[rsouthern]

Have multiple Goldwings, but having issues with my 1980.
Need some assistance from the experts.

Brakes were very spongy and not effective.

Rebuilt both calipers:

1. Removed and cleaned caliper
2. Honed caliper
3. Cleaned piston
4. Replaced o-ring and pads
5. Rebuilt main master brake cylinder
6. Bleed both calipers utilizing suction bleeder at caliper
7. Worked well to start with a little spongy feel
8. Over night, the caliper totally leaked empty.
9. Ordered new caliper pis
10. 
    question: Will honing out the caliper cause leaking? Original caliper
11. Do I need to replace the caliper, if available? Where can I find any NOS units?

 

[david_root2000]

The seal is between the seal and piston. Honing is not needed..

 

[DaveO430]

If the piston is clean & smooth and the seal groove is clean & the proper seal it shouldn't leak.

 

[Bryanlj]

Honing is not a good idea but shouldnt cause a leak, more likely seal was damaged fitting the piston

 

[rsouthern]

If the piston is clean & smooth and the seal groove is clean & the proper seal it shouldn't leak.

The piston and caliper had some rust. Cleaned well, cleaned seal grove, new seal. Ordered new piston and new seal. Hope this will work