Cannot get Rubber Dust Boot on Caliper
 

Wife's 2013 Audi Q5 Premium Plus with Brembo style calipers had a problem with right side not releasing back so it was eating the inside pad. Went to change pads and noticed the caliper hanging up so I wanted to rebuild the caliper with New Pistons, inner seal, and dust shield. I has 42mm pistons and there are 4 per caliper. I ordered the complete kit which includes pistons, inner seal, and dust shields for 42 mm pistons, which are anodized aluminum. Raybestos Kit WK3479 for Brembo brakes. the Problem I am having is the pistons seem awful hard to push into the Caliper and I cannot get the dust shield to stay in the ring opening around the piston opening. The shield has a wire band inside the boot I guess to hold it down into the outer opening but I get 1 side of the rubber boot in and when I try and push in the other it pops out!!! I am 67 years old and have been doing brake jobs, rebuilding Calipers and Brake cylinders for over 40 years and NEVER experienced such a PITA caliper to rebuild? I could rebuild 25 calipers of Mercedes, Toyota, Ford, VW in the time I spent Fu%#I*^G around trying to get this dust boot on. I would appreciate any help getting this boot on and WHY the piston seems so hard to install. Other brand calipers have piston smoothly slide in and out and the boots just pop in and you are done! WHAT is the deal anyways with AUDI putting this special Brembo Caliper on the 2013 Audi Q5 Premium Plus for 1 year. The cost is Ridiculous to Replace New and even the rebuild kits for 1 O-ring, seal & rubber dust boot. I paid $34.89 for this kit. PLEASE HELP - I don't want to rip any more rubber boots, the left side brakes are fine, so I wasted this side's rubber dust shield.

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Another
 

I just wish the outer dust shield would pop in this easy? No way it will pop in like how he does it!

This doesn't show re-assembly of the Audi 2013 Raybestos/Brembo repair kit caliper on installing these PITA dust shields. I have read some where they make a special tool to sit on top of shield and pus it down on with a press or clamp?

Well, another piston and inner seal with Rubber dust boot came in today! Evidently the first caliper kit that came in was for a 40mm piston so.....002mm smaller does make a BIG difference in the dust boot and also the inner seal for the piston. After changing them out the piston now moves in and out PROPERLY for the inner seal to keep the brake fluid from coming out ALONG WITH AN EASY INSTALL OF THE RUBBER DUST BOOT. All is good now. I assumed the last vendor sent me the correct rebuild kit but.............I also told him for the 42mm pistons!