Front Brake Disc Replacement

Removal





1. Remove front wheel. Open the plug connection on the wheel carrier (arrow) and pull out the plug for the brake pad wear indicator. Unclip the electrical wire on the spring strut.
2. Undo the holder for the brake hose/brake line on the wheel carrier. Undo the brake caliper on the wheel carrier and place or secure it in a suitable place. (Do not open the brake hydraulics.)
3. Take off the brake disc after removing the countersunk screws. If a stuck brake disc cannot be removed by gentle tapping with a plastic hammer, evenly screw hexagon-head bolts into the two M8 threads of the brake disc, thereby pressing off the disc.

Installation
1. Check that all parts are in perfect condition and replace them if necessary.
2. Clean the levelling and centering surfaces on the brake disc and wheel hub. Then apply a very thin coat of Optimoly TA to the centering surface on the wheel hub.
3. Fit the brake disc.
The brake discs on the left and right of the Boxster S are different.

Note for Boxster S only
Do not confuse the right and left brake discs during assembly (Boxster S).





Distinguishing characteristic: Involute shape and spare part number (SP No.). The flat surface of the brake discs is marked with R = right or L = left.
Spare part on left-hand side third group number is odd
Spare part on right-hand side third group number is even
Example:
SP No. Left brake disc: 996.351.405.01
SP No. Right brake disc: 996.351.406.01

4. Fit the brake caliper.
Tighten the new screws of the brake caliper with 85 Nm (63 ft. lbs.). Ensure that the brake hose and brake line are in a perfect position.

Note Replace the brake caliper fastening screws after each removal.