4.4 Welding on vehicle/frame
General
Observe the following when welding with electric equipment:
- Welding on the vehicle chassis frame may only be carried out by specialist personnel.
- Positive and negative terminals of the batteries must be disconnected and covered.
- The earth clamp of the welding unit must be connected directly to the part to be welded. Warning! Do not connect the earth clamp of the welding unit to the assemblies (engine, gearbox, axles, etc.).
- Do not come into contact with electronic component housings (e.g. control units) and electrical wiring with the welding electrode or the earth clamp of the welding unit.
- Connect earth clamp of welding unit to cab where cab is insulated.
Before commencing welding work, cover springs to protect from welding splashes, do not touch springs with weld electrodes or welding tongs
Warning!
Do not weld:
- On assemblies, such as engine, gearbox, axles, etc.
- On vehicle chassis frame (with exception of wheelbase and frame modifications).
Welding on vehicle frame
Do not weld on the upper and lower belt of the vehicle chassis frame (with exception of wheelbase modifications and frame extensions).
Connect the earth clamp of the welding unit directly to the vehicle part to be welded.
- Use only dry electrodes with lime-based shroud. Electrode diameter 2.5 mm.
- Current rating per mm of electrode diameter maximum 40 A.
- The electrodes may only be welded with direct current via the positive terminal. Welding work should be performed as a rule from the bottom up.
- Shielded-arc welding is permissible.
- Welding rod thickness 1 to 1.2 mm.
- The welding material must be suitable for the body panels of light commercial vehicles used in the vehicle industry.
- In order to avoid notches forming as a result of welding burns, grind down weld seams and reinforce with angled section. Avoid weld seams in curve radii. The distance from the weld seams to the outer edges should be at least 15 mm.
- Plug seam welding is only permissible in the neutral zone.
- When work is complete, corrosion protection must be restored.