Komatsu PC450-8 Operation & Maintenance Manual page 252

COLD WEATHER OPERATION
AFTER DAILY WORK COMPLETION
Performing idle-running of the tracks is dangerous, stay well away from the tracks.
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.
q
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.
q
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 morn-
ing.
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Open the drain valve and drain any water collected in the fuel system to prevent it from freezing.
q
Fill the fuel tank to capacity. This minimizes moisture condensation in the tank when the temperature drops.
q
After operation in water or mud, remove water from undercarriage as described below to extend undercarriage
service life.
1. Swing 90° with engine at low idle and bring the work equip-
ment to the side of the track.
2. Jack up the machine until the track is raised slightly from
the ground. Rotate the track under no load. Repeat this
procedure on both the left and right sides.
AFTER COLD WEATHER SEASON
When the season changes and the weather becomes warmer, do as follows.
q
Replace the fuel and oil for all parts with oil of the viscosity specified.
For details, see "RECOMMENDED FUEL, COOLANT, AND LUBRICANT (4-12)".
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WARNING
OPERATION
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