Front brake caliper will not retract
Well that's not a lot of information to go on as it can be a lot of problems so will have to be rather broad and general here and hopefully your problem will fall into one of there or at least point you in the right direction.
.1 the caliper is a hydraulic system meaning it needs fluid to activate it. Check the fluid lines and make sure there is break fluid flowing with some pressure,, (dripping is a no no). This can be done by a process known as bleeding. If your not familiar with it, simply disconnect the fluid line and step on the brake to make sure fluid comes out.
2.) this is more than likely the problem. The caliper depends on the piston to contract or retract. The piston has seals and a boot rubber. the get worn with age an use and it breaks. Dust particles (from the disc pads) often get in these breaks and wedges the piston. To fix this you will need caliper kit for your model car and break system. The process is simple, remove and take apart the caliper (labeling and taking notes to make reassembly easier). remove the piston and clean the piston and the shaft toughly using warm soapy water , contact cleaner and WD40, If necessary re-grease the piston and chamber of in some cases sue break fluid or leave dry depending on the type of caliper. (don't worry you will see whats being used when you take it apart). reassemble the caliper using the new seals and boots provided in the kit.
3.) the simplest fix is to replace the caliper.
4.) remember to bleed the breaks as described in (1).
keep me posted
Based on the information given I have given my suggestion. Please note
that the assumption can wrong as I'm not there in person to have a fist
hand look, I must suggest you get it professionally looked at.
Dec 27, 2012 |
2008 Kia Spectra5