I dunno what your symptoms are, but if you want to keep your brakes working well and avoid binding/warped rotors, I recomend the following @ every brake pad change:
Inspect caliper bushings. If without defects/noticable wear, run over wire wheel or use wire brush to get all crap off them.
Clean out rubber bushing guides on caliper with rag/brake cleaner. Re-apply brake lubricant, i.e. silicone brake lube/paste onto bushing and inside of bushing guides.
Andrew
PS: IIRC, it's a T45 that you need to do the caliper bushing pins. Good luck!