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CB750F2 .... silk purse from a sows ear.
SumpMagnet:
Heat did the trick....along with a light 'tap' from the other end. Took a fair bit of work to clean the crud and rust residue out of the circlip groove, but it's all intact and the alloy itself has virtually no corrosion. None at all along the important section where the seals move.
Much cleaning up to remove the crystallised brake fluid that filled the space between the seal and the spring.
One rebuild kit to be ordered from DS .... and I am much happier doing that than fitting a replacement part. It will get a coat of satin black, along with the handlebar clamp piece which was black...but had been painted silver.... There is some flaky paint to clean back, but it should look nice when done. Circlip and washer were rusty as hell and went in the bin.
It's no wonder I couldn't push the pistons out easily....the seals were well gone
SumpMagnet:
Crowbarred open the wallet...and bought my first round of bits from DS.
Genuine master cylinder rebuild kit, front brake seals and dust boots, plus fork seals, dust covers and clips.
Went for a genuine rebuild kit, which actually costs more than the pattern setup....and twice what the cheap E-bay kits go for. But when it comes to stopping....I don't like to go economy.
Going to get the forks rechromed when I can afford it. Head bearings and a repaint of the yokes comes next. Plus I need to shell out for a set of brake hoses. Refitting 40 year old brake hoses is ....not a good idea.
edited...because I think I miss-typed just about every other word...
Green1:
I have used a few cheap rebuild kits on a few different bikes and the pattern kits almost always have the wrong size washers.
Other then that there OK.
All the little bits are what drain your wallet.
SumpMagnet:
Here is the first wallet drain....
But I have a problem.
I put the old and new piston assemblies together, and now I can't work out which is which. Can anyone help me spot which piston assembly is the new and which the old. They look identical...
haynes66:
always go with the one with patina...
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