Hi All,
I have an issue with the front brake caliper, it is a standard lockheed system on a Mk3. I replaced the caliper seals, the pistons looked OK and I have bled the system using a clear plastic drain line, master cylinder high up and fairly level on the bars, no bubbles showing and have used 3 reservoirs of fluid trying to ensure no air. I don't believe there is air in the lines. However I still have a spongy brake feel until I pump it at least twice at which time the brake is normal and strong. This happens after the brake is left standing for more than a minute or so between applications.
I have had this happen on the move - pad "knock off" as some would have experienced before floating discs where the unit needed a pump along the straights before application at the corner due to the pads sitting back in the caliper. This is very similar but the bike is not on the move and it seems that the pistons are sucking back or something giving excess clearance after that minute or so standing.
Any thoughts or previous similar experiences anyone?
I have an issue with the front brake caliper, it is a standard lockheed system on a Mk3. I replaced the caliper seals, the pistons looked OK and I have bled the system using a clear plastic drain line, master cylinder high up and fairly level on the bars, no bubbles showing and have used 3 reservoirs of fluid trying to ensure no air. I don't believe there is air in the lines. However I still have a spongy brake feel until I pump it at least twice at which time the brake is normal and strong. This happens after the brake is left standing for more than a minute or so between applications.
I have had this happen on the move - pad "knock off" as some would have experienced before floating discs where the unit needed a pump along the straights before application at the corner due to the pads sitting back in the caliper. This is very similar but the bike is not on the move and it seems that the pistons are sucking back or something giving excess clearance after that minute or so standing.
Any thoughts or previous similar experiences anyone?