FRONT BRAKE CALIPER REBUILD
Ok, I got stalled out on my master cylinder rebuild, but not to be dissuaded, I have other parts for the front brake that needs rebuilding. So....on to the caliper. The unit on this XS2 is more complex than on my 77D, this unit is a two piston caliper that squeezes the disc from both sides versus the single piston caliper on my 77.
The first thing to do is remove all the bolts holding the two half’s together and separate the two sides.
Once you split the halves you can remove the seal from the brake fluid passageway, and pull the disc pads out.
Next up, remove the pistons from the calipers. These babies were STUCK! I worked for about an hour on removing them. I sprayed penetrating oil on the front and also inside the fluid passageways so it would get behind the pistons to help dissolve deposits on the inside also. Then I cycled back and forth, tapping on the pistons with the plastic handle of a screwdriver and blowing compressed air in the line openings. Be VERY careful if you use compressed air to remove these cylinders, they can go from being stuck to becoming projectiles in seconds flat!
When I blew air into the calipers, I placed them open side DOWN over some towels, so that when they come out they just hit the work bench.
With the pistons out, now the seals can be removed.
All the components laid out for inspection and cleaning.
Next up, clean up and rebuilding.