INSPECTION AND MAINTENANCE
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Hydrogen gas is generated as the battery charges and the battery is heated by the chemical change. To
prevent the danger of gas explosion, always do as follows.
• Before carrying out charging, check that the battery electrolyte level is within the correct range. If the
level is low, add distilled water immediately.
• Carry out the charging operation in a clean, dust-free, well-ventilated place.
• Start the charging operation when the temperature of the battery electrolyte is below 35 °C(95 °F).
(If the temperature goes above 50 °C (122 °F) during the charging operation, wait for it to go down below
35 °C (95 °F) before starting charging operation again.)
• When using a battery charger to charge the battery, take the battery caps off.
• Explanations on battery charging in this manual apply to a genuine Komatsu Forklift battery charger.
If you find any nonconformity in the explanations for your battery charger, contact your Komatsu Forklift
dealer for proper operating methods.
• If your battery charger is not a genuine Komatsu Forklift charger supplied by another source, follow the
specific operation manual for that battery charger.
• During charging, always open the battery bonnet and lock it.
• If the fuse for the battery charger is blown, always replace it with a genuine Komatsu Forklift fuse.
• Explosive gas is produced in the battery during charging. Keep flame away from battery.
• Clean the top of the battery and ensure it is kept dry. Confirm that the caps are closed. A dirty top will
badly affect battery life.
• If the battery charger is used for a long time with remarkably deviated tap voltage at the power supply, the
charger could burn out. Periodically check facility side voltage and adjust the tap voltage by selecting
appropriate taps of power supply.
• Cables, receptacles and safety devices (circuit breaker or fuses) should have a capacity corresponding
to maximum input current to battery charger. Insufficient capacity may cause fire. Maximum input current
varies depending on battery charger. If the current value is unknown, contact your Komatsu Forklift
dealer.
• When connecting and disconnecting the plug, always grip the plug body. Do not pull the cable to
disconnect the plug as this may break the wires.
• Loosened connections between an outlet and plug, broken contact terminals, damaged power supply
cable, etc., can cause a fire due to overheating.
• Thoroughly check for proper connection. If any fault is found, always repair it or consult your Komatsu
Forklift dealer.
• Connect the plug directly to the appropriate outlet because a large amount of current flows during
charging.
• Never use multiple connections to a single outlet nor use cables extended with couplings.
PRECAUTIONS WHEN CHARGING THE BATTERY
It is dangerous if the brakes do not work because, in this condition, the lift truck cannot be stopped. Always
do the following:
• Check the level of the brake fluid periodically.
• Always use the specified brake fluid.
• Check that the breather of the brake fluid reserve tank is not clogged.
• Be careful not to let dirt or dust get into the brake fluid reserve tank.
HANDLING BRAKE FLUID
