As part of our series on rebuilding the rear master cylinder for the rear-disc-brake equipped CX bikes – CX500EC Sports, CX650ED Eurosport, CX500 Turbo and CX650 Turbo – we are looking at disassembling a unit today:
Taking a closer look, we can see the bore diameter on one side – 14mm:
There’s an actuating rod that connects the brake lever to the master cylinder – here looking rather rusty:
Here’s the end that connects to the brake lever:
Heading around to the other side, we have on this one “17A1”:
Attaching the master cylinder to the reservoir, we have two (rusty) screws:
Looking closely, there’s a dot on the screw heads – which suggests it’s a JIS screw, as far as I’m aware:
Removed:
When lifting the plastic 90-degree bend away green fluid leaked out… probably long overdue for a change:
There’s an O-ring – size pending:
Looking in:
Looking back at the wider picture again now that we have removed the reservoir tube:
The rubber boot should pull back easily:
The rubber boot should slide down the rod:
…which allows you to see the circlip holding the assembly together:
