Brake Oil Bleeding
Brake Oil Bleeding
Hello,
I was planning on doing a SS line install and changing the brake oil on my X. I have been doing some reading on the following excellent link for a How-To.
http://www.joe250.com/cars/evo8/brak...ebleeding.html
However, I just realized, there wasn't much detail on how to drain the existing fluid in the first place. Is it as simple as the following?
1) Opening all nipples, bleeding/draining as much as possible by pumping the brakes.
2) Replace the lines with the SS lines.
3) Refill the reservoir with the new fluid
4) Then follow the directions in the above posted article.
I was planning on doing a SS line install and changing the brake oil on my X. I have been doing some reading on the following excellent link for a How-To.
http://www.joe250.com/cars/evo8/brak...ebleeding.html
However, I just realized, there wasn't much detail on how to drain the existing fluid in the first place. Is it as simple as the following?
1) Opening all nipples, bleeding/draining as much as possible by pumping the brakes.
2) Replace the lines with the SS lines.
3) Refill the reservoir with the new fluid
4) Then follow the directions in the above posted article.
Dude, dont pump the brakes with the bleeders open, you will be there all day that way. Replace the lines, you will lose plenty of fluid. Fill the resevoir, BTW dont let it get empty while you are changing lines. Add fluid when you have lines replaced, bleed in the proper order, you will likely go thru 1.5-2 bottles of fluid --fyi. When your done you will have fresh fluid in all lines and calipers. I just did this myself 2 wks ago--trust me.
Make sure you make a bottle with some tubing to put over the nipples into the bottle. You do NOT want brake fluid on those pretty brembos. Or you will deal with the consequences of the clear chipping / peeling.
Dude, dont pump the brakes with the bleeders open, you will be there all day that way. Replace the lines, you will lose plenty of fluid. Fill the resevoir, BTW dont let it get empty while you are changing lines. Add fluid when you have lines replaced, bleed in the proper order, you will likely go thru 1.5-2 bottles of fluid --fyi. When your done you will have fresh fluid in all lines and calipers. I just did this myself 2 wks ago--trust me.
This is what I understand from what you said:
1) open the cap on brake oil reservoir.
2) open the stock rubber brake line.
3) let as much fluid flow out as possible before putting on the new SS line.
4) Then, refill the reservoir with the new fluid and follow instructions as per the article I posted earlier.
In step (4), should I just keep filling in the new oil as the old oil level is going down, in order to prevent too much air, or should I just let it all drain before I start pouring in the new fluid?
Thanks in advance.
If you bleed it properly, all the old stock fluid will get flushed out of the system, leaving only the new fluid in the system. I'm not sure on the order to bleed either. It should be in the service manual. By order, I mean which corners do you bleed first. It's VERY time consuming, but you have to patiently bleed the brakes to get all the old fluid out and new fluid in.
In step 4, also make sure you always keep the reservoir filled. Don't let it go empty or you will introduce air into the system and have to start from scratch again. This is also a two-person job if you do it manually with the pumping method. I'd advise getting someone who has done it before to help you since you seem to be unsure about some of the steps required.
In step 4, also make sure you always keep the reservoir filled. Don't let it go empty or you will introduce air into the system and have to start from scratch again. This is also a two-person job if you do it manually with the pumping method. I'd advise getting someone who has done it before to help you since you seem to be unsure about some of the steps required.
Of utmost importance...DO NOT LET ANY AIR INTO THE BRAKE LINES. That could be catastrophic. If you're not 100% sure you can do it right, please take it to a shop. Bring your fluid with you and ask them to bleed the brakes and put in the new fluid.
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If you bleed it properly, all the old stock fluid will get flushed out of the system, leaving only the new fluid in the system. I'm not sure on the order to bleed either. It should be in the service manual. By order, I mean which corners do you bleed first. It's VERY time consuming, but you have to patiently bleed the brakes to get all the old fluid out and new fluid in.
In step 4, also make sure you always keep the reservoir filled. Don't let it go empty or you will introduce air into the system and have to start from scratch again. This is also a two-person job if you do it manually with the pumping method. I'd advise getting someone who has done it before to help you since you seem to be unsure about some of the steps required.
In step 4, also make sure you always keep the reservoir filled. Don't let it go empty or you will introduce air into the system and have to start from scratch again. This is also a two-person job if you do it manually with the pumping method. I'd advise getting someone who has done it before to help you since you seem to be unsure about some of the steps required.
If you're not 100% sure you can do it right, please take it to a shop. Bring your fluid with you and ask them to bleed the brakes and put in the new fluid.
. Seriously, I obviously dont wanna kill myself, but I also wanna learn to do it. Rest assured, I will not attempt it unless I have the steps jotted down 100% of the way.Until then, they'll just be sitting in my garage, no big deal. I'll take my time, thank you very much for the warning and advice though, I know you only have the best intentions in mind when yoiu say that
BTW, the bleed order is 4, 1, 3, 2... right rear, left front, left rear, right front
And I've read you need to have the car running to pump ABS... not sure if that's true but I did anyways on my VIII.
And I've read you need to have the car running to pump ABS... not sure if that's true but I did anyways on my VIII.
Last edited by migs647; Sep 16, 2009 at 09:07 AM.
BTW man, it's not OIL it is fluid. And if you have never bled brakes before you need to find a general how-to for BRAKE FLUID BLEEDING or BLEEDING BRAKES, it sounds like you may still be a little confused about the sequence of events that need to take place to force the old FLUID out of the system.






