Komatsu HM400-5, Руководство по эксплуатации и техническому обслуживанию, Страница: 278 / 446

HANDLE TIRE
PRECAUTIONS WHEN HANDLING TIRES
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WARNING
To ensure safety, the defective tires given below must be replaced with new tires.
• Tires where the bead wire has been cut, broken, or greatly deformed
• Excessively worn tires where more than 1/4 of the circumference of the carcass ply (excluding the
breaker) is exposed
• Tires where damage to the carcass exceeds 1/3 of the tire width
• Tires where ply separation has occurred
• Tires where radial cracks extend to the carcass
• Deteriorated, deformed or abnormally damaged tires, which do not seem usable.
(1) Side wall
(2) Shoulder
(3) Tread
(4) Breaker or belt (cord layer)
(5) Bead
(6) Inner liner
(7) Cord
Contact your Komatsu distributor when replacing the tires. It is
dangerous to jack up the machine without taking due care.
PRECAUTIONS FOR LONG DISTANCE TRAVEL
If the machine travels continuously at high speed for a long distance, there will be a remarkable increase in the
generation of heat in the tire. This may cause premature damage to the tire, so observe the following.
• Travel only unloaded.
• Check the tire inflation pressure before starting for the day when the tires are cold, and adjust to the follow-
ing inflation pressure.
• Do not reduce the tire inflation pressure when traveling.
Tire size
Inflation pressure kPa {kg/cm
2
}
Front wheel Center wheel Rear wheel
29.5-R25 (standard) 375 {3.8} 390 {4.0} 390 {4.0}
875/65R29 (option) 440 {4.5} 440 {4.5} 440 {4.5}
NOTICE
If the tires are used when the inflation pressure is less than the value given in the table above, the rim
may be damaged.
Always keep the tire inflation pressure within 0 to +30 kPa {0 to +0.3 kg/cm
2
} of the value in the table
above.
• The maximum travel speed must be kept to less than 40 km/h km/h. Stop for at least 1 hour for every 1
hour of travel to allow the tires and other components to cool down.
• Never drive the machine with “water” or “dry ballast” in the tires.
MACHINE OPERATIONS AND CONTROLS OPERATION
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