Threaded Connections, Servicing

Special tools, testers and auxiliary items required

Fig 1: Torque Wrench V.A.G 1331

Courtesy of VOLKSWAGEN UNITED STATES, INC.

VAG 1331

NOTE:

Do not use rust remover, contact spray or grease because the lack of friction will cause the torque to be exceeded when installing and this will lead to the threaded connection breaking.
The gray sanding pads are for slight contamination and suitable for "soft surfaces". The red sanding pads are for heavy contamination and suitable for "hard surfaces".

CAUTION: Danger of injury! Observe warning notes and safety precautions → Warnings and Safety Precautions under Warnings and Safety Precautions !

Disconnect battery → 27 - STARTER, GENERATOR, CRUISE CONTROL .

Fig 2: Disconnecting Battery

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Loosen the cap nut and remove the wiring eyelet from the threaded connection.
Check the threaded connection for corrosion, contamination, etc.
Select the corresponding adapter and the corresponding sanding pad for the threaded connection.

CAUTION: Ensure the tin layer is not worn down too much and the copper is not visible. A galvanic element can form from this, destroying the metal and causing incorrect repairs.

NOTE:

Due to the different thicknesses of the tin layer, the cleaning process must be performed in several steps and a visual inspection of the wiring eyelet between steps is necessary.

Fig 3: Sanding Off Threaded Connection

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Place the adapter on the threaded connection and sand off the corrosion and contaminants with circular movements.
Check the threaded connection and resand it if necessary.
Retighten the connection and, if necessary, the anti-rotation protection to the specified torque, → Electrical Wiring Diagrams, Troubleshooting and Component Locations.

NOTE:

Optimal contact is ensured if the bolted components are tightened to the specified torque after cleaning.

Protect the threaded connection with the corresponding protection material.
Reconnect the battery.

CAUTION: Danger of injury! Observe warning notes and safety precautions → Warnings and Safety Precautions under Warnings and Safety Precautions !

Reprogram the window regulators, enter the radio code, set the clock and, if necessary, recode control modules that have error messages.