Bleeding brakes
- Thread starter freeon
- Start date
They are the same
Just follow the bleed sequence in the service manual, RR, LF, LR, RF.
Regards,
LarryB
Just follow the bleed sequence in the service manual, RR, LF, LR, RF.Regards,
LarryB
They are the same
Regards,
LarryB
Larrry,
In the past when I bled brakes I always did the RR then the LR, RF then LF. I always figured do the ones furthur away then move closer to the master cylinder. That was before I ever read any manual that had a specific sequence. Is the NSX sequence because of the separate circuits in the master cylinder for the front and rear brakes? By doing the RR first, gets all of the fluid/air out from the furthur point and then goint to the LF gets the fluid/air our of the front circuit, but isn't the RF furthur from the master cylinder? With two separate circuits for the front and rear I wouldn't think that it would matter. Now what would matter is if they have this order to keep any air from reintering the reservoir when you are actuating the master cylinder pressurizing fluid and releasing pressure. Just a thought.
Brad
Hi Brad
they want you to bleed the brakes due to the duel circuit setup.
the circuits are setup so you have FL with RR and FR with RL.
If one of these lines break, you would still have 50% of the total breaking power.
They use to make lines so that front and back where on different circuits.
When the back break goes out, its not much of a problem since the front brakes do 80%+ of the braking... but when the front brakes go out, people are in trouble.
So they did the split circuit.
depending on the paint, I would be very very very careful when you bleed the system. make sure not to get any brake fluid on the paint or the BF will lift off the paint quickly.
Use a tube to redirect the brake fluid into a bottle. Also wrap rags around the nipple so if BF does leak out, the rag gets most of it.
they want you to bleed the brakes due to the duel circuit setup.
the circuits are setup so you have FL with RR and FR with RL.
If one of these lines break, you would still have 50% of the total breaking power.
They use to make lines so that front and back where on different circuits.
When the back break goes out, its not much of a problem since the front brakes do 80%+ of the braking... but when the front brakes go out, people are in trouble.
So they did the split circuit.
depending on the paint, I would be very very very careful when you bleed the system. make sure not to get any brake fluid on the paint or the BF will lift off the paint quickly.
Use a tube to redirect the brake fluid into a bottle. Also wrap rags around the nipple so if BF does leak out, the rag gets most of it.
They are cross connected as Rob mentions. The idea is 50% braking AND keep the car stopping in a straight line, if there is a failure of one circuit.
So you want to bleed EACH circuit from the farthest away bleed point to the closest. This is why for each circuit it startes with the rear.
Just following the service manual.
Regards,
LarryB
So you want to bleed EACH circuit from the farthest away bleed point to the closest. This is why for each circuit it startes with the rear.
Just following the service manual
.Regards,
LarryB
Great,
Thanks guys, I learned something new tonight. NOW I UNDERSTAND. I had never looked at the diagram and realized the RR and FL being on the same circuit and RL and FR being on the same circuit. Now I understand the reason for the sequence.
So, my old technique still stands the "common sense" test as long as the fronts and the rears are on separate circuits, as in most average run of the mill vehicles, NOT the NSX.
Brad
Thanks guys, I learned something new tonight. NOW I UNDERSTAND. I had never looked at the diagram and realized the RR and FL being on the same circuit and RL and FR being on the same circuit. Now I understand the reason for the sequence.
So, my old technique still stands the "common sense" test as long as the fronts and the rears are on separate circuits, as in most average run of the mill vehicles, NOT the NSX.
Brad
Hi Brad,
I dont want to come off sounding confrontational, we are all friends here. I believe since the mid 70s (some time before I was born :tongue: ) all cars come with the X braking systems. It is regulations.
On classic cars they still have the front rear split and your definitly correct in this regard.
i learned this back in the days at school. acturally learned something useful..:wink:
warm regards
Rob
mmm....I did not know it was a regulation. It must not apply to "trucks". I did a brake bleed recently on a 2000+ F250, the rear system was a "T" setup, using one line for the rear circuit.
Regards,
LarryB
Hi Rob,
I don't want to start a fight but there are some current cars and trucks that still use a front/rear brake split set-up. A few 2008+ examples are: Corvette, Chevy Colorado, Ford F150, Chevy Trailblazer. I know the brake products on these vehicles because I was involved in the design and development.
You are correct, that the cross-split (x split) system is more popular with cars and small SUV's.
Reguards,
Bob
lol no worries. we are here to exchange ideas, not to fight.
cool, i was mistaken and had the wrong impression.:smile:
Rob
