Which components of the truck should be kept away from water?

When transporting certain specialized cargo, whether for cooling, dust suppression, maintaining humidity, or other purposes, the truck driver may need to spray water on the cargo or the truck itself. However, it is crucial to avoid contact with specific parts and systems.

Firstly, the cab contains numerous electronic devices and components; exposure to water can lead to damage. Therefore, it is essential to ensure that doors are closed when spraying water.

Secondly, electrical systems—including sensors, wiring harnesses, connectors, ignition systems, batteries and their accessories—are highly sensitive to moisture. Care must be taken as this could result in short circuits or corrosion.

Thirdly, within the engine compartment: both the engine and its associated components (such as air intakes and exhaust systems) should be shielded from water contact in order to prevent potential engine failure or damage.

Fourthly, regarding the brake system: elements such as brake discs, drums, pads and fluid reservoirs must remain dry since moisture can impair braking efficiency—especially after repeated use where rapid cooling might excessively wear these components.

Lastly, for trucks equipped with Selective Catalytic Reduction (SCR) systems: care should be taken to keep urea tanks and injection mechanisms free from water exposure in order to prevent dilution of urea solutions and protect Nox sensor probes from thermal shock.