Matnetik
Active Member
Hey all,
I have a 1974 CB360 and when I bought it, it had a master cylinder from what I believe is a goldwing. I recently replaced the caliper assembly along with a new stainless steel brake line. After hours of bleeding and running a 12oz bottle of fluid through, the brakes still felt soft and I had to squeeze them so much just to engage. I assumed it was the master cylinder to I replaced it with the same one. After going through the same rigorous process again with the new master cylinder, I’ve had no luck. Brakes feel the same. I also tried the zip-tie over night, tried it for a few days and nada. Also tefloned the bleeder and banjo bolts and still...soft brake.
Few things I have noticed, I don’t have a disc brake cover, now I have done some research and found some others had an issue with this and how it angled the caliper on the disc causing uneven wear and pressure. Could this be the cause of the lack of braking power? I’ve tried to look up the diagram for assembly but can’t find much on that, maybe a washer could do the trick? Not sure where it goes, on the inside of the fork in between the privet arm of the caliper?
Or could it be that a CB360 uses a 14mm master cylinder and I have a 16mm? Although I thought the bigger the piston the less travel the lever has to do, so in theory wouldn’t it start applying pressure sooner than if I used a smaller piston?
I am 1 billion % sure there is no air in the line, bleed brakes a million times on so many bikes before but I just can’t just this one right. Any help would be beyond appreciative!! Here are a few pictures below -
I have a 1974 CB360 and when I bought it, it had a master cylinder from what I believe is a goldwing. I recently replaced the caliper assembly along with a new stainless steel brake line. After hours of bleeding and running a 12oz bottle of fluid through, the brakes still felt soft and I had to squeeze them so much just to engage. I assumed it was the master cylinder to I replaced it with the same one. After going through the same rigorous process again with the new master cylinder, I’ve had no luck. Brakes feel the same. I also tried the zip-tie over night, tried it for a few days and nada. Also tefloned the bleeder and banjo bolts and still...soft brake.
Few things I have noticed, I don’t have a disc brake cover, now I have done some research and found some others had an issue with this and how it angled the caliper on the disc causing uneven wear and pressure. Could this be the cause of the lack of braking power? I’ve tried to look up the diagram for assembly but can’t find much on that, maybe a washer could do the trick? Not sure where it goes, on the inside of the fork in between the privet arm of the caliper?
Or could it be that a CB360 uses a 14mm master cylinder and I have a 16mm? Although I thought the bigger the piston the less travel the lever has to do, so in theory wouldn’t it start applying pressure sooner than if I used a smaller piston?
I am 1 billion % sure there is no air in the line, bleed brakes a million times on so many bikes before but I just can’t just this one right. Any help would be beyond appreciative!! Here are a few pictures below -