General information
When performing welding operations with electrical welding sets, adhere to the following instructions:

• Welding works at the chassis frame may only be performed by trained and sufficiently qualified staff.
• Remove and cover the positive and negative terminals of the batteries.
• Connect earth terminal of the welding set directly to the part to be welded. Caution! The earth terminal of the welding set must not be connected to any other module (engine, transmission, axles, etc.).
• Do neither touch the housings of electronic modules (e. g. control units) nor electrical lines with the welding electrode or with the earth terminal of the welding set.
• At cabs which are independently supported, connect the earth terminal of the welding set to the cab.
• Before beginning the welding work, it is required to protect the springs against weld splatters. Do not touch springs with the welding electrodes or the electrode holder.

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Caution!
It is not permitted to weld:

• At modules, such as engine, transmission, axles, etc.
• At the chassis frame (except for wheel base and frame modifications)

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Welding at the vehicle frame
At the upper and lower belt of the chassis frame, it is not permitted to weld (except for wheel-base modifications and frame extension).
Connect the earth terminal of the welding set directly to the vehicle part to be welded.

• Only use well drained electrodes with lime-basic coating. Electrode diameter 2.5 mm.
• Current intensity per mm of the electrode diameter is max. 40 A.
• The electrodes may only be welded together with direct current via the positive pole. In general, the welding has to be performed from bottom to top.
• Inert gas shielded arc welding is permitted.
• Weld filler rod size between 1 and 1.2 mm.
• The weld material must at least have the same yield point and tensile strength like the material to be welded.
• To avoid a notch effect caused by weld penetrations, slur weld joints and reinforce them using angular profiles. Avoid weld joints in bend radii. The distance between weld joints and outer edges should be at least 15 mm.
• Only plug weld in the neutral zone is permitted.