Thanks for the compliments, not my first build/resto thread though, I have one for my NC on 400greybike if anyone fancies a read. Same username so easy to find
Well I'm hoping to keep the angle grinder in it's box. That's my absolute last resort tool!
Tonight has been all about the rear brake and it's many corrosion related ailments.
First thing was to get the torque link off the frame end as I wanted to remove the rear wheel to get the caliper into the vice.
Fitting the current trend of this bike, there was no split pin fitted to it and the nut was fitted the wrong way round. Did make it easier to come off though.
Into the vice to remove the torque arm it went. I utilised some shock and unlock, plus my favourite bodging tool, the mole grips. Brute force and ignorance were also applied
Luckily the nut yielded but won't be re-usable (I knew that already). The bolt however should be good to go after a good clean up.
So to remove the stuck and rounded caliper bolt I opted for the cobalt drill bits, which made short work of the head.
After the head was removed I carried on drilling the bolt hoping to get it moving with heat and friction from the drilling. My hope was well placed and the rest of the bolt came out cleanly.
More stuck things. Namely the bleed screw and the banjo bolt. Heat gun and gentle persuasion saw them free.
Then I split the caliper to find that the mating seal was missing. Good job I had a spare left over from a caliper rebuild I did on the NC. Not the correct part but suitable enough for the intended purpose.
I also found that both the pad pins were well and truly stuck also. Cue the heat gun.
One came out after some heating and sticking the bugger in my drill chuck and spinning it out.
The other simply snapped off whilst in the drill. So I punched a guide in the end and got out the cobalt bits again and drilled it out it no time.
Next was to run taps through the threads as they were full of corrosion and filth. Now part of this next picture looks dodgy as hell, but my spare bleed nipples from nissin calipers did not fit so I had to improvise a way to seal the nipple port without one to enable bleeding. Luckily I had the correct size bolt, so shoved that in there.
Bleeding the caliper was a pig, as all opposed pistons are. So much easier on the sliding rear on the NC....
However after some time and faffing about, including getting brake fluid everywhere like usual, I had it bled up and was able to pump out one of the pistons. The other is yet to break and I need to find a way to hold the broken one back without it hitting the other piston.
That's a job for tomorrow though.
Some of the pictures are fuzzy and out of focus, all I have is my phone camera and sometimes get impatient waiting for it to auto focus, so I apologise for that. But you get the idea!