Brake pads Stuck can not loosen screws

[Biker1977]

Hello

my front wheel won`t turn, and seems that Brake Pads are corroded and stuck to Disc

I have tried taking the Calipers off but the screws seems hard to undo

can you please advice how I can go about it ?

Thanks
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Honda CBR1100

[DrSnoosnoo]

I get similar. My method, I'm not saying it's the correct method, is to get a rubber mallet and give my caliper a few love taps in all different directions til it frees enough to roll the wheel. Then I go for a ride and rub the rust off that way, be careful at first though, the brakes perform much worse until that layer is gone.
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I'm Sam; Northern, Ginger, Lover
Did have: '95 ZZR600 '83 CG125 '97 ZZR1100 '15 Hypermotard 821 SP Do Have: '10 ZX10R

[Biker1977]

[monkeybiker]

Are you sure it's the pads sticking to the discs and not the brake pistons sticking?

[DrSnoosnoo]

[Biker1977]

[Biker1977]

[monkeybiker]

I don't know what you mean by the bolts are stuck? Do you mean the bolts that hold the brake caliper to the forks? What tool are you using?

[mentalboy]

Double post.
____________________
Make mine a Corona.

[mentalboy]

[Biker1977]

[monkeybiker]

See if halfords have any tools on sale. Don't get cheap tools. You say the tool your using is worn then that can damage the bolt head and then you will have problems.

[DrSnoosnoo]

When mine are rusted into the discs, I think the problem isn't cross corrosion - pad-disc sticking - I think the problem is that the rust layers gets thick enough around the pads, just more than the clearance between the pad and disc.
____________________
I'm Sam; Northern, Ginger, Lover
Did have: '95 ZZR600 '83 CG125 '97 ZZR1100 '15 Hypermotard 821 SP Do Have: '10 ZX10R

[mentalboy]

[MarkJ]

To be fair 15/32 is pretty much exactly 12mm, but I agree he'd be best using metric.

OP do you know anyone with a breaker bar and 12mm socket that would fit it? The bolts are probably just too tight to undo with a normal short ratchet wrench/spanner, would probably undo fine with a 2ft breaker bar. Alternatively try and find a pipe that would fit over the socket/spanner to give you more leverage.

[mentalboy]

[Biker1977]

[Biker1977]

[mentalboy]

[Biker1977]

[mentalboy]

Brake fluid is not going to be your issue (or his!)

Pump the piston out a little way to clean it up then use something to push the piston fully home. Pump out and return a couple of times, if you have a gorilla type grip you may be able to push the piston home but most people need to use a mechanical aid, if it gives resistance using a cramp or pry bar to push it back then you'll need to strip out the piston.

Use a pad of wood of reasonable thickness to prevent the piston from coming out too far when you are pumping it out, you don't want brake fluid passing the seals because you've pushed the piston out too far. DON'T try to hold the piston back with fingers as this could trap them.
____________________
Make mine a Corona.

[Biker1977]

bought "Brake & Clutch Cleaner" from Halfords and gave the piston and caliper a clean and then a spray..left it for a bit come back and manged to move the Piston Home just with fingers !! ..looking Good!

Thank you all Especially MentalBoy, for all assistance.
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Honda CBR1100

[Iain.]

Pop the piston all the way out.

Theres two rubber seals. Pop them out too, then get some sort of scraping tool and scrape all the corrosion out from behind said seals.

Clean seals, get a bit of red rubber grease (Bike shops ought to sell it in little sachets for £1, motor factors might too) and cover the seals in it. Refit seals.

Take piston, get some wire wool and scrub all the rust/shit off it. Then cover the outer edge of that in rubber grease too. Pop back in the caliper and it'll slide in really nice and smooth.

Then it'll last & not give you anymore greif. Bit more work, but entirely worth it.

[Biker1977]

I have cleaned them but I am having trouble putting the Pads back on..they seem loose and not parellel.
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Honda CBR1100

[DrSnoosnoo]