Have read through the PDF document included in the first post of the below article. Everything that you need to know is there.
Article [13] - ST1300 Maintenance - Brakes- Avoiding the Pitfalls | ST1300 Articles
A close hands-on look at the Honda ST1300 braking system. These are personal observations about the things that can go wrong, why they go wrong and what can be done to keep things working sweetly. Updated April 2020 and to address more recent observations, to include information about the SMC...www.st-owners.com
The first thing that comes to mind, would be to tell you to inspect your brake system.
Yes, the slider pins can hang up and cause uneven pad wear, however, so would a failing SMC unit, which unfortunately, is all too common for these bikes, and could cause you a safety concern.
Check out the brake section, and read Mr. John Heaths article on avoiding the pitfalls of the brake system, this should get you pointed in the right direction.
Thanks Andrew I will read that and start with the calliper and work back to the secondary master cylinder.Have read through the PDF document included in the first post of the below article. Everything that you need to know is there.
Article [13] - ST1300 Maintenance - Brakes- Avoiding the Pitfalls | ST1300 Articles
A close hands-on look at the Honda ST1300 braking system. These are personal observations about the things that can go wrong, why they go wrong and what can be done to keep things working sweetly. Updated April 2020 and to address more recent observations, to include information about the SMC...www.st-owners.com
That is great Information Igofar, thank you, The rear pistons were full of crud, I polished them with some metal polish and rebuilt the rear calliper. Everything is working fine, I will order new pistons and replace them. Wiggling the SMC is solid as a rock with no movement, I replace brake and clutch fluid every two years so I should get good life out of it. I will make that check every time I replace the pads, after all, stopping is more important than going. Thank you again, I love this group, so many knowledgeable people willing to share knowledge. Cheers, and keep going far!Before you do anything, or work back to the SMC, I would do the safety inspection.
Cartoon version…spin rear wheel with one strong downward push. You should get 2-3 full revolutions with one push.
Then, ask someone to slowly rotate the rear wheel, while they are doing this, grasp the SMC bracket and press it forward towards the fork tube.
This should instantly lock the rear wheel. You should not be able to move the wheel no matter how hard you try.
If you can, your SMC has failed.
Lastly, grasp the left brake caliper and shake it forward and rearward, does it make a clanking sound? If so failed the test.
Good luck, let us know what you find.
Another suggested easily repeated check for you.I will make that check every time I replace the pads, after all, stopping is more important than going.
That's ok, I've never seen a ceratec gremlin.- there is a gremlin that has sneaked onto page 9. A tube of ceratec grease is peeping around the edge from page 12. It shouldn't be there. It snuck in when I wasn't looking.