Noticed my mpg has been down 2 or 3 recently. Went for a drive last night and mpg dropped by about 10mpg. Seemed to feel alot of drag so I Stopped and noticed F/N/S brake was binding.
https://vimeo.com/111869581
Wasn't seized but still binding bad. Absolutely stunk, literally a split second of touching disc turned my skin yellow with a burn.
Took caliper off today to see if It was piston or sliders.
Sliders were dry and a bit dirty but not too bad
Piston dust cover/seal is a bit out of shape but still in position. It has a small slit about 2mm at the very edge where it meets the caliper (not the piston) but otherwise seems ok.
I didnt take the piston out completely but lifted the dust cover to find a small amount of rust debris. Piston was quite difficult to push back so I cleaned it out and lubed with brake fluid.
I noticed one slider boot was also swollen and deformed. (Left one)
I greased the sliders and it still seems to move reasonably freely. Not as perfect as the right one but still adequate.
All back together now, seems to be better, in fact after a drive it was the coolest disc.
As such I did the offside one too. The piston on the offside was perfect and did move a bit easier even without being lubed.
What do people think of the dust cover, should I see how it goes or get it replaced now???