Komatsu ecot3 WA430-6 Operation & Maintenance Manual page 205

OPERATION
PRECAUTIONS WHEN DRIVING MACHINE
When the machine travels at high speed for a long distance, the tires become extremely hot. This causes early wear
of the tires and should be avoided as much as possible. If the machine must be driven for a long distance, take the
following precautions.
Follow the regulations related to this machine, and drive carefully.
Before driving the machine, carry out the checks before starting.
The most suitable tire pressure, travel speed, or tire type differ according to the condition of the travel surface.
Contact your Komatsu distributor or tire dealer for information.
The following is a guide to suitable tire pressures and speeds when traveling on a paved surface with standard
tires. (23.5-25-16PR(L3))
Tire pressure
Front wheel: 350 kPa (3.5 kg/cm
Rear wheel: 310 kPa (3.1 kg/cm
Speed:14 km/h (8.7 MPH)
Check the tire pressure before starting, when the tire is cool.
After traveling for one hour, stop the machine for 30 minutes and check the tires and all parts for any abnormality.
Check the oil level and coolant level also.
When stopping the machine in extremely cold areas, do as follows.
To prevent the radiator water temperature from rising suddenly, do not suddenly stop the engine. Gradually cool
the radiator water down before stopping the engine.
Always travel with the bucket empty.
Never put "calcium chloride" or "dry ballast" in the tires when traveling.
PRECAUTIONS REGARDING BRAKE FUNCTION
When traveling long distances continuously downhill, the frequency of using the brake may increase. As a result,
depending on the weight of the machine and the grade of the slope, the machine's braking capacity may be
exceeded and the brakes may overheat.
The table below shows a guideline of the values for this machine.
Machine Slope
weight grade
(t) (%)
10
18.1 to 20.1
(unloaded)
20
10
23.7 to 25.7
(loaded)
20
If the braking capacity limit is exceeded, a forced cooling system for the brakes is needed, so please consult your
Komatsu distributor.
3 - 148
2
, 49.8 PSI)
2
, 44.0 PSI)
Braking capacity limit
Average travel speed
limit (km/h (MPH))
40 (24.9)
17 (10.6)
37 (23.0)
12 (7.5)
Downhill distance limit
(continuous)(km)
2.6
0.9
2.1
0.7
OPERATION