Replaced Calipers

**luckyg817** · 11-03-2014

Hey guys, quick question. I replaced the front calipers on my 04 on Saturday. Did I need to bleed all 4 calipers or just the front ones? I bled the passenger side first and then did the driver side and the brakes feel good and better than before but just wanted to get that doubt out of my mind. It was pretty straight forward and easy changing them out. There was no torque specs for the bolt on the brake line right? I just tightened it pretty good and checked for leaks after turning the car on and having someone pumping the brakes. The old passenger caliper wouldn't even go back enough to slide over the new brake pads no matter how hard I pushed that piston in. The bushing around the piston was torn and broken and I just replaced both since I figured the other side might be on its way out too. Got the reman ones at autozone being that they were warrantied for lifetime plus I work there and get 30% off. Haha.

**BillBoost37** · 11-03-2014

Technically, you should bleed all four corners, starting with the RR, LR, RF then LF

**Scottydoggs** · 11-03-2014

your ok just bleeding the fronts.

**luckyg817** · 11-03-2014

Well I do need to do a flush on the brake fluid but I was running low on time and just wanted to finish already cuz I had to go pick up my daughter already. And basically bleed the system starting with the caliper furthest away from the reservoir and work my way down right?

**Scottydoggs** · 11-03-2014

yup. like bill said.

**BillBoost37** · 11-03-2014

And to back Scott up further.. technically if the master cylinder doesn't go dry ..then you shouldn't need to bleed all four. However it's common and good practice to ensure the best braking possible.

**luckyg817** · 11-03-2014

Yea I kept an eye on the reservoir while bleeding and made sure it didn't go dry. Now i'm the type that likes to know why things work the way they do instead of just how they should work. So with that being said, why do you have to bleed the brakes in that certain order? Are all the brake lines eventually tied in together at a certain point and that comes into play or what?

**Scottydoggs** · 11-03-2014

Originally Posted by BillBoost37

Technically, you should bleed all four corners, starting with the RR, LR, RF then LF

like bill said. ^^^

**Scottydoggs** · 11-03-2014

back and front brakes are separate. ( unless the master goes dry, then they all "need" to be bleed, along with the master) but always start at the furthest away wheel.

**luckyg817** · 11-03-2014

Scottydoggs, I read that and understand there is a certain order but I'm asking WHY is there a certain order?

**Frosty** · 11-03-2014

Originally Posted by luckyg817

Scottydoggs, I read that and understand there is a certain order but I'm asking WHY is there a certain order?

The order bill posted basically has you bleed the "furthest" caliper from the master cylinder first, then the 2nd furthest, 3rd, 4th.... you get the idea. The goal is to bleed the longest line first so that you dont have bubbles from the longer lines "unbleed" your shorter lines.

**luckyg817** · 11-03-2014

Ok. Got it, thanks.

**luckyg817** · 11-03-2014

Tcboltfawker, thanks for the explanation. That's what I was looking for. So all the brake lines do tie in at a certain point then?

**Scottydoggs** · 11-03-2014

yes and not really lol theres a lot going on, master to the abs pump is just front and rear, from there its a line to each wheel.

some older cars tho, split the rear brake line so both backs used the one line back to them. so thats where the old rr, lr, rf, lf all started from i guess.

**Impala131** · 11-03-2014

Correct me if I'm wrong, but I thought I read somewhere that bleed order doesn't matter if you have an ABS module.

**Scottydoggs** · 11-03-2014

in the end i bet it really dont matter much, but the old rules always say LR, RR, THEN THE RF ,LF.

**BillBoost37** · 11-03-2014

Really.. it comes from the FSM (factory service manual) without any good info as to why,

On my pickup though.. with only one rear line, it gets the air to the furthest line..then each after that is closer and faster/easier to bleed the air from.

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