Porshe 911 (997). Manual - part 371

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

Fitting in retaining bracket and preparing for installation

Fitting retaining bracket to the body

1. Fitting retaining bracket to the body

1.1. Separate replacement part in area -A- to obtain a welding slit width s = 1 x sheet

thickness.

1.2. Fix the retaining bracket with tensioning

clamps.

Drilling holes for plug welding using inert gas

2. Drilling holes for plug welding using inert gas

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

bores as on the old part.

Diagnostic system: reading out fault memory and activating systems

Safety instructions for sharp-edged body and unit parts

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Cleaning the welding areas

3. Cleaning the welding

areas

3.1. Grind both sides of the connecting flanges of the retaining bracket in the marked areas -A- and -B- until

bare using a rotary brush.

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

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

paint.

Fitting in support tube and preparing for installation

Cleaning the welding areas

1. Cleaning the welding

areas

1.1. Grind both sides of the connecting flanges of the support tube in the marked areas -A, B, C, D, E, F, G-

until bare from the inside using a rotary brush.

Installing lower side member reinforcement

Diagnostic system: reading out fault memory and activating systems

Fitting in retaining bracket and preparing for installation

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Danger of injury when welding

DANGER

Risk of fatal injury from high voltage during electric welding!

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 lower side member reinforcement

Note

Determine the position of the new part and secure with tensioning clamps.
When butt welding body sheet panels with a sheet thickness of > 1.5 mm, there must be a welding slit
width s = 1 x sheet thickness to guarantee the required welding quality (welding through).

Diagnostic system: reading out fault memory and activating systems

Danger of injury when welding

1643

Fitting retaining bracket to the body

1. Fitting retaining bracket to the body

1.1. Fit the retaining bracket to the body and fix in place with tensioning clamps.

Fitting the support tube to the body

2. Fitting the support tube to the body

2.1. Fit the support tube to the body and fix in place with tensioning

clamps.

Welding in support tube

3. Welding in support tube

3.1. Apply a full weld to secure the support tube in area -A- to the retaining bracket using inert

gas.

Diagnostic system: reading out fault memory and activating systems

Installing lower side member reinforcement

1644