Panic Stop, now no brakes and Puddle of fluid?

[andrewwynn]

Why does it fail right there? It appears that because of the bend the rust prevention coating is compromised at the factory. It just takes time and simple humidity in the air is enough for rust to form and work under the coating and grow.

Every E53 I guarantee has this problem. A simple prevention would be too scrub with steel brush and hit with some naval jelly then Rust-Oleum paint. If done closer to 100,000 miles 160,000 km, you will prevent the failure. That would be a good time to repair the siphon jet pump o-ring.

I will be checking my wife's e53 asap. I'm going to just drill a 2-3" observation hole to get into that space without removing the whole panel. I should be able to prevent hers from failing like mine did.

If hers is "made of rust" as mine was I'll splice in a piece like mentioned above it will save about 4% hours not replacing the whole pipe.

update: my amazon review is live. It includes a 12 minute video showing exactly how to fix the defective tool and properly make a perfect iso bubble flare every time.

[sgrice]

Andrewwynn - Just want to say Great Job!!!

I just watched the video on the Amazon review, and it was very nicely done. I also loved the photos with descriptions. You really described things nicely.

Thanks again.

[Best4x4xFAR]

Any special Bleeding procedure once repaired? Master never went dry, hoping that it is a simple bleed of both rear calipers?


Where is everyone sourcing the brake line material (anyone know the size off hand), just local auto parts store? SAE or Metric Flaring tool?

[BimmerDude11]

Originally Posted by Best4x4xFAR

Any special Bleeding procedure once repaired? Master never went dry, hoping that it is a simple bleed of both rear calipers?


Where is everyone sourcing the brake line material (anyone know the size off hand), just local auto parts store? SAE or Metric Flaring tool?

As long as fluid level was kept up, it should be a simple brake bleeding procedure of passenger's rear (furthest away from master cylinder) then driver's rear.

As far as pipe goes, any auto parts store should have sections of line usually with ends already fitted.
If you car reuse the connection near the front end that would bee most ideal as one of the lines coming from the ABS pump is a bigger size and gets reduced asst that union. All the other lines are size M10.
If that's possible then you would just need to make a connection somewhere along the long straight section. Metric fittings use a bubble flare, so be sure to get a tool that does those and not double flares (SAE).

Sent from my SM-G935T using Xoutpost.com mobile app

[andrewwynn]

Originally Posted by Best4x4xFAR

Any special Bleeding procedure once repaired? Master never went dry, hoping that it is a simple bleed of both rear calipers?


Where is everyone sourcing the brake line material (anyone know the size off hand), just local auto parts store? SAE or Metric Flaring tool?

I think if you managed to not get any air back though the line you can use a simple bleeding procedure: I would use a pressurised system that pumps fresh fluid on demand from a pressurised tank into the reservoir. If air got into the abs block you need a high level tool to activate the block to push it out.

You should be able with a friend bleed the brakes with the pump pump pump hold on the brake pedal but only if you managed to avoid getting air into the system.

Pipe is 3/16 I bought 25' which is more than needed for replacing both rear lines but of you just repair the line likely could buy less than 10'. NiCopp is a brand of nickel copper line.

The fittings are 10x1 mm and 12mm (can't remember if 1mm pitch).

Iso bubble flare.

http://a.co/8K7gakD that's the exact tool I bought and re-worked the horrible engineering of the tool to basically be perfect.

[Best4x4xFAR]

Originally Posted by andrewwynn

The fittings are 10x1 mm and 12mm (can't remember if 1mm pitch).

Wait, they are different sizes??


Found the 3/16 lines at the local auto parts store, and they even have bubble flares on them, but can't find a bubble flare tool at the local rentals, nor can I seem to find the metric unions and fittings..

[BimmerDude11]

Originally Posted by sgrice

Andrewwynn - Just want to say Great Job!!!

I just watched the video on the Amazon review, and it was very nicely done. I also loved the photos with descriptions. You really described things nicely.

Thanks again.

+1 Andrewwynn
I think that thoroughly explains why I had such a hard time making my flares.
Definitely will be modifying my tool as well.
Thanks.

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