• Depending on the vehicle, the cooling fan may operate suddenly even when the engine switch is turned off. Therefore, keep hands and tools away from the cooling fan even if the cooling fan is not operating to prevent injury to personnel or damage to the cooling fan. Always disconnect the negative battery cable when servicing the cooling fan or parts near the cooling fan.
• Remove and install all parts when the engine is cold, otherwise they can cause severe burns or serious injury.
• Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise 2.5 turns. Step back while the pressure escapes.
• When you are sure all the pressure is gone, turn the cap using the cloth, and remove it.