Trooper LTD 4WD V6-3.5L (2002)
Brake Rotor/Disc: Service and Repair
Front Disc Brakes
Replacing Brake Rotors
When installing new brake rotors, do not refinish the surfaces. These parts are at the correct level of surface finish.
Refinishing Brake Rotors
Accurate control of the rotor tolerances is necessary for proper performance of the disc brakes. Machining of the rotor should be done only with
precision equipment. All brake rotors have a minimum thickness dimension cast into them. This dimension is the minimum wear dimension and not a
refinish dimension. The minimum wear dimension is 24.60 mm (0.969 inch). The minimum refinish dimension is 24.97 mm (0.983 inch).
When refinishing rotors, always use sharp cutting tools or bits. Dull or worn tools leave a poor surface finish, which will affect initial braking
performance. Vibration dampening attachments should always be used when refinishing braking surfaces. These attachments eliminate tool chatter and
will result in better surface finish.
After refinishing, replace any rotor that does not meet the minimum thickness of 24.97 mm (0.983 inch). Do not use a brake rotor that will not meet
the specification.
Minimum wear dimension: 24.60 mm (0.969 inch)
Refinish dimension: 24.97 mm (0.983 inch)
