16. TROUBLESHOOTING 16.4 PRECAUTIONS ON PARTICULAR JOBSITES 1. When carrying out digging operations in water, if the work equipment mounting pin goes into the water, carry out greasing every time the operation is carried out. 2. For heavy-duty operations and deep digging, carry out greasing of the work equipment mounting pins every time before operation. After greasing, operate the boom, arm and bucket several times, then grease again. 16.5 IF BATTERY IS DISCHARGED PC450-ENG 2-90 WARNING • When checking or handling the battery, stop the engine and turn the starting switch key to the OFF position before starting. • The battery generates hydrogen gas, so there is danger of explosion.
Do not bring lighted cigarettes near the battery, or do anything that will cause sparks. • Battery electrolyte is dilute sulphuric acid, and it will attack your clothes and skin. If it gets on your clothes or on your skin, wash it off immediately with large amounts of water. If it gets in your eyes, wash it out with fresh water, and consult a doctor. • When handling battery, always wear protective goggles. • When removing the battery, first disconnect the cable from the ground (normally, from the negative - terminal). When in- stalling, install the positive + terminal first.
If a tool touches the cable connecting the positive terminal and the chassis, there is danger that it will cause sparks. • If the terminals are loose, there is danger that the defective contact may generate sparks that will cause an explosion. When installing the terminals, install them tightly. • When removing or installing, check which is the positive - terminal and negative - terminal. WARNING