[ajaye]

My CBS brake fluid flush indicator lit up last month, and its a strong possibility that the previous owner hadn't done it the last time the CBS was reset so I'm preparing to take car of this ASAP. My brake pads were near due as well so I've gotten a Motive Black Label and gotten all my brake parts ordered in the meantime so that I can do the entire system at once (pads, rotors, all hardware and sensors). My question:

Should I go ahead and flush the fluid FIRST, then replace all the parts? My thought is that instead pushing all the old fluid back into the lines when I press the caliper pistons back in and sucking it out of the reservoir, then pushing it back through the calipers again, I should just push it out with the bleeder first, then proceed to the brake parts replacement. Since I am very good at doing dumb shit, this would also afford me the safety of not accidentally contaminating my brand new shit with brake fluid and/or identifying any caliper issues before I get too far into the parts replacement. Thoughts/experiences?

[CALWATERBOY]

Originally Posted by ajaye

My CBS brake fluid flush indicator lit up last month, and its a strong possibility that the previous owner hadn't done it the last time the CBS was reset so I'm preparing to take car of this ASAP. My brake pads were near due as well so I've gotten a Motive Black Label and gotten all my brake parts ordered in the meantime so that I can do the entire system at once (pads, rotors, all hardware and sensors). My question:

Should I go ahead and flush the fluid FIRST, then replace all the parts? My thought is that instead pushing all the old fluid back into the lines when I press the caliper pistons back in and sucking it out of the reservoir, then pushing it back through the calipers again, I should just push it out with the bleeder first, then proceed to the brake parts replacement. Since I am very good at doing dumb shit, this would also afford me the safety of not accidentally contaminating my brand new shit with brake fluid and/or identifying any caliper issues before I get too far into the parts replacement. Thoughts/experiences?

Opinion: Flush after parts R&R'd.

[feuer]

Originally Posted by ajaye

My CBS brake fluid flush indicator lit up last month, and its a strong possibility that the previous owner hadn't done it the last time the CBS was reset so I'm preparing to take car of this ASAP. My brake pads were near due as well so I've gotten a Motive Black Label and gotten all my brake parts ordered in the meantime so that I can do the entire system at once (pads, rotors, all hardware and sensors). My question:

Should I go ahead and flush the fluid FIRST, then replace all the parts? My thought is that instead pushing all the old fluid back into the lines when I press the caliper pistons back in and sucking it out of the reservoir, then pushing it back through the calipers again, I should just push it out with the bleeder first, then proceed to the brake parts replacement. Since I am very good at doing dumb shit, this would also afford me the safety of not accidentally contaminating my brand new shit with brake fluid and/or identifying any caliper issues before I get too far into the parts replacement. Thoughts/experiences?

since you are not replacing the calipers and hoses flush the brake fluid first.

[mweisdorfer]

Originally Posted by ajaye

My CBS brake fluid flush indicator lit up last month, and its a strong possibility that the previous owner hadn't done it the last time the CBS was reset so I'm preparing to take car of this ASAP. My brake pads were near due as well so I've gotten a Motive Black Label and gotten all my brake parts ordered in the meantime so that I can do the entire system at once (pads, rotors, all hardware and sensors). My question:

Should I go ahead and flush the fluid FIRST, then replace all the parts? My thought is that instead pushing all the old fluid back into the lines when I press the caliper pistons back in and sucking it out of the reservoir, then pushing it back through the calipers again, I should just push it out with the bleeder first, then proceed to the brake parts replacement. Since I am very good at doing dumb shit, this would also afford me the safety of not accidentally contaminating my brand new shit with brake fluid and/or identifying any caliper issues before I get too far into the parts replacement. Thoughts/experiences?

Correct me if I am wrong, but doesn't the motive black label suck the old brake fluid out from the bleeder screw on the caliper. As long as you have a bottle of fresh dot 4 being gravity feed from the master cylinder, I don't think you have anything to worry about. You just suck out the old fluid starting with the passenger rear until it comes out clear.

I am not sure that it matters whether you do it before or after you change the pads etc., because you are sucking out the old fluid until you see clear fluid anyhow.

If the motive black label does not work this way, return it. Get a Mitivac. It does work this way, and it does an awesome job.

http://www.amazon.com/Mityvac-MV6835...ywords=mityvac

[CALWATERBOY]

.

The Motive device pressurizes the brake system at the brake fluid reservoir. Then, go to each wheel and bleed.

Never liked vacs - if air can be pulled in, it will be. Unlikely I know but still.... And keep that reservoir topped - vac'll draw it down.

I prefer bleed after parts R&R 'cause maintenance tends to loosen any crud on the liquid side. Bleed removes.