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Article And Photos By: Daniel Donley
www.pandemoniumcustomchoppers.com
have shown you in past articles how to rebuild calipers and master cylinders. This month I am going to go over some common issues with brake systems, because you will eventually come across these issues; it is just a matter of when. bleeding the brakes: So, you are trying to bleed your brakes and for some reason it is just not working and you’re ready to pull your hair out. Well, before you do that, here is a list of some common issues you may have when trying to bleed the brakes to help narrow down the problem.
Bleeder screw passages are corroded and plugged.
18 March ‘18
- CYCLE SOURCE MAGAZINE
Replace or clean bleeder screw, also add a bleeder cap
Rubber brake lines over time can collapse inside and get plugged; inhibiting the flow of brake fluid. I like to install new brake lines on any new project.
I have seen master cylinders, new and old, leak. A quick inspection of pulling back the rubber boot to inspect for brake fluid, this is a sign of internal seals leaking. The master cylinder will needs rebuilt or replaced. Master cylinders can also leak internally. A master cylinder internal piston has 2 seals on it, one could leak to the other. How I check for this is to pump the brake quite a few times. Wait a second, then pump one time very quickly, while looking for a bubble to come up through the fluid. This is a sign of internal leaking and the master cylinder will need to be rebuilt or replaced. Your brake caliper piston could be stuck, not allowing fluid into the caliper.
