Re: Changing 156 front pads
Did my fronts, last Saturday on my 2.5 V6 S3
Changed over to vented groved discs with Green Stuff Pads.
It's a 19mm spanner for the Caliper and a 12mm spanner for the disc retaining bolt.
Take a note (or a dig picture) of the position of the pad retaining spring, cos it's a bit of a **** to get back in place (pliers and rubber handle end of a hammer to hold it in place)
The best method I found for pushing the cylinder back was to push inside the cylinder cup with the rubber handle of a hammer whilst turning the cylinder with water pump pliers. It took a while but I eventually got it back to a 61mm gap which was what i required for pad and disc thickness.
Measure caliper gap before you start to make sure it is moving in the right direction.
Have a syringe handy for extacting brake fluid out of the resovior, as the level will rise when pushing the cylinder back.
Loads of Coppaslip on the sliders and a healthy smear on the back where the caliper touches the pad (stops that squealing)
Greenstuff fronts dont have wear sensors so cable tie the wires safely out of the way.
Don't do it the week before your MOT is due (as I did) unless you do loads of mileage (as i don't) cos the set up i've got takes a bit of bedding in.
Hope this helps
1999 156 2.5 V6 Sport Pack 3 (190)
2004 GT 1.9 JTDm (150)
2007 Brera 2.4 JTDm SV (200)
2011 Guilietta 1.4 TB Multiair (170)
1970 VW T2 Early Bay (50)