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      04-10-2017, 07:35 AM   #23
Stronie
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I attempted swapping the lines this weekend. 3 / 6 lines completed.

I did not attempt the mid-rears yet. I didn't have an 11mm flare so that made it a bit tougher.

Problem with the front left. The hard line and the flared nut are STUCK. I Could not break it free from the hard line! Any suggestions? I spray PB blaster but I could not get it free. I'm able to rotate the nut from the rubber line but the hard line rotates too, I don't want to twist the hard line are more.
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      04-10-2017, 08:34 AM   #24
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Quote:
Originally Posted by Stronie View Post
I attempted swapping the lines this weekend. 3 / 6 lines completed.

I did not attempt the mid-rears yet. I didn't have an 11mm flare so that made it a bit tougher.

Problem with the front left. The hard line and the flared nut are STUCK. I Could not break it free from the hard line! Any suggestions? I spray PB blaster but I could not get it free. I'm able to rotate the nut from the rubber line but the hard line rotates too, I don't want to twist the hard line are more.
I'd say let the PB Blaster soak a bit, maybe for a few hours. Then, if it doesn't come free hit it again with the lubricant and let it sit. It's a pain sometimes, but much better than rounding or stripping these out.
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      04-10-2017, 08:49 AM   #25
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Some people have used heat, but you must be very careful due to undercoating, plastic fenders, and to not heat up the male end. PB blaster or Kroil would be better, and very good wrenches held very carefully.
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      04-10-2017, 12:19 PM   #26
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Thanks for the advice, I'll hit it again with the PB blaster and try.

I'll pull the fender wells and see if I can access the hard line. A replace line front left is only $26.00. If a can swap it out easily might be my only option, other than leave the stock robber line.

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https://www.realoem.com/bmw/enUS/sho...diagId=34_1486
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      11-16-2018, 04:44 PM   #27
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My hardline and flared nuts are also stuck. Front and rear so far I tried to break 6 of them, and 4 of them are stuck, so 66% of them are stuck. (I haven't tried the 2 upper nuts on rear inner - it looks totally impossible to reach) That's a pretty high rate. Around the brake area there are lots of gunk, dirt, etc., and it is easy to get stuck. It was even hard to place the 11mm wrench around the nut as they are so dirty (I have to scrape off and clean the nut first).

PB blaster didn't help, and you can't unscrew the hose on the caliper side either, so what I did was to first remove caliper from the bracket, and then rather than unscrewing the hose from the caliper, I unscrewed the caliper from hose - I held the hose stationary and then rotate the caliper inside wheel well until it came off. The I pried open the pin, pull the hose down a bit so that it came off the star-shaped bracket and can rotate and unscrew the hose from the hardline by rotating the hose. I guess I may be the only one to do this way, but it worked.

However I sheared the rear right hard line - that's a long one that run from right to left side - I am ordering the parts to get it replaced.
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      11-16-2018, 06:04 PM   #28
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This job can be a challenge on a car that has been driven year round including winter.
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