Bleeding Brakes?

**BRICKYARDDTX** · 07-12-2009, 07:37 PM

The trusty Haynes manual says to have the dealer bleed the brakes if you have traction control (which I do)...Why is this? It mentions the need of a "Tech-1" or "T-100 (CAMS") tool..any ideas? The bleeding procedure it does describe sounds simple enough (simple to me as I've worked on BMW motorcycles with electronic servo activated ABS) But I want to be sure before try...

**Mr. Luos** · 07-12-2009, 07:51 PM

Never had a problem....as long as the ABS block doesn't have air in it. Which it shouldn't...unless the master ran dry.
I always just do it the regular old way. Pump, release. Start furthest away from the master and work to the closest wheel.

**Spaz** · 07-13-2009, 05:03 AM

Originally Posted by Mr. Luos

Never had a problem....as long as the ABS block doesn't have air in it. Which it shouldn't...unless the master ran dry.
I always just do it the regular old way. Pump, release. Start furthest away from the master and work to the closest wheel.

same here... i've never had a problem doing it this way...

and a side note... that haynes manual sucks!!!

**99RTA** · 07-13-2009, 05:28 AM

Pumping and releasing is an old wifes tale. Its not the proper way and just makes more trouble as it actually aerates the more.

Easiest way to bleed the system is to fill the master cylinder then open ALL the bleeders, check it every 10 mins or so and keep the master cyl full. Once they all run clear you can close them and you will be good to go.

**rbob93** · 07-13-2009, 05:49 AM

Originally Posted by 99RTA

Pumping and releasing is an old wifes tale. Its not the proper way and just makes more trouble as it actually aerates the more.

+1 on no pumping.
That method comes from the old 4 wheel drum brakes & single master cylinder days.

A variation of the old method is press & hold.
No pumping.....just press & hold.
It prevents the fluid from aerating as mentioned.
Pressure bleeding or a mityvac great.
Gravity bleeding as mentioned above is a great way too.

**99RTA** · 07-13-2009, 05:54 AM

I agree with you completely, want a even faster method go buy a set of the auto bleeder screws.

**Spaz** · 07-13-2009, 10:34 AM

Originally Posted by 99RTA

Pumping and releasing is an old wifes tale. Its not the proper way and just makes more trouble as it actually aerates the more.

Easiest way to bleed the system is to fill the master cylinder then open ALL the bleeders, check it every 10 mins or so and keep the master cyl full. Once they all run clear you can close them and you will be good to go.

i've never had a problem with it and it has always got the air out of my brake lines... so it is not a wives tale...

**Mr. Luos** · 07-13-2009, 10:41 AM

Originally Posted by Spaz

i've never had a problem with it and it has always got the air out of my brake lines... so it is not a wives tale...

I for one will try a different method to see if it works....

**JaycenK** · 07-13-2009, 11:28 AM

I have never had a problem but then again I don't really pump the brakes. I crack the valve and just press down and hold untill the valve is closed again and then let off and do it again. The gravity feed is good if your working by your self and don't have anyone around.

**BRICKYARDDTX** · 07-13-2009, 04:48 PM

As I said Ive worked on BMW bikes and they require a specific sequence for bleeding the abs pump. My concern is Ive got to remove the calipers and just want to know what I'm I for if the system runs dry...

**JoshieDoom** · 07-13-2009, 04:54 PM

Originally Posted by BRICKYARDDTX

As I said Ive worked on BMW bikes and they require a specific sequence for bleeding the abs pump. My concern is Ive got to remove the calipers and just want to know what I'm I for if the system runs dry...

Use good foam earplugs to stick in the brake line when its undone from the caliper. It will swell up and seal it off.

**BRICKYARDDTX** · 07-13-2009, 05:05 PM

Plenty of those around the bike shop

**rbob93** · 07-13-2009, 05:06 PM

Originally Posted by BRICKYARDDTX

As I said Ive worked on BMW bikes and they require a specific sequence for bleeding the abs pump. My concern is Ive got to remove the calipers and just want to know what I'm I for if the system runs dry...

DO NOT let it run dry!!
Plug the line with something like Joshiedoom suggests.

If you get air in the ABS block you will need the dealership.

**JoshieDoom** · 07-13-2009, 05:24 PM

Originally Posted by rbob93

DO NOT let it run dry!!
Plug the line with something like Joshiedoom suggests.

If you get air in the ABS block you will need the dealership.

These will swell up. I left mine in about 3 hours with no leaks. It was leaking all over the place and I had no fluid and was searching the shop for a set of plugs when I came across the box of these.

Works great.

**dklowrider** · 07-13-2009, 05:58 PM

Originally Posted by JaycenK

I have never had a problem but then again I don't really pump the brakes. I crack the valve and just press down and hold untill the valve is closed again and then let off and do it again. The gravity feed is good if your working by your self and don't have anyone around.

thats the only way i ever knew. got to have a partner in tune with you: push it down- - down, let it up- - up, push it down- - down, let it up- - up, how's the pedal feel- - good

**pajeff02** · 07-13-2009, 05:59 PM

Originally Posted by JoshieDoom

These will swell up. I left mine in about 3 hours with no leaks. It was leaking all over the place and I had no fluid and was searching the shop for a set of plugs when I came across the box of these.

Works great.

Great idea.

I always use my Mity-Vac to bleed brakes. Takes just a few minutes to do the whole system and purges the old fluid from the lines in the process.

**Mr. Luos** · 07-13-2009, 09:40 PM

I have had the brake lines off my car for over 6 months....didn't run the master or the ABS block dry....

**JoshieDoom** · 07-13-2009, 09:49 PM

Originally Posted by Mr. Luos

I have had the brake lines off my car for over 6 months....didn't run the master or the ABS block dry....

Mine was pissing a steady stream. Easily would have ran in dry in minutes

**Mr. Luos** · 07-13-2009, 09:52 PM

Originally Posted by JoshieDoom

Mine was pissing a steady stream. Easily would have ran in dry in minutes

Mine drained the lines...but not the master or ABS block.

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