06-03-17, 06:02 PM
Update.
I opted to go for the reverse bleed method using the syringe from the caliper back to the reservoir. A few air bubbles came through nothing massive. Then bled it back in the conventional way, pumping the pedal 5-10 times, cracking the bleed nipple and so on. Got a few extra bubbles that way then once it ran clear nipped everything back up and still no joy.
Then I removed the caliper mounting bolts and gave it a pump and it was solid feedback....... I replaced the rear mounting bolt (12mm) still good. Then I go to re fit the front caliper mounting bolt (14mm) and it all goes soft again. From this I can gather that the system is air free but not sure what would cause this. The front mounting bolt doesn't spin in by hand like the rear one but requires next to no effort with a ratchet so I do not think it has cross threaded.
I opted to go for the reverse bleed method using the syringe from the caliper back to the reservoir. A few air bubbles came through nothing massive. Then bled it back in the conventional way, pumping the pedal 5-10 times, cracking the bleed nipple and so on. Got a few extra bubbles that way then once it ran clear nipped everything back up and still no joy.
Then I removed the caliper mounting bolts and gave it a pump and it was solid feedback....... I replaced the rear mounting bolt (12mm) still good. Then I go to re fit the front caliper mounting bolt (14mm) and it all goes soft again. From this I can gather that the system is air free but not sure what would cause this. The front mounting bolt doesn't spin in by hand like the rear one but requires next to no effort with a ratchet so I do not think it has cross threaded.