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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 07-27-2009, 05:30 PM   #1
Registered User
Join Date: Aug 2008
Location: Gloucestershire, UK
Posts: 6
My Ride: 318i SE Touring '00
Replacing Rear Brake Lines

I have just had my 2000 318i SE Touring fail it's annual inspection on a whole bunch of things but one of them is the rear brake lines which are corroding. The garage quoted me around 400-500 (about US$600-$750) to do the work which sounds excessive to me and it's money I really don't have at the moment. I checked out Ebay for the parts and tools that I think I would need (brake line flaring tool, pipe bender, pipe cutter etc.) and it's looking more and more appealing to do the work myself.

Can anyone tell me if this job is likely to be out of my league? I would say that I am a keen amateur mechanic with a good understanding of most things mechanical and I do routine maintenance like oil changes etc without breaking a sweat. I have a good selection of quality tools to hand and I don't mind getting my hands dirty.

Would I need to remove the fuel tank, prop shaft and exhaust or can I work around them? Will I be able to do the work with the car just on stands or does it need to be hoisted? I was looking at using copper lines but I have since read a few bad things about copper. Kunifer seems to be the preferred brake line material - any comments? Is it possible to clamp the brake lines anywhere to prevent draining the system or will I need to do a full drain, re-fill and bleed? If so is that a big job? Is the clutch on the same hydraulic system? Will that need bleeding too?

Answers to any of the above will be really gratefully received. I have googled around a bit and only managed to find a walkthrough on replacing the flexible sections with braided SS hoses so if anyone has a link to a DIY walkthrough on replacing the rigid lines I would be eternally in your debt

Thanks, Paul.
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