Replacing Abs Unit, In Need Of Few Tips

[_Dee]

So ive been searching around for awhile in topics related to ABS units on r32 gtr's as mine has started to leak. Found a few threads on people deleting them completely etc but i plan to just replace mine with a newer unit that i recently picked up. Couldnt find any guides with pics on people deleting/removing their abs units so ill have to figure that out myself when i install my new brake pads, rotors and replace the fluid.

My dilemma is, ive always been told not to run the BMC dry, ok fair enough ive looked that up and seen how much pita for some to get it back working 100% again, but removing the ABS unit and putting the new replacement in will obviously end up having some air get into the system once i reconnect everything and clean up the mess and ive seen few mention that getting air into the abs unit itself is also a problem and a half to fix and get the air out.

So my question is, if anyone has replaced their ABS unit before, did you run into problems bleeding the system after and getting air out of the unit? or was it simply replace unit then bleed system and all fine and dandy again?

Cheers,

Dee

[MrStabby]

I did mine. Was a PITA to get it fully bled again, but quite possible. Just kept bleeding until i had a hard pedal. I used a vacuum bleeder on the ABS itself - not sure if that's necessary tho.

[_Dee]

How many bottles of brake fluid did you end up using and how did u use the vacuum bleeder on the abs itself? Haven't used any of those bleeder tools before usually just normal gravity bleed but in this case I need to make sure as I'm changing rotors and pads at the same time wud be embarrassing taking it out to bled in brakes and neck minut cant stop haha

[MrStabby]

Cant remember how much fluid i used but i always have a couple of 500ml bottles on hand. I also usually just gravity bleed but due to the ABS nipple location I got the vacuum bleeder. You just put the hose on the nipple, release it a bit and pump away.

I would do the pads and rotors before or after, just to separate the work to simplify it.

Also you shouldn't ever get in the situation where you cant stop - dont take it out until the pedal feels right

[_Dee]

haha well was over exaggerating with the cant stop situation, wudnt risk my car like that =P and cheers, i only recently found out about the abs unit having bleed nipples so im assuming as its located on the top, gravity bleeding it prob wont work? ill buy a vacuum bleeder if thats the case. Probably also get 4-5 bottles just incase and do the pads and rotors after the unit is bledded in and entire system flushed.

Thanks for all the help =)