Cleaning/spraying brake lines?

Xcellor

Looking for advice on dealing with a fail on NCT I failed on

Flexible Brake pipe Frayed/Cut - Ill replace this.
Antirole bar bushes and links - I'll replace this.

Brakelines/Hoses - Advanced Corrosion - Im going to take a look at this but if I am losing no brake fluid would I be ok to clean up whatever corrosion and spray paint?

I haven't replaced brakelines before, I think its easy enough but would like to avoid if possible

Robxxx7

Xcellor wrote: »

Looking for advice on dealing with a fail on NCT I failed on

Flexible Brake pipe Frayed/Cut - Ill replace this.
Antirole bar bushes and links - I'll replace this.

Brakelines/Hoses - Advanced Corrosion - Im going to take a look at this but if I am losing no brake fluid would I be ok to clean up whatever corrosion and spray paint?

I haven't replaced brakelines before, I think its easy enough but would like to avoid if possible

I had something similar regarding advanced corrosion on the brakelines ... i cleaned it back with some grit paper and cleaned the pipe with some brake cleaner (corrosion looked fine to me and no obvious signs of any bad corrosion)... then just gave the brake line a little spray with some WD40 and then put it back in for the NCT .. passed no issues.

I have since painted the lines now to prevent any further issue ... i wouldnt paint yours just yet as NCT advisor could still fail it as he/she couldnt see whether the corrosion had been fixed or not ... but i guess if you do paint it then there is also a chance they will have a look and see that its ok ..

CJhaughey

Sand back light corrosion with med grit paper 240 or so. Get a small bottle of olive green paint from a modelling supply shop and use a 5mm brush to paint the line. Works for me for the last 20yrs or so

Xcellor

Here is a pic of what I think is the issue, took the wheel off. Thankfully everything that failed is on this corner...

Very slight cracking on rubber hose. Like barely anything...

In two minds about whether to just bring it into garage.

What kind of effort involved in fixing the highlighted?

biko

The rubber hose is a quick fix but you need to bleed that brake as removing it and replacing will add air into the system.

The pipe (metal) seems in good shape but I can't tell properly from a photo. Sand it and look for corrosion.

Xcellor

biko wrote: »

The rubber hose is a quick fix but you need to bleed that brake as removing it and replacing will add air into the system.

The pipe (metal) seems in good shape but I can't tell properly from a photo. Sand it and look for corrosion.

Yeah I think the pipe is OK..

I brought the NCT report to one of these "Quick fitter" places, wanted a rough quote when he mentioned 200 I said thanks I'll maybe pop back in later in the week........

Just bought the parts and fluid and spanner tool for 50 including shipping.

I would have paid 100-120 but 200 was having a laugh.

kilianmanning

If the pipe is actually rotten, replace, brake pipes aren't a thing you want ready to burst. If its only minor surface rust, sand away & paint them up.

mickdw

You can get a roll of copper and make up a new line using a flaring tool. If the whole line is not accessible, you can cut the line and run a new bit of copper after flaring the line for the connector.
Copper type lines are easy to flare with a cheap tool. The steel lines as in the car are not so easy with the cheaper tools.

Xcellor

I just ended up sanding the corrosion off. I examined the brake cable most of which is sheathed i.e. not exposed in anyway to the elements its only at the end literally a couple of CM where the sheathing was removed to fit the screw cap ting and there was a bit of superficial rust. I sprayed it black to match the sheathing and it looks clean and is smooth with nothing to even suggest there is rust.

I ended up having to bring it into garage anyway because the bolt for the bushing support was seized and after spending a whole day at it I only managed to strip it completely. They ended up spending 2 hours (according to the bill) trying get it out which I assume they did. I asked them to take a look at brake line but they never mentioned it as a problem.

I just don't get the you must replace attitude, rust can be treated and if it is just surface replacing seems a waste. Will update thread to say how I get on...