Installing Steering Gear - Four-Wheel Drive

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Installation is performed in reverse order. It is essential to observe the following points while doing so:

Replace steering-gear fastening screws, the fit bolt on the steering shaft and the steering-wheel fastening screw whenever they have been removed. Screw threads must be clean and free of grease.
Make sure that the steering rack is not damaged (scored).
Fit the tie rods on the steering rack before installing the steering gear. Then secure the respective bellows with new clamping rings.

Fig 1: Identifying Tie Rod On Steering Gear
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Insert the steering gear and fit front-axle cross member. Secure coolant pipes on the front-axle cross member.

Fig 2: Front-Axle Cross Member Screws Tightening Sequence

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Location	Description	Type	Basic value
Hexagon-head bolt (cross member to front body) M12 x 1.5 x 30		Tightening torque	100 Nm (74 ftlb.)
Hexagon-head bolt (cross member to front body) M14 x 1.5 x 120		Tightening torque	160 Nm (118 ftlb.)
Hexagon-head bolt (cross member to rear body) M14 x 1.5 x 50		Tightening torque	160 Nm (118 ftlb.)
Plastic holder for coolant pipe (M6 hexagon-head bolt)		Tightening torque	10 Nm (7.5 ftlb.)
Support for coolant pipe (M6 hexagon-head bolt)		Tightening torque	10 Nm (7.5 ftlb.)
Support for coolant pipe (center of cross member)	is positioned on the cross member	positioned

Fix the steering gear in place on the front-axle carrier using the two fastening screws (for ease of assembly, just insert fastening screws). Fit a red plastic clip on the steering-gear pinion and join universal joint (steering shaft) to the steering gear at the correct position - steering gear and steering wheel or airbag contact unit (spring) in center position.

The plastic clip ensures that the fastening screw securing the universal joint to the steering pinion sits in the groove on the steering pinion.

Fig 3: Locating Universal Joint For Steering Gear

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Location	Type	Basic value
Steering gear to front-axle cross member, M10 x 1.5 x 45	Tightening torque	70 Nm (52 ftlb.)
Universal joint (steering shaft) to steering gear, M8 x 35	Tightening torque	23 Nm (17 ftlb.)
Tie-rod end to wheel carrier (lever), M12 x 1.5	Tightening torque	75 Nm (56 ftlb.)

Observe following notes for sliding piece and airbag contact unit!