Komatsu PC138USLC Operation & Maintenance Manual page 232

OPERATION
Using Road Liners
Prohibited Works
Do not carry out the following types of work.
Carrying out operations and steering on crushed rock, extremely rough hard rock, steel beams, scrap iron, or near
the edges of steel plates will cause damage to the rubber shoes and road liners.
In places such as river beds where there are large numbers of large and small boulders, the stones may get
caught and damage the rubber shoes and road liners or make the shoes come off. If dozing operations are carried
out when the shoes are slipping, this will reduce the life of the rubber shoes and road liner.
Be careful not to get oil, fuel, or chemical solvent on the rubber shoes and road liners. If such a substance shold
get on the shoes, remove it immediately. Furthermore, do not travel on road surfaces where oil has collected.
When putting the machine into long-term storage (3 months or more), store the machine indoors where it is
protected from direct sunlight or rain.
Do not use the machine in high-temperature areas, such as areas where there is burning wood, steel plates that
have been left under the hot sun, or places where asphalt has been laid.
When the rubber parts of the road liner are so worn or broken that the head of the mounting bolts are scratched,
replace the shoe immediately. If the bolt heads are broken, the bolt cannot be removed.
When installing road liners, always install them to all links on both sides. If they are installed to only one part of
the links, their durability will be greatly reduced.
Long Life Operations
Be careful of the following points when carrying out work.
Avoid carrying out counterrotation turns on concrete surfaces. There is danger that the concrete surface will
scrape off the rubber from the shoe.
Avoid making sudden changes in direction. This may cause premature wear or damage to the rubber shoes and
road liners.
Avoid operating the steering when traveling over places where there is a big difference in height. When traveling
over obstacles or places where there is a difference in height, drive the machine at right angles to the obstacle
to prevent the shoes from coming off.
If the machine has been raised using the bucket, lower it slowly.
Avoid doing work with materials that produce oil when crushed (soy beans, corn, or remains of vegetables
squeezed for oil); or wash the machine after use.
Avoid handling materials that will attack the adhesion of the steel core, such as salt, ammonium sulphate,
potassium chloride, potassium sulphate, or calcium superphosphate; or wash the machine after use.
The adhesion of the core will be attacked by salt, so avoid using the machine in coastal areas.
When handling salt, sugar, wheat, or soy beans, if there is any deep cut in the rubber shoes and road liners, these
substances may get into the lugs or cut portion of the rubber. Always repair the rubber before use.
Do not carry out work that involves scraping against walls or concrete embankments.
Road liners slip extremely easily on snow or frozen roads. Be careful not to slip when traveling or working on
slopes.
The properties of road liners change when working in extermely cold places, and this will reduce the life of the
rubber shoes and road liners.
Because of the properties of rubber, use the road liners within a range of -25°C to +65°C (-13°F to +149°F).
When carrying out bucket operations, be careful not to damage the road liners with the bucket.
MACHINE OPERATIONS AND CONTROLS
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