Tips to refit brake pipe into caliper

[Stephenjk]

Hi,

Any tips in refitting the copper brake hose pipe into the caliper? I've replaced the side plates and seals and painted the calipers and just trying to refit them. I'm having trouble getting the screw started in the thread for the brake hose. I'm doing it by hand as I'm scared if I use the flare spanner to start it I'll cross thread it. Is it best to have the steel screw at the end of the pipe or bit further up? could it be I'm not pushing the copper pipe far enough into the caliper before trying to tighten the bolt around it? I tried for 5 mins with brake fluid dripping down, but aside from making a mess just couldn't get the thread started.

Any tips or suggestions?

thanks
Stephen

 

[Stephenjk]

I managed to get it in, what made it a bit easier was working from above rather than below. It seems to be in place, per this pic. not sure now how to assess 12 NM with a flare spanner. Any suggestions I still think this is sticking out a bit too much so probably need a bit more of a tighten.

 

[Lancerlot]

12nm is not very tight. Just nip it up and the flare should seal it. Once bled, ask someone to depress the brake pedal and check for leaks. refitting a male union often proves difficult due to previous overtightening expanding the flare too much. Provided the flare seat itself in undamaged, this may often be resolved by reducing the edge slightly using an abrasive or light file.

Btw - Anything decent in the wine rack?

Regards,

Clive

 

[Stephenjk]

Thanks clive, i can't do the other one now so I'll try that. The thread isn't in great condition too so that also isn't helping as there has been some historic corrosion and i think a bit of the thread has been lost.

A few nice wines in the rack which i never seem to get around to drinking so trying to drink my rack down and start again!

 

[Stephenjk]

Managed to get the second brake pipe connected. Took caliper off again and cleaned the thread in the caliper with a cloth and also a small screwdriver where I had a bit of corrosion in the thread. it went in fairly easily once I'd done that.