Front
WM 463619 Removing and installing front disc brake pads
Preliminary work
Raise the vehicle.
Remove wheel.
Removing
Removing front brake pads
The core of the warning contact line must not be left exposed! It does not matter if the insulation is worn!
If necessary, remove a little brake fluid from the expansion tank by suction to prevent overflow when the disc brake pad is pushed back!
1. Remove fastening screw at retainer pin. Then screw in auxiliary screw M8. Hold down expanding springs with a screwdriver -see illustration- and remove retaining pin.
2. Remove warning contact line from brake caliper and expanding spring. Remove warning contacts from the brake disc pads.
3. Piston resetting fixture (replaces P83) NR.144, must be fitted on the brake caliper between the disc brake pads in order to push the pads back evenly -arrows-.
4. Remove disc brake pads.
Installing
Installing front disc brake pads
Warning:
Danger of accidents if old parts are fitted on brake caliper.
Fit new expanding spring, new retaining pin and new retaining pin screw on the brake caliper.
Warning:
Danger of accidents if brake pads of the wrong quality are installed.
Use only the type-specific brake pads listed in the Porsche Spare Parts Catalogue.
Do not grease the back of the disc brake pad!
The new disc brakes must be clean and free of grease!
Check disc brakes for wear.
The core of the warning contact line must not be left exposed! It does not matter if the insulation is worn!
Use a new repair kit!
Observe tightening torques.
1. If necessary, push brake piston back into its original position using the piston resetting fixture (replaces P83) NR.144.
2. Fit new disc brake pads.
Information:
Make sure that the retaining pin is inserted in the correct position! The flat side surfaces prevent the retaining pin from twisting in the brake caliper.
3. Install expanding spring. Center the retaining pin in the bore with the M8 auxiliary screw. To do so, press retaining pin back with auxiliary screw and push retaining pin through. Remove auxiliary screw and fit fastening screw at retaining pin with specified tightening torque!
4. Install warning contact line at disc brake pads and expanding spring -arrows-. The cable guide in the expanding spring must be at the bottom!
5. Position disc brake pads by operating the brake several times.
6. Check the brake fluid level and correct it if necessary. The brake fluid level must be between the -MIN/MAX marking-.
Subsequent work
Subsequent work
1. Mount wheel.
Information
Bedding in the brake pads
New brake pads require a bedding-in period of approx. 200 km! Only then do they achieve their best friction and wear coefficient! During this period, the brakes should only be subjected to full stress at high speed in emergencies!