Bleeding Brake System (abs Unit)

[CruiseLiner]

hey guys its usually a simple task i know but ive emptied my master cylinder completely and now i need to rebleed the whole system since installing the r34 brembos and new braided lines. this is a wgnc34 stagea im talking about.

now i have the r32 gtr workshop manual (i only got the jap stagea one so its no use to me) and it shows u need to bleed the abs unit itself, which has 2 nipples on the top of it, but the stagea one doesnt and only has 2 lines on top, so how do i bleed the abs?

obviously the rest is easy and start from the rear left wheel, rear right, front left and front right last.

any ideas on bleeding with the 4 spot brembos which have 2 nipples on each caliper? do i just do the left front wheel first and do the furthest nipple first, then the closer nipple and then the front right in the same order (starting from furthest to closest)???

any info appreciated

[ali-turko]

here the r32 gtr guide on bleeding brakes

[CruiseLiner]

thanks mate but i already have the 32 gtr manual and it doesnt tell u how to bleed the brembos and it says bleed from top of the abs unit nipples in which my stagea doesnt have any and has 2 lines on top of the abs instead that run to the master cylinder.

[ali-turko]

ohh i didn't read the bit bout brembo

[MANWHORE]

your question is very valid. I have stared at my r33 abs unit for hours trying to work out how to bleed it, because there is no obvious nipple like the r32 unit.

[Omurru]

From memory working on commodores you don't actually have too bleed the abs unit it's done automatically when you bleed all the calipers. You just have to remember when changing your pads not to just push the cyliners back in as it backfeeds the abs unit and f**ks it...Might be the same with the 33's if the units have no bleed nipple on them....

[Godzilla32]

No need to bleed the ABS unit just calipers, and long as you havn't removed or replaced the master you wont even have to bleed that. Its teh same as doing a brake fluid flush, you suck the reseviour dry and just refill it then flush the lines..no need the bleed the master.

If you do run into trouble however you can do a pressure bleed on the master by cracking the lines while you have a helper pump up and hold the pedal.

R33 ABS unit is probably bled with the consult/scan tool electronically

Deren

Edited January 6, 2007 by Godzilla32

[CruiseLiner]

thanks guys for the advice i bleed the calipers as normal and it seems to be fine now

[TokyoTaxi]

You just have to remember when changing your pads not to just push the cyliners back in as it backfeeds the abs unit and f**ks it....

So what's the trick to get the pistons back into the calipers safely when ABS is fitted ?

[ali-turko]

i would say undo the the bleed valve and the push the piston back, which i didnt do n f*ked the seals on the calipers

[Omurru]

I normally unbolt the hose from the caliper.....

[RBish]

would a r34 abs unit bolt str8 into a r32? anyone know?

[StevenCJR31]

it might and it might not, you probably need the two units side by side and compare

[RBish]

would probly have to bend lines to fit it, doesnt matter i sourced a nice 32 gtr pump