So doing the obligatory clean on the spare set of calipers for my bandit, while typical brake cleaner is fine for cleaning the discs, pistons and calipers internals - its hopeless at cleaning all the caked on brake dust/road grime on the caliper body. I have always thought, there must be a spray/brush liquid solution that will dissolve the caked on brake dust and road grime, so we don't need to be getting out the wire brush and pick for the seal grooves.
After a bit of research for the outside at least, what we need is a solution/fluid that will react with the iron in the brake dust. Examples I have seen on youtube are for cleaning the brake dust of wheels, but I think it should do the same job on calipers aswell. The idea is you spray it on and leave it to soak for a few minutes, after which time it changes color (usual pink or purple). Then you simply rinse it off with water and for more stubborn instances, agitating with an toothbrush rinse and repeat if as required.
Id like to hear back from any of your guys that have found a product that works well for you? What I have been looking for so far is car wheel cleaner and iron remove like -
- WonderWheels Colour change (acid free) wheel cleaner - amazon