brake caliper

[paulmceleney]

I striped my rear brake caliper this is a six pot pretech caliper I want to remove the pistons have manged to remove three on one side but the other side seem to be stuck whats the best way to free these pistons thanks

[harri183]

Can you not put the free thre pistons back in clamp it up then blow the others out with an air line. I usually take pads out and pump them out while still on the system and clamp up the free ones. You can also buy a special tool to remove them.

[paulmceleney]

They will not pump out I will try the air line , what,s the special tool called could not find anything on ebay thanks

[PAULJAC47]

Use a grease gun!

[Taffus]

http://www.ebay.co.uk/itm/Laser-Tools-M ... Sw~otWenxT

http://www.ebay.co.uk/itm/NEW-MOTORCYCL ... Sw~OVWxIKC

[lta01]

Grease gun as Paul said. Put the caliper back together if split, put pistons back in and clamp the free ones. Block the fluid inlet with washers and the banjo bolt, then apply a grease gun to the bleed nipple ( opened of course ). Grease gun can apply massive pressure, and when a piston comes out, you just have a blob of grease, not fluid all over the place.

Grease gun has never let me down, even on badly rusted pistons.

Be sure to very thoroughly clean out the caliper holes, tubes and threads before re-assembly.

[paulmceleney]

I have decided to take in to pretech for a service new seals tryed for hour to day only managed to get one out and the seals need replacing so might as well get them to do it for me ,thanks for the replies plus ten hours trying to bleed it wasted time