Technical Rear brake caliper rebuild

Currently reading:
Technical Rear brake caliper rebuild

BrianMcL

Member
Joined
Dec 20, 2009
Messages
662
Points
132
Hi everyone,
I was changing my rear pads and discs at the weekend and noticed that both rubber seals were damaged.

The passenger side caliper was solid and I couldn't get it to budge, even on a bench so I've just replaced it with one from ECP for £75 after discount.

The driver's side wasn't too bad and wound back OK but the rubber seal's destroyed.

Has anyone tried to repair one?

The replacement rubbers are about £12 on ebay and it's about the same for the piston but I've never tried anything like that before.
 
Hi everyone,
I was changing my rear pads and discs at the weekend and noticed that both rubber seals were damaged.

The passenger side caliper was solid and I couldn't get it to budge, even on a bench so I've just replaced it with one from ECP for £75 after discount.

The driver's side wasn't too bad and wound back OK but the rubber seal's destroyed.

Has anyone tried to repair one?

The replacement rubbers are about £12 on ebay and it's about the same for the piston but I've never tried anything like that before.


Normally not too bad to do but you need to strip the old one first and make sure the bore of the cylinder is not corroded or scored. Other tip is to apply a small amount of clean brake fluid to the seals and piston before you assemble them. This lubricates them and helps prevent damage during assembly.


Robert G8RPI.
 
The driver's side wasn't too bad and wound back OK but the rubber seal's destroyed.

Has anyone tried to repair one?
The replacement rubbers are about £12 on ebay and it's about the same for the piston but I've never tried anything like that before.

Did such a repair long time ago. The problem experienced was in fitting the dust cap.
After placing one end of the cap in the cylinder groove, it slided out during placing of the plunger.
To let it stay in place I used a peace of plastic cutted out of a hairspray aerosol, lengthwise slitted, forming a funnel to guide the piston in place.
 
Last edited:
Back
Top