Removing front brake pistons on a 99 txt trials bike

[Rabbitist]

As above really struggling to get the 4 pistons out of the caliper managed to get one out by pumping the brake but the test are solid.. Any tools I can make up or buy if need be to gerty them out? Our any tricks of the trade? Cheers

 

[MJC]

As above really struggling to get the 4 pistons out of the caliper managed to get one out by pumping the brake but the test are solid.. Any tools I can make up or buy if need be to gerty them out? Our any tricks of the trade? Cheers

Just use air from an air compressor. Just remove the brake bleeder and blow air,100 psi, into the hole. Seal it somewhat tight and the piston will pop right out.

 

[wasp4banger]

Reckon you need to put back in the one you got out and re-bleed it. Hydraulic pressure is probably the best bet to get them out. Just the freest one comes out first. I've put a large spanner in to stop the piston from coming right out, then the others might be pushed out by the hydraulic pressure. Chose a spanner size to get the gap right, just keeping the pistons from popping right out.
Once they are all almost popping, it is easy for there to wiggle them out.

Hope this works.

 

[shark4465]

if you have a grease gun that works also