Getting front calipers back onto new(ish) discs

[juxt]

So I am having trouble getting the front calipers back onto my new(ish) discs.

Today I jammed a couple of flat-blade butter knives and a big wide flathead screwdriver between the pads. While I held a bit of outward pressure, I released some fluid out of the bleed nipple (lol, nipple).
I gave the pads a bit more of a 'elbow grease jimmy'.

Then I could not get the bloody calipers back onto the discs. The discs are about 0.5mm thicker than the old ones I am replacing.

I trust someone here will have some suggestions about what to do next (maybe I should piss on it?).

[antman]

Try pissing on em
If that doesn't work try a g clamp to push in the pistons.
Or even some big enough multi grips

[Matt]

i'm with the g-clamp. worked for me last brakes i did.

[Aduro]

Take the pads out first but.

[smiley_666]

and put an old one in if you still have them. saves damaging the face of the piston in any way (only a minimal chance anyway, but lessening it isnt bad)

[K916]

G clamp is the best.

But why dont you overhaul the callipers if you have fitted new discs? Thrown in some braided lines too and enjoy all round better braking

[ezekiel67]

Are your pistons clean?

Clean pistons are easier to push back.

[juxt]

OK, the clamp seems like a good idea.
Thanks fellas.
Oh, and Keith, I've already got braided lines

[studricho]

(05/09/2010 20:33)ezekiel67 Wrote:  Are your pistons clean?

Clean pistons are easier to push back.

If you have grime/rust or just brake build up this can prevent the piston going back in. Use some scotch brite and some rubber grease to help the piston go back in further.

[Skellyton]

hmm, rubber grease has many uses...