An employee was operating a loader with a grapple attachment to unload tree logs from a truck when he noticed the temperature indicator light flashing. The employee turned off the loader and waited a few minutes to let the engine cool off. Next, the employee started to remove one of the radiator caps on the loader. As he started removing the cap, hot water and steam released from that area, striking the employee. He sustained third degree burns to his left wrist, left arm, and left side torso.