1. The Girodisc 2-piece rotor will replace the original equipment rotor directly. There is no need for modification or any special equipment. Do not loosen or tighten the hardware on the new disc.
2. If you are not familiar with, or confident that you understand how to replace your rotor. Refer to the factory service manual, or have a certified mechanic perform the installation.
3. The general procedure is to simply unbolt the caliper from the car, remove
the OE rotor, and replace it with the 2-piece rotor. Place the caliper on the
disc and tighten the caliper bolts to the upright with the correct torque. The
correct torque value will be available from the vehicle manufacturer.
There is no need to loosen any hydraulic fitting. Do not loosen the brake lines during this installation.
4. Install the rotors according to the directional arrow on the aluminum bell. The arrow should point to the front of the car. The direction of the vanes in relation to the direction of rotation of the rotor is very important. The rotor will not function properly if the vanes are not facing the correct direction. See the service assembly sheet for vane direction illustration if there is any question.
The purpose of bedding the discs is to allow the pad and disc to mate and produce a layer of pad material on the fresh disc. This must be accomplished while also bringing the system into normalized use without harming the system with excessive heat while new.
· While the vehicle is stationary, pump the brake pedal to ensure pad
contact. The brake pedal should feel firm, and have standard travel.
· Drive the vehicle cautiously a short distance to test fit and function.
· The brakes should be smooth, with no vibrations, judder, etc.
· Drive the vehicle to a remote area and perform at least 20 brake applications of 3-second duration. Use light deceleration with varying starting speeds. Stoplight traffic can work well for this.
· The purpose of this procedure is to gradually increase the temperature in the components without inducing thermal shock, and to mate the brake pad and rotor friction surfaces. The pad must deposit a layer of friction material on the rotor.
· After the repeated stops, drive the vehicle for several miles (on highway generally) with little or no braking in order to adequately cool the components.
· While on highway, safely perform 10 more braking applications using light to medium pressure for periods of about 5 seconds, with at least one minute between applications for cooling.
· After the above process is completed, the system is ready for normal use.
The bedding procedure is critical for the brake rotor to perform properly. If the procedure is not followed, the rotor may not deliver the full benefits of the system. The rotor is delivered with a zinc plating, and this plate must be removed during the bedding process so that the pad material may deposit and mate with the rotor surface. A properly bedded rotor will avoid warping and hot spot development.