Porshe 911 (997). Manual - part 329

Cleaning connection areas

2. Clean undersealing, adhesive residue and paint off the body connecting flanges in the marked areas

-A, B, C-

 using a hot-air gun or rotary brush. Grind the connecting flanges until bare.

Cleaning connection areas

3. Clean undersealing, adhesive residue and paint off the body connecting flanges in the marked areas

-A, B, C, D-

 using a hot-air gun or rotary brush. Grind the connecting flanges until bare.

4. Coat spot-weld flange areas with zinc powder paint.

4.1. Coat all spot-weld flange areas with zinc powder

paint.

Fitting front wheel housing and preparing for installation

Safety instructions for sharp-edged body and unit parts

ATTENTION

Danger of injury! Sharp-edge burrs on body and unit parts!

Injuries from sharp edges on body and unit parts.

• 

→ Wear protective gloves when working in the area of sharp-edged body and unit parts!

Diagnostic system: reading out fault memory and activating systems

Preparing connection areas of body for installing front wheel housing

1473

Fitting front wheel housing and preparing for installation

Drilling holes for plug welding using inert gas

1. Drill holes for plug welding using inert gas.

1.1. Drill holes (Ø = 7 mm) in areas -A- and -B- for plug welding using inert gas. Maintain spacing

between the bores as on the old part.

Cleaning the welding areas

2. Clean the welding areas

2.1. Grind both sides of the connecting flanges of the front wheel housing in the marked areas -A, B, C, D,

E, F-

 until bare using a rotary brush.

Cleaning the welding areas

3. Cleaning the welding

areas

3.1. Grind both sides of the connecting flanges of the front wheel housing in the marked areas -A, B, C, D

,E-

 until bare using a rotary brush.

Diagnostic system: reading out fault memory and activating systems

Fitting front wheel housing and preparing for installation

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4. Coat spot-weld flange areas with zinc powder paint.

4.1. Coat all spot-weld flange areas with zinc powder

paint.

Preparing reinforcement for front wheel housing for installation

Preparing reinforcement for front wheel housing

1. Prepare reinforcement for front wheel housing.

1.1. Drill holes (Ø = 7 mm) in area -A- for plug welding using inert gas. Maintain spacing between the

bores as on the old part.

1.2. Grind both sides of the connecting flanges of the front wheel housing in the marked areas -B- and

-C-

 until bare using a rotary brush.

2. Coat spot-weld flange areas with zinc powder paint.

2.1. Coat all spot-weld flange areas with zinc powder

paint.

Installing front wheel housing

Danger of injury when welding

DANGER

Risk of fatal injury from high voltage during electric welding!

Diagnostic system: reading out fault memory and activating systems

Preparing reinforcement for front wheel housing for installation

1475

Danger of explosion and fire when welding in the area of highly inflammable materials.

• 

Irritation to respiratory tracts from toxic zinc oxide emitted when welding galvanised steel!

• 

Danger of injury from unintentional triggering of pyrotechnical safety components!

• 

Danger of injury from weld spatters and UV light when welding!

• 

→ Do not perform welding work in a damp environment or on wet ground; there is a risk of fatal

injury from the voltage being conducted through the human body. Persons with heart pacemakers
should not perform welding work. Use insulating underlays.

→ Remove highly flammable materials from the work area; if necessary, remove units with

fuel-carrying parts and protect work areas in the vehicle that are at risk of catching fire using
fire-proof covers.

→ Ventilate the work area well.

→ Remove smoke gases with a suitable extraction system (refer to Workshop Equipment Manual).

→ Wear suitable protective equipment, such as protective clothing, gloves, a welding shield and, if

necessary, a protective mask.

→ For welding work, always disconnect both terminals on the battery. In the case of welding work in

the immediate vicinity of the control modules for pyrotechnical safety systems, remove the control
modules before beginning work.

→ In addition, the guidelines of the welding equipment manufacturer and the legal accident

prevention regulations and those of the mutual indemnity association (BGV D1) must be observed.

Installing front wheel housing

1. Fit the front wheel housing to the body.

1.1. Place the front wheel housing against the body and secure to the straightening

set.

Drilling holes for plug welding using inert gas

2. Drill hole for plug welding using inert gas.

2.1. After fitting in the new part, drill hole in area -A- by a further plate

thickness.

Diagnostic system: reading out fault memory and activating systems

Danger of injury when welding

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