After Completion Of Work; After Cold Weather - Komatsu D31EX -22 Operation & Maintenance Manual

OPERATION
BATTERY
The battery generates flammable gas. Do not bring fire or sparks near the battery.
Battery electrolyte is dangerous. If it gets in your eyes or on your skin, wash it off with a large amount of water and consult a
doctor.
Battery electrolyte dissolves paint. If it gets on the bodywork, wash it off immediately with water.
If the battery electrolyte is frozen, do not charge the battery or start the engine with a different power source. There is danger
that the battery may explode.
Battery electrolyte is toxic. Do not let it flow into drainage ditches or spray it on to the ground surface.
When the ambient temperature drops, the capacity of the battery will also drop. If the battery charge ratio is low, the
battery electrolyte may freeze. Maintain the battery charge as close as possible to 100%. Insulate it against cold
temperature to ensure the machine can be started easily the next morning.
REMARK
Measure the specific gravity and calculate the charging rate from the following conversion table.
Electrolyte
Temperature
Charging
Rate (%)
100
90
80
75
As the battery capacity drastically drops in low temperatures, cover or remove the battery from the machine, store
the battery in a warm place, and install it again the next morning.
If the electrolyte level is low, add distilled water in the morning before beginning work. Do not add water after the
day's work to prevent diluted electrolyte in the battery from freezing during the night.

AFTER COMPLETION OF WORK

To prevent mud, water, or the undercarriage from freezing and making it impossible for the machine to move on the
following morning, observe the following precautions.
Remove all the mud and water from the machine body. In particular, wipe the hydraulic cylinder rods clean to
prevent damage to the seal caused by mud, dirt, or drops of water on the rod from getting inside the seal.
Park the machine on hard, dry ground.
If this is impossible, park the machine on boards.
The boards prevent the tracks from freezing to the ground, and allow the machine to be moved the next morning.
Open the drain valve and drain the water in the fuel system to prevent it from freezing.
Fill the fuel tank to capacity. This minimizes moisture condensation in the tank when the temperature drops.

AFTER COLD WEATHER

When the season changes and the weather becomes warmer, do as follows.
Replace the fuel and oil for all parts with oil of the viscosity specified.
For details, see "RECOMMENDED FUEL, COOLANT, AND LUBRICANT (PAGE 4-13)".
WARNING
20 ° C 0 ° C -10 ° C
(68 ° F) (32 ° F) (14 ° F)
1.28 1.29
1.26 1.27
1.24 1.25
1.23 1.24
-20 ° C
(-4 ° F)
1.30 1.31
1.28 1.29
1.26 1.27
1.25 1.26
COLD WEATHER OPERATION
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