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MAINTENANCE
CHECK OF ACCUMULATOR GAS PRESSURE
For handling of the accumulator, see "HANDLING SUSPENSION CYLINDER, ACCUMULATOR (PAGE 2-32)".
REMARK
If the engine stops during travel, the brake can be operated with the oil pressure in the accumulator temporarily.
CHECK OF FUNCTION
1. Stop the machine on a flat place and set the parking brake switch to the PARKING position.
2. Start the engine and run it at medium speed for 1 minute, and then stop it.
3. Turn the starting switch to the ON position and depress the brake pedal several times. After the brake pedal is
depressed some times, the brake oil pressure caution lamp lights up.
If the brake oil pressure caution lamp lights up when the brake pedal is depressed 4 times or less, the gas
pressure in the accumulator may be low. Ask your Komatsu distributor for inspection.
If the brake oil pressure caution lamp does not light up when the brake pedal is depressed 5 times, the gas
pressure in the accumulator is normal.
REMARK
Check the function within 5 minutes after stopping the engine. If the engine is kept stopped, the gas pressure in the
accumulator lowers and cannot be checked.
SERVICE PROCEDURE
4 - 55
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