re: DIY: Servicing your Motorcycle's disc brake I recently overhauled my front disc brake on my bike. Here are some thoughts and advice after completing the exercise:
- Conventional brake bleeding is slow, clumsy, tiring and unreliable.
- Reverse bleeding is great! It's the opposite of all the negatives I just listed above. It takes some preparation and tools but it's absolutely worth it. It take just a few minutes to reverse bleed brakes.
- If there is sludge in the brake master cylinder, then flushing the old fluid with new will not get rid of the sludge. The sludge is a result of brake fluid absorbing moisture and deteriorating to become sludge.
- The only way to get rid of sludge is to disassemble the master cylinder completely and clean all the parts with brake cleaner and a brush.
- If a major disassembly is involved, replacement of all seals is recommended.
- As the OP recommends, use brake caliper grease for the caliper pins.
- Use silicone-based brake seal grease before assembly of the master cylinder and caliper pistons. It makes your life a lot easier.
- Don't overfill the master cylinder. An air gap above the fluid is necessary to prevent air lock.
- The rubber parts in a brake system can be quite delicate. Handle carefully and remember not to use sharp tools that could cut, tear or pinch the rubber.
- A lot of metal parts in the brake system are made of aluminium. Be careful not to over-tighten screws and bolts and risk stripping threads.
- USE THE RIGHT TOOLS FOR THE JOB. This is a safety issue. Don't even attempt a brake related job without first ensuring you have the right tools. Using the wrong tools could mean broken or damaged parts, under-tightened parts, damaged screws or bolts that can't be removed easily later, etc. |