993 TT Big Red Brakes

[tmcalabro]

Does anyone know the trick for removing the dust boot on Brembo Big Reds?

[North Coast Cab]

I use one or two small straight blade screwdrivers to "pry" the boot up. There is a metgal band inside the rubber boot, just be careful not to mar the outer surface.

[tmcalabro]

So there is no clip to remove, you just have to work it around the piston?

Thanks

[davisriley]

No, no clip. The outer band, the side at the caliper has a metal ring in there that holds it's shape and pressure fits it into the bore, and in the center, around the piston, the seal just streches a little and fits into the channel at the top of the piston.

[tmcalabro]

I guess that based on the last post, I am looking for the proper way to remove the press fit metal ring. Does the "two screwdriver" method used in prying the metal band up? If so, sorry, I thought that was used for working the boot around a piston that is being inserted.

I have to replace a dust boot that is torn.

[davisriley]

Sorry, I don't know the answer to that. I actually got my calipers apart, and put them together, so don't know the best way to pull the seals. I'm sure someone who has done one will chime in.

[Bill Verburg]

there are 2 seals an inner pressure seal and an outer dust seal

here's a piston


here's a dust seal



here's the seal installed, work it in by hand or watha plastic ladle




there was a more complicated older design that used a ring, it looked like this

[tmcalabro]

Bill,

Seeing the picture of the seal by itself made things very clear, thank you.

One other question if I may. The old seal was firmly in place, when I press the new one in it is quite easy to pull out. I made sure the seal and seating surface were clean. Should this be expected?

Thanks again,
Thom