Wednesday, September 11, 2013 - 03:37 pm, by: Tristan Ramsdale(Tristanra)
G'day all, sorry if there is a thread relating to this problem. I recently changed my lines on my 92 soarer UZ, now I can build pressure and it holds for a bit, but when i start the car the pedal goes to the floor. I can get some brakes, enough to stop me, but the pedal goes way low and it will throw an ABS code at me.
Sunday, September 29, 2013 - 06:01 pm, by: Tristan Ramsdale(Tristanra)
Yeah, sorry about the late comeback... rear brakes, stupid design... had to take them off and rebleed them upside down to get around the bleed nipple being higher than the brake line
Monday, September 30, 2013 - 07:10 am, by: Tom Richards(Tomr)
it sounds like you are not bleeding them correctly. It does not matter where the nipple is. Do you have another person pumping the pedal , then maintaining pressure whilst you loosen the nipple to bleed the air?
Monday, September 30, 2013 - 09:26 am, by: Robert Day(Lexsmaz)
Tristan Ramsdale wrote on Sunday, September 29, 2013 - 06:01 pm:
Yeah, sorry about the late comeback... rear brakes, stupid design... had to take them off and rebleed them upside down to get around the bleed nipple being higher than the brake line
..
The Height / position of the bleed nipple is the governing factor, it has to be the highest point of the Calliper piston cavity, some brake lines come in from the back of the piston cavity others may came in from the top, but its the bleed nipple which is the important part, ( So long as the callipers are installed properly / factory fitment they will always have the bleed nipple positioned at the highest point of the reservoir & will not need to be taken off & rotated etc to bleed them ) sounds like from your initial description that you have a gut full of air in the system, possibly from how you are trying to bleed your Back brakes, or the master cylinder is Now no good from long Brake pedal travel bleeding, the piston seals can get damaged sometimes when you manually bleed the brakes by pumping the pedal then releasing the pressure & have the master cylinder piston travel down the bore running over years of build up accumulated further down the bore of the master cylinder, that's why its best to vacuum bleed the brakes
Monday, September 30, 2013 - 04:31 pm, by: Tristan Ramsdale(Tristanra)
I fixed it... the bleed nipple being lower than the point of the brake line meant that there was still air in the upper section of the calliper...that cannot be fixed but pumping etc. becasue it just compresses the air in the top of the caliper. I have found several people having the same issue and fixing it as I did
Robert, you were correct, i had a gut full of air... it was in the upper part of the caliper on the rear brakes
Monday, September 30, 2013 - 04:43 pm, by: Tristan Ramsdale(Tristanra)
I guess it is possible in the long life my soarer has probably has had, that some idiot has put the callipers on the wrong sides, I didn't check though, i just put them back off the sides i took them off from... although that would beg the question who, and how someone else has had the issue
Peter Nitschke Junk Filterer South Australia UZZ30 UZZ31
Sunday, October 13, 2013 - 07:32 am, by: Ben Lipman(Ben12a)
I was trying to figure out how a calliper could be upside down (bleed nipple on the bottom), until you said maybe it was on the wrong side. That is the only way, otherwise your callipers would be on the front side of the rotors and there would be no mounts for it.
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