Front suspension

Each front suspension strut assembly includes a replaceable shock absorber cartridge inside a tubular strut housing. The lower end of each strut includes the stub axle for the front wheel assembly.

The front torsion bars are mounted inside the control arms. The spring tension on the front torsion bars is easily adjustable.

The front control arms are mounted to the floor pan. Ball joints are used to connect the control arms to the strut assemblies.

Porsche 911 Front Suspension

1. Nut (M14 x 1.5)

12.

Strut cap

24.

Wedge bolt: always replace

tighten to 80 Nm (59 ft-lb)

tighten to 250 Nm (184 ft-lb)

25.

Control arm

2. Locking tab: always replace

13.

Lock plate

26.

Torsion bar

3. Plate

14.

Cotter pin: always replace

27.

Crossmember subframe

4. Bolt (M10 x 20 mm)

15.

Cover

28.

Lock washer (M12): always replace

tighten to 47 Nm (34 ft-lb)

16.

Shim

29.

Bolt (M12 x 1.5 x 85 mm)

5. Lock washer (M10)

17.

Control arm front mounting bracket

tighten to 90 Nm (66 ft-lb)

6. Support plate

18.

Washer (M10)

30.

Foam seal

7. Top strut mount

19.

Lock washer (M10): always replace

31.

Torsion bar retaining cap

8. Strut

20

Bolt (M10 x 35 mm)

32.

Torsion bar adjusting bolt

8a. Strut dust sleeve

tighten to 47 Nm (35 ft-lb)

33.

Bolt (M10)

9. Lock nut

21.

Cotter pin (2 x 25): always replace

tighten to 47 Nm (35 ft-lb)

tighten to 22 Nm (16 ft-lb)

22.

Castle nut (M10 x 1)

34.

Stabilizer bar bracket

10. Washer

tighten to 45 Nm (33 ft-lb)

35.

Stabilizer bar bushing

11. Ball joint

23.

Tie-rod end

36.

Stabilizer bar

Suspension travel is limited by rubber bump stops on the top of each strut assembly.

A stabilizer bar is mounted to the front control arms and sub-frame to help reduce body roll when cornering.

When doing any front suspension maintenance or repair, observe the following general cautions.

• Do not install bolts and nuts coated with undercoating wax, as correct tightening torque cannot be assured. Always clean the threads with solvent before installation, or install new parts.

• Do not attempt to weld or straighten the suspension struts, control arms or subframe. Replace damaged parts.

• Do not reuse self-locking nuts or cotter pins. These parts are designed to be used only once.

Rubber bumper

Strut catridge cap

Strut housing

Plastic shield

Porsha 911 Front Suspension

Rubber bumper

Strut cartridge piston

Strut catridge cap

Strut housing

Plastic shield

Dust cover

0018683

FRONT SUSPENSION STRUTS

The main components of the front strut assembly are the strut housing, the strut cartridge and the top strut mount. Each of these main components can be replaced separately. The strut housing itself should be replaced if It is damaged.

A variety of struts by different manufacturers, including Bo-ge® and Bilstein®, have been used in Porsche cars. After-market manufacturers, including Koni® and Tokico®, also offer replacement strut cartridges. The strut assembly must be removed from the car and disassembled, as described later, to replace the internal damper cartridge.

Consult with the Porsche dealer parts department or after-market supplier when deciding what replacement parts to use.

Any differences in suspension components from side to side will affect handling and stability. It is strongly recommended that struts, strut cartridges or top strut mounts always be replaced in pairs at the same time.

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