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Sep 6th 2018, 05:43 AM   #16
 
  Mar 2018
  Gig Harbor

  2008 BMW R1200GS Adventure
Quote:
Originally Posted by MarvTravis
If the caliper pistons aren't damaged, you can rebuild the calipers, after acquiring only replacement seals. Here's a pair of excellent Delboy's Garage videos detailing how to do a complete caliper build, including polishing the pistons:

One of the piston surfaces is chipped. But I ended up just cleaning and lubing everything, putting it back together, and then flushing the lines. Back on the road again now.

Got into work this morning and noticed brake fluid had dripped down from the master cylinder. Not immediately sure if that's a new leak or I left brake fluid underneath and the wind just blew it out.

I did some pretty hard test braking last night and I could have been squeezing too hard during the bleeding process.
Sep 6th 2018, 06:26 AM   #17
 Pavement Tested's Avatar
 
  Jan 2016
  Bremerton

  '08 GSX1300R, '06 GSX-R 750, '17 KTM 690 Duke
FYI, I asked the seller about those calipers.

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Sep 6th 2018, 06:30 AM   #18
 
  Mar 2018
  Gig Harbor

  2008 BMW R1200GS Adventure
Haha. I'll be damned....

It REALLY looks like the pistons are missing.
Sep 6th 2018, 08:16 AM   #19
 curve addict's Avatar
 
  Apr 2016
  Des Moines, WA

  ...1987 Yamaha FZR1000...
Quote:
Originally Posted by Didley
One of the piston surfaces is chipped. But I ended up just cleaning and lubing everything, putting it back together, and then flushing the lines. Back on the road again now.

Got into work this morning and noticed brake fluid had dripped down from the master cylinder. Not immediately sure if that's a new leak or I left brake fluid underneath and the wind just blew it out.

I did some pretty hard test braking last night and I could have been squeezing too hard during the bleeding process.
You should be able to squeeze that lever as hard as you can without any problems. Re-tighten/repair/replace as needed.
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