trying to fit new discs an pads on 55 astra?

if rears you need to wind piston back in!

k
June 2011

Take lid off the brake fluid top up 1st .Open bleed screw of the caliper (soak in wd40...some are made of chocolate !)If the piston has 2 holes on the front,then a piston retractor is used to screw it back in (circlip pliers can be used to turn/push it in). If no holes in piston , it just pushes back in (a piston retractor is used again) or if you are a tight arse,then put old pads back on and using a big screwdriver or other lever ,lever against pads and piston will retract slowly in,pushing brake fluid out the bleed screw. Close bleed screw and hopefully you will not need to bleed air from system

d
June 2011