Wiring Eyelets, Servicing

Wiring Eyelets, Servicing

Special tools, testers and auxiliary items required

• Contact Surfaces Cleaning Set (VAS 6410)

• Using the Contact surface cleaning set VAS 6410 (VAS 6410) , service work can be performed in the area of the contact sensor on the threaded connection wiring harnesses in the high current circuit (starter and charging current).

• 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".

• 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.


Risk of injury.

• Follow all Warnings and Safety Precautions. Refer to => [ Lead-Acid Battery Warnings and Safety Precautions ] Lead-Acid Battery Warnings and Safety Precautions.

- Disconnect the battery.

- Loosen the cap nut and remove the wiring eyelet from the threaded connection.






- Check the wiring eyelet for corrosion, contamination, etc.

- Select the corresponding adapter and the corresponding sanding pad.

• A sanding block can be used instead.


Increased corrosion due to an exposed copper layer.

• Make sure the tin layer is not worn down too much and the copper is not visible. Increased corrosion can result due to the galvanizing effects.

• 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.

- Insert the adapter in the wiring eyelet and sand off the corrosion and contamination with circular motion.






- Check the wiring eyelet and sand it again if necessary.

- If necessary, remove the burr on the wiring eyelet with the deburrer.

- Reinstall the wiring eyelet to the tightening specification.

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

- Protect the connection with the corresponding protection material. Refer to=> [ Protecting ] Protecting.

- Reconnect the battery.