you will need a G-clamp or similar to push the pistons back in.
After lifting the caliper (as per previous instruction) remove one pad and use the remaining one as a spacer for pusing the piston back in. It should be flush with the surface. This is also a good time to check for perished rubber boots.
once the pistons are pushed back just reverse the removal process to install new pads.
Note:
when pushing the pistons back the fluid in the brake reseviour will rise ! Keep an eye on it, drain if necessary.
Re fluid change.
If your car didnt have one in the last two years its probably a very good idea to flush the whole system. If you are uncertain, get a pro to do it, use DOT4+ (unless DOT5 fluid has been installed already in your car, its not compatible with DOT3,4,4+). Watch him do it, and next time do it yourself.
Lastly.
Follow the instructions how to bed the pads in. there are few different schools of thought here.
1. Gently does it for the 200kms.
or
2. (from
Wilwood brake pads website )
Once the brake system has been tested and determined safe to operate the vehicle, follow these steps for bedding of all pad materials and rotors.
1. Begin with a series of 8-10 light stops from approximately 30 MPH down to 15 MPH allowing 20-30 seconds for cooling between each stop.
2. Progress to series of 8-10 moderate stops from around 45 MPH down to 30 MPH allowing the 20-30 second cool down period between each stop.
3. Proceed with a series of 8-10 hard stops from 55-65 MPH down to 25 MPH allowing 20-30 seconds of cool down time between each stop.
4. Drive at a moderate cruising speed, with the least amount of brake contact possible, until most of the heat has dissipated from the brakes. Avoid sitting stopped with the brake pedal depressed to hold the car in place during this time. Park the vehicle and allow the brakes to cool to ambient air temperature.
or
3 from
Pagid USA website
Personally I used the Wilwood brake in process in 3 of my road cars with no adverse effects, although I must admid I stopped each sequence of stops after the pedal felt spongy and brakes smelled like they were ready to burn (usually 6~7 stops).
Good luck.
