to know if it's only a leafy GU issue, or other leafy models too.
Are there any ex Telstra mechanics here?

[timmay556]

Cant park the girl sideon on a hill? then do the final bleed?

[macca]

Cant park the girl sideon on a hill? then do the final bleed?

At 55 degrees, you are braver than me LOL
http://www.nissanpatrol.com.au/forum...7&d=1404797356

[jack]

At 55 degrees, you are braver than me LOL

Chicken

[macca]

Chicken

book, book book book hell yeah