Nissan Armada 2025-2026 Service and Repair Manual: Precautions during Welding

• Wear long sleeved work uniform, work cap, and safety shoes. Wear safety goggles, gloves, earplugs, and dustproof respirator if necessary.

• MIG arc welding for aluminum plates emits sparks. Do not stare directly at them. Before working, be sure to wear protectors to avoid getting burned.

• Always perform pre-treatment of the parent metal.

  Dirt and oxidization film on the parent metal will cause defective welding. The following pre-treatment should be performed prior to welding. Oil film should be cleaned using Silicon Off or white gasoline.

  Surface should then be polished using a thin wire stainless steel brush.

  Oxide film is reproduced in approximately 30 minutes to 1 hour.

  Therefore, it is best to perform the pre-treatment immediately before welding.

  Even if pre-treatment for various locations has already been performed, it is necessary to use a wire brush again immediately before welding.

• Use filler metal (welding rod or welding wire) that is suitable for the parent metal.

• Filler metal used for aluminum welding flows easier than for steel welding, and therefore the welding surface should be in the horizontal position.

• For TIG and MIG welding, even a 0.5 m/s (1.6 ft/s) breeze will greatly effect the seal. When performing welding outside, select a place where dust and moisture are minimized. A shelter should be constructed for protection from wind or rain.

• Remove paint film of the welding portions and electrodeposition coating of the service parts using a disc sander.

  When removing, be careful not to excessively sand aluminum alloy base material.

  

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