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11-01-2018
I am trying to save some money by doing my brakes myself which I have done before, no biggie. My main area of concern is with bleeding. I have heard both sides of the story where some say you MUST bleed them while other people say as long as no air enters the line (keeping the cap on the master cylinder) you may not have to. What have you guys experienced doing it yourselves? I have a 2008 grand prix.
11-01-2018
If the fluid is really dark bleed all 4 brakes. If not, don't bleed. I loosen the master cylinder cap when compressing the calipers. Never had a problem.
11-01-2018
Changing pads and or rotors, no need to bleed.
Changing calipers, hoses and or master cylinder, must bleed.
And, as GYSOT1 said, if the fluid is dirty, should bleed.
11-01-2018
like stated, compress the caliper pistons, install new pads, pump brakes to get the pedal back. all is good to go.
there is a good chance the fluid is super old. it dont take much to flush it. i use a diy one man bleeder. aka a bottle with a hose into it from the bleeder nipple. pump pedal and it flush out the old and any air. dont let the master run dry. keep a eye on it and keep it from running dry.
if you got a old turkey baster i use that to suck out 95% of the old fluid, re fill with new fluid, then flush.
11-01-2018
My procedure:
Jack and support front or rear (whichever you are doing)
Lift hood and loosen master cylinder cap so there's no back pressure when compressing piston.
Remove caliper and a brake pad.
Compress piston using the brake pad so you don't hurt the caliper piston
Remove bracket
Remove clips from bracket one at a time and clean the bracket in that area with a wire brush
Ensure your new clip matches the old one and install new clip (do for all clips)
At this point you can lightly lube the clips with a little caliper grease and if you'd like you can put the new pads in as well or wait until you install the bracket again.
Remove rotor
Clean new rotor with brake cleaner to remove oil, install new rotor
Install caliper bracket (and pads if you didn't already)
Install caliper
Ensure all bolts are torqued or good and tight.
Put wheel back on
Next side
When brakes are complete, tighten master cylinder cap and close hood
Lower vehicle most of the way down and torque lug nuts
Start car and pump brake pedal until it's firm again.
That's it.. quick and simple. Over time the fluid does absorb moisture and other contaminates which a full flush will help and make your brakes feel much better.
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