12. OPERATION 12.11 PRECAUTIONS FOR OPERATION When traveling on roads in rain or snow, or when traveling on muddy or soft ground, consider the loaded condition of the dump truck and be extremely careful not to let the tires slip or spin and sink into the ground. If the engine should stop when the machine is traveling, stop the machine immediately, then move the speed lever to the N position, and start the engine again. If the central warning lamp and pilot lamp for any EMERGENCY item on the machine monitor should flash and the buzzer sounds during operation, stop the machine immediately and invest the cause. For details, see “16. TROUBLESHOOTING”.
When loading, be careful to load the dump body uniformly, and be particularly careful to avoid loading too much at the front. On slippery road surfaces, apply the retarder control lever slowly and shift the transmission down to prevent the rear wheels from locking. When traveling through pools of water, water may get inside the front brakes and cause a big drop in the braking force, so drive carefully in such areas. If water should get into the brakes, apply the brakes several times while traveling to produce friction heat between the pad and disc to remove the water.
NOTICE If letter “E-” and any of action code “01” to “07” are displayed in turn at the upper right of the liquid crystal display on the monitor panel, stop the machine once. Take corrective action as follows after checking the action code. Action code 02 Park the machine on safe place and contact Komatsu’s service department. 04 Carry out safety stop. Stop the engine and contact Komatsu’s service department. 01 Carry out checks and maintenance according to the Operation and Maintenance Manual. 03 Operate the machine keeping the engine at low revolution and low travel speed. 05 Stop the machine. Run the engine at a mid-range speed under no load. 06 Restart the engine.
Idle the engine for a while. 07 Do not raise the body. 2-90