Suspension Brakes and Steering General

GENERAL

400-1

Front suspension

400-2

Rear suspension

400-3

Steering

400-4

Braking system

400-5

Wheels and tires

400-7

Alignment

400-8

a.

TROUBLESHOOTING

400-8

b. c

Suspension troubleshooting

400-8

d.

Diagnostic inspection

e.

and testing (suspension)

400-9

Tire wear

400-9

t.

Isolating pulling symptoms 400-10

Vibration 400-10

Braking system troubleshooting 400-12

Brake diagnostic checks 400-12

Brake noise 400-12

TABLES

Suspension Specifications 400-3

Steering Specifications 400-4

Braking System Specifications 400-6

Rim and Tire Sizes 400-7

Suspension, Steering and

Alignment Troubleshooting 400-11

Brake System Troubleshooting 400-13

GENERAL

This section covers general information for front and rear suspension, the braking system, and the steering system. Diagnostic and troubleshooting information on these systems is at the end of the section.

The Porsche 911 Carrera suspension and steering systems are engineered to provide a compromise between taut, responsive handling and ride comfort. Although the front and rear suspension assemblies are independent subsystems, they work together to achieve Porsche's overall combination of handling and comfort.

The suspension has no lubrication points. All suspension joints are permanently lubricated. To maintain good handling and reliability, carry out periodic inspections as listed in 030 Maintenance. The main items needing attention are:

• Front wheel bearings, checking, adjusting and repacking.

• Wheel nuts, checking tightening torques.

• Constant velocity (CV) joint boots, checking for damage.

• Tire pressures, checking and correcting.

Front suspension and steering

Front suspension and steering

Torsion Bar Suspension

1. Top strut mount

2. Front suspension strut

3. Front brake rotor

4. Front brake caliper

5. Steering tie rod

6. Steering column universal joint

7. Steering rack

8. Stabilizer bar

9. Front control arm

10. Front suspension subframe

11. Ball joint

12. Torsion bar

1. Top strut mount

2. Front suspension strut

3. Front brake rotor

4. Front brake caliper

5. Steering tie rod

6. Steering column universal joint

7. Steering rack

8. Stabilizer bar

9. Front control arm

10. Front suspension subframe

11. Ball joint

12. Torsion bar

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