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CB750 Barn find project - First Timer
Underdog1:
--- Quote from: Jontyp on August 10, 2016, 07:22:11 AM ---I feel you pain on this one but the solution is more heat. There's nothing else to damage with heat except the seals and you're losing them anyway so have at it with a blow torch. I used a larger motorcycle tyre lever (has a perfectly designed hooked end just right for the job). Take your time, apply plenty of heat and they will come out (always assuming you've taken the wire retaining ring out first which it looks like you have).
Don't be afraid of using heat when stripping down old stuff (with the obvious proviso that you're not melting something important. It works great with steel parts stuck in aluminium (the seal inner ring will be steel) but even with the same materials it can be the best way to break a bond caused by years of corrosion.
--- End quote ---
Cheers mate!
Just received a front brake caliper i bought yesterday from DK. Got it for £60 which is cheaper than they usually go for on the bay but its negative piston and pad seat.
The pad seat is number 17 here, just before i order one can someone confirm whether this would come with a new brake pad set or is it actually part of the caliper?
Underdog1:
Managed to get both fork seals out, went medieval with a dremel and then managed to hammer a flat head screwdriver behind it. As soon as they shifted slightly i could pull them out with pliers.
My fork tubes were rusty as hell so i ground off as much as i could. They're badly pitted but not on the actual part which slide in the lowers. Do you guys reckon i can get away with leaving them like this or should i at least paint them to stop them rusting again?
One done
two done
Could probably do with a bit of a sand as they're a bit rough, but currently all i can find is 240 grit wet and dry
Now the latest challenge is the DK special front brake caliper has a seized piston. Im not able to attach the front brake lever as the master cylinder is tits.. I have an air compressor but i can't screw it into the caliper as it just has a rounded nozzle. wrapped some insulation tape around some pliers and tried to pull it out but it doesn't budge. Any ideas? if i could fill it with something that wold dissolve the old crusty brake fluid that would be ideal!
Trigger:
They look normal for a early 750 fork. You will have to heat the caliper and you can use a grease gun to push the piston out.
Underdog1:
--- Quote from: Trigger on August 10, 2016, 07:47:09 PM ---They look normal for a early 750 fork. You will have to heat the caliper and you can use a grease gun to push the piston out.
--- End quote ---
Ok cool so something like this yeah?
http://www.screwfix.com/p/hilka-pro-craft-manual-grease-gun-500cc/19235#product_additional_details_container
Might be a daft question but how do you actually attach a grease gun to the brake line hole?
secondly whats a good grease to get that I can use on the bearings and swing arm etc? Might as well get something i can use for other stuff
Trigger:
You need to find out if the fitting on the grease gun will fit the caliper at the pipe.
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