Brake Problems with CBR250R

I've seen galore posts astir radical losing brake unit successful their cbr250r's. If you're facing this issue, present are immoderate communal steps to troubleshoot:

Check brake lipid levels: If the lipid is low, refill it and bleed the strategy to region immoderate trapped air. Make definite you're utilizing the close oil, specified arsenic DOT 4, oregon immoderate your shaper recommends.

Look for leaks: If the brakes inactive consciousness spongy, inspect the strategy for leaks, particularly successful the brake lines that are exposed to imaginable damage. If you find immoderate leaks oregon if the lines are damaged and expanding nether pressure, regenerate them. Afterward, refill the lipid and rebleed the strategy to spot if that resolves the issue.

Check the maestro cylinder: If some the brake fluid level and lines are fine, see replacing the maestro cylinder. While repair kits are available, the maestro cylinder is simply a portion that typically doesn?t neglect often. If it does, it's usually amended to regenerate it entirely.

Check the ABS system: If everything seems cleanable but your brakes are inactive spongy, effort removing the ABS fuse and bleeding the strategy again. If this helps, you mightiness person an ABS issue. If you inactive don?t regain afloat pressure, you whitethorn privation to look into my experience?this is wherever things got tricky for me.

I bought a used, older CBR250R and experienced a akin brake unit issue. There were nary ABS informing lights, and the rear brake worked fine, but the beforehand brake kept losing unit daily. After checking everything, I suspected the maestro cylinder was the occupation since the erstwhile proprietor had swapped retired the banal Nissin maestro cylinder for a ByBre unit. I replaced it, but to my surprise, that didn?t hole the issue.

I planned to overhaul respective parts of the bike, truthful portion it was afloat disassembled for inspection, we checked the brake lines astatine the ABS modulator. That?s erstwhile we discovered that 3 retired of 5 brake lines were moving dry. At first, I thought the lines mightiness beryllium clogged due to the fact that the erstwhile proprietor hadn?t maintained the motorcycle good and had utilized DOT 3 fluid alternatively of DOT 4, which had caused the brake fluid to crook black.

Upon person inspection, we realized the lines were fine, and the occupation was with the ABS modulator itself. Many radical told maine it wasn?t repairable, but luckily, I had a bully mechanic person who had repaired them earlier and offered to try. When we opened it up, we recovered the issue: the eccentric centrifugal that rotates the pistons to unfastened and adjacent the lipid lines was severely rusted, on with the pistons themselves.

Fortunately, we recovered a donor ABS module and were capable to salvage astir of the parts. The body, solenoid, and connector from my archetypal module were inactive fine, truthful we didn't request a implicit replacement. While we could person replaced the circuit board, it wasn?t damaged. Now we?ve reassembled everything, and investigating is inactive ongoing.

Finding a bully spare replacement was hard since these parts aren?t commonly sold, and a caller modulator outgo astir ₹23,000?about the aforesaid terms I paid for the full bike! So, it didn?t marque consciousness to put that overmuch successful a azygous part. I cognize tons of you volition remark that it is not repairable but I person taken a hazard and I?ll update you erstwhile investigating is implicit and I corroborate whether the ABS functionality is restored. I anticipation this helps idiosyncratic facing a akin issue! Photos for the aforesaid are attached below.