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Decided to tear apart old brakes

  • Thread starter Thread starter Witt
  • Start date Start date
W

Witt

Guest
This was my extra pair of brakes that werent working so great and since its too cold out to ride I decided itd be a great time to rebuild them. Ive looked up everything on how to do a proper rebuild but Im not sure if the pistons or calipers are in too poor of a condition. When I was removing a piston it seized and air was leaking from around the piston. There are pictures of the two pistons attached so let me know what you guys think.

The caliper also has a small amount of corrosion and clusters of small dimples on the surface. The cluster are mostly toward the bottom and not near the seal. Couldnt get a good picture of them but Ill try again.

The bike is a 1979 GS750E with dual front calipers. Thanks.

http://i951.photobucket.com/albums/ad357/browettc/IMG_3235.jpg
http://i951.photobucket.com/albums/ad357/browettc/IMG_3236.jpg
 
Those pistons are junk. Time for new ones.

Clean out the caliper really well including any corrosion under the seals. For the sliding pins, use special caliper grease, commonly available at auto parts stored.

Good job on the rebuild. Keep going...
 
Today, 04:25 PM Nessism Those pistons are junk. Time for new ones.
Click to expand...

+ 1 on the junk pistons. If it is still available the OEM piston and seal kits are much better than the aftermarket ones from what I have heard. As Ed said be sure to clean out the grooves under the seals and dust boots, if your pistons looked that bad I am sure the grooves will need a good cleaning as well.
 
+1 on the OEM pistons. On the fische there is a selection for #1, which will include the piston and rubber boots.:)
 
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